ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 040644
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0144 AM CDT Sat Oct 04 2025
Valid 041200Z - 051200Z
...Synopsis...
A shortwave trough will rapidly eject over the central Rockies into
the northern/central Plains today and tonight. Strong southwesterly
flow aloft will overspread a dry and warm air mass south and east of
a deepening surface low over the central Plains. Warm temperatures,
strong southerly winds and dry conditions will support some elevated
fire-weather potential.
...Central and Northern Plains...
South of the intensifying surface low and trailing cold front, gusty
southerly winds 20-30 mph are likely through the afternoon over
portions of SD into NE and northern CO. Unusually warm temperatures
this afternoon along with downsloping should bolster low afternoon
RH. This strong mixing should limit surface moisture with RH values
of 15-25% across the central Plains. As winds increase, continued
curing of fine fuels will likely support several hours of elevated
fire-weather potential.
...Midwest...
Farther east, diurnal humidity decreases will be more modest into
the Midwest where low-level moisture advection is expected to be
stronger. However, very dry surface conditions over preceding weeks
have resulted in plentiful and dry fine fuels outside of recent
localized precipitation. The increasingly strong southerly winds
with gusts of 25-30 mph will support some elevated fire-weather
potential this afternoon despite the poor overlap with lower RH.
...Southern Plains...
South of the surface low, a trailing lee trough will bolster surface
winds over parts of eastern CO, western KS and the OK/TX Panhandles.
While fuels here are not as receptive and RH values higher, some
drying and gusty winds around 15-25 mph are expected. This could
support some localized fire-weather concerns within locally drier
fuels.
..Lyons.. 10/04/2025
U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 040646
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0146 AM CDT Sat Oct 04 2025
Valid 051200Z - 061200Z
...Synopsis...
The upper trough over the central Plains is forecast to lift
northward into the Great Lakes as the surface low continues to
intensify near the Canadian border. A trailing cold front will sweep
eastward over the Northern Plains with wetting rainfall likely along
and behind it. Ahead of the front, continued warm/dry conditions are
likely over parts of the Midwest where elevated fire-weather
conditions are possible.
...Midwest...
Ongoing flash drought across much of the Midwest will continue to
support drying fine fuels this weekend. Unseasonably warm
temperatures and increasing southerly winds gusting 15-25 mph during
the afternoon will support a few hours of elevated fire weather
conditions on Sunday. The highest confidence in sustained elevated
conditions will be across portions of eastern IA into northwestern
IL. Here, deep mixing should limit returning surface moisture while
winds are expected to remain strong ahead of the cold front trailing
the surface low farther north.
...Southern High Plains...
Along a trailing lee trough, breezy southwesterly winds are likely
over portions of the southern High Plains Sunday afternoon. While
not widespread, warm temperatures and downsloping should support RH
values below 30% on an isolated basis. The favorable RH and increase
in winds could allow for some locally elevated fire-weather
conditions given increasingly dry fine fuels.
..Lyons.. 10/04/2025
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 032042
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0342 PM CDT Fri Oct 03 2025
Valid 051200Z - 111200Z
An elongated trough across the West into the northern Plains will
remain in place through roughly the middle of next week. The trough
will eventually lift northward and move east into the Northeast by
the end of next week. A surface front will move through the
northern/central Plains this weekend and stall early next week. The
front will then progress south and east when the upper trough in the
Upper Midwest/Northeast intensifies and moves eastward. High
pressure will then be the dominant feature east of the Divide. Fire
weather concerns will generally be low on account of limited overlap
of stronger winds and dry fuels. Additionally, precipitation is
possible along the front as it moves south and east. That said, some
concerns are possible this Sunday ahead of the front, particularly
where diurnal heating will be greatest.
...Upper Midwest...
Given the ongoing drought across much of Illinois, fuels have been
quite dry. Warm temperatures and a moderately strong surface
pressure gradient during the afternoon will support elevated to
possibly locally critical fire weather on Sunday. The highest
confidence (with support from ensemble guidance) is within
northern/central Illinois.
Farther northwest, closer to the front, enhanced southwesterly winds
will be possible across parts of western Iowa into southern
Minnesota. Given the potential for cloud cover, it is not clear how
low RH will fall during the afternoon. Fuels are not as receptive as
in Illinois, but finer fuels should be sufficiently dry to promote
fire spread if the meteorological factors can align. Confidence in
critical fire weather is too low for highlights, but at least
locally elevated fire weather is expected.
..Wendt.. 10/03/2025