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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
1142 AM CDT Thu Aug 18 2022

Valid 181700Z - 191200Z

...Northwest Dry Thunder...
Early morning observations show widespread clouds and stratiform
precipitation ongoing across portions of central/southern OR, and
extending north into the WA Cascades. This cloud cover appears
likely to limit solar heating and subsequent destabilization across
portions of the eastern Cascades this afternoon. Hi-res model
guidance is in good agreement showing very limited buoyancy and
strong capping. Thus, the IsoDryT has been removed this area.

Farther west, marine influence was noted across the windward slopes
of the OR Cascades. While some heating is likely, the stable marine
layer suggests storm coverage will be very isolated and tied to
local orographic effects. While some risk for isolated dry lightning
strikes remains, the highest confidence in afternoon storms has
shifted to portions of the northern Great Basin and southwestern ID.
Here, clearing and warming will support the greatest potential for
dry thunderstorms with the potential for lightning in dry fuels.

..Lyons.. 08/18/2022

.PREV DISCUSSION... /ISSUED 0132 AM CDT Thu Aug 18 2022/

...Synopsis...
Broad mid-level troughing will dominate the Plains states eastward
while weak upper ridging persists across the Interior West today. A
mid-level shortwave trough is expected to pivot around the upper
ridge and lift a monsoonal airmass, promoting high-based
thunderstorm development across portions of the Pacific Northwest by
afternoon. Isolated dry thunderstorm highlights were added to
account for the potential of several strikes occurring away from
storm cores into dry fuel beds. Otherwise, locally Elevated
conditions may acco*pany the post-cold frontal environment across
the central Plains, supporting localized potential for fire growth
wherever dry/occasionally breezy conditions overlap with patchy dry
fuels.

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