URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 320 NWS Storm Prediction Center Norman OK 635 PM CDT Tue Jun 30 2020 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and Eastern Nebraska Southeast South Dakota * Effective this Tuesday night and Wednesday morning from 635 PM until 100 AM CDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible Scattered large hail and isolated very large hail events to 2 inches in diameter possible A tornado or two possible SUMMARY...Severe thunderstorms are expected to develop near an eastward-advancing cold front this evening, initially across southeast South Dakota south-southwestward into east-central/south-central Nebraska. Isolated large hail can be expected, with severe-caliber wind gusts becoming more common into mid/late evening as storms linearly organize. The severe thunderstorm watch area is approximately along and 65 statute miles east and west of a line from 35 miles east northeast of Huron SD to 45 miles south southwest of Hastings NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). 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 319... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 24025. ...GuyerRead more
from SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0320.html
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