Category: Weather

Report of Solar Geophysical Activity (RSGA)

22 Jul 18:02 | Weather

Joint USAF/NOAA Solar Geophysical Activity Report and Forecastread more »

Severe Thunderstorms With Heavy Rain from Great Lakes to Mid-Atlantic; Excessive Heat For Central/Southern U.S. to Mid-Atlantic

22 Jul 12:11 | Weather

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Tropical Storm Greg Graphics

22 Jul 11:02 | Weather

5-Day Uncertainty Track last updated Sat, 22 Jul 2017 15:02:13 GMT Wind Speed Probabilities last updated Sat, 22 Jul 2017 15:23:58 GMT read more »

Tropical Depression Ten-E Graphics

22 Jul 11:00 | Weather

5-Day Uncertainty Track last updated Sat, 22 Jul 2017 15:00:08 GMT Wind Speed Probabilities last updated Sat, 22 Jul 2017 15:41:26 GMT read more »

Tropical Depression NINE-E Graphics

22 Jul 10:59 | Weather

5-Day Uncertainty Track last updated Sat, 22 Jul 2017 14:59:19 GMT Wind Speed Probabilities last updated Sat, 22 Jul 2017 15:32:52 GMT read more »

Tropical Storm Greg Forecast Discussion Number 21

22 Jul 10:56 | Weather

Issued at 800 AM PDT Sat Jul 22 2017 000 WTPZ42 KNHC 221456 TCDEP2 Tropical Storm Greg Discussion Number 21 NWS National Hurricane Center Miami FL EP072017 800 AM PDT Sat Jul 22 2017 A large and strong burst of convection has formed on the northern side of the center of Greg during the past several hours. However, microwave data suggest the center remains mostly exposed on the southern side of the thunderstorm activity. Satellite intensity estimates range between 35-55 kt, so the initial wind speed will be kept at 45 kt. While shear is forecast to decrease near Greg over the next 36 hours as a trough lifts out, SSTs are also likely to decrease along with more dry air in the environment of the cyclone. The net result of these competing factors is that little significant intensity change is expected over the next couple of days. After that, most of the models increase the shear again while the storm moves over colder waters. Thus Greg should weaken at long range, aread more »

Summary for Tropical Storm Greg (EP2/EP072017)

22 Jul 10:55 | Weather

...GREG MOVING WESTWARD WITH LITTLE CHANGE IN STRENGTH... As of 8:00 AM PDT Sat Jul 22 the center of Greg was located near 15.1, -124.2 with movement W at 13 mph. The minimum central pressure was 1001 mb with maximum sustained winds of about 50 mph. read more »

Tropical Storm Greg Wind Speed Probabilities Number 21

22 Jul 10:55 | Weather

Issued at 1500 UTC SAT JUL 22 2017 000 FOPZ12 KNHC 221455 PWSEP2 TROPICAL STORM GREG WIND SPEED PROBABILITIES NUMBER 21 NWS NATIONAL HURRICANE CENTER MIAMI FL EP072017 1500 UTC SAT JUL 22 2017 AT 1500Z THE CENTER OF TROPICAL STORM GREG WAS LOCATED NEAR LATITUDE 15.1 NORTH...LONGITUDE 124.2 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 45 KTS...50 MPH...85 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME read more »

Tropical Storm Greg Public Advisory Number 21

22 Jul 10:55 | Weather

Issued at 800 AM PDT Sat Jul 22 2017 000 WTPZ32 KNHC 221455 TCPEP2 BULLETIN Tropical Storm Greg Advisory Number 21 NWS National Hurricane Center Miami FL EP072017 800 AM PDT Sat Jul 22 2017 ...GREG MOVING WESTWARD WITH LITTLE CHANGE IN STRENGTH... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...15.1N 124.2W ABOUT 1075 MI...1735 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 800 AM PDT (1500 UTC), the center of Tropical Storm Greg was located near latitude 15.1 North, longitude 124.2 West. Greg is moving toward the west near 13 mph (20 km/h), and this general motion is expected to continue over the next 48 read more »

