Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pocatello, ID
Issued by NWS Pocatello, ID
572
FNUS55 KPIH 181028
FWFPIH
Fire Weather Planning Forecast for Southeast Idaho
National Weather Service Pocatello ID
428 AM MDT Sat Oct 18 2025
.DISCUSSION...
* Central Idaho Dispatch Area weather impact summary (Zones 475
and 476)...
After dry and mostly clear/sunny conditions today with drier
afternoon humidity values, our next fast-moving storm system
will bring rain and snow showers across the region from Sunday
morning through Monday morning. Winds with this system continue
to trend slightly stronger for Sunday afternoon and Sunday
night gusting 25 to 35 MPH. Meanwhile, precipitation amounts
instead of continuing to trend drier have increased just a bit,
with wetting rain/snow looking especially likely across Zone
475 (0.30 to 0.50 inches, some of that falling as 2-5 inches of
snow just above valley floors). Dry weather returns from Monday
afternoon through much of the rest of the coming week behind this
system.
* East Idaho Dispatch Area weather impact summary (Zones 410...411
and 413)...
After dry and mostly clear/sunny conditions today with drier
afternoon humidity values, our next fast-moving storm system
will bring rain and snow showers across the region from Sunday
afternoon through Monday morning. Winds with this system continue
to trend slightly stronger for Sunday afternoon and Sunday night,
with many areas seeing gusts of 25 to 35 MPH (40 MPH over the
Arco Desert region). Meanwhile, precipitation amounts instead of
continuing to trend drier have increased just a bit, with wetting
rain/snow looking especially likely along the immediate WY border
corridor from Caribou County north into the Island Park region.
Dry weather returns from Monday afternoon through much of the rest
of the coming week behind this system.
* South Central Idaho Dispatch Area weather impact summary (Zones
422...425 and 427)...
After dry and mostly clear/sunny conditions today with drier
afternoon humidity values, our next fast-moving storm system
will bring rain and snow showers across the region from late Sunday
morning through late Sunday night. Winds with this system
continue to trend slightly stronger for Sunday afternoon and
Sunday night gusting 25 to 35 MPH. Meanwhile, precipitation
amounts instead of continuing to trend drier have increased just a
bit, with wetting rain/snow looking especially likely across
northern Zone 422 (0.20 to 0.40 inches, vs. 0.10 inches or less
across Zones 425 and 427). Dry weather returns from Monday
afternoon through much of the rest of the coming week behind this
system.
IDZ475-191100-
East Salmon River Mountains/Salmon NF-
428 AM MDT Sat Oct 18 2025
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....48-55 valleys and 41-48 ridges.
24 hr trend......Little change.
* Min Humidity.......24-32 percent.
24 hr trend......10 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southwest 4 to 7 mph.
Ridges/upr slopes....Southwest 4 to 8 mph. Gusts up to 15 mph
in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......5250-6250 ft AGL.
* Transport Winds....Light winds becoming west around 10 mph in the
afternoon.
.TONIGHT...
* Sky/weather........Partly cloudy.
* Chc of thunder.....0 percent.
* Min Temperature....32-39.
24 hr trend......8 degrees up.
* Max Humidity.......82-90 percent valleys and 89-97 percent
ridges.
24 hr trend......10 percent up.
* 20ft winds.........
Valleys/lwr slopes...Southwest 9 to 14 mph.
Ridges/upr slopes....Southwest 10 to 15 mph with gusts to
around 25 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......0-1000 ft AGL.
* Transport Winds....Southwest 10 to 15 mph.
.SUNDAY...
* Sky/weather........Cloudy. Snow in the morning. Rain showers
through the day. Snow showers in the
afternoon.
* Chc of thunder.....0 percent.
* Max Temperature....42-49 valleys and 36-41 ridges.
24 hr trend......7 degrees down.
* Min Humidity.......62-70 percent valleys and 71-79 percent
ridges.
24 hr trend......42 percent up.
* 20ft winds.........
Valleys/lwr slopes...Southwest 10 to 15 mph.
Ridges/upr slopes....Southwest 10 to 15 mph with gusts to
around 30 mph.
* Chc Wetting Rain...90 percent.
* Mixing Height......5500-6500 ft AGL.
* Transport Winds....Southwest 20 to 25 mph.
