Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0117 PM CST Sun Feb 23 2025
Valid 232000Z - 241200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorms should continue across portions of Louisiana and
immediate surrounding areas today. Additional isolated thunderstorms
may still occur in portions of Oregon/Washington. No severe weather
is expected.
...20Z Update...
The primary change made to the 20Z Day 1 Convective Outlook was to
trim western portions of the general thunder delineation over
Coastal TX. Low-level moisture advection and associated buoyancy is
translating east along the Gulf Coast in tandem with a mid-level
trough. As such, additional lightning flashes are most likely across
portions of LA into central/southern MS and adjacent waters. A few
lightning flashes still remain possible across portions of the
Pacific Northwest with the approach of a mid-level trough.
..Squitieri.. 02/23/2025
.PREV DISCUSSION... /ISSUED 1012 AM CST Sun Feb 23 2025/
...TX/LA...
A prominent shortwave trough is tracking eastward across TX today,
providing lift and destabilization to parts of southeast TX and LA.
Scattered thunderstorms have been occurring in this region through
the morning, but should slowly shift offshore by later this
afternoon as the upper system passes. While small hail could occur
with the strongest onshore storms, no severe weather is anticipated.
...WA/OR...
Recent water vapor loop shows a strong shortwave trough approaching
the Pacific Northwest coast. As this system approaches,
strengthening onshore flow and cold temperatures aloft will increase
the risk of at least isolated thunderstorms - mainly this evening.
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