245
FNUS22 KWNS 051915
FWDDY2

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0215 PM CDT Fri Sep 05 2025

Valid 061200Z - 071200Z

...Update...
Some minor changes were made to the Isolated Dry Thunderstorm area
for Saturday. The latest model trends regarding the track and ascent
associated with the initial mid-level shortwave trough moving
onshore suggest additional lightning strikes may occur further west
over the Cascades of WA. Farther south, into portions of the
northern Great Basin and far southeastern OR, fuels appear far less
receptive. Therefore, some of this region was trimmed out of the
isolated area. Please see the previous discussion below for
additional details.

..Barnes.. 09/05/2025

.PREV DISCUSSION... /ISSUED 0152 AM CDT Fri Sep 05 2025/

...Synopsis...
A mid-level trough will continue to approach the East Coast as upper
ridging builds over the Rockies and a mid-level trough remains in
place along the Pacific Northwest coast tomorrow (Saturday). A
mid-level impulse will pivot around the northwestern trough,
providing locally stronger upper support for dry and breezy
conditions across northern California into southern Oregon. At the
moment, the overlap of 15+ mph sustained southwesterly surface winds
amid 15-20 percent RH seem to be too localized to warrant Elevated
highlights at this time.

Of greater concern is the development of scattered thunderstorms
ahead of the mid-level trough over parts of the Pacific Northwest
into the northern Rockies. Here, a mix of wet and dry storm modes
will overspread a dry boundary layer, as well as dry fuel beds.
Storm motions will be relatively slow. However, the high
receptiveness of the fuels may compensate for possible wet, slow
moving storms to support lightning-induced ignitions, warranting the
introduction of isolated dry thunderstorm highlights.

...Please see www.spc.noaa.gov/fire for graphic product...

$$