307
FNUS75 KMSO 192334
FWSMSO
SPOT FORECAST FOR LOWER OROGRANDE UNITS 5 & 12
NATIONAL WEATHER SERVICE MISSOULA MT
534 PM MDT TUE OCT 19 2021
FORECAST IS BASED ON IGNITION TIME OF 1800 PDT ON OCTOBER 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A SHORTWAVE MOVING ACROSS THE REGION TOMORROW WILL
BRING THE CHANCE FOR SOME RAIN ON THE BURN SITE IN THE AFTERNOON.
GETTING HUMIDITY LOW ENOUGH WILL BE A CHALLENGE THE NEXT FEW DAYS
WITH THE INCREASED CLOUD COVER AND RAIN SHOWERS. A STRONGER
TROUGH AND COLD FRONT THIS WEEKEND WILL BRING ABOUT AN 80 PERCENT
CHANCE OF A WETTING RAIN BEFORE MONDAY.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CWR (> 0.10 INCH)...0 PERCENT.
* MIN TEMPERATURE.....38-43.
* MAX HUMIDITY........64-69 PERCENT.
* WIND (20 FT)........EAST AROUND 5 MPH.
* MIXING HEIGHT.......5000 FT AGL DECREASING TO LESS THAN 100 FT
AGL OVERNIGHT.
* MIXING WINDS........SOUTHEAST 10 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
WEDNESDAY
* SKY/WEATHER.........MOSTLY CLOUDY. RAIN LIKELY IN THE AFTERNOON.
* CWR (> 0.10 INCH)...30 PERCENT.
* MAX TEMPERATURE.....54-59.
* MIN HUMIDITY........48-53 PERCENT.
* WIND (20 FT)........SOUTHEAST 5-6 MPH SHIFTING TO THE SOUTHWEST
6-8 MPH IN THE AFTERNOON.
* MIXING HEIGHT.......LESS THAN 100 FT AGL INCREASING TO 2000 FT
AGL IN THE AFTERNOON.
* MIXING WINDS........SOUTH 10 MPH.
* PRECIP AMOUNT.......0.07 INCHES.
WEDNESDAY NIGHT
* SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
* CWR (> 0.10 INCH)...10 PERCENT.
* MIN TEMPERATURE.....35-40.
* MAX HUMIDITY........88-93 PERCENT.
* WIND (20 FT)........VARIABLE 1-3 MPH.
* MIXING HEIGHT.......2000 FT AGL DECREASING TO 500 FT AGL
OVERNIGHT.
* MIXING WINDS........SOUTH 5 MPH.
* PRECIP AMOUNT.......0.03 INCHES.
THURSDAY
* SKY/WEATHER.........PARTLY CLOUDY.
* CWR (> 0.10 INCH)...0 PERCENT.
* MAX TEMPERATURE.....57-62.
* MIN HUMIDITY........48-53 PERCENT.
* WIND (20 FT)........VARIABLE 2-4 MPH BECOMING SOUTH 5-6 MPH IN
THE AFTERNOON.
* MIXING HEIGHT.......500 FT AGL INCREASING TO 5000 FT AGL IN THE
AFTERNOON.
* MIXING WINDS........SOUTH 5 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
FORECASTER...LEACH
REQUESTED BY...THEODORE PETERSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2119422.2/MSO
.DELDT 10/19/21
.FORMATTERVERSION 2.0.0
.EMAIL THEODORE.PETERSON@USDA.GOV
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