U.S. Day 1 Fire Weather Outlook
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 291651
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1051 AM CST Wed Jan 29 2025
Valid 291700Z - 301200Z
...NO CRITICAL AREAS...
No changes are needed to the D1 Fire Weather Outlook. See previous
discussion below for more information.
..Thornton.. 01/29/2025
.PREV DISCUSSION... /ISSUED 1253 AM CST Wed Jan 29 2025/
...Synopsis...
Fire weather concerns are expected to be limited today across the
country, though localized concerns may emerge across the southern
High Plains as well as across parts of the Mid-Atlantic.
...Southern High Plains...
An upper low over the Southwest will continue to meander east into
the southern Plains. While widespread rain is expected to overspread
much of the southern Plains, portions of West Texas and far southern
NM will likely remain dry while west/southwest winds strengthen
through late afternoon. The eastward advection of a dry air mass
(currently in place across southern AZ/southwest NM) coupled with
some degree of downslope warming/drying will support RH reductions
into the low 20s and teens. Elevated fire weather conditions are
possible, but modestly receptive fuels (ERCs generally below the
80th percentile) should limit fire concerns.
...Mid-Atlantic...
Further east, a strong low migrating across the Northeast will
induce 15-20 mph westerly winds along the lee of the southern to
central Appalachians. Downslope warming will likely support
afternoon RH minimums between 20-30%. Elevated conditions appear
likely across central to eastern VA and NC, but as with the southern
High Plains, fuels are generally unreceptive. However, very fine
(1-hour) fuels may see sufficient drying for localized fire weather
concerns this afternoon.
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U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 291956
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0156 PM CST Wed Jan 29 2025
Valid 301200Z - 311200Z
...NO CRITICAL AREAS...
No changes are needed to the current D2 Fire Weather Outlook. See
previous discussion below for more information.
..Thornton.. 01/29/2025
.PREV DISCUSSION... /ISSUED 0145 AM CST Wed Jan 29 2025/
...Synopsis...
Fire weather potential appears limited across the country on
Thursday, though some concerns may emerge across the Big Bend region
of southern Texas depending on fuel trends over the next 48 hours.
The upper low currently over the Southwest is expected to eject into
the southern Plains through late Thursday. Surface cyclogenesis is
expected to become more pronounced Thursday afternoon across the
central Plains, resulting in strengthening pressure gradient winds
across much of TX. Westerly winds between 15-25 mph will be common,
and dry air advection, coupled with deep boundary-layer mixing, will
promote RH reductions down to 15-20% across the greater Big Bend
region. Recent ensemble guidance shows reasonably high probabilities
for sustained elevated fire weather conditions across this region
with low to moderate probabilities (30-50%) for critical conditions.
While confidence in reasonably high for at least elevated fire
weather conditions, fuels across this region are not overly
receptive with ERCs generally below the 80th percentile and 10-hour
fuel moisture values above the 50th percentile. Fire weather
highlights may be needed in future forecast updated if fine fuels
can sufficiently dry by Thursday afternoon.
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 282155
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0355 PM CST Tue Jan 28 2025
Valid 301200Z - 051200Z
Fire weather concerns will remain low in the early part of the
extended forecast. An upper-low that has remained over the western
US will eject across the southern Rockies into the Plains
D2/Wednesday through D3/Thursday, bringing windy conditions but also
chances for precipitation across the central/southern Plains. A
surface cyclone will develop across the southern Plains D3/Thursday,
with strengthening of a lee trough across the High Plains. This
pattern will favor a period of elevated fire-weather conditions,
particularly across southwestern and western Texas where freeze
cured grasses may support risk for fire spread. Elsewhere, marginal
fuels and chances for additional precipitation should limit the
potential for critical conditions.
Zonal flow behind this departing system will favor periods of
enhanced westerly flow overspreading the southern Rockies through
the weekend, with lee troughing redeveloping D5/Saturday and
D6/Sunday. This will bring potential warm/dry downslope flow across
portions of western Texas into the Oklahoma Panhandle. Some portion
of this region will have seen recent rainfall. However, Elevated to
locally Critical fire-weather concerns will be possible across far
western Texas where less precipitation was received. For now,
confidence is low in highlighting any specific areas.
..Thornton.. 01/28/2025
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