663
FNUS75 KSLC 220115
FWSSLC
SPOT FORECAST FOR BONNEVILLE FIRE...USFS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
715 PM MDT SUN JUN 21 2026
FORECAST IS BASED ON FORECAST START TIME OF 1900 MDT ON JUNE 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
WINDS WILL CONTINUE TO BE NORTHWEST OVER THE LOWER
ELEVATIONS AND UP VALLEY AT THE BOTTOM OF DRAINAGES THROUGH THE
EVENING. GUIDANCE HAS CONTINUED TO SHIFT TOWARD A LOWER THREAT OF
ANY HIGH-BASED SHOWERS MOVING ACROSS THE FIRE, WITH THE CHANCE OF
ANY VIRGA AROUND 10% BETWEEN 2100-0100 TONIGHT. BRIEFLY ERRATIC
WINDS MAY OCCUR NEAR THESE HIGH-BASED SHOWERS. HUMIDITY RECOVERY
WILL BE POOR TONIGHT, AROUND 30-32 PERCENT.
FOR MONDAY, SMOKE ALOFT WILL BEGIN TO INCREASE AS HIGH PRESSURE
BRINGS A WARMING AND DRYING TREND. WINDS WILL TO START THE DAY
LARGELY TERRAIN DRIVEN AND THEN SHIFT FROM SOUTH TO NORTHWEST LATE
MORNING INTO EARLY AFTERNOON. RECOVERIES OVERNIGHT MONDAY NIGHT
WILL CONTINUE TO TREND MORE POOR, AROUND 27-29 PERCENT.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT CLOUD COVER).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....64-66.
MAX HUMIDITY........30-32 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5-10 MPH BECOMING EAST TO
NORTHEAST 3-7 MPH AFTER 2100.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST AROUND 12 MPH BECOMING EAST AROUND 9 MPH
OVERNIGHT.
MONDAY
SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT CLOUD COVER).
SMOKE ALOFT.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....91-93.
MIN HUMIDITY........15-17 PERCENT.
WIND (20 FT)........EAST TO NORTHEAST WINDS 3-7 MPH BECOMING
SOUTHWEST 5-10 MPH AROUND 0900, THEN SHIFTING
TO NORTHWEST BETWEEN 1300-1400.
MIXING HEIGHT.......10600 FT AGL (70-80TH PERCENTILE).
TRANSPORT WINDS.....SOUTHWEST 12 TO 15 MPH.
MONDAY NIGHT
SKY/WEATHER.........CLEAR (0-10 PERCENT CLOUD COVER). SMOKE ALOFT.
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....65-67.
MAX HUMIDITY........27-29 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5-10 MPH BECOMING EAST TO
NORTHEAST 2-6 MPH 2000-2100.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 14 MPH BECOMING EAST
OVERNIGHT.
FORECASTER...KRUSE
REQUESTED BY...FLINDERS
TYPE OF REQUEST...WILDFIRE
.TAG 2615944.0/SLC
.DELDT 06/21/26
.FORMATTERVERSION 2.0.0
.EMAIL SARAH.FLINDERS@USDA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page