ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 080441
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1141 PM CDT Mon Apr 07 2025
Valid 081200Z - 091200Z
...Synopsis...
Zonal flow will become established across the CONUS, with multiple
embedded impulses expected to progress eastward within the zonal
flow regime. One such mid-level impulse will overspread the central
Rockies this afternoon, supporting surface cyclone development over
the Plains states. Downslope flow is likely over the central High
Plains, with the latest guidance consensus showing 15-25 mph
sustained westerly surface winds coinciding with 20 percent RH,
warranting the maintenance of Elevated highlights given modestly dry
fuels. Occasionally dry and windy conditions are also possible
across portions of the central and southern High Plains, though
recent appreciable precipitation accumulations have dampened fuels,
precluding fire weather highlights.
..Squitieri.. 04/08/2025
U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 080444
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1144 PM CDT Mon Apr 07 2025
Valid 091200Z - 101200Z
...Synopsis...
A mid-level trough will amplify over the central U.S., with an
embedded 500 mb speed max poised to overspread the central Plains
tomorrow (Wednesday). As surface high pressure builds over the
northern Rockies, downslope flow across the central High Plains will
promote another day of dry/windy conditions. 15-25 mph sustained
westerly surface flow amid 20 percent RH will overspread dry fuels,
warranting the introduction of Elevated highlights. Elsewhere across
the central and southern High Plains, modestly dry and breezy
conditions may develop and overspread fuels that have recently
experienced appreciable precipitation accumulations, with no fire
weather highlights introduced at this time.
..Squitieri.. 04/08/2025
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 072159
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0459 PM CDT Mon Apr 07 2025
Valid 091200Z - 151200Z
An amplifying upper-level wave pattern is expected to develop across
the U.S. beginning day 3/Wednesday with broad ridging over the West
and a deepening trough, cold front intrusion and attendant
precipitation across the eastern U.S. Extended model guidance shows
another upper trough entering the Intermountain West which could
introduce a MULT day fire weather threat to portions of the Desert
Southwest starting on Day 6/Saturday, shifting eastward into the
High Plains by Day 7/Sunday.
...Day 3/Wednesday: Central High Plains...
An area of 40 percent probability for Critical fire weather
conditions including northwest winds of 25 to 35 mph and daytime
relative humidity in the 15 to 20 percent range was introduced into
portions of southeastern Wyoming, northeastern Colorado and western
Nebraska. This is in response to accelerating northwest surface flow
from a strengthening mid-level jet translating over the Central
Rockies and dry fuels.
...Day 6/Saturday - Day 7/Sunday: Desert Southwest and High
Plains...
Upper-level ridging over the western U.S. will bring an extended
period of warm and above normal temperatures to the region aiding in
drying of fuels. An upper-level trough and associated induced
stronger surface wind field combined with a very dry air mass could
bring Elevated to Critical fire weather risks to portions of the
Desert Southwest and High Plains over the weekend (Day 6/Day 7).
However, some inter-model inconsistencies combined with expected sub
prime fuel dryness precludes introduction of Critical probabilities
at this time.
..Moore/Williams.. 04/07/2025