481
FNUS75 KMSO 211603
FWSMSO
SPOT FORECAST FOR ALDER DITCH
NATIONAL WEATHER SERVICE MISSOULA MT
1003 AM MDT TUE APR 21 2026
FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
ONE MORE DAY OF HOT AND DRY CONDITIONS ARE EXPECTED
TODAY. CONFIDENCE IS HIGH MINRH VALUES WILL RUN IN THE LOW 20S
AGAIN TODAY. RH VALUES ARE LIKELY TO DROP TO NEAR 20 PERCENT
BETWEEN 1500 AND 1900 LOCAL. THERE WILL BE AN INCREASE IN HIGH-
LEVEL CLOUDS THIS AFTERNOON. THERE IS A LOW CHANCE (<20%) FOR
ISOLATED SHOWERS OR THUNDERSTORMS LATE THIS AFTERNOON OR EVENING
AFTER AROUND 1700, BUT NO WETTING RAIN IS EXPECTED. WIDESPREAD
SHOWERS ARRIVE BY LATE WEDNESDAY MORNING WITH 24-HOUR
PRECIPITATION TOTALS ENDING THURSDAY MORNING RANGING BETWEEN 0.24"
AND 0.65".
REST OF TODAY
* SKY/WEATHER.........MOSTLY SUNNY.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....0 PERCENT.
* MAX TEMPERATURE.....69-74.
* MIN HUMIDITY........17-22 PERCENT.
* WIND (20 FT)........VARIABLE 2-4 MPH BECOMING SOUTHEAST 5-9 MPH
IN THE AFTERNOON.
* MIXING HEIGHT.......3500 FT AGL INCREASING TO 6000 FT AGL LATE IN
THE AFTERNOON.
* MIXING WINDS........SOUTHEAST 10 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
TONIGHT
* SKY/WEATHER.........PARTLY CLOUDY.
* CWR (> 0.10 INCH)...0 PERCENT.
* CHANCE LIGHTNING....UP TO 10 PERCENT.
* MIN TEMPERATURE.....45-50.
* MAX HUMIDITY........61-66 PERCENT.
* WIND (20 FT)........WEST 5-6 MPH.
* MIXING HEIGHT.......5500 FT AGL DECREASING TO LESS THAN 100 FT
AGL.
* MIXING WINDS........NORTH 10 MPH.
* PRECIP AMOUNT.......0.00 INCHES.
WEDNESDAY
* SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN IN THE
MORNING, THEN RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
* CWR (> 0.10 INCH)...80 PERCENT.
* MAX TEMPERATURE.....52-57.
* MIN HUMIDITY........61-66 PERCENT.
* WIND (20 FT)........SOUTHWEST 6-12 MPH. GUSTS AROUND 25 MPH IN
THE AFTERNOON.
* MIXING HEIGHT.......2500 FT AGL.
* MIXING WINDS........WEST 15 MPH.
* PRECIP AMOUNT.......0.18-0.56 INCHES.
FORECASTER...KITSMILLER
REQUESTED BY...ART TRAHAN
TYPE OF REQUEST...PRESCRIBED
.TAG 2610950.0/MSO
.DELDT 04/21/26
.FORMATTERVERSION 2.0.0
.EMAIL NICK.MAYS@CSKT.ORG
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