SPC Nov 11, 2025 1630 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1630Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1001 AM CST Tue Nov 11 2025

Valid 111630Z - 121200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not forecast across the contiguous United States
through tonight.

...Synopsis...
A large-scale mid-level trough over the East will be maintained as a
series of additional upstream disturbances over western Ontario and
the Upper Midwest act to reinforce troughing over the eastern U.S.
An arctic surface high centered over the northeast Gulf Coast will
result in seasonably cool/stable conditions east of the Rockies.
Farther west, a mid-level ridge will lead to tranquil conditions
across the Rockies to the Pacific coast.

..Smith/Wendt.. 11/11/2025


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SPC Nov 11, 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
0646 AM CST Tue Nov 11 2025

Valid 111300Z - 121200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not expected across the U.S. today or tonight.

...Synopsis...
Cyclone currently centered over northern NY/far eastern ON is
forecast to continue northeastward today, moving off the ME coast by
this evening. Northwesterly flow aloft will cover much of the
central and eastern CONUS in the wake of this cyclone, with a
low-amplitude shortwave trough moving within this northwesterly flow
from the northern Plains through the OH Valley. At the same time,
ridging will build over the western CONUS.

A dry and stable continental airmass will prevail across the CONUS
today, with notable airmass modification beginning across the
southern and central Plains. Strong surface high pressure currently
over the Southeast will result in offshore trajectories throughout
the first half of the period. As this high shifts
eastward/southeastward, southerly flow and moisture return will
begin across the TX Coast. Even with this moisture return, stable
conditions are expected to prevail, with no thunderstorms expected
across the CONUS today or tonight.

..Mosier/Squitieri.. 11/11/2025


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SPC Nov 11, 2025 0600 UTC Day 1 Convective Outlook

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


Day 1 Convective Outlook RESENT 1
NWS Storm Prediction Center Norman OK
1137 PM CST Mon Nov 10 2025

Valid 111200Z - 121200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
A severe threat is not expected across the U.S. today or tonight.

...DISCUSSION...
Mid-level northwesterly flow will be in place today from the
Intermountain West to the Eastern Seaboard. At the surface, a cool
and dry airmass over much of the nation will make conditions
unfavorable for thunderstorm development. No severe threat is
expected today and tonight.

..Broyles/Weinman.. 11/11/2025


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SPC Nov 10, 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
1139 PM CST Sun Nov 09 2025

Valid 101200Z - 111200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected today or tonight across the
U.S.

...DISCUSSION...
A large-scale mid-level trough will move across the eastern U.S.
today to near the eastern Seaboard tonight. At the surface, cold
high pressure will settle into the southern Plains. This dry airmass
will dominate much of the nation. Isolated thunderstorms could occur
in south Florida near a front early in the day, and along the New
England coast near an inverted surface trough. Isolated lightning
strikes may also occur with snow over and near Lake Michigan. No
severe threat is expected across the continental U.S. today and
tonight.

..Broyles/Weinman.. 11/10/2025


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