URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 491 NWS Storm Prediction Center Norman OK 630 PM CDT Sun Oct 1 2017 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Parts of south central into northeast Nebraska * Effective this Sunday night and Monday morning from 630 PM until 100 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...Severe storms will continue to develop and spread northeastward along a slow-moving front from central into northeast Nebraska, while other storms farther to the south and southwest could move east of the ongoing Tornado Watch 490 across central Nebraska. Large hail will be the main threat the next few hours, though some increase in the damaging-wind threat could occur late this evening as storms congeal into a larger cluster. The severe thunderstorm watch area is approximately along and 30 statute miles east and west of a line from 20 miles east of Oneill NE to 45 miles south southeast of Hastings NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). 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 490... 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 500. Mean storm motion vector 24030. ...ThompsonRead more
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