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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 140657
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1257 AM CST Sat Nov 14 2026
Valid 141200Z - 151200Z
...NO CRITICAL AREAS...
...Synopsis...
Deep, longwave troughing will persist across much of the eastern
U.S. today as negatively tilted upper troughing progresses eastward
from the Intermountain West into the central/southern Plains.
Combined with another robust upper trough that will approach the
Pacific Northwest coastline, this will continue to support chances
for precipitation across parts of the Northeast and much of the
West, with rain chances also spreading into the southern/central
Plains. Meanwhile, surface high pressure over the upper/mid
Mississippi Valley will slide farther east/southeast into the lower
Ohio Valley, with cooler and drier conditions continuing across much
of the Southeast. While minimum RH values in the 25-35% range are
forecast across portions of the Southeast atop modestly dry fuels,
generally light surface winds (~10 mph or less) will suppress fire
weather concerns today.
..Chalmers.. 11/14/2026
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U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 140700
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0100 AM CST Sat Nov 14 2026
Valid 151200Z - 161200Z
...NO CRITICAL AREAS...
...Synopsis...
Deep, longwave troughing over the eastern U.S. will begin to depart
offshore on D2/Sunday as surface high pressure over the Midwest
continues to bring cooler/drier conditions to portions of the
Southeast. Elsewhere, a robust upper trough approaching the Pacific
Northwest will bring additional chances for rain to parts of the
West Coast, with a separate area of upper troughing also bringing
rain chances to portions of the southern Plains/lower Mississippi
Valley. While drier conditions are expected to continue across
portions of the Southeast (minimum RH values in the 20-35% range),
broad fire weather concerns are not anticipated as winds are
forecast to remain light (generally less than 10 mph).
..Chalmers.. 11/14/2026
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 132143
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0343 PM CST Fri Nov 13 2026
Valid 151200Z - 211200Z
...Synopsis...
An upper-level trough will gradually exit the East Coast by early
next week as broader ridging shifts into the north-central U.S. and
Canadian Prairies. Surface high pressure along with a period of
prolonged dry conditions and cooler temperatures will settle into
much of the Southeastern U.S. in the wake of the exiting trough. Dry
fuels should be maintained across the region but light winds will
tend to limit a greater fire weather threat through the middle of
next week across the Southeast and mid/lower MS River Valley.
An active troughing pattern will evolve across much of the western
U.S. through the forecast period, shifting deeper Pacific moisture
inland. This should subdue fire weather concerns across the
Intermountain West through next week. Meanwhile, portions of the
northern and central Plains should remain dry into Day 5/Tuesday.
Extended guidance suggests a stronger shortwave trough ejecting east
of the Rockies on Day 6/Wednesday, potentially promoting enhanced
downslope winds and drying over the central High Plains. Ambiguity
in the timing of the trough ejection and uncertainty in preceding
precipitation on Day 2/Saturday (and potential for additional
precipitation with the stronger trough arrival) limits
predictability of the fire weather threat for the central High
Plains on Day 6/Wednesday.
..Elizalde-Garcia.. 11/13/2026
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