Tropical Depression Ten-E Forecast Discussion Number 1

22 Jul 10:55 | Weather

Issued at 900 AM MDT Sat Jul 22 2017 000 WTPZ45 KNHC 221455 TCDEP5 Tropical Depression Ten-E Discussion Number 1 NWS National Hurricane Center Miami FL EP102014 900 AM MDT Sat Jul 22 2017 I thought there was no more room for another cyclone in the eastern Pacific basin, but nature managed to produce another one. The disturbance that NHC has been monitoring for several days has finally developed enough circulation and convection to be classified as a tropical depression, the sixth cyclone that has formed in the month of July. The center is located on the northern edge of a circular mass of deep convection and, based of an average of Dvorak numbers, it is being assigned an initial intensity of 30 kt. The depression is in between TS Greg and TD 9-E, and the environment is not ideal for strengthening. However, most of the global models show a decrease of the shear in the next few days, and this will allow some intensification. The depression is trapped south of a subtrread more »

Tropical Storm Greg Forecast Advisory Number 21

22 Jul 10:55 | Weather

Issued at 1500 UTC SAT JUL 22 2017 000 WTPZ22 KNHC 221455 TCMEP2 TROPICAL STORM GREG FORECAST/ADVISORY NUMBER 21 NWS NATIONAL HURRICANE CENTER MIAMI FL EP072017 1500 UTC SAT JUL 22 2017 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 15.1N 124.2W AT 22/1500Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 11 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1001 MB MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT. 34 KT....... 50NE 30SE 30SW 50NW. 12 FT SEAS.. 90NE 45SE 45SW 90NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 15.1N 124.2W AT 22/1500Z AT 22/1200Z CENTER WAS LOCATED NEAR 15.1N 123.6W FORECAST VALID 23/0000Z 15.1N 126.0W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 50NE 30SE 30SW 50NW. FORECAST VALID 23/1200Z 15.0N 128.2W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 50Nread more »

Summary for Tropical Depression Ten-E (EP5/EP102017)

22 Jul 10:54 | Weather

...ANOTHER TROPICAL DEPRESSION FORMS IN THE EASTERN PACIFIC... ...THE SIXTH JULY TROPICAL CYCLONE... As of 9:00 AM MDT Sat Jul 22 the center of Ten-E was located near 14.7, -112.8 with movement W at 7 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 35 mph. read more »

Tropical Depression Ten-E Public Advisory Number 1

22 Jul 10:54 | Weather

Issued at 900 AM MDT Sat Jul 22 2017 000 WTPZ35 KNHC 221454 TCPEP5 BULLETIN Tropical Depression Ten-E Advisory Number 1 NWS National Hurricane Center Miami FL EP102017 900 AM MDT Sat Jul 22 2017 ...ANOTHER TROPICAL DEPRESSION FORMS IN THE EASTERN PACIFIC... ...THE SIXTH JULY TROPICAL CYCLONE... SUMMARY OF 900 AM MDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...14.7N 112.8W ABOUT 595 MI...960 KM SSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 900 AM MDT (1500 UTC), the center of newly formed Tropical Depression Ten-E was located near latitude 14.7 North, longitude 112.8 West. The depression is moving toward the west near 7 mph (1read more »

Tropical Depression Ten-E Wind Speed Probabilities Number 1

22 Jul 10:54 | Weather

Issued at 1500 UTC SAT JUL 22 2017 000 FOPZ15 KNHC 221454 PWSEP5 TROPICAL DEPRESSION TEN-E WIND SPEED PROBABILITIES NUMBER 1 NWS NATIONAL HURRICANE CENTER MIAMI FL EP102017 1500 UTC SAT JUL 22 2017 AT 1500Z THE CENTER OF TROPICAL DEPRESSION TEN-E WAS LOCATED NEAR LATITUDE 14.7 NORTH...LONGITUDE 112.8 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 30 KTS...35 MPH...55 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME read more »

