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U.S. Day 1 Fire Weather Outlook
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 271523
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1023 AM CDT Tue Oct 27 2026
Valid 271700Z - 281200Z
...NO CRITICAL AREAS...
No changes were made to the forecast as previously described. Recent
widespread rainfall and cooler-than-normal daytime temperatures have
limited the overall fire environment threat across the CONUS. In
addition to westerly flow (sustained 15-25 mph surface winds) over
WY and western SD, northeasterly flow (sustained 10-15 mph surface
winds) over much of the Florida Peninsula is worth mentioning.
However, forecast near-normal temperatures amid afternoon RHs
unlikely to fall below 50% will similarly preclude a significant
fire weather risk there.
..Stearns.. 10/27/2026
.PREV DISCUSSION... /ISSUED 1253 AM CDT Tue Oct 27 2026/
...Synopsis...
Fire weather concerns remain low across the CONUS today. A robust
60-70 kt mid-level jet on the southern periphery of an upper trough
will overspread WY into the northern Plains. Surface lee troughing
across the northern High Plains and the presence of a strong
mid-level jet will support downslope enhanced westerly winds of
20-30 mph and minimum RH of 20% across portions of central/eastern
WY into western SD. However, cooler daytime high temperatures in the
50s to low 60s amid a marginal fuel environment will limit a broader
fire weather threat.
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U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 271855
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0155 PM CDT Tue Oct 27 2026
Valid 281200Z - 291200Z
...NO CRITICAL AREAS...
The previous forecast remains on track as described. A lack of
strong wind where fuels are available to burn, in particular over
the southern CONUS, will preclude any significant fire weather
threat on Day 2/Wednesday.
..Stearns.. 10/27/2026
.PREV DISCUSSION... /ISSUED 1255 AM CDT Tue Oct 27 2026/
...Synopsis...
Reduced fire weather concerns are expected across the CONUS on Day
2/Wednesday. Low-amplitude upper troughing will continue across the
northern CONUS while upper ridging begins to weaken over the
Southeast. High temperatures in the 80s and minimum RH values of
25-30% will overlap drought-stressed fuels in the lower MS River
Valley. However, lighter prevailing winds should limit a fire
weather threat over this region.
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 262125
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0425 PM CDT Mon Oct 26 2026
Valid 281200Z - 031200Z
...Synopsis...
An active weather pattern will persist across the Northwest, Plains
and the Upper Midwest as a troughing regime contributes to cloud
cover, precipitation and cooler temperatures reducing overall fire
weather concerns through late this week. More amplified troughing
emerges across the western U.S. over the weekend promoting
increasing southwest flow aloft over the region. This could invite a
plume of deeper subtropical moisture into the West, bringing
additional precipitation across much of Intermountain West this
weekend and early next week.
A broad ridging pattern over the eastern U.S. should be maintained
through Day 5/Friday supporting above normal temperatures and mainly
dry conditions for much of the region. Fuels across the lower MS
River Basin into the Deep South remain quite receptive. Ridging
aloft and surface high pressure across the Appalachians will allow
areas of critically low RH to emerge each afternoon through Day
5/Friday amid the dry fuelscape. However, light surface winds will
attenuate the fire weather threat over this region. Precipitation
chances increase for the lower MS River Valley and Southeast over
the weekend as the surface high over the Appalachians repositions
over the Northeastern U.S. This will aid in northward moisture
transport from the Gulf as a series of short wave troughs within a
more pronounced subtropical jet impacts the region.
..Williams.. 10/26/2026
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