SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1029 AM CST Sat Jan 16 2021 Valid 161630Z - 171200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Very isolated lightning flashes may occur along the New England coast this afternoon. ...New England... Bands of semi-organized low-topped convection ongoing near Cape Cod at midday will transition north-northeastward toward coastal Maine through the afternoon. While the highest probability of thunderstorms will remain well offshore, marginally supportive thermodynamic profiles near the coast could support a few lightning flashes this afternoon. ...Central Appalachians/Mid-Atlantic States... Although cloud cover will tend to remain prevalent, modest boundary- layer heating beneath the upper trough-related mid-level cold core (-30C to -35C at 500 mb) will yield steepening lapse rates. A few lightning flashes cannot be entirely ruled out this afternoon, but the potential/coverage is expected to remain very low overall (less than 10 percent). ..Guyer/Leitman.. 01/16/2021
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