Tropical Depression NINE-E Forecast Discussion Number 5

22 Jul 10:54 | Weather

Issued at 1000 AM CDT Sat Jul 22 2017 000 WTPZ44 KNHC 221454 TCDEP4 Tropical Depression Nine-E Discussion Number 5 NWS National Hurricane Center Miami FL EP092017 1000 AM CDT Sat Jul 22 2017 The depression has failed to strengthen as previously indicated, and both the circulation and the convection are not currently as organized as it seemed to be 24 hours ago when advisories were initiated. Microwave data reveal that the center appears to be located on the south side of the main convection, and the low and mid-level centers are not aligned. Based on Dvorak numbers, the maximum winds are estimated at 30 kt. Having said that, the depression is expected to move through a very favorable moist environment of low shear during the next several days, and the ocean is plenty warm. With these conditions present, the NHC forecast insists on strengthening and still anticipates that the depression will become a hurricane in about 48 hours. Guidance is a little bit less aggressivread more »

Tropical Depression Ten-E Forecast Advisory Number 1

22 Jul 10:54 | Weather

Issued at 1500 UTC SAT JUL 22 2017 000 WTPZ25 KNHC 221454 TCMEP5 TROPICAL DEPRESSION TEN-E FORECAST/ADVISORY NUMBER 1 NWS NATIONAL HURRICANE CENTER MIAMI FL EP102017 1500 UTC SAT JUL 22 2017 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 14.7N 112.8W AT 22/1500Z POSITION ACCURATE WITHIN 50 NM PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 6 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 14.7N 112.8W AT 22/1500Z AT 22/1200Z CENTER WAS LOCATED NEAR 14.7N 112.5W FORECAST VALID 23/0000Z 14.8N 113.8W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 30NE 30SE 30SW 30NW. FORECAST VALID 23/1200Z 15.0N 115.0W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 30NE 30SE 30SW 30NW. FORECAST VALID 24/0000Z 15.0N 116.0W MAXread more »

Tropical Depression NINE-E Wind Speed Probabilities Number 5

22 Jul 10:53 | Weather

Issued at 1500 UTC SAT JUL 22 2017 000 FOPZ14 KNHC 221453 PWSEP4 TROPICAL DEPRESSION NINE-E WIND SPEED PROBABILITIES NUMBER 5 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092017 1500 UTC SAT JUL 22 2017 AT 1500Z THE CENTER OF TROPICAL DEPRESSION NINE-E WAS LOCATED NEAR LATITUDE 10.0 NORTH...LONGITUDE 98.2 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 30 KTS...35 MPH...55 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME read more »

Tropical Depression NINE-E Forecast Advisory Number 5

22 Jul 10:53 | Weather

Issued at 1500 UTC SAT JUL 22 2017 000 WTPZ24 KNHC 221453 TCMEP4 TROPICAL DEPRESSION NINE-E FORECAST/ADVISORY NUMBER 5 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092017 1500 UTC SAT JUL 22 2017 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 10.0N 98.2W AT 22/1500Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 10.0N 98.2W AT 22/1500Z AT 22/1200Z CENTER WAS LOCATED NEAR 9.8N 97.5W FORECAST VALID 23/0000Z 10.5N 99.4W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 30NE 0SE 0SW 30NW. FORECAST VALID 23/1200Z 11.6N 101.3W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 50NE 30SE 30SW 50NW. FORECAST VALID 24/0000Z 12.5Nread more »

Tropical Depression NINE-E Public Advisory Number 5

22 Jul 10:53 | Weather

Issued at 1000 AM CDT Sat Jul 22 2017 000 WTPZ34 KNHC 221453 TCPEP4 BULLETIN Tropical Depression Nine-E Advisory Number 5 NWS National Hurricane Center Miami FL EP092017 1000 AM CDT Sat Jul 22 2017 ...DEPRESSION FAILED TO STRENGTHEN BUT CONDITIONS REMAIN FAVORABLE FOR IT... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...10.0N 98.2W ABOUT 410 MI...660 KM SSW OF PUERTO ANGEL MEXICO ABOUT 490 MI...790 KM SSE OF ACAPULCO MEXICO MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 1000 AM CDT (1500 UTC), the center of Tropical Depression Nine-E was located near latitude 10.0 North, longitude 98.2 West. The depression is moving toward the west-northwest nearead more »

