LIVE MAP (ABOVE) ... SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0146 PM CST Sat Nov 22 2025
Valid 222000Z - 231200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Scattered thunderstorms are possible across much of the Southwest,
mainly from late in the day into the overnight. Isolated
thunderstorms are also possible from the Texas Coast across the
Southeast States. Severe thunderstorm potential appears low.
...20Z Update...
The previous forecast thinking remains the same, and no changes were
warranted with this update. See the previous discussion below.
..Weinman.. 11/22/2025
.PREV DISCUSSION... /ISSUED 1030 AM CST Sat Nov 22 2025/
...South TX/TX Coast across the Southeast and Mid-Atlantic...
Recent surface analysis places a low just off the northern
Mid-Atlantic coast. A cold front extends west-southwestward from
this low across central VA and middle TN to another low just east of
MEM. A cold front extends southwestward from this secondary low
across northern MS, central LA, and the TX Coastal Plain. This cold
front is forecast to push eastward/southeastward throughout the day,
and isolated thunderstorms are anticipated within this broad warm
sector that stretches from the TX coast through much of the
Southeast and Mid-Atlantic. Poor lapse rates and corresponding
limited buoyancy should keep updrafts weak and transient throughout
much of this region, limiting the severe potential. The only
exception is across south TX, where considerable low-level moisture
(i.e. dewpoints in the 70s) is in place, resulting in greater
buoyancy this afternoon. Even so, this region will be displaced well
south and west of the stronger mid-level flow, with weak shear
likely limiting updraft organization and persistence and tempering
the overall severe potential.
...Southwest...
Recent satellite imagery shows a well-defined upper low just off the
northern Baja California coast this morning. This low is forecast to
progress gradually eastward today, with strong mid-level flow
spreading from the base of this low eastward/northeastward across
the Southwest. Isolated to scattered thunderstorms are anticipated
ahead of this upper low, spreading from AZ this afternoon and
evening into NM overnight. In general, limited buoyancy should keep
overall thunderstorm strength low, despite strengthen deep-layer
vertical shear. The only exception is across southeast AZ, where
very strong vertical shear could overlap modest buoyancy for a few
hours this evening. Meridional orientation to the shear will favor
line segments and storm interactions, which should limit updraft
organization and the overall severe potential. That being said, a
few stronger storms with small, sub-severe hail and gusty winds are
possible. The overall severe potential is currently forecast to
remain too isolated to include any 5% probabilities.
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