SPC Severe Thunderstorm Watch 219

By Newsroom America Feeds at 16 May 2017

WW 219 SEVERE TSTM IA MN NE SD 160450Z - 161000Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 219 NWS Storm Prediction Center Norman OK 1150 PM CDT Mon May 15 2017 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northwest Iowa Southwest Minnesota Far northeast Nebraska Southeast South Dakota * Effective this Monday night and Tuesday morning from 1150 PM until 500 AM CDT. * Primary threats include... Isolated very large hail events to 2 inches in diameter possible Isolated damaging wind gusts to 70 mph possible SUMMARY...Strong to locally severe thunderstorms will continue to develop northeastward across the region through the overnight hours. Steep lapse rates and moderate elevated instability will support the possibility of severe hail and perhaps locally damaging winds. These storms have a history of producing severe-caliber wind gusts across central/east-central Nebraska. The severe thunderstorm watch area is approximately along and 45 statute miles north and south of a line from 25 miles west of Yankton SD to 25 miles north northeast of Spencer IA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 214...WW 215...WW 216...WW 218... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 24030. ...Guyer Read more



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