258
ACUS02 KWNS 301712
SWODY2
SPC AC 301710

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1210 PM CDT Sat Aug 30 2025

Valid 311200Z - 011200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe potential is low, though a couple of strong storms cannot be
ruled out in the southern Plains or Northwest Sunday.

...Synopsis...
Across much of the US, broad northwesterly flow aloft will continue
as a large upper trough persists over the eastern CONUS. To the
west, mid-level ridging will continue to build over the Rockies,
allowing stronger northwesterly flow to develop over the central
portions of the country. Embedded within the modest flow aloft, a
weak vort max will move from the Rockies over the central/southern
Plains. A diffuse surface front will accompany this feature, serving
as a focus for scattered showers and thunderstorms Sunday
afternoon/evening.

...Plains...
Ahead of the weak vort max and cold front, seasonably high surface
moisture will be in place over the Plains and Gulf Coast. Remnant
shower and thunderstorm activity should be ongoing at the start of
the period, likely limiting diurnal heating through the day. The
poor lapse rates and remnant cloud cover will favor only modest
destabilization. Still, scattered storms should form and cluster
ahead of the front. A couple of strong storms with sub-severe wind
and hail cannot be ruled out. However, with vertical shear largely
sub 30 kt, the threat for organized severe thunderstorms appears
low.

...Northern Cascades...
West of the strong ridge, a weak upper low will meander off the
Northwest Coast. Weak ascent form this feature, and heating of the
air mass across central WA State could allow for isolated
thunderstorms late Sunday into early D3/Monday. However, strong
capping and the weak ascent casts some doubt on storm coverage.
Should storms form, a stray gust or two cannot be ruled out owing to
steep low-level lapse rates.

..Lyons.. 08/30/2025

$$