SPC MD 1730

By Newsroom America Feeds at 21 Oct 2017

MD 1730 CONCERNING SEVERE THUNDERSTORM WATCH 505... FOR NORTH-CENTRAL TX
Mesoscale Discussion 1730 NWS Storm Prediction Center Norman OK 1009 PM CDT Sat Oct 21 2017 Areas affected...North-central TX Concerning...Severe Thunderstorm Watch 505... Valid 220309Z - 220445Z The severe weather threat for Severe Thunderstorm Watch 505 continues. SUMMARY...Line of strong to severe storms with primary hazards of wind and hail should accelerate east across parts of north TX. DISCUSSION...Trailing portion of an extensive QLCS extends to the TX Big Country. Parts of this line have begun to surge/accelerate east over the Low Rolling Plains and the primary hazard should be strong to severe wind gusts as the line persists just south of the Red River. The far southwest portion of the line should pose a risk for isolated severe hail owing to a more semi-discrete mode. While the 00Z FWD sounding sampled mean mixing ratios of only around 11 g/kg, a plume of richer boundary-layer moisture characterized by near 70 F surface dew points is being advected north towards the Metroplex and north-central TX. This might foster a maintenance of QLCS intensity during the early morning, compensating for gradual nocturnal cooling. ..Grams.. 10/22/2017 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...FWD...OUN...SJT... LAT...LON 33779763 33779666 33719600 32979605 32539693 32199880 32279956 32819945 33809802 33779763 Read more

http://www.spc.noaa.gov/products/md/md1730.html

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