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 280541
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1141 PM CST Sat Nov 27 2021
Valid 281200Z - 291200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorm chances will remain negligible on Sunday.
...Discussion...
Troughing/broad cyclonic flow aloft will shift across the eastern
half of the U.S. today, while a gradually flattening ridge prevails
over the western half of the country.
At the surface, a cold front will shift eastward/southeastward
across eastern portions of the country, reaching the western
Atlantic and Gulf of Mexico overnight. Meanwhile, a weak
clipper-type feature will shift out of southern portions of the
Canadian Prairie and then across the north-central states during the
second half of the period.
Cool/stable air is progged to persist at low levels across the
country. A lightning flash or two could occur near the Great Lakes
as cold air aloft associated with the passing upper trough spreads
atop the relatively warm lake water supporting development of
low-topped convection, coverage of any lightning should remain
minimal. Elsewhere, thunderstorms are not expected given the stable
conditions expected.
..Goss/Elliott.. 11/28/2021
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1300Z
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