Summary for Tropical Depression NINE-E (EP4/EP092017)

22 Jul 10:53 | Weather

...DEPRESSION FAILED TO STRENGTHEN BUT CONDITIONS REMAIN FAVORABLE FOR IT... As of 10:00 AM CDT Sat Jul 22 the center of NINE-E was located near 10.0, -98.2 with movement WNW at 12 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 35 mph. read more »

Eastern North Pacific Tropical Weather Outlook

22 Jul 07:31 | Weather

000 ABPZ20 KNHC 221130 TWOEP Tropical Weather Outlook NWS National Hurricane Center Miami FL 500 AM PDT Sat Jul 22 2017 For the eastern North Pacific...east of 140 degrees west longitude: The National Hurricane Center is issuing advisories on Tropical Storm Greg, located several hundred miles southwest of the southern tip of the Baja California peninsula, and on Tropical Depression Nine-E, located several hundred miles south of eastern Mexico. A low pressure system is centered about 600 miles south-southwest of the southern tip of the Baja California peninsula. Showers and thunderstorms have increased overnight and, if this trend continues, advisories will be initiated on a tropical depression later this morning. Environmental conditions are forecast to be conducive for development during the next couple of days while the system moves generally westward at around 10 mread more »

SPC - No watches are valid as of Sat Jul 22 10:22:01 UTC 2017

22 Jul 06:21 | Weather

No watches are valid as of Sat Jul 22 10:22:01 UTC 2017.read more »

Tropical Storm Greg Graphics

21 Jul 11:04 | Weather

5-Day Uncertainty Track last updated Fri, 21 Jul 2017 15:04:58 GMT Wind Speed Probabilities last updated Fri, 21 Jul 2017 15:23:36 GMT read more »

Tropical Storm Greg Forecast Discussion Number 17

21 Jul 11:00 | Weather

Issued at 800 AM PDT Fri Jul 21 2017 000 WTPZ42 KNHC 211500 TCDEP2 Tropical Storm Greg Discussion Number 17 NWS National Hurricane Center Miami FL EP072017 800 AM PDT Fri Jul 21 2017 Satellite images indicate that the central convection associated with Greg has become more compact over the last several hours, though it is mostly on the northern side of the circulation. Microwave data also show an increase in organization with a thin mid-level eye feature now apparent. Although the conventional satellite estimates haven't changed, based on the increased structure in microwave data, the initial wind speed is bumped up to 50 kt, a blend of the latest CI estimates from TAFB/SAB. The initial motion is a more confident 285/9. A trough to the northwest of Greg is forecast to lift northward during the next couple of days, which will probably cause Greg to shift to a more westward track by Sunday as a ridge builds in slightly. The short-term forecast has been shifted northwaread more »

Tropical Storm Greg Public Advisory Number 17

21 Jul 10:59 | Weather

Issued at 800 AM PDT Fri Jul 21 2017 000 WTPZ32 KNHC 211459 TCPEP2 BULLETIN Tropical Storm Greg Advisory Number 17 NWS National Hurricane Center Miami FL EP072017 800 AM PDT Fri Jul 21 2017 ...GREG MOVING WEST-NORTHWESTWARD WITH 60-MPH WINDS... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...15.1N 119.2W ABOUT 810 MI...1305 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 800 AM PDT (1500 UTC), the center of Tropical Storm Greg was located near latitude 15.1 North, longitude 119.2 West. Greg is moving toward the west-northwest near 10 mph (17 km/h). A continued westward to west-northwestward motion with a read more »

Summary for Tropical Storm Greg (EP2/EP072017)

21 Jul 10:59 | Weather

...GREG MOVING WEST-NORTHWESTWARD WITH 60-MPH WINDS... As of 8:00 AM PDT Fri Jul 21 the center of Greg was located near 15.1, -119.2 with movement WNW at 10 mph. The minimum central pressure was 1001 mb with maximum sustained winds of about 60 mph. read more »

