SPC Day 1 Fire Weather Outlook

[NorthGeorgiaWX]

SPC Day 1 Fire Weather Outlook

Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
0159 AM CDT Tue Jul 23 2024

Valid 231200Z - 241200Z

...Synopsis...
A broad upper trough over the Northwest will remain in place west of
a weakening upper ridge centered across the northern Rockies.
Stronger flow aloft will gradually overspread the Northwest and
northern Rockies through the week. Isolated dry thunderstorms and
gusty downslope winds will promote elevated fire-weather potential
today and tonight.

...Northwest and northern Rockies...
Lingering mid-level moisture ahead of the consolidating Pacific
trough will again support the risk for thunderstorms across the
Northwest and northern Rockies this afternoon and evening. While
weaker than previous days, subtle ascent and diurnal heating over
the terrain should allow for isolated storms to develop across parts
of the northern Great Basin and Northwest by early afternoon. Low
precipitation efficiency, owing to PWATs under 1 inch, and low
surface RH will support the risk for lightning with little to no
wetting rainfall. With area fuels still receptive to ignitions,
IsoDryT probabilities have been maintained.

West/southwest flow aloft is forecast to increase over the northern
Rockies and Cascade Gaps ahead of the trough. This may promote
several hours of gusty downslope winds across parts of eastern ID
and western MT. Model guidance shows surface winds of 15-25 mph
overlapping with RH values below 25%. This, along with the increase
in lightning and numerous ongoing fires, will support the potential
for elevated fire-weather conditions this afternoon.

..Lyons.. 07/23/2024

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

Read more

View the full article