450
FNUS21 KWNS 201617
FWDDY1

Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1116 AM CDT Fri Sep 20 2024

Valid 201700Z - 211200Z

...Update...
The latest model data suite continues to suggest elevated fire
weather conditions for this afternoon across portions of eastern WY
due to warm, dry, and breezy westerly downslope flow. Another area
of minor concern will be ahead of an approaching upper level trough
from southeastern NM through the Caprock of TX. A narrow corridor of
drying, and southwest sustained winds near 15 to 20 mph, could
support a couple of hours of localized elevated fire weather there.
However, recent trends in relatively higher boundary layer moisture
and increasing cloud cover over this region (less mixing expected)
do not warrant an additional Elevated area at this time. Please see
the previous discussion for details pertaining to the Southwest.

..Barnes.. 09/20/2024

.PREV DISCUSSION... /ISSUED 0132 AM CDT Fri Sep 20 2024/

...Synopsis...
...Central/Northern Plains...
A shortwave trough moving across the Canadian Provinces will bring
enhanced westerly flow across the northern Rockies. Warm and dry
downslope flow east of the Bighorn Mountains will be likely across
eastern Wyoming into portions of far southeastern South Dakota. A
period of elevated fire weather conditions will be likely, with
relative humidity reductions to 10-15% amid sustained westerly winds
15-20 mph. Fuels within this region are sufficiently dry to support
wildfire spread, with little observed rainfall in the last 30 days.


...Southwest...
An enhanced belt of mid-level flow within a deepening mid-level low
will spread across the Southwest. Boundary-layer mixing into this
strong deep-layer flow will favor dry/breezy conditions across
portions of western NM and eastern AZ during this afternoon. Locally
elevated fire-weather conditions will be possible. Fuels across the
southwest are generally unsupportive of large-fire spread at this
time. Elsewhere, a minimal overlap of breezy surface winds and low
RH should limit fire-weather concerns.

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

$$