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 310052
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0752 PM CDT Sat Oct 30 2021
Valid 310100Z - 311200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorms will be possible this evening in parts of New England
and in the western U.S. through tonight, but no severe weather is
expected.
...DISCUSSION...
An upper-level low will move slowly north-northeastward across the
central Appalachians this evening. To the east of the system,
onshore flow will be in place across the northern section of the
Atlantic Seaboard. Strong large-scale ascent and weak instability
across parts of New England may be enough for an isolated
thunderstorm this evening. Scattered thunderstorms will also be
possible ahead of an approaching upper-level low this evening into
tonight across parts of Oregon, northern California. Further east,
an isolated thunderstorm will also be possible in a parts of the
Intermountain West tonight. No severe weather is expected across the
continental United States this evening or tonight.
..Broyles.. 10/31/2021
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z
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