RSS Mesoscale Discussions from Storm Prediction Center
SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0150 PM CST Sun Feb 22 2026
Valid 222000Z - 231200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not expected today or tonight.
...Synopsis...
No significant changes have been made to the ongoing forecast.
..Hart.. 02/22/2026
.PREV DISCUSSION... /ISSUED 1010 AM CST Sun Feb 22 2026/
...Synopsis...
Isolated thunderstorms are expected along the Mid-Atlantic and New
England coast this afternoon and tonight as offshore bomb
cyclogenesis occurs. Some of this lightning activity will occur
with heavy snow.
Elsewhere, a few afternoon thunderstorms may accompany a cold front
as it sags southward across the central FL peninsula. Also,
isolated thunderstorms may move ashore over western WA beneath very
cold temperatures aloft. In all of these places, weak instability
will preclude the risk of severe thunderstorms.
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SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
1242 PM CST Sun Feb 22 2026
Valid 241200Z - 251200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorm potential appears low on Tuesday.
...Synopsis...
A vigorous mid/upper-level shortwave trough is forecast to move
southeastward from the northern Plains into the Great Lakes and Ohio
Valley on Tuesday. This system will be accompanied by a deepening
surface low and trailing cold front. While this system may be
accompanied by shallow/weak convection, very meager
moisture/instability should limit thunderstorm potential.
Upstream, a mid/upper-level shortwave trough will move into parts of
the Pacific Northwest, helping to dampen an upper ridge that will
initially be in place over the region. Rain and gusty winds will
accompany this system across coastal OR and northern CA, but
thunderstorm potential appears low due to negligible instability.
..Dean.. 02/22/2026
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