Spot Forecast
Issued by NWS Glasgow, MT

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FNUS75 KGGW 202106
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Spot Forecast for Coal Creek...BLM
National Weather Service Glasgow MT
306 PM MDT Wed Aug 20 2025

Forecast is based on forecast start time of 2100 MDT on August 19.
If conditions become unrepresentative...contact the National Weather
Service at (406) 228-9622.

...HEAT ADVISORY IN EFFECT UNTIL 8 PM MDT THIS EVENING...

.DISCUSSION...
Scattered thunderstorms will be moving east into northeast
Montana tonight, with the greatest chances between midnight and
daybreak Thursday morning. But most of these are expected to stay
north of the wildfire. Gusty and erratic winds and lightning with
little rainfall can be expected. Cooler temperatures with
northwest winds are expected Thursday.

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (75-85 percent). Slight chance of
                    showers and thunderstorms overnight.
CWR.................5 percent.
Chance of thunder...21 percent.
Min temperature.....Around 67.
Max humidity........67 percent.
Wind (20 ft)........Northwest winds 5 to 9 mph with gusts to around 16
                    mph shifting to the north 6 to 10 mph with gusts
                    to around 18 mph overnight. Gusty and erratic
                    winds expected near thunderstorms overnight.
Mixing height.......700 ft AGL.
Transport winds.....Northwest 10 to 12 mph shifting to the north 18 to 20
                    mph.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........27  40  73  82  84  90  83  77  67  50  43  57
Weather cov.....                        SCH         SCH SCH SCH
Weather type....                        RW          RW  RW  RW
Tstm cov........                        SCH         SCH SCH SCH
CWR.............0   0   0   0   0   0   10  10  10  10  10  10
Chc of thdr (%).0   0   0   10  10  10  20  10  10  20  20  20
Temp............101 97  91  86  83  80  77  75  75  73  70  69
RH..............19  23  30  37  42  45  50  53  54  56  58  62
20 FT wind dir..NW  NW  NW  NW  NW  NW  N   N   N   N   N   N
20 FT wind spd..9   8   7   7   6   5   6   6   7   8   8   10
20 FT wind gust.16  14  14  13  11  10  10  11  14  14  16  18
Mix hgt (kft)...6.1 1.8 0.8 0.7 0.7 0.8 0.8 0.7 0.7 0.7 0.7 0.7
Transp wind dir.W   NW  NW  NW  N   N   N   N   N   N   N   N
Transp wind spd.12  12  10  12  12  10  12  15  16  18  20  18

.THURSDAY...

Sky/weather.........Sunny (20-30 percent).
CWR.................4 percent.
Chance of thunder...14 percent.
Max temperature.....Around 86.
Min humidity........33 percent.
Wind (20 ft)........North winds 9 to 11 mph with gusts to around 18
                    mph.
Mixing height.......7000 ft AGL.
Transport winds.....North 13 to 18 mph.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........38  19  24  32  32  32  14  18  18  10  11  11
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).10  10  10  0   0   0   10  10  10  10  10  10
Temp............68  67  70  72  75  78  80  82  83  84  85  84
RH..............65  66  65  59  57  50  43  40  38  35  32  32
20 FT wind dir..N   N   N   N   N   N   N   N   N   N   N   N
20 FT wind spd..9   9   9   10  10  10  11  11  11  10  10  10
20 FT wind gust.16  16  16  17  17  17  18  18  18  16  16  16
Mix hgt (kft)...0.8 1.1 1.6 2.1 2.9 3.5 4.3 5.7 5.4 6.5 7.0 6.8
Transp wind dir.N   N   N   N   N   N   N   NW  N   N   N   N
Transp wind spd.18  17  17  18  17  16  16  16  14  16  13  13

$$
Forecaster...JAMBA
Requested by...Connor Adkins
Type of request...WILDFIRE
.TAG 2520281.0/GGW
.DELDT 08/19/25
.FormatterVersion 2.0.0
.EMAIL MTMCC@firenet.gov