323
FNUS75 KGJT 132227
FWSGJT
SPOT FORECAST FOR RAT MOUNTAIN...GRAND JUNCTION INTERAGENCY DISPATCH
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
427 PM MDT THU AUG 13 2026
FORECAST IS BASED ON FORECAST START TIME OF 1800 MDT ON AUGUST 13.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
MOISTURE WILL CONTINUE TO INCREASE WITH SOUTHERLY
FLOW IN PLACE THROUGH THE END OF THE WEEK WITH SHOWERS AND STORMS
DEVELOPING ACROSS THE REGION. INCREASED CLOUD COVER WILL HELP KEEP
HUMIDITIES UP AND TEMPERATURES DOWN. GUSTY ERRATIC WINDS 30-40 MPH
ARE POSSIBLE NEAR ANY STORM ACTIVITY ALONG WITH BRIEF HEAVY RAIN
AND SMALL HAIL. HEAVY RAINFALL COULD CREATE LOCALIZED FLASH
FLOODING AND DEBRIS FLOW CONCERNS. DRIER CONDITIONS RETURN SUNDAY
INTO EARLY NEXT WEEK, BUT PRECIPITATION IS STILL POSSIBLE.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING
PARTLY CLOUDY (45-55 PERCENT). RAIN SHOWERS
LIKELY AND CHANCE OF THUNDERSTORMS IN THE
EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS
OVERNIGHT.
CWR.................40 PERCENT.
MIN TEMPERATURE.....49-54.
MAX HUMIDITY........71-76 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 8 TO 12 MPH WITH GUSTS TO 20
MPH IN THE EARLY EVENING, SHIFTING TO THE SOUTH
5 MPH OVERNIGHT. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS IN THE EVENING.
SMOKE DISPERSAL.....POOR (4000-30000 KNOT-FT).
MIXING HEIGHT.......2800 FT AGL DECREASING TO 600 FT AGL OVERNIGHT.
TRANSPORT WINDS.....SOUTHWEST 10 MPH.
CHANCE OF THUNDER...35 PERCENT.
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING. CHANCE OF RAIN
SHOWERS THROUGH THE DAY. CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
CWR.................40 PERCENT.
MAX TEMPERATURE.....66-71.
MIN HUMIDITY........39-44 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 MPH UNTIL 1000, SHIFTING TO THE
WEST 8 TO 12 MPH WITH GUSTS TO 20 MPH IN THE
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS.
SMOKE DISPERSAL.....FAIR INCREASING TO GOOD IN THE AFTERNOON.
MIXING HEIGHT.......INCREASING TO 5000 FT AGL BY PEAK HEATING IN
THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 14 MPH.
CHANCE OF THUNDER...50 PERCENT.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (40-50 PERCENT). CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN
SLIGHT CHANCE OF RAIN SHOWERS OVERNIGHT.
CWR.................30 PERCENT.
MIN TEMPERATURE.....48-53.
MAX HUMIDITY........71-76 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 8 TO 12 MPH IN THE EARLY
EVENING, SHIFTING TO THE SOUTHEAST 5 MPH
OVERNIGHT. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS IN THE EVENING.
SMOKE DISPERSAL.....POOR (4000-23000 KNOT-FT).
MIXING HEIGHT.......2500 FT AGL DECREASING TO 600 FT AGL OVERNIGHT.
TRANSPORT WINDS.....SOUTH 10 MPH.
CHANCE OF THUNDER...30 PERCENT.
SATURDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING. RAIN SHOWERS
LIKELY THROUGH THE DAY. CHANCE OF THUNDERSTORMS
IN THE AFTERNOON.
CWR.................30 PERCENT.
MAX TEMPERATURE.....65-70.
MIN HUMIDITY........36-41 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 MPH UNTIL 1000, SHIFTING TO THE
WEST 8 TO 12 MPH IN THE AFTERNOON. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
SMOKE DISPERSAL.....FAIR INCREASING TO GOOD IN THE AFTERNOON.
MIXING HEIGHT.......INCREASING TO 5800 FT AGL BY PEAK HEATING IN THE
MID AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 12 MPH.
CLEARING INDEX......790 INCREASING TO 1050 IN THE AFTERNOON.
CHANCE OF THUNDER...50 PERCENT.
FORECASTER...MATT ALEKSA
REQUESTED BY...GRAND JUNCTION INTERAGENCY DISPATCH
TYPE OF REQUEST...WILDFIRE
.TAG 2619342.7/GJT
.DELDT 08/13/26
.FORMATTERVERSION 2.0.0
.EMAIL MICHAEL.DAVIDSON@USDA.GOV,ETHANESUNDER4@GMAIL.COM,COGJC@FIRENET.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page