828
FNUS75 KSLC 302146
FWSSLC
SPOT FORECAST FOR COTTONWOOD FIRE...USFS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
346 PM MDT THU JUL 30 2026
FORECAST IS BASED ON FORECAST START TIME OF 0900 MDT ON JULY 31.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
CONDITIONS WILL BECOME INCREASINGLY HOT AND DRY
THROUGH THE WEEKEND, WITH LITTLE TO NO OVERNIGHT HUMIDITY RECOVERY
AND SINGLE DIGIT MINIMUM HUMIDITY LIKELY. WINDS WILL LARGELY
REMAIN TERRAIN-DRIVEN THROUGH SATURDAY NIGHT, INCREASING OUT OF
THE SOUTHWEST ON SUNDAY WHICH WILL RESULT IN NEAR-CRITICAL FIRE
WEATHER CONDITIONS. WHILE A FEW ISOLATED THUNDERSTORMS MAY
DEVELOP OVER HIGHER TERRAIN ON FRIDAY AND SATURDAY AFTERNOONS,
THIS CHANCE IS VERY LOW AND SHOWERS WOULD BE SHORT-LIVED. THERE IS
LITTLE TO NO FLASH FLOOD THREAT THROUGH AT LEAST TUESDAY AS ANY
SHOWERS THAT DEVELOP WILL BE HIGH-BASED.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER).
CWR.................0 PERCENT.
CHANCE OF PCPN......5 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....74-77.
MIN HUMIDITY........13-16 PERCENT.
WIND (20 FT)........DOWNVALLEY WINDS 3 TO 6 MPH BECOMING WEST WINDS
5 TO 9 MPH.
MIXING HEIGHT.......10000 FT AGL (80-90TH PERCENTILE).
TRANSPORT WINDS.....SOUTHWEST 6 TO 8 MPH.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT CLOUD COVER).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....53-56.
MAX HUMIDITY........18-21 PERCENT.
WIND (20 FT)........WEST WINDS 4 TO 8 MPH BECOMING DOWNVALLEY 3 TO 6
MPH AFTER 2400.
MIXING HEIGHT.......600 FT AGL.
TRANSPORT WINDS.....WEST 6 TO 7 MPH.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT CLOUD COVER).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....75-78.
MIN HUMIDITY........11-14 PERCENT.
WIND (20 FT)........DOWNVALLEY WINDS 3 TO 6 MPH BECOMING SOUTHWEST
6 TO 10 MPH AFTER 1000.
MIXING HEIGHT.......1500 FT AGL INCREASING TO 12600 FT AGL IN THE
AFTERNOON (95-97TH PERCENTILE).
TRANSPORT WINDS.....SOUTHWEST AROUND 6 MPH BECOMING WEST AROUND 8
MPH IN THE AFTERNOON.
SATURDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT CLOUD COVER).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....54-57.
MAX HUMIDITY........15-18 PERCENT.
WIND (20 FT)........WEST WIND 3 TO 6 MPH BECOMING DOWNVALLEY 3 TO 6
MPH AFTER 2200.
MIXING HEIGHT.......590 FT AGL.
TRANSPORT WINDS.....WEST 6 TO 8 MPH.
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT CLOUD COVER).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....75-78.
MIN HUMIDITY........11-14 PERCENT.
WIND (20 FT)........DOWNVALLEY 3 TO 6 MPH BECOMING SOUTHWEST 8 TO 12
MPH WITH GUSTS TO 20 MPH AFTER 0900.
MIXING HEIGHT.......12800 FT AGL (95-97TH PERCENTILE)
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
FORECASTER...CUNNINGHAM
REQUESTED BY...BRIAN WATTS -PSCC
TYPE OF REQUEST...WILDFIRE
.TAG 2618674.0/SLC
.DELDT 07/30/26
.FORMATTERVERSION 2.0.0
.EMAIL BRIAN_WATTS@FIRENET.GOV,2026.COTTONWOOD.PLANS@FIRENET.GOV
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