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000 ACUS01 KWNS 170101 SWODY1 SPC AC 170100 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0800 PM CDT Sun Jun 16 2019 Valid 170100Z - 171200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF CENTRAL TEXAS... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF CENTRAL AND SOUTHEAST TEXAS...AND FROM THE OHIO VALLEY EASTWARD TO MARYLAND... ...SUMMARY... Severe thunderstorms are most likely across a large part of central Texas through evening, wind damaging wind and hail the main threats. Other severe storms are expected from the Ohio Valley to the Mid-Atlantic State through early evening. ...Central Texas... Widespread storms over northeast and east TX have cooled much of that area, with an outflow boundary extending from central into southeast TX as of 01Z. A moist and very unstable air mass remains south of these boundaries and is currently fueling severe storms from Irion to Kimble to Bell counties. Shear profiles remain weak especially aloft, but large instability with steep lapse rates aloft will support large hail initially, with isolated significant hail reports possible. In time, numerous storms may congeal into an MCS which will travel southeastward with a damaging wind threat. For more information see mesoscale discussion 1099. ...Ohio Valley to the Delmarva... Numerous storms currently exist along the Ohio River, mainly oriented east-west along an outflow boundary and parallel to the upper flow. The exception is a leading line segment which is moving from eastern KY into WV, which is oriented more favorably for damaging wind potential. The air mass downstream remains sufficiently unstable to sustain these storms, although a gradual weakening trend is expected into the evening. Farther east, the IAD 00Z sounding shows a semi-favorable wind profile for severe cellular storms capable of mainly hail, with effective SRH around 150 m2/s2. A small time window exists in this area for a few severe storms, but the threat will also decrease through the evening here. If storms over WV can sustain into this area, a few strong wind gusts will be possible. ..Jewell.. 06/17/2019 $$