SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0144 AM CST Thu Jan 14 2021 Valid 161200Z - 171200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Saturday. ...Ohio Valley and central Appalachians... The synoptic upper low centered over the OH Valley Saturday morning will move generally northeast, reaching the Northeast U.S. Saturday night. A dry continental polar airmass will reside across the OH Valley. Weak instability resulting from surface heating, cold air aloft and mid-level forcing for ascent attending vorticity maxima rotating through the upper low circulation will contribute to a few mostly snow showers. However, it appears the convective layer depth and degree of instability will remain insufficient for thunderstorms. ..Dial.. 01/14/2021
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