U.S. Day 1 Fire Weather Outlook
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 050650
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0150 AM CDT Mon Jun 05 2023
Valid 051200Z - 061200Z
...Synopsis...
The backside of a mid-level trough will support widespread
northwesterly flow aloft to overspread the Northeast while a second
upper trough impinges on the Desert Southwest today. Over southern
Arizona into southwest New Mexico, modest flow aloft overspreading a
dry boundary layer will encourage 15 mph sustained southwesterly
surface winds amid 10-15 percent RH, warranting Elevated highlights.
Across the Ohio Valley into parts of the Northeast, dry northerly
flow will prevail during the afternoon hours. While wind speeds may
be too low to warrant fire weather highlights, the dry air
overspreading fuels that are relatively devoid of recent rainfall
may promote localized wildfire-spread concerns.
..Squitieri.. 06/05/2023
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U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 050652
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0152 AM CDT Mon Jun 05 2023
Valid 061200Z - 071200Z
...Synopsis...
The upper pattern for tomorrow/Tuesday will be quite similar to Day
1, with mid-level troughs meandering over the Southwest and
Northeast. The trough over the Southwest will support 15 mph
sustained southwesterly surface winds coinciding with 10-15 percent
RH for at least a few hours tomorrow afternoon, warranting Elevated
highlights for parts of southern Arizona into southwest New Mexico.
Dry northerly surface flow will occur yet again over the Ohio Valley
into the Northeast. Still, forecast surface wind speeds appear too
low to address with fire weather highlights this outlook, with
wildfire-spread potential expected to remain localized.
..Squitieri.. 06/05/2023
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 042149
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0449 PM CDT Sun Jun 04 2023
Valid 061200Z - 121200Z
In the mid levels, high pressure will remain in place over much of
the center of the CONUS through the first half of the extended
forecast period. Either side of the ridge, weak troughing will
linger over the Desert Southwest, while a broad upper low slowly
weakens over the Northeast. The limited overlap of strong flow aloft
and dry surface conditions should limit fire-weather potential. This
generally stagnant upper-air pattern will remain in place through
much of next week before the ridge weakens and shifts eastward. Late
next weekend and into week 2, more robust troughing and stronger
flow aloft may emerge over the Southwest, potentially supporting
greater fire-weather concerns late in the forecast period.
...Southwest and southern Great Basin...
As the aforementioned upper low continues to linger over the
Southwest, slight enhancement of the mid-level flow will likely
support a few hours of dry and breezy conditions D3/Tues into
D4/Wed. Ware temperatures and little moisture will support a few
hours of elevated fire-weather potential, mainly across portions of
southern AZ and southwestern NM, where fuels are the driest.
By midweek, the upper low and flow aloft will quickly weaken as the
central US ridge strengthens. With weaker winds and poor overlap of
dry and windy conditions with receptive fuels, fire-weather concerns
will likely decrease through the end of the work week. Fire-weather
conditions may reemerge late in the weekend into week 2 as stronger
mid-level flow redevelops ahead of a stronger southwestern US
trough. High pressure will shift eastward allowing the stronger flow
to spread eastward into D8/Sun. Model guidance remains uncertain on
the magnitude and timing of the stronger flow aloft along with the
receptiveness of area fuels given recent wetting rainfall. While
probabilities are too low for any areas at this time, fire-weather
concerns will likely increase given the presence of stronger winds
and seasonably dry conditions over the Southwest and southern Great
Basin.
...Midwest...
As high pressure continues to intensify over the central CONUS
through early next week, warm and dry surface conditions are
expected over much of the Midwest and OH Valley. Localized
fire-weather concerns are possible through much of next week on the
periphery of the stronger upper-level flow over the northeastern US.
However, confidence in sustained 15+ mph surface winds is low,
suggesting fire-weather concerns may remain more localized despite
drying fuels.
..Lyons.. 06/04/2023
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