ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 061649
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1149 AM CDT Sun Jul 06 2025
Valid 061700Z - 071200Z
...NO CRITICAL AREAS...
Locally elevated breezy and dry conditions are expected today across
the interior California mountains/Mojave desert as well as the Upper
Colorado River Basin. Otherwise, no significant, broad scale fire
weather concerns are expected across CONUS today.
..Williams.. 07/06/2025
.PREV DISCUSSION... /ISSUED 1255 AM CDT Sun Jul 06 2025/
...Synopsis...
A mid-level ridge will continue to build over the southern Rockies
during the day with a cutoff low west of California. Some weak flow
aloft may be mixed down to the surface during the afternoon over
portions of the Great Basin. However, overall surface flow is
expected to remain weak, and even in the presence of low RH, any
Elevated fire conditions should be localized and transient.
Therefore, no highlights have been added at this time.
U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 061948
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0248 PM CDT Sun Jul 06 2025
Valid 071200Z - 081200Z
...Far Northern California and Southern Oregon...
Strengthening mid-level flow and associated weak ascent with a
closed low off the coast of Northern CA combined with daytime
boundary layer destabilization will provide for some isolated
convection across the higher terrain of northern CA into
south-central OR along and near the Cascades. Drier, more receptive
fuels exist across far northwestern CA where recent precipitation
was limited. In addition, gusty outflow winds from thunderstorms
could impact ongoing fires across northern CA as well promoting new
fire starts with limited precipitation expected. Isolated dry
thunderstorm highlights were introduced to cover this threat.
..Williams.. 07/06/2025
.PREV DISCUSSION... /ISSUED 1255 AM CDT Sun Jul 06 2025/
...Synopsis...
A mid-level ridge should remain in place over the southern Rockies
through the day on Monday with a cutoff low off the California
coast. The height gradient between these two features is expected to
strengthen throughout the day, which may allow for a corridor of
stronger surface flow (15-20 mph) with 5-10% RH across portions of
southern Nevada. However, confidence in the overlap of this stronger
surface flow with receptive fuels is not high. Therefore, will hold
off on introducing Elevated highlights at this time.
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 062159
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0459 PM CDT Sun Jul 06 2025
Valid 081200Z - 141200Z
...Day 3/Tuesday...
A cut off low off in the northeast Pacific will begin to push
northeastward into northern CA on Day 3/Tuesday, aided by an
additional mid-level trough pushing into the Pacific Northwest.
Enhanced downslope winds in conjunction with increasing mid-level
flow and gap winds through the Columbia River Gorge will bring a
fire weather threat to much of the Columbia River Basin Tuesday.
Farther south, isolated dry thunderstorms with minimal rainfall will
bring a threat of new fire starts over receptive fuels across
central OR. Dry and breezy conditions will elevate fire weather
concerns across southern NV and far western UT as well.
...Day 4/Wednesday...
The northern CA low will advance into the Great Basin region
Wednesday. A corridor of enhanced mid-level winds and daytime mixing
within a deep/dry boundary layer will support breezy conditions
across much of NV and portions of western UT elevating wildfire
spread potential within dry fuels.
...Days 5-8/Thursday-Sunday...
A mid-level ridge will build over the Southwestern U.S. for the
latter part of the week reintroducing above normal temperatures to
much of the West by the weekend (Days 7-8/Saturday-Sunday).
Thunderstorm threat will largely be confined to southern Arizona and
along and east of the Continental Divide as the ridge builds across
the region.
..Williams.. 07/06/2025