.Forecast days 3 through 7......
.MONDAY...Partly cloudy. Chance of snow. Lows 23 to 30. Highs
38 to 45. West winds 10 to 20 mph with gusts to around 30 mph.
.TUESDAY...Clear. Lows 23 to 30. Highs 46 to 53. Southwest winds
5 to 10 mph with gusts to around 15 mph.
.WEDNESDAY...Partly cloudy. Lows 27 to 34. Highs 48 to 55.
Southwest winds 5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Partly cloudy. Lows in the mid 30s. Highs around 50.
.FRIDAY...Partly cloudy with slight chance of showers. Lows in
the upper 30s. Highs in the lower 50s.
$$
IDZ476-191100-
Lemhi and Lost River Range/Challis NF-
428 AM MDT Sat Oct 18 2025
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....48-55 valleys and 39-46 ridges.
24 hr trend......3 degrees down.
* Min Humidity.......29-37 percent valleys and 34-42 percent
ridges.
24 hr trend......7 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northwest 4 to 6 mph shifting to the south
in the afternoon.
Ridges/upr slopes....West 4 to 8 mph with gusts to around 15
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......4500-5500 ft AGL.
* Transport Winds....Light winds becoming west around 10 mph in the
afternoon.
.TONIGHT...
* Sky/weather........Partly cloudy.
* Chc of thunder.....0 percent.
* Min Temperature....30-37.
24 hr trend......8 degrees up.
* Max Humidity.......70-78 percent.
24 hr trend......4 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 9 to 14 mph.
Ridges/upr slopes....South 10 to 15 mph. Gusts up to 25 mph
after midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......0-1000 ft AGL.
* Transport Winds....Southwest 10 to 15 mph.
.SUNDAY...
* Sky/weather........Mostly cloudy. Rain likely and chance of snow
showers in the morning, then rain showers and
snow showers in the afternoon.
* Chc of thunder.....0 percent.
* Max Temperature....47-54 valleys and 38-45 ridges.
24 hr trend......Little change.
* Min Humidity.......55-63 percent valleys and 65-73 percent
ridges.
24 hr trend......30 percent up.
* 20ft winds.........
Valleys/lwr slopes...Southwest 12 to 17 mph.
Ridges/upr slopes....Southwest 12 to 17 mph with gusts to
around 30 mph.
* Chc Wetting Rain...50 percent.
* Mixing Height......5750-6750 ft AGL.
* Transport Winds....Southwest around 20 mph increasing to west
around 35 mph in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Mostly clear. Lows 21 to 28. Highs 37 to 44. West winds
10 to 20 mph with gusts to around 30 mph.
.TUESDAY...Clear. Lows 23 to 30. Highs 45 to 52. Southwest winds
5 to 10 mph with gusts to around 15 mph.
.WEDNESDAY...Partly cloudy. Lows 27 to 34. Highs 47 to 54.
Southwest winds 5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Partly cloudy. Lows in the lower 30s. Highs in the
lower 50s.
.FRIDAY...Partly cloudy. Lows in the mid 30s. Highs in the mid
50s.
$$
IDZ422-191100-
Sawtooth Range/Northern Sawtooth NF-
428 AM MDT Sat Oct 18 2025
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....48-55 valleys and 41-48 ridges.
24 hr trend......Little change.
* Min Humidity.......30-38 percent.
24 hr trend......10 percent down.
* 20ft winds.........
Valleys/lwr slopes...North 4 to 6 mph shifting to the southwest
4 to 7 mph in the afternoon.
Ridges/upr slopes....Northwest 5 to 8 mph shifting to the west
4 to 7 mph in the afternoon. Gusts up to
15 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......4500-5500 ft AGL.
* Transport Winds....Light winds becoming southwest around 10 mph
in the afternoon.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....29-36.
24 hr trend......6 degrees up.
* Max Humidity.......73-81 percent valleys and 83-91 percent
ridges.
24 hr trend......3 percent up.
* 20ft winds.........
Valleys/lwr slopes...West 4 to 6 mph shifting to the northwest
after midnight.
Ridges/upr slopes....Southwest 9 to 14 mph with gusts to around
25 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......0-1000 ft AGL.
* Transport Winds....Southwest around 10 mph.
.SUNDAY...