Tropical Storm Greg Wind Speed Probabilities Number 17

21 Jul 10:59 | Weather

Issued at 1500 UTC FRI JUL 21 2017 000 FOPZ12 KNHC 211459 PWSEP2 TROPICAL STORM GREG WIND SPEED PROBABILITIES NUMBER 17 NWS NATIONAL HURRICANE CENTER MIAMI FL EP072017 1500 UTC FRI JUL 21 2017 AT 1500Z THE CENTER OF TROPICAL STORM GREG WAS LOCATED NEAR LATITUDE 15.1 NORTH...LONGITUDE 119.2 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 50 KTS...60 MPH...95 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME read more »

Tropical Depression NINE-E Graphics

21 Jul 10:59 | Weather

5-Day Uncertainty Track last updated Fri, 21 Jul 2017 14:59:07 GMT Wind Speed Probabilities last updated Fri, 21 Jul 2017 15:32:20 GMT read more »

Tropical Storm Greg Forecast Advisory Number 17

21 Jul 10:58 | Weather

Issued at 1500 UTC FRI JUL 21 2017 000 WTPZ22 KNHC 211458 TCMEP2 TROPICAL STORM GREG FORECAST/ADVISORY NUMBER 17 NWS NATIONAL HURRICANE CENTER MIAMI FL EP072017 1500 UTC FRI JUL 21 2017 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 15.1N 119.2W AT 21/1500Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 9 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1001 MB MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT. 50 KT....... 20NE 0SE 0SW 0NW. 34 KT....... 60NE 20SE 20SW 60NW. 12 FT SEAS.. 90NE 45SE 45SW 90NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 15.1N 119.2W AT 21/1500Z AT 21/1200Z CENTER WAS LOCATED NEAR 14.9N 118.7W FORECAST VALID 22/0000Z 15.4N 120.7W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 20NE 0SE 0SW 20NW. 34 KT... 60NE 20SE 20SW 60NW. Fread more »

Tropical Depression NINE-E Wind Speed Probabilities Number 1

21 Jul 10:55 | Weather

Issued at 1500 UTC FRI JUL 21 2017 000 FOPZ14 KNHC 211455 PWSEP4 TROPICAL DEPRESSION NINE-E WIND SPEED PROBABILITIES NUMBER 1 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092017 1500 UTC FRI JUL 21 2017 AT 1500Z THE CENTER OF TROPICAL DEPRESSION NINE-E WAS LOCATED NEAR LATITUDE 9.0 NORTH...LONGITUDE 93.5 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 30 KTS...35 MPH...55 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME read more »

Tropical Depression NINE-E Forecast Discussion Number 1

21 Jul 10:55 | Weather

Issued at 1000 AM CDT Fri Jul 21 2017 000 WTPZ44 KNHC 211455 TCDEP4 Tropical Depression Nine-E Discussion Number 1 NWS National Hurricane Center Miami FL EP092017 1000 AM CDT Fri Jul 21 2017 Early visible satellite images and recent microwave data indicate that the disturbance that NHC has been tracking for the past few days over the far eastern Pacific has gained enough convective organization and circulation to be designated a tropical depression. The low-level center is difficult to precisely locate, but is estimated to be under the area of deep convection and east of a developing cyclonically curved band. Dvorak estimates are 2.0 and 1.5 from TAFB and SAB, respectively. The initial intensity has been set at 30 kt, but environmental conditions are very favorable for the depression to become a tropical storm later today or Saturday and then a hurricane. Most of the intensity models agree with this scenario and so does the official forecast which follows the consenread more »

Tropical Depression NINE-E Forecast Advisory Number 1

21 Jul 10:54 | Weather

Issued at 1500 UTC FRI JUL 21 2017 000 WTPZ24 KNHC 211454 TCMEP4 TROPICAL DEPRESSION NINE-E FORECAST/ADVISORY NUMBER 1 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092017 1500 UTC FRI JUL 21 2017 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 9.0N 93.5W AT 21/1500Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT 12 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1008 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 9.0N 93.5W AT 21/1500Z AT 21/1200Z CENTER WAS LOCATED NEAR 9.0N 93.2W FORECAST VALID 22/0000Z 9.4N 95.6W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 30NE 0SE 0SW 0NW. FORECAST VALID 22/1200Z 10.0N 98.0W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 40NE 0SE 0SW 30NW. FORECAST VALID 23/0000Z 10.9N 100.0W MAread more »

