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U.S. & Canada 00-UTC 48 Hour Surface Smoke Forecast
Map is in operation from early April through October 31
U.S. Day 1 Fire Weather Outlook
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 300535
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1235 AM CDT Wed Sep 30 2026
Valid 301200Z - 011200Z
...NO CRITICAL AREAS...
...Synopsis...
A ridge of high pressure will transition into the western CONUS,
bringing warmer temperatures and a lighter wind regime to California
and the western Great Basin today. The center of an eastward
progressing mid-level low will enter New Mexico, gradually weakening
as it becomes reincorporated within broader troughing. Southerly
flow will deepen ahead of the low, providing ample moisture
transport bringing PWAT values above the 95th percentile across much
of the central CONUS into the Upper Midwest. This system will induce
widespread precipitation over an environment stressed by long-term
drought, particularly across portions of the southern Plains and the
New Mexico/Colorado Rocky Mountains. Ahead of the advancing
moisture, a residual hot and dry airmass will remain in place across
the lower Mississippi River Valley and Mid-South where receptive
fuels exist; however, light southerly winds of less than 15 mph
should limit a broader fire weather threat.
..Elizalde-Garcia.. 09/30/2026
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U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 300537
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1237 AM CDT Wed Sep 30 2026
Valid 011200Z - 021200Z
...NO CRITICAL AREAS...
...Synopsis...
A mid-level low over the southern Plains will transition into
weakening upper troughing as it progresses northeastward on Day
2/Thursday. At the surface, a slow-moving cold front will extend
from the Great Lakes region into the Texas Hill Country. Widespread
rainfall will continue along the front, bringing much-needed relief
to dry fuels in the eastern Arkansas River Basin. Meanwhile, ridging
will rapidly expand over the Desert Southwest, promoting
above-normal temperatures and dry conditions in much of the western
Great Basin and California. Fuels will continue to dry under these
meteorological conditions, but generally light surface winds should
limit fire weather concerns.
..Elizalde-Garcia.. 09/30/2026
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 292118
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0418 PM CDT Tue Sep 29 2026
Valid 011200Z - 071200Z
...Synopsis...
An upper-level low over the southern/central Plains on Day
3/Thursday will accelerate northeastward and merge into broader
westerly flow across the Midwest and Northeast by Day 4/Friday.
Widespread rainfall across the southern and central Plains and
Midwest will reduce fire weather concerns across this region.
Persistent warm and dry conditions amid very dry fuels across the
Mid-South Day 3/Thursday will give way to increasing Gulf moisture,
rising humidity and at least some rainfall across the region
beginning Day 4/Friday as cold front moves into the Ohio and
Tennessee River Valleys.
West of the Continental Divide, a building ridge through late week
will support a considerable warming and drying trend across the
Western U.S. although resultant weak surface pressure gradients and
light winds will limit a broader fire weather threat. A weak
mid/upper wave could bring a thunderstorm threat to the Oregon and
Northern California vicinity on Day 6/Sunday although remaining
forecast uncertainty in timing and convective coverage precludes
introducing dry thunderstorm probabilities at this time. The overall
ridging pattern across the West is likely to extend into next week,
resulting in drying/curing of fuels.
..Williams.. 09/29/2026
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