* Sky/weather........Mostly cloudy. Snow showers likely and chance
of rain showers in the morning, then rain
showers and snow showers in the afternoon.
* Chc of thunder.....0 percent.
* Max Temperature....47-54 valleys and 35-42 ridges.
24 hr trend......2 degrees down.
* Min Humidity.......58-66 percent valleys and 72-80 percent
ridges.
24 hr trend......33 percent up.
* 20ft winds.........
Valleys/lwr slopes...Southwest 10 to 15 mph.
Ridges/upr slopes....Southwest 10 to 15 mph with gusts to
around 25 mph.
* Chc Wetting Rain...60 percent.
* Mixing Height......4750-5750 ft AGL.
* Transport Winds....Southwest around 15 mph increasing to west
around 30 mph in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Clear. Lows 20 to 27. Highs 39 to 46. West winds 10 to
20 mph with gusts to around 30 mph.
.TUESDAY...Clear. Lows 22 to 29. Highs 46 to 53. Southwest winds
5 to 10 mph with gusts to around 15 mph.
.WEDNESDAY...Partly cloudy. Lows 27 to 34. Highs 48 to 55. West
winds 5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Partly cloudy. Lows in the lower 30s. Highs in the
lower 50s.
.FRIDAY...Partly cloudy with slight chance of showers. Lows in
the mid 30s. Highs in the mid 50s.
$$
IDZ425-191100-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
428 AM MDT Sat Oct 18 2025
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....53-58.
24 hr trend......Little change.
* Min Humidity.......37-44 percent.
24 hr trend......3 percent down.
* 20ft winds.........Southwest winds 4 to 9 mph with gusts to
around 20 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......3000-4000 ft AGL.
* Transport Winds....West around 10 mph.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....33-38.
24 hr trend......3 degrees up.
* Max Humidity.......76-84 percent.
24 hr trend......8 percent down.
* 20ft winds.........South winds 4 to 7 mph with gusts to around 15
mph shifting to the east 4 to 6 mph after
midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......0-1000 ft AGL.
* Transport Winds....Light winds becoming southeast around 10 mph
after midnight.
.SUNDAY...
* Sky/weather........Mostly sunny then becoming partly cloudy.
Chance of rain showers in the afternoon.
* Chc of thunder.....0 percent.
* Max Temperature....58-65.
24 hr trend......5 degrees up.
* Min Humidity.......42-50 percent.
24 hr trend......7 percent up.
* 20ft winds.........Southeast winds 4 to 7 mph with gusts to
around 15 mph shifting to the west 12 to 17
mph with gusts to around 30 mph in the
afternoon.
* Chc Wetting Rain...20 percent.
* Mixing Height......5000-6000 ft AGL.
* Transport Winds....South around 15 mph increasing to west around
30 mph in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Cooler, clear. Lows 28 to 34. Highs in the lower 50s.
West winds 10 to 20 mph with gusts to around 30 mph.
.TUESDAY...Clear. Lows around 30. Highs in the upper 50s. East
winds 5 to 10 mph with gusts to around 15 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 30s. Highs in the
lower 60s. Northeast winds 5 to 10 mph with gusts to around
15 mph.
.THURSDAY...Mostly clear. Lows in the mid 30s. Highs in the lower
60s.
.FRIDAY...Partly cloudy. Lows in the upper 30s. Highs in the
upper 60s.
$$
IDZ427-191100-
Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls
BLM south of the Snake River-
428 AM MDT Sat Oct 18 2025
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 58 valleys and 50-57 ridges.
24 hr trend......Little change.
* Min Humidity.......32-40 percent.
24 hr trend......4 percent down.
* 20ft winds.........
Valleys/lwr slopes...West 7 to 12 mph.
Ridges/upr slopes....West 7 to 12 mph. Gusts up to 25 mph in
the morning.
* Chc Wetting Rain...0 percent.
* Mixing Height......3750-4750 ft AGL.
* Transport Winds....West around 10 mph.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....38-45.
24 hr trend......6 degrees up.
* Max Humidity.......61-69 percent valleys and 57-65 percent
ridges.
24 hr trend......12 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 9 to 14 mph.
Ridges/upr slopes....South 10 to 15 mph with gusts to around 20
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......0-1000 ft AGL.
* Transport Winds....South 10 to 15 mph.
