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 2 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 2 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 2 Hail Risk
Area (sq. mi.)
Area Pop.
Some Larger Population Centers in Risk Area
No Risk Areas Forecast
SPC AC 240659
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1259 AM CST Fri Dec 24 2021
Valid 251200Z - 261200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Isolated thunderstorms will be possible along the Pacific Coast and
in portions of the Ohio Valley on Saturday.
...Synopsis...
An upper-level trough will amplify along the West Coast on Saturday
with broad ridging across much of the eastern CONUS. A weak
mid-level shortwave trough will de-amplify as it moves across the
Ohio Valley/southern Great Lakes during the day.
At the surface, a weak area of low pressure will move along the
front as it slowly sags south in the Ohio Valley. Farther west, a
surface low will deepen as it moves into the Columbia Basin. A cold
front will extend southward from this surface low through central
Oregon and northern California into the eastern Pacific.
...California Coast...
Convection is expected along the surface front as it moves south
along the California Coast through the day. Buoyancy will be mostly
limited with temperatures in the mid to upper 40s and dewpoints in
the low 40s, but cold air advection aloft with relatively warm ocean
waters should generate sufficient instability for thunderstorms. The
low-level jet is forecast to strengthen to around 40 knots ahead of
the front by Saturday afternoon. Therefore, if any stronger
convection develops, such as the bowing segments depicted by the 00Z
HRRR, it may pose a threat for isolated damaging wind gusts given
the strengthening low-level wind field.
..Bentley.. 12/24/2021
CLICK TO GET WUUS02 PTSDY2 PRODUCT
NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z
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