Summary for Tropical Depression NINE-E (EP4/EP092017)

21 Jul 10:54 | Weather

...AND YET ANOTHER DEPRESSION FORMS IN THE EASTERN PACIFIC... As of 10:00 AM CDT Fri Jul 21 the center of NINE-E was located near 9.0, -93.5 with movement W at 14 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 35 mph. read more »

Tropical Depression NINE-E Public Advisory Number 1

21 Jul 10:54 | Weather

Issued at 1000 AM CDT Fri Jul 21 2017 000 WTPZ34 KNHC 211454 TCPEP4 BULLETIN Tropical Depression Nine-E Advisory Number 1 NWS National Hurricane Center Miami FL EP092017 1000 AM CDT Fri Jul 21 2017 ...AND YET ANOTHER DEPRESSION FORMS IN THE EASTERN PACIFIC... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...9.0N 93.5W ABOUT 505 MI...815 KM SSE OF PUERTO ANGEL MEXICO ABOUT 695 MI...1120 KM SE OF ACAPULCO MEXICO MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 1000 AM CDT (1500 UTC), the center of the recently formed Tropical Depression Nine-E was located near latitude 9.0 North, longitude 93.5 West. The depression is moving toward the west near 14 mph read more »

Eastern North Pacific Tropical Weather Outlook

21 Jul 07:31 | Weather

000 ABPZ20 KNHC 211131 TWOEP Tropical Weather Outlook NWS National Hurricane Center Miami FL 500 AM PDT Fri Jul 21 2017 For the eastern North Pacific...east of 140 degrees west longitude: The National Hurricane Center is issuing advisories on Tropical Storm Greg, located several hundred miles southwest of the southern tip of the Baja California peninsula. A broad area of low pressure centered several hundred miles south of the southern tip of the Baja California peninsula is producing disorganized showers and thunderstorms. Environmental conditions are forecast to be conducive for the formation of a tropical depression during the next couple of days before upper-level winds become unfavorable for development. This system is forecast to move westward to west-northwestward at around 10 mph through early next week. * Formation chance through 48 hours...high...70 percread more »

Report of Solar Geophysical Activity (RSGA)

20 Jul 18:01 | SciTech

Joint USAF/NOAA Solar Geophysical Activity Report and Forecastread more »

Tropical Storm GREG Graphics

20 Jul 10:51 | Weather

5-Day Uncertainty Track last updated Thu, 20 Jul 2017 14:51:03 GMT Wind Speed Probabilities last updated Thu, 20 Jul 2017 15:28:22 GMT read more »

Tropical Depression Eight-E Graphics

20 Jul 10:48 | Weather

5-Day Uncertainty Track last updated Thu, 20 Jul 2017 14:48:52 GMT Wind Speed Probabilities last updated Thu, 20 Jul 2017 15:34:36 GMT read more »

Tropical Storm GREG Forecast Discussion Number 13

20 Jul 10:47 | Weather

Issued at 800 AM PDT Thu Jul 20 2017 000 WTPZ42 KNHC 201447 TCDEP2 Tropical Storm Greg Discussion Number 13 NWS National Hurricane Center Miami FL EP072017 800 AM PDT Thu Jul 20 2017 Greg has become notably better organized during the past several hours with a growing curved band stretching around the eastern and southern semicircles of the storm. This organization trend is also seen on a 1139Z SSMIS microwave pass, which shows a better-defined central core. Satellite intensity estimates are between 45-55 kt, and the initial wind speed is set to 45 kt, on the low side since the satellite signature has been above the ASCAT data for the past day or so. The northwesterly shear from yesterday has diminished, leading to a symmetric outflow pattern near the storm. While the SSTs are expected to be warm enough for strengthening for the next few days, the possible interaction of Greg and a mid/upper-level trough near 130W is a complicating factor in the forecast, along witread more »

