SPC Severe Thunderstorm Watch 447

By Newsroom America Feeds at 12 Aug 14:45

WW 447 SEVERE TSTM NJ NY PA 121845Z - 130100Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 447 NWS Storm Prediction Center Norman OK 245 PM EDT Sat Aug 12 2017 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western New Jersey Central and Eastern New York Central and Eastern Pennsylvania * Effective this Saturday afternoon and evening from 245 PM until 900 PM EDT. * Primary threats include... Scattered large hail events to 1.5 inches in diameter possible Isolated damaging wind gusts to 70 mph possible SUMMARY...Storms will continue to increase and intensify this afternoon, perhaps especially across south-central/southeast Pennsylvania as well as east-central New York. Severe hail and wind will be possible with the strongest storms as they spread eastward through the afternoon and early evening. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 50 miles northeast of Utica NY to 35 miles south of Harrisburg PA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). 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. && AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27025. ...Guyer Read more

http://www.spc.noaa.gov/products/watch/ww0447.html

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