388
FNUS75 KTFX 181819
FWSTFX

Spot Forecast for Jericho Mountain WF...USFS
National Weather Service Great Falls MT
1219 PM MDT Wed Jun 18 2025

Forecast is based on forecast start time of 0600 MDT on June 19.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

It will be warm tomorrow with dry weather in the morning.
Tomorrow afternoon through the early evening hours scattered rain
showers and thunderstorms will be around the fire. Friday morning
scattered rain showers will return to the area. Friday afternoon
rain showers and isolated thunderstorms will affect the fire. Any
thunderstorms will bring lightning and gusty, erratic winds. There
is a 60% chance for a quarter inch of rain and a 40% chance for a
half inch of rain on Friday over the fire.

.JUNETEENTH...

Sky/weather.........Sunny (15-25 percent) then becoming partly
                    sunny (55-65 percent). Chance of rain showers
                    in the afternoon.
CWR.................5 percent.
Chance of thunder...26 percent.
Max temperature.....68-73.
Min humidity........27-32 percent.
Wind (20 ft)........
 Slope/valley.......West winds around 5 mph shifting to the
                    northeast late in the afternoon.
 Ridgetop...........Southwest 10 to 15 mph shifting to the north
                    late in the afternoon.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........16  14  12  10  18  26  51  51  51  51  57  69
Weather cov.....                        CHC CHC CHC CHC CHC CHC
Weather type....                        RW  RW  RW  RW  RW  RW
Tstm cov........
CWR.............0   0   0   0   0   0   10  10  10  10  10  10
Chc of thdr (%).0   0   0   0   0   0   30  30  30  30  30  30
Temp............44  47  49  52  57  61  65  66  68  70  69  68
RH..............62  60  55  52  43  40  36  36  33  32  34  37
20 FT wind dir..W   W   W   W   W   NW  NW  NW  NW  N   N   NE
20 FT wind spd..5   5   5   5   5   5   10  10  10  10  10  10
20 FT wind gust.10  10  10  10  10  15  15  15  15  15  15  15
Ridge wind dir..SW  SW  SW  SW  SW  SW  SW  SW  W   W   W   N
Ridge wind spd..10  10  10  10  15  15  15  15  15  15  15  10

.THURSDAY NIGHT...

Sky/weather.........Mostly cloudy (70-80 percent). Chance of
                    thunderstorms in the evening. Chance of rain
                    showers through the night. Slight chance of
                    thunderstorms overnight.
CWR.................45 percent decreasing to 15 percent overnight.
Chance of thunder...31 percent.
Min temperature.....46-51.
Max humidity........85-90 percent.
Wind (20 ft)........
 Slope/valley.......East winds around 10 mph shifting to the
                    northeast early in the evening, then shifting
                    to the southeast late in the evening shifting
                    to the south overnight. Gusty and erratic winds
                    expected near thunderstorms in the evening.
                    Gusty and erratic winds expected near
                    thunderstorms overnight.
 Ridgetop...........North 10 to 15 mph shifting to the southeast
                    overnight.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........82  82  82  79  79  79  81  81  81  65  65  65
Weather cov.....CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........CHC CHC CHC CHC CHC CHC SCH SCH SCH SCH SCH SCH
CWR.............50  50  50  50  50  50  20  20  20  20  20  20
Chc of thdr (%).30  30  30  30  30  30  20  20  20  20  20  20
Temp............65  62  59  56  54  53  52  51  50  49  49  48
RH..............45  51  59  68  74  78  81  84  86  87  88  88
20 FT wind dir..E   E   NE  N   NE  SE  S   S   SW  SW  SW  S
20 FT wind spd..10  10  10  10  10  5   5   5   5   5   5   5
20 FT wind gust.15  15  15  15  15  15  10  10  10  10  10  10
Ridge wind dir..N   N   NE  NE  NE  E   SE  SE  SE  SE  SE  SE
Ridge wind spd..10  10  15  20  15  15  10  10  10  10  10  10

.FRIDAY...

Sky/weather.........Partly sunny (55-65 percent) then becoming
                    cloudy (85-95 percent). Chance of rain showers
                    in the morning, then rain showers and slight
                    chance of thunderstorms in the afternoon.
CWR.................20 percent increasing to 75 percent in the
                    afternoon.
Chance of thunder...46 percent.
Max temperature.....56-61.
Min humidity........61-66 percent.
Wind (20 ft)........
 Slope/valley.......South winds around 5 mph shifting to the
                    northeast late in the morning, then shifting to
                    the north early in the afternoon shifting to
                    the northwest late in the afternoon. Gusty and
                    erratic winds expected near thunderstorms in
                    the afternoon.
 Ridgetop...........South 5 to 10 mph shifting to the west late in
                    the morning, then increasing to northwest 10 to
                    15 mph late in the afternoon.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........62  62  62  56  56  56  90  90  90  90  90  90
Weather cov.....CHC CHC CHC CHC CHC CHC DEF DEF DEF DEF DEF DEF
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........                        SCH SCH SCH SCH SCH SCH
CWR.............20  20  20  20  20  20  80  80  80  80  80  80
Chc of thdr (%).20  20  20  20  20  20  50  50  50  50  50  50
Temp............48  49  50  52  53  55  56  56  57  56  55  53
RH..............88  87  84  81  75  69  66  68  72  78  83  87
20 FT wind dir..S   S   S   NE  NE  NE  N   N   N   NW  NW  NW
20 FT wind spd..5   5   5   10  10  10  10  10  10  10  10  10
20 FT wind gust.10  10  10  15  15  15  15  15  15  20  20  20
Ridge wind dir..SE  SE  S   S   S   W   W   W   W   W   W   NW
Ridge wind spd..10  10  5   5   5   0   0   5   5   10  15  15

$$
Forecaster...Gesell
Requested by...Kory Garrie
Type of request...WILDFIRE
.TAG 2516188.0/TFX
.DELDT 06/18/25
.FormatterVersion 2.0.0
.EMAIL kory_garrie@firenet.gov,tfx.ops@noaa.gov