U.S. Day 1 Fire Weather Outlook
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 241625
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1125 AM CDT Thu Apr 24 2025
Valid 241700Z - 251200Z
...Northeast New Mexico...
Downslope enhancement and drying off the Sangre De Cristo Mountains
should support a few hours of Elevated fire weather conditions
across portions of northeastern New Mexico this afternoon. Elevated
highlights were added to reflect expected breezy southwest winds
coupled with a very dry, well-mixed boundary layer supporting
afternoon relative humidity as low as 10 percent.
...Florida...
A steady east-southeast wind, relative humidity in the 30-40 percent
range this afternoon along with very dry fuels will continue to
support Elevated fire weather conditions across portions of the
western Florida Peninsula.
..Williams/Lyons.. 04/24/2025
.PREV DISCUSSION... /ISSUED 0114 AM CDT Thu Apr 24 2025/
...Synopsis...
A low-amplitude mid-level trough will traverse New England and eject
into the Atlantic as another mid-level trough amplifies along the
West Coast today. Surface high pressure and overall cooler
temperatures will overspread much of the northern U.S. while broad
surface troughing and associated low-level moisture return becomes
established from the Great Plains to the East Coast. As such,
relatively quiescent fire weather conditions are expected over much
of the U.S. today. Dry conditions will persist across the Desert
Southwest, but surface wind fields should be too weak to necessitate
Elevated highlights. Some dry and breezy conditions are possible
across the western Florida Peninsula, where 30-40 percent RH will
overlap with 10-15 mph sustained southeasterly surface winds by
afternoon peak heating. Elevated highlights have been maintained in
this area given dry fuels.
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U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 241937
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0237 PM CDT Thu Apr 24 2025
Valid 251200Z - 261200Z
Slight modifications were made to the existing Elevated fire weather
threat area across portions of southeastern Arizona into New Mexico.
Residual outflow boundary moisture from convection expected this
afternoon across the Southern High Plains combined with
south-southeast flow should keep fire weather threat limited across
southeastern New Mexico. Therefore, Elevated highlights for Friday
were trimmed for this area.
..Williams/Lyons.. 04/24/2025
.PREV DISCUSSION... /ISSUED 0127 AM CDT Thu Apr 24 2025/
...Synopsis...
A mid-level trough will slowly advance eastward across the Southwest
while another mid-level trough amplifies over the Great Lakes
tomorrow (Friday). Surface cyclone development is possible across
portions of the Great Basin Friday afternoon, encouraging warm and
dry southerly flow across eastern Arizona into central and southern
New Mexico. Sustained 15-20 mph southerly surface winds will
coincide with 15 percent RH and overspread dry fuels for several
hours, warranting the introduction of Elevated highlights.
Dry conditions will also persist across portions of the
Mid-Atlantic. While the surface wind field is expected to be too
weak on a widespread basis to justify Elevated highlights, locally
breezy conditions overspreading dry fuel beds will exacerbate any
localized wildfire-spread potential that exists.
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 232158
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0458 PM CDT Wed Apr 23 2025
Valid 251200Z - 011200Z
A potent upper trough is expected to translate east-northeastward
from the Desert Southwest into the Northern Plains from Day 3/Friday
through Day 6/Monday. Intensifying mid-level flow over ahead of the
trough over a dry boundary layer will present a multi-day fire
weather threat across portions of the Southwest and adjacent High
Plains where anticipated precipitation will be limited over existing
dry fuels.
...Southwest and Southern Great Basin...
Increasing southwest winds associated with a eastward progressing
upper-level trough will couple with low daytime relative humidity to
generate several days of Elevated to potentially Critical fire
weather conditions across portions of eastern Arizona, New Mexico
and adjacent High Plains, where dry fuels remain or are expected to
develop. The strongest wind and dry air mass alignment, coinciding
with the arrival of the mid-level jet max, will be on Day 5/Sunday
across portions of southern and central New Mexico where a 70
percent chance of Critical fire weather conditions were introduced.
Model guidance depicts the eastward progression of the upper-trough
and subsequent lee surface trough ejection into the Northern Plains
by Day 6/Monday. However, forecast uncertainty exists with spatial
distribution of southern High Plains convective precipitation which
could tame fuel receptiveness to spread across the area.
...Florida...
A very dry fuelscape remains across the Florida Panhandle. A cold
front descending into the Southeast by early next week with greater
probabilities of wetting rains across northern Florida. Continued
east-southeast winds along with dry fuels could present at least an
Elevated fire weather threat across the southern half of Florida
through the forecast period.
..Williams/Lyons.. 04/23/2025
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