589
FNUS75 KTFX 051301
FWSTFX

Spot Forecast for BLR Unit 5...U.S. FWS
National Weather Service Great Falls MT
701 AM MDT Sat Apr 5 2025

Forecast is based on ignition time of 1100 MDT on April 05.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

An upper level ridge of high pressure settles across Northern
Rockies and Montana this weekend for dry and seasonal conditions
with temperatures warming above average on Sunday. Cloud-cover
will be minimal with just some passing high clouds. Southwest
winds persist with a few afternoon gusts as high as around 20 mph
during peak mixing to around 6000 feet.

.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....54-59.
Min humidity........24-29 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 10 to 15 mph with a few afternoon
                    gusts to around 20 mph.
Mixing height.......5000 ft AGL.
Transport winds.....West around 15 mph.

TIME (MDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........3   3   4   4   5   8   5
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0
Temp............43  47  50  52  54  55  55
RH..............43  37  31  29  29  29  30
20 FT wind dir..SW  SW  SW  SW  SW  SW  W
20 FT wind spd..15  15  15  15  15  10  10
20 FT wind gust.20  25  20  20  20  15  15
Mix hgt (kft)...2.0 2.5 3.5 4.5 4.5 5.0 5.0
Transp wind dir.SW  W   W   W   W   W   W
Transp wind spd.15  15  15  15  15  15  15

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Min temperature.....27-32.
Max humidity........67-72 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds around 10 mph.
Mixing height.......500 ft AGL.
Transport winds.....West 10 to 15 mph.

TIME (MDT)      6 PM         10 PM        2 AM
Sky (%).........6            18           21
Weather cov.....
Weather type....NONE         NONE         NONE
Tstm cov........
CWR.............0            0            0
Chc of thdr (%).0            0            0
Temp............56           39           33
RH..............30           59           66
20 FT wind......W 10G15      W 10         SW 10
Mix hgt (ft)....4500         500          500
Transport wind..W 15         W 15         W 15

.SUNDAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....61-66.
Min humidity........22-27 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 5 to 10 mph.
Mixing height.......5000 ft AGL.
Transport winds.....Southwest 10 to 15 mph.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........14  10  11  10  7   8   9   9   9   7   7   7
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............30  31  33  37  45  50  55  58  60  60  62  63
RH..............72  71  66  59  49  42  35  30  28  27  25  25
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..10  10  10  10  10  10  10  10  10  5   5   5
20 FT wind gust.15  15  15  15  15  15  15  15  15  15  15  15
Mix hgt (kft)...0.5 0.5 0.5 0.5 1.0 1.5 2.5 3.0 4.0 4.5 5.0 5.0
Transp wind dir.W   W   SW  W   W   W   W   W   SW  SW  SW  SW
Transp wind spd.15  15  15  15  15  10  10  10  10  10  10  10

$$
Forecaster...Hoenisch
Requested by...Jim Forsythe
Type of request...PRESCRIBED
.TAG 2508927.0/TFX
.DELDT 04/05/25
.FormatterVersion 2.0.0
.EMAIL James_Forsythe@fws.gov