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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 140552
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1252 AM CDT Tue Jul 14 2026
Valid 141200Z - 151200Z
...Synopsis...
Broad ridging aloft will encompass much of the northern CONUS,
promoting hot, dry conditions across portions of the Northern Plains
and Upper Midwest. A surface trough extending northeastward into the
western Dakotas will facilitate stronger low-level winds within the
very dry air mass, heightening fire weather concerns across portions
of the northern High Plains into central WY and north-central CO
this afternoon. A mid-level trough approaching the Pacific Northwest
along with a more restricted/peripheral monsoon moisture pool, will
support isolated dry thunderstorms across the more complex terrain
of northern CA into OR and far northwestern NV this afternoon.
...Northern High Plains and Central Wyoming...
A broad subsidence regime in place across the central U.S. evidenced
by recent water vapor satellite imagery will sustain very warm and
dry conditions today while supporting well above normal temperatures
for the Northern Plains. A surface trough will promote increasing
southeast winds of around 15 mph across portions of the northern
High Plains amid RH as low as 10 percent by peak heating. These
conditions combined with critically dry fuels (ERCs in the 95-98th
percentile range) will yield elevated fire weather conditions this
afternoon. The wind direction veers to the east across central
Wyoming amid a similarly dry fuelscape and low RH environment. A
minor expansion of elevated highlights was warranted based on latest
forecast guidance.
...Southern and Central Oregon into portions of northeastern
California and northwestern Nevada...
A plume of deeper monsoon moisture over the western Great Basin and
Sierra Nevada will arc northward around the western edge of the
mid-level ridge through early morning, reaching the Northern Rockies
this afternoon. Peripheral moisture, with precipitable water values
tapering off to 0.70" closer to the Cascade Crest will remain across
portions of central OR into northern CA. An upper trough impinging
upon the Pacific Northwest along with afternoon instability will
promote isolated dry thunderstorms across northern CA and southern
OR. Latest CAM guidance suggests a threat of nocturnal convection,
lingering into early Wednesday morning, along and east of the OR
Cascades as a subtle embedded wave accelerates northward across the
region. Isolated dry thunderstorm highlights were expanded as far
north as the Columbia River Gorge where fuels are incrementally more
receptive. Anomalously high atmospheric moisture should support
higher probabilities of wetting rain cores across eastern OR and
northwest NV with precipitable water values ranging from 1.2-1.4".
Thus, trimmed the eastern extent of isolated dry thunderstorm threat
to account for expected mitigating rainfall.
..Williams.. 07/14/2026
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U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 140555
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1255 AM CDT Tue Jul 14 2026
Valid 151200Z - 161200Z
...Synopsis...
An expansive mid-level ridge will remain over the central U.S. as a
surface trough lingers across the northern Plains, bringing another
day of fire weather concerns to parts of the northern High Plains
via dry and breezy conditions. Gusty onshore winds across the
California Coastal Ranges into the Central Valley will promote a
fire weather threat Wednesday as fuels continue to dry.
...Central California Coastal Ranges and Central Valley...
Onshore flow aided by downslope drying and terrain accelerated winds
will support elevated fire weather conditions across the central CA
coastal ranges into the adjacent Central Valley. Fuels continue to
dry with ERC values reaching the 90-95th percentile range under very
warm temperatures. These winds generally from the west and northwest
at 10-15 mph (locally 20-25 mph in favored terrain gaps) combined
with RH of 15-20% in the coastal ranges to as low as 10% in the
Central valley, will support elevated fire weather conditions
Wednesday afternoon and early evening.
...Northern High Plains...
Hot and dry conditions under a stagnant mid-level ridge over the
central U.S. are expected across portions of the northern Plains
Wednesday. At the surface, a trough over southeastern MT will
bolster low-level southeasterly flow (up to 15 mph sustained) over
portions of western SD, NE Panhandle and northern CO. These winds
coinciding with RH in the 15-20% range will yield elevated fire
weather conditions amid very dry fuels Wednesday afternoon. Elevated
highlights were extended into central WY given latest forecast
guidance with expected RH as low as 10 percent and steady easterly
winds.
..Williams.. 07/14/2026
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 132054
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0354 PM CDT Mon Jul 13 2026
Valid 151200Z - 211200Z
...Synopsis...
A strong upper high will persist over the central/northern Plains
through the end of this week into the early weekend. Upper-level
troughing will continue near and off the Pacific Northwest coast
with monsoonal moisture streaming northward across much of the
Intermountain West this week; meanwhile, daily monsoonal
thunderstorms are likely across the Southwest into the Great Basin.
An upper-level trough is forecast to move near/into the Pacific
Northwest early Day 4/Thursday, potentially suppressing moisture
south and eastward. However, model spread and ambiguity in the
spatial extent/strength of troughing yields significant uncertainty
in the progression of the upper pattern across the West. Farther
east, a deep upper-level trough is expected to weaken the ridge over
the Great Lakes and Northeast as it digs southward on Days
2-3/Tuesday-Wednesday, leading to unsettled conditions across the
region through the remainder of the forecast period.
...Central to northern High Plains...
Hot, dry, and breezy conditions are likely across portions of
eastern Wyoming, western South Dakota, western Nebraska and eastern
Colorado on Day 3/Wednesday through at least Day 4/Thursday. While
RH is expected to recover overnight, south-southeast winds are
likely to remain breezy amid dry fuels and hot daytime temperatures.
40% Critical probabilities have been maintained; however, may need
to be confined in future outlooks as predictability increases in the
evolution of the upper pattern.
...Portions of northeastern California and the Central Valley,
western Great Basin, and far south-central Oregon...
Warm daytime temperatures and low RH will contribute to drying fuels
across the California Coastal Ranges into the Central Valley. ERCs
are forecast to approach the 90-95th percentile mid-late week amid
dry and breezy conditions, supporting any new ignitions and the
emergence of lightning holdovers from wet/dry thunderstorms early in
the forecast period. 40% Critical probabilities remain on Days
3-4/Wednesday-Thursday to account for this threat. Farther north,
guidance has backed off on the timing of stronger winds overlapping
low RH, resulting in 40% Critical probabilities being removed on Day
3/Wednesday across northeastern California and adjacent areas. Yet,
the potential for stronger flow amid a returning dry airmass on Day
4/Thursday warrants the introduction of 40% Critical probabilities.
..Elizalde-Garcia.. 07/13/2026
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