.SUNDAY...
* Sky/weather........Mostly sunny then becoming partly cloudy.
Slight chance of rain showers in the
afternoon.
* Chc of thunder.....0 percent.
* Max Temperature....64-69 valleys and 56-63 ridges.
24 hr trend......7 degrees up.
* Min Humidity.......37-45 percent.
24 hr trend......5 percent up.
* 20ft winds.........
Valleys/lwr slopes...South 7 to 12 mph shifting to the west 10
to 15 mph in the afternoon.
Ridges/upr slopes....South 10 to 15 mph shifting to the west in
the afternoon. Gusts up to 25 mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......5750-6750 ft AGL.
* Transport Winds....Southwest around 20 mph increasing to west
around 30 mph in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Cooler, breezy. Mostly clear. Lows 29 to 36. Highs
45 to 52. West winds 15 to 25 mph with gusts to around 30 mph.
.TUESDAY...Clear. Lows 29 to 36. Highs 55 to 62. South winds 5 to
10 mph with gusts to around 15 mph.
.WEDNESDAY...Partly cloudy. Lows 33 to 40. Highs 56 to 63. South
winds 5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Mostly clear. Lows in the upper 30s. Highs in the
lower 60s.
.FRIDAY...Partly cloudy. Lows in the lower 40s. Highs in the
lower 60s.
$$
IDZ410-191100-
Upper Snake River Valley/Idaho Falls BLM-
428 AM MDT Sat Oct 18 2025
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....47-54.
24 hr trend......Little change.
* Min Humidity.......40-48 percent.
24 hr trend......8 percent down.
* 20ft winds.........North winds 4 to 7 mph shifting to the
southwest 5 to 8 mph in the afternoon. Gusts
up to 15 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......4250-5250 ft AGL.
* Transport Winds....Light winds becoming southwest around 10 mph
in the afternoon.
.TONIGHT...
* Sky/weather........Mostly clear.
* Chc of thunder.....0 percent.
* Min Temperature....30-37.
24 hr trend......3 degrees up.
* Max Humidity.......73-81 percent.
24 hr trend......7 percent down.
* 20ft winds.........South winds 4 to 8 mph with gusts to around 20
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......0-1000 ft AGL.
* Transport Winds....South around 10 mph.
.SUNDAY...
* Sky/weather........Partly cloudy then becoming mostly cloudy.
Slight chance of rain showers in the morning,
then chance of rain showers in the afternoon.
* Chc of thunder.....0 percent.
* Max Temperature....53-60.
24 hr trend......6 degrees up.
* Min Humidity.......48-56 percent.
24 hr trend......8 percent up.
* 20ft winds.........Southeast winds 6 to 9 mph increasing to
southwest 15 to 20 mph in the afternoon. Gusts
up to 30 mph.
* Chc Wetting Rain...20 percent.
* Mixing Height......6000-7000 ft AGL.
* Transport Winds....South around 15 mph increasing to southwest
around 30 mph in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Breezy, clear. Chance of showers. Lows 25 to 32. Highs
44 to 51. Southwest winds 15 to 25 mph with gusts to around
35 mph.
.TUESDAY...Clear. Lows 24 to 29. Highs 49 to 56. Southeast winds
5 to 10 mph with gusts to around 15 mph.
.WEDNESDAY...Partly cloudy. Lows 29 to 34. Highs 53 to 59.
Northeast winds 5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Mostly clear. Lows in the lower 30s. Highs in the
upper 50s.
.FRIDAY...Partly cloudy. Lows in the mid 30s. Highs in the lower
60s.
$$
IDZ411-191100-
Centennial Mountains and Snake River Range/Targhee NF-
428 AM MDT Sat Oct 18 2025
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....46-51 valleys and 38-45 ridges.
24 hr trend......Little change.
* Min Humidity.......36-44 percent valleys and 43-51 percent
ridges.
24 hr trend......18 percent down.
* 20ft winds.........
Valleys/lwr slopes...North 4 to 5 mph shifting to the southwest
4 to 6 mph in the afternoon.
Ridges/upr slopes....Northwest 5 to 8 mph shifting to the
southwest in the afternoon. Gusts up to 15
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......4250-5250 ft AGL.
* Transport Winds....Northwest around 10 mph shifting to the west
in the afternoon.
