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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
1220 AM CDT Thu Sep 26 2024

Valid 261200Z - 271200Z

...Synopsis...
The pattern across the US on Thursday will be characterized by
Hurricane Helene moving inland and beco*ing absorbed into the
upper-level flow across the eastern US as a ridge of high pressure
continues to be in place across the western US. Across the northern
Rockies, a shortwave trough will traverse the northern periphery of
the ridge with a dry cold front sagging southward into the northern
Plains through the period. Ahead of the front, relative humidity
around 15-20 percent will be possible across portions of eastern
Wyoming into South Dakota. The frontal passage will bring an
increase in surface winds, with sustained winds around 20-25 mph.
There is some question as to what the duration of overlap will be
between the lower relative humidity and stronger wind speeds. hr**
probabilities of Elevated to Critical conditions remain generally
around 30-40 percent. Fuels across much of eastern Wyoming into
South Dakota are critically dry. Taking into account the possibility
of briefly Elevated to locally Critical conditions, an Elevated area
was included with this outlook given the uncertainty.

..Thornton.. 09/26/2024

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