Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0748 PM CDT Thu Apr 27 2017 Valid 280100Z - 281200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE SOUTHEAST... ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE LOWER GREAT LAKES/CENTRAL APPALACHIANS... ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE WESTERN KANSAS/NORTHERN OKLAHOMA VICINITY... ...SUMMARY... A storm or two capable of locally gusty/damaging winds and perhaps marginal hail or a tornado may linger over parts of the Georgia/Carolinas vicinity. Otherwise, isolated gusty winds may accompany a stronger storm or two over portions of the lower Great Lakes area this evening. Finally, low-end severe risk -- most likely in the form of hail -- may occur with a stronger cell or two over the western Kansas/northwest Oklahoma area this evening. ...Parts of the Southeast... A band of vigorous storms continues from parts of western SC southwest to southeast AL, with the strongest cells -- including a couple of locally severe storms -- over GA. A zone of ample /1000-2000 J/kg/ mixed-layer CAPE persists near and ahead of the front, and with veering/increasing flow with height, shear is likewise supportive of a few stronger/locally severe cells. Threat should gradually diminish as the boundary layer cools/stabilizes this evening. ...Western parts of New York and Pennsylvania and into adjacent northern West Virginia/western Maryland... Gradually diminishing instability is indicated across the upper Ohio Valley/lower Great Lakes region, where bands of storms continue moving quickly northeast. With moderately strong low- to mid-level flow across the area, risk for a locally damaging gust or two remains, though a gradual/diurnal decrease in convective intensity will occur over the next few hours. ...Western Kansas/northwest Oklahoma area... A gradually weakening band of storms continues shifting into western Kansas, coincident with a well-defined low- to mid-level center of circulation. Meanwhile, an increasing low-level jet could support development of a few additional storms across the region. Main risk would be marginally severe hail, but should remain local/isolated. ..Goss.. 04/28/2017Read more
from SPC Forecast Products http://ift.tt/rxAC6Z
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