Tropical Storm GREG Wind Speed Probabilities Number 13

20 Jul 10:45 | Weather

Issued at 1500 UTC THU JUL 20 2017 000 FOPZ12 KNHC 201445 PWSEP2 TROPICAL STORM GREG WIND SPEED PROBABILITIES NUMBER 13 NWS NATIONAL HURRICANE CENTER MIAMI FL EP072017 1500 UTC THU JUL 20 2017 AT 1500Z THE CENTER OF TROPICAL STORM GREG WAS LOCATED NEAR LATITUDE 14.1 NORTH...LONGITUDE 115.4 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 45 KTS...50 MPH...85 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME read more »

Tropical Storm GREG Forecast Advisory Number 13

20 Jul 10:45 | Weather

Issued at 1500 UTC THU JUL 20 2017 000 WTPZ22 KNHC 201445 TCMEP2 TROPICAL STORM GREG FORECAST/ADVISORY NUMBER 13 NWS NATIONAL HURRICANE CENTER MIAMI FL EP072017 1500 UTC THU JUL 20 2017 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 14.1N 115.4W AT 20/1500Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE WEST OR 275 DEGREES AT 9 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT. 34 KT....... 50NE 0SE 0SW 50NW. 12 FT SEAS.. 60NE 30SE 30SW 60NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 14.1N 115.4W AT 20/1500Z AT 20/1200Z CENTER WAS LOCATED NEAR 14.1N 115.1W FORECAST VALID 21/0000Z 14.3N 116.7W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 20NE 0SE 0SW 0NW. 34 KT... 50NE 30SE 30SW 50NW. FORECAST VALID 21/1200Z 14.7N 118.7W MAX WIND 5read more »

Tropical Storm GREG Public Advisory Number 13

20 Jul 10:45 | Weather

Issued at 800 AM PDT Thu Jul 20 2017 000 WTPZ32 KNHC 201445 TCPEP2 BULLETIN Tropical Storm Greg Advisory Number 13 NWS National Hurricane Center Miami FL EP072017 800 AM PDT Thu Jul 20 2017 ...GREG FINALLY BECOMING BETTER ORGANIZED... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...14.1N 115.4W ABOUT 705 MI...1135 KM SSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 800 AM PDT (1500 UTC), the center of Tropical Storm Greg was located near latitude 14.1 North, longitude 115.4 West. Greg is moving toward the west near 10 mph (17 km/h) and this general motion is expected for the next few days. Maximum sustained wiread more »

Summary for Tropical Storm GREG (EP2/EP072017)

20 Jul 10:45 | Weather

...GREG FINALLY BECOMING BETTER ORGANIZED... As of 8:00 AM PDT Thu Jul 20 the center of GREG was located near 14.1, -115.4 with movement W at 10 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 50 mph. read more »

Tropical Depression Eight-E Forecast Discussion Number 9

20 Jul 10:44 | Weather

Issued at 800 AM PDT Thu Jul 20 2017 000 WTPZ43 KNHC 201444 TCDEP3 Tropical Depression Eight-E Discussion Number 9 NWS National Hurricane Center Miami FL EP082017 800 AM PDT Thu Jul 20 2017 The center of the depression remains difficult to find, but it appears to be near a small area of disorganized convection. As with the previous advisory, the satellite intensity estimates remain largely unchanged and the initial intensity is held at 25 kt. There is again no change to the intensity forecast thinking. A combination of shear from an upper-level low to the north and interaction with Tropical Storm Greg to the east should cause the depression to weaken and eventually dissipate. The intensity forecast has the system degenerating into a remnant low after 24 h and dissipating after 48 hr as it become absorbed into Greg. However, the system could decay to a remnant low at any time before then. The initial motion remains 245/5 kt. The depression is still expected to be read more »

