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 310548
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1248 AM CDT Sun Oct 31 2021
Valid 311200Z - 011200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
No severe thunderstorms are expected across the continental United
States today and tonight.
...DISCUSSION...
An upper-level low will move across the Northeast today as an
upper-level trough moves across the north-central states. In the
West, an upper-level trough will move inland across the Desert
Southwest. Large-scale ascent will increase ahead of the system as
mid-level lapse rates become steep. Thunderstorm development will be
possible this afternoon along the northern edge of this area of
steep lapse rates from southern Idaho east-southeastward into
northwest Colorado. However, no severe threat is expected. Elsewhere
across the continental United States thunderstorm development is not
expected today or tonight.
..Broyles/Bentley.. 10/31/2021
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1300Z
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