Probability of a tornado within 25 miles of a point. Hatched Area: 10% or greater probability of EF2 - EF5 tornadoes within 25 miles of a point.
Day 1 Tornado Risk
Area (sq. mi.)
Area Pop.
Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Damaging Wind Graphic
Probability of damaging thunderstorm winds or wind gusts of 50 knots or higher within 25 miles of a point. Hatched Area: 10% of greater probability of wind gusts 65 knots or greater within 25 miles of a point.
Day 1 Wind Risk
Area (sq. mi.)
Area Pop.
Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Large Hail Graphic
Probability of hail 1" or larger within 25 miles of a point. Hatched Area: 10% or greater probability of hail 2" or larger within 25 miles of a point.
Day 1 Hail Risk
Area (sq. mi.)
Area Pop.
Some Larger Population Centers in Risk Area
No Risk Areas Forecast
SPC AC 191228
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0628 AM CST Sun Dec 19 2021
Valid 191300Z - 201200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not expected through tonight.
...North FL and southeast GA...
Showers and isolated thunderstorms are ongoing from southeast GA
into the northeast Gulf within the warm conveyor regime downstream
of a cold front that lags across the Chattahoochee Valley. As this
lead activity diurnally weakens and shifts east of the Atlantic
Coast, a corridor of weak surface-based destabilization should occur
ahead of the cold front. Isolated thunderstorms should form along
the front this afternoon. Weak mid to upper-level lapse rates and
modest deep-layer shear should limit updraft intensity. A couple
storms might produce a strong wind gust, but potential for severe
appears negligible.
..Grams/Mosier.. 12/19/2021
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1630Z
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