376 
ACUS01 KWNS 111936
SWODY1
SPC AC 111934

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0134 PM CST Thu Dec 11 2025

Valid 112000Z - 121200Z

...NO THUNDERSTORM AREAS FORECAST...

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

...20Z Update...
No changes needed.

..Mosier.. 12/11/2025

.PREV DISCUSSION... /ISSUED 1012 AM CST Thu Dec 11 2025/

...Discussion...
A broad midlevel trough will move off the Eastern Seaboard today,
while surface high pressure shifts eastward across the Southeast.
Farther west, a weak surface low and accompanying cold front will
advance eastward from the central Plains to the Mid MS Valley.
Dry/stable conditions ahead of/behind the front will limit
thunderstorm potential across the CONUS.

$$


File: /home/ldm/var/data/BY_SOURCE/KWNS/ACUS01/20251211T1936.txt



289 
ACUS01 KWNS 111614
SWODY1
SPC AC 111612

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1012 AM CST Thu Dec 11 2025

Valid 111630Z - 121200Z

...NO THUNDERSTORM AREAS FORECAST...

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

...Discussion...
A broad midlevel trough will move off the Eastern Seaboard today,
while surface high pressure shifts eastward across the Southeast.
Farther west, a weak surface low and accompanying cold front will
advance eastward from the central Plains to the Mid MS Valley.
Dry/stable conditions ahead of/behind the front will limit
thunderstorm potential across the CONUS.

..Weinman.. 12/11/2025

$$


File: /home/ldm/var/data/BY_SOURCE/KWNS/ACUS01/20251211T1614.txt



151 
ACUS01 KWNS 111249
SWODY1
SPC AC 111248

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0648 AM CST Thu Dec 11 2025

Valid 111300Z - 121200Z

...NO THUNDERSTORM AREAS FORECAST...

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

...Synopsis and Discussion...
Surface high pressure and offshore flow will be maintained today
across much of TX and the Southeast as an upper trough/low advances
east-northeastward across New England into Canada. With cool and/or
stable conditions expected across a large majority of the CONUS,
thunderstorms are not expected through tonight.

..Gleason/Lyons.. 12/11/2025

$$


File: /home/ldm/var/data/BY_SOURCE/KWNS/ACUS01/20251211T1249.txt



482 
ACUS01 KWNS 110555
SWODY1
SPC AC 110553

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1153 PM CST Wed Dec 10 2025

Valid 111200Z - 121200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not forecast across the U.S. on Thursday.

...DISCUSSION...
A mid-level trough will move eastward from the eastern U.S. into the
western Atlantic today, as northwest flow remains over most of the
nation. At the surface, a large area of high pressure will be
located from parts of the Great Plains to the southern and central
Appalachians. The relatively cool and dry airmass will be
unfavorable for thunderstorm development across the U.S. through
tonight.

..Broyles/Thornton.. 12/11/2025

$$


File: /home/ldm/var/data/BY_SOURCE/KWNS/ACUS01/20251211T0555.txt



310 
ACUS01 KWNS 110056
SWODY1
SPC AC 110054

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0654 PM CST Wed Dec 10 2025

Valid 110100Z - 111200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not forecast across the U.S. through tonight.

...DISCUSSION...
A mid-level trough, and an associated cold front will move eastward
across the eastern U.S. tonight as northwest flow remains over much
of the western and central U.S. Surface high pressure will remain
over the central U.S. The airmass across the continental U.S. will
remain relatively cool and dry, making conditions unfavorable for
thunderstorms through daybreak on Thursday.

..Broyles.. 12/11/2025

$$


File: /home/ldm/var/data/BY_SOURCE/KWNS/ACUS01/20251211T0056.txt