.TONIGHT...
* Sky/weather........Mostly clear.
* Chc of thunder.....0 percent.
* Min Temperature....26-33.
24 hr trend......4 degrees up.
* Max Humidity.......76-84 percent valleys and 68-76 percent
ridges.
24 hr trend......13 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 5 to 10 mph.
Ridges/upr slopes....South 5 to 10 mph with gusts to around 20
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......0-500 ft AGL.
* Transport Winds....South around 10 mph.
.SUNDAY...
* Sky/weather........Mostly cloudy. Chance of snow showers and
slight chance of rain showers in the morning,
then rain showers and snow showers in the
afternoon.
* Chc of thunder.....0 percent.
* Max Temperature....51-58 valleys and 44-51 ridges.
24 hr trend......5 degrees up.
* Min Humidity.......47-55 percent valleys and 55-63 percent
ridges.
24 hr trend......13 percent up.
* 20ft winds.........
Valleys/lwr slopes...Southwest 10 to 15 mph.
Ridges/upr slopes....Southwest 10 to 15 mph. Gusts up to 20 mph
increasing to 30 mph in the afternoon.
* Chc Wetting Rain...60 percent.
* Mixing Height......5750-6750 ft AGL.
* Transport Winds....South around 15 mph increasing to southwest
around 30 mph in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Showers likely and chance of snow showers. Lows 21 to
28. Highs 36 to 43. West winds 10 to 20 mph with gusts to around
35 mph.
.TUESDAY...Clear. Lows 21 to 28. Highs 43 to 50. South winds 5 to
10 mph with gusts to around 15 mph.
.WEDNESDAY...Partly cloudy. Lows 27 to 34. Highs 46 to 53. South
winds 5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Mostly clear. Lows in the lower 30s. Highs in the
upper 40s.
.FRIDAY...Partly cloudy. Lows in the lower 30s. Highs in the
lower 50s.
$$
IDZ413-191100-
Caribou Range/Caribou NF-
428 AM MDT Sat Oct 18 2025
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....50-57 valleys and 43-50 ridges.
24 hr trend......Little change.
* Min Humidity.......37-45 percent.
24 hr trend......11 percent down.
* 20ft winds.........
Valleys/lwr slopes...West 4 to 6 mph.
Ridges/upr slopes....West 4 to 7 mph with gusts to around 15
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......4500-5500 ft AGL.
* Transport Winds....Northwest around 10 mph.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....32-39.
24 hr trend......4 degrees up.
* Max Humidity.......68-76 percent valleys and 63-71 percent
ridges.
24 hr trend......15 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 6 to 11 mph.
Ridges/upr slopes....South 6 to 11 mph with gusts to around 20
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......0-1000 ft AGL.
* Transport Winds....South around 10 mph.
.SUNDAY...
* Sky/weather........Sunny then becoming partly cloudy. Chance of
rain showers in the afternoon.
* Chc of thunder.....0 percent.
* Max Temperature....57-64 valleys and 50-57 ridges.
24 hr trend......7 degrees up.
* Min Humidity.......42-50 percent.
24 hr trend......5 percent up.
* 20ft winds.........
Valleys/lwr slopes...Southwest 11 to 16 mph.
Ridges/upr slopes....Southwest 11 to 16 mph with gusts to
around 30 mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......6250-7250 ft AGL.
* Transport Winds....South around 15 mph increasing to west around
30 mph in the afternoon.
.Forecast days 3 through 7......
.MONDAY...Cooler. Mostly clear. Chance of showers. Lows 27 to 34.
Highs 43 to 50. West winds 10 to 20 mph with gusts to around
35 mph.
.TUESDAY...Clear. Lows 25 to 32. Highs 52 to 59. South winds 5 to
10 mph with gusts to around 15 mph.
.WEDNESDAY...Mostly clear. Lows 30 to 37. Highs 54 to 61.
Southeast winds 5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Mostly clear. Lows in the mid 30s. Highs in the upper
50s.
.FRIDAY...Mostly clear. Lows in the mid 30s. Highs in the upper
50s.
$$
.OUTLOOK...For Saturday, Oct 25th through Friday, Oct 31st...
BELOW NORMAL temperatures and ABOVE NORMAL precipitation.
$$