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Day 2 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
0220 PM CDT Mon Sep 12 2022

Valid 131200Z - 141200Z

The main change to this outlook was to add Elevated highlights
across portions of the northern High Plains. As a mid-level trough
traverses the Rockies and a surface low intensifies across eastern
Montana, dry southeasterly surface winds are likely across eastern
Wyoming into far southeast Montana. The latest guidance consensus
suggests that Elevated winds/RH should develop for a few hours
around afternoon peak heating. Otherwise, the previous forecast (see
below) remains on track for portions of the northern Sierra into the
southern Cascades.

..Squitieri.. 09/12/2022

.PREV DISCUSSION... /ISSUED 0157 AM CDT Mon Sep 12 2022/

...Synopsis...
A mid/upper-level ridge initially centered over the Rockies will
shift eastward toward the MS Valley, while broad/enhanced
west-southwesterly midlevel flow develops over the western CONUS.
Embedded within the west-southwesterly midlevel flow, a negatively
tilted shortwave trough should cross the central Rockies, resulting
in the deepening of a surface low in the lee of the northern
Rockies. 

...Northern and Central Plains...
Peripheral to the deepening surface low, a tight pressure gradient
will result in strengthening winds over the central High Plains and
northern Plains. For the central High Plains, 10-15 percent RH
co*bined with 15 mph sustained south-southeasterly surface winds may
favor elevated conditions. However, recent precipitation over this
area casts uncertainty on receptiveness of fuels -- precluding
Elevated highlights. Farther north over the northern Plains, breezy
east-southeasterly post-frontal surface winds near 15-20 mph are
expected. With that said, cool boundary-layer conditions within the
post-frontal airmass should temper any substantial RH reductions --
generally limiting the fire-weather risk.  

...Lee of the Northern Sierra and Southern Cascades...
The enhanced west-southwesterly midlevel flow perpendicular to the
northern Sierra and southern Cascades will result in downslope
warming/drying along with 10-15 mph sustained westerly surface
winds. Those winds and 15-20 percent minimum RH could yield locally
elevated conditions in the immediate lee of the northern Sierra and
southern Cascades. However, these conditions appear too localized
for Elevated highlights at this time.

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