ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 071651
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1151 AM CDT Sat Jun 07 2025
Valid 071700Z - 081200Z
The current forecast for elevated fire weather conditions across
portions of northeastern Montana and far northwest North Dakota is
on track, with no changes needed. As of 1630 UTC, surface
observations indicate gusty post-frontal surface winds ongoing
across much of the area, with sustained winds of 15-20 mph. Elevated
fire weather conditions are possible for a few hours this afternoon
as minimum RH values fall to 20-25% amidst at least marginally
receptive fuels and continued breeziness. Please see the previous
discussion below for more information on today's fire weather
forecast.
..Elliott.. 06/07/2025
.PREV DISCUSSION... /ISSUED 0154 AM CDT Sat Jun 07 2025/
...Synopsis...
Broad upper troughing will overspread the north-central to eastern
CONUS today, supporting the northward return of low-level moisture,
as well as scattered to widespread showers and thunderstorms to much
of the U.S. east of the Rockies. As such, wildfire spread concerns
should be limited for much of the central and eastern CONUS. While
overall dry conditions will prevail across portions of the Southwest
into the Great Basin, overall fuel receptiveness and strength of the
surface wind fields appear too marginal for fire weather highlights.
One area for some wildfire-spread potential is northeast Montana.
Here, a surface cold front will sweep across the region, with
widespread 25+ mph sustained northwesterly surface winds likely
during the afternoon. Since RH may dip to 20 percent with the
aforementioned strong surface wind field, and given ERCs approaching
the 80th percentile in spots, Elevated highlights have been
introduced for far northeastern Montana.
U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 071851
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0151 PM CDT Sat Jun 07 2025
Valid 081200Z - 091200Z
The latest high-resolution ensemble guidance continues to suggest
widespread breezy post-frontal northwesterly surface winds across
the northern High Plains tomorrow (Day 2/Sunday), with sustained
surface winds of 20-25 mph and gusts of 30-40 mph. Ensemble guidance
has also trended a bit drier in the low-levels, with minimum RH
values now forecast between 20-25% across portions of central into
northeastern Montana. Several hours of elevated to locally critical
fire weather conditions are likely tomorrow afternoon where fuels
are at least marginally receptive. While locally elevated fire
weather conditions may extend further southeastward, fuels generally
remain less receptive due to recent rainfall over the past week.
..Elliott.. 06/07/2025
.PREV DISCUSSION... /ISSUED 0205 AM CDT Sat Jun 07 2025/
...Synopsis...
A mid-level trough will deepen across the Great Lakes/Ohio Valley
region, promoting widespread showers/thunderstorms and/or the
overspreading of rich low-level moisture across much of the Plains
to the East Coast tomorrow (Sunday). As such, significant and
widespread wildfire-spread conditions should be limited across most
locales east of the Rockies. Similar to Day 1, dry conditions will
prevail across the Southwest tomorrow, though surface winds appear
too weak to warrant fire weather highlights. Widespread 20-25 mph
sustained northwesterly surface winds amid 25 percent RH are likely
in a post cold-frontal regime over the northern High Plains tomorrow
(Sunday) afternoon. However, fuels in this region are less
receptive, and have received relatively more recent rainfall
compared to far northeast Montana. As such, fire weather highlights
have been withheld for now.
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 072051
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0351 PM CDT Sat Jun 07 2025
Valid 091200Z - 151200Z
Subtropical ridging over the western U.S. is forecast to briefly
intensify Day 3/Monday into Day 4/Tuesday before it begins to break
down later Day 4/Tuesday as mid-level troughing re-develops across
the West and persists into next weekend.
...Northwest: Day 4/Tuesday - Day 5/Wednesday...
Dry and breezy conditions are expected to develop along/east of the
Cascades Day 4/Tuesday and Day 5/Wednesday across portions of
Washington and Oregon. While elevated to locally critical fire
weather conditions are possible, probabilities for Critical
conditions currently remains less than 40% due to continued
run-to-run ensemble model variability.
...Great Basin into the Southwest: Day 5/Wednesday - Day
8/Saturday...
Dry and windy conditions are forecast to develop over the western
U.S. by mid-week as the aforementioned western U.S. trough impinges
on the area. While some increase in fire weather conditions is
expected from mid-week into next weekend, especially considering
several preceding days of dry/windy conditions, uncertainty
currently remains a bit too large to introduce probabilities for
Critical fire weather conditions. At this time, ensemble guidance
suggests elevated to locally critical conditions are most likely
across portions of Utah and Nevada.
...Dry Thunderstorms: Northwest into the northern Great Basin and
northern Rockies...
Thunderstorm potential will increase across the Northwest Day
3/Monday before shifting into the Great Basin and northern Rockies
Day 4/Tuesday through much of the extended period. While dry
thunderstorms will be possible, uncertainty on coverage, mode (wet
vs dry), and fuel receptiveness precludes introducing an area at
this time.
..Elliott.. 06/07/2025