Tropical Depression Eight-E Wind Speed Probabilities Number 9

20 Jul 10:44 | Weather

Issued at 1500 UTC THU JUL 20 2017 000 FOPZ13 KNHC 201444 PWSEP3 TROPICAL DEPRESSION EIGHT-E WIND SPEED PROBABILITIES NUMBER 9 NWS NATIONAL HURRICANE CENTER MIAMI FL EP082017 1500 UTC THU JUL 20 2017 AT 1500Z THE CENTER OF TROPICAL DEPRESSION EIGHT-E WAS LOCATED NEAR LATITUDE 13.4 NORTH...LONGITUDE 123.1 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 25 KTS...30 MPH...45 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME read more »

Summary for Tropical Depression Eight-E (EP3/EP082017)

20 Jul 10:44 | Weather

...DEPRESSION EXPECTED TO BECOME A REMNANT LOW DURING THE NEXT DAY OR TWO... As of 8:00 AM PDT Thu Jul 20 the center of Eight-E was located near 13.4, -123.1 with movement WSW at 6 mph. The minimum central pressure was 1009 mb with maximum sustained winds of about 30 mph. read more »

Tropical Depression Eight-E Public Advisory Number 9

20 Jul 10:44 | Weather

Issued at 800 AM PDT Thu Jul 20 2017 000 WTPZ33 KNHC 201444 TCPEP3 BULLETIN Tropical Depression Eight-E Advisory Number 9 NWS National Hurricane Center Miami FL EP082017 800 AM PDT Thu Jul 20 2017 ...DEPRESSION EXPECTED TO BECOME A REMNANT LOW DURING THE NEXT DAY OR TWO... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...13.4N 123.1W ABOUT 1085 MI...1745 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H PRESENT MOVEMENT...WSW OR 245 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...1009 MB...29.80 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 800 AM PDT (1500 UTC), the center of Tropical Depression Eight-E was located near latitude 13.4 North, longitude 123.1 West. The depression is moving toward the west-southwest near 6 mph (9 km/h), and a slow moread more »

Tropical Depression Eight-E Forecast Advisory Number 9

20 Jul 10:43 | Weather

Issued at 1500 UTC THU JUL 20 2017 000 WTPZ23 KNHC 201443 TCMEP3 TROPICAL DEPRESSION EIGHT-E FORECAST/ADVISORY NUMBER 9 NWS NATIONAL HURRICANE CENTER MIAMI FL EP082017 1500 UTC THU JUL 20 2017 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 13.4N 123.1W AT 20/1500Z POSITION ACCURATE WITHIN 45 NM PRESENT MOVEMENT TOWARD THE WEST-SOUTHWEST OR 245 DEGREES AT 5 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1009 MB MAX SUSTAINED WINDS 25 KT WITH GUSTS TO 35 KT. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 13.4N 123.1W AT 20/1500Z AT 20/1200Z CENTER WAS LOCATED NEAR 13.6N 122.9W FORECAST VALID 21/0000Z 12.9N 123.8W MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 21/1200Z 12.1N 124.5W MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 22/0000Z 11.6N 125.1W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. Fread more »

Tropical Storm Fernanda Graphics

20 Jul 10:43 | Weather

5-Day Uncertainty Track last updated Thu, 20 Jul 2017 14:43:03 GMT Wind Speed Probabilities last updated Thu, 20 Jul 2017 15:21:44 GMT read more »

Tropical Storm Fernanda Forecast Discussion Number 35

20 Jul 10:40 | Weather

Issued at 800 AM PDT Thu Jul 20 2017 000 WTPZ41 KNHC 201440 TCDEP1 Tropical Storm Fernanda Discussion Number 35 NWS National Hurricane Center Miami FL EP062017 800 AM PDT Thu Jul 20 2017 Since the last advisory, Fernanda has become significantly sheared with the low-level center now exposed to the southwest of a rather small area of deep convection. The initial intensity is reduced to 55 kt based on various satellite intensity estimates, and it is possible that this is generous. While the sea surface temperatures along the forecast track should increase, a combination of continued moderate-to-strong shear and entrainment of dry air should keep Fernanda steadily weakening through the forecast period. The cyclone is forecast to weaken to a depression in 24-36 h and degenerate into a remnant low shortly thereafter, with the new intensity forecast being an update of the previous forecast. The now-exposed center is a little west of the previous advisory position, and theread more »

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