SPC Dec 10, 2025 0100 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 0100Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0649 PM CST Tue Dec 09 2025

Valid 100100Z - 101200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not forecast through tonight.

...Discussion...
A fast moving surface low, associated with a strong mid-level jet
streak, will continue to move east-southeastward toward the western
Great Lakes this evening. Forecast soundings show some very weak
elevated instability within the warm sector, but it does not appear
instability will be deep enough for sufficient charge separation for
any thunderstorm activity. Elsewhere in the CONUS, thunderstorm
activity will be minimal without significant instability in place.
Some lightning has occurred south of the Florida Keys, in the
vicinity of the stalled surface front. However, the lightning
activity has remained well offshore and is expected to remain so.

..Bentley.. 12/10/2025


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SPC Dec 9, 2025 1300 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1300Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0636 AM CST Tue Dec 09 2025

Valid 091300Z - 101200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not forecast through tonight.

...Synopsis and Discussion...
A cold front has settled southward while decelerating over the FL
Straits this morning. Appreciable low-level moisture to support
thunderstorms is expected to remain along/south of this boundary,
with little potential for convection over land through tonight.

..Gleason/Lyons.. 12/09/2025


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SPC Dec 9, 2025 0600 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1200Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1102 PM CST Mon Dec 08 2025

Valid 091200Z - 101200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorm potential appears negligible today through tonight.

...Discussion...
Conditions will be too dry/stable for lightning-producing convection
across the CONUS through the period. Isolated thunderstorms are
possible today across the FL Straits near a quasi-stationary front
that progressed offshore of the FL Peninsula/Keys on Monday.

..Grams/Jirak.. 12/09/2025


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SPC Dec 9, 2025 0100 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 0100Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0647 PM CST Mon Dec 08 2025

Valid 090100Z - 091200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorm potential appears negligible tonight.

...Discussion...
With the surface cold front having recently pushed off the FL
Peninsula/Keys, dry/stable conditions will mitigate
lightning-producing convection across the CONUS tonight. Isolated
thunderstorms are possible offshore across the FL Straits as the
boundary slows/stalls.

..Grams.. 12/09/2025


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