Snow Avalanche Guidance
Issued by NWS Pocatello, ID

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000
FWUS45 KPIH 221017
SAGPIH

SNOW AVALANCHE GUIDANCE PRODUCT
NATIONAL WEATHER SERVICE POCATELLO ID
317 AM MST SUN JAN 22 2017

.DISCUSSION...THE NEXT PACIFIC STORM SYSTEM WAS SPREADING ONSHORE
THIS MORNING AND WILL BEGIN TO IMPACT THE CENTRAL IDAHO MOUNTAINS
BY THIS AFTERNOON. MODERATE TO HEAVY SNOWFALL IS EXPECTED THIS
AFTERNOON TAPERING OFF FAIRLY QUICKLY TOWARDS MIDNIGHT. A SECOND
WAVE WILL MOVE INLAND MONDAY WHICH THE MODELS HAVE BEEN HAVING A
DIFFICULT TIME SETTLING ON A TRACK AS IT SHEARS THROUGH SOUTHERN
IDAHO. FOR NOW, IT LOOKS LIKE THE BULK OF THE PRECIPITATION FROM
THIS FEATURE WILL REMAIN SOUTH OF THE AREA. THE ELEVATED SNOW
TOTALS DISPLAYED BELOW FOR MONDAY REPRESENT SOME OF THAT
UNCERTAINTY.

**********SAWTOOTH RECREATION AREA FORECAST**********
...BALD MTN (9145 FT)...
                         TODAY...     TONIGHT...      MONDAY...

CLOUD COVER                CLOUDY         CLOUDY          MCLDY
PRECIP TYPE                  SNOW           SNOW           SNOW
MAX/MIN/MAX TEMP               24             18             23
WIND                  S AROUND 14    S AROUND 13     E AROUND 6
QPF                          0.31           0.10           0.12
SNOW AMOUNT                   4.6            1.5            1.9
PRECIP PROB (%)               100             60             65

QPF PROBABILITIES...
PROB (%) > 0.10 IN             93             39             47
PROB (%) > 0.25 IN             60             20             25
PROB (%) > 0.50 IN             20             10             10
PROB (%) > 1.00 IN              5              5              5

...TITUS PEAK (10079 FT)...
                         TODAY...     TONIGHT...      MONDAY...

CLOUD COVER                CLOUDY         CLOUDY         CLOUDY
PRECIP TYPE                  SNOW           SNOW           SNOW
MAX/MIN/MAX TEMP               21             14             19
WIND                  S AROUND 24    S AROUND 18    SE AROUND 7
QPF                          0.33           0.10           0.13
SNOW AMOUNT                   5.1            1.5            2.1
PRECIP PROB (%)               100             70             70

QPF PROBABILITIES...
PROB (%) > 0.10 IN             96             39             54
PROB (%) > 0.25 IN             65             20             25
PROB (%) > 0.50 IN             25             10             10
PROB (%) > 1.00 IN              5              5              5

ESTIMATED PAST 24HR (3AM-3AM) SNOWFALL: 1.5


...SOLDIER MTN (9495 FT)...
                         TODAY...     TONIGHT...      MONDAY...

CLOUD COVER                CLOUDY         CLOUDY         CLOUDY
PRECIP TYPE                  SNOW           SNOW           SNOW
MAX/MIN/MAX TEMP               21             16             20
WIND                 SE AROUND 22   SW AROUND 15     E AROUND 9
QPF                          0.44           0.12           0.17
SNOW AMOUNT                   5.4            1.4            2.2
PRECIP PROB (%)               100             80             75

QPF PROBABILITIES...
PROB (%) > 0.10 IN             98             56             65
PROB (%) > 0.25 IN             80             20             35
PROB (%) > 0.50 IN             40              5             15
PROB (%) > 1.00 IN             10              0              5

...SAWTOOTH (7775 FT)...
                         TODAY...     TONIGHT...      MONDAY...

CLOUD COVER                CLOUDY          MCLDY         CLOUDY
PRECIP TYPE                  SNOW           SNOW           SNOW
MAX/MIN/MAX TEMP               27             13             24
WIND                 SE AROUND 13    S AROUND 12    SE AROUND 5
QPF                          0.23           0.08           0.11
SNOW AMOUNT                   3.3            1.2            1.6
PRECIP PROB (%)               100             50             60

QPF PROBABILITIES...
PROB (%) > 0.10 IN             89             31             44
PROB (%) > 0.25 IN             40             20             25
PROB (%) > 0.50 IN             10             10             10
PROB (%) > 1.00 IN              0              5              5

...VIENNA MINE (8960 FT)...
                         TODAY...     TONIGHT...      MONDAY...

CLOUD COVER                CLOUDY         CLOUDY          MCLDY
PRECIP TYPE                  SNOW           SNOW           SNOW
MAX/MIN/MAX TEMP               20             13             21
WIND                  S AROUND 17    S AROUND 13    NE AROUND 7
QPF                          0.28           0.10           0.13
SNOW AMOUNT                   3.5            1.1            1.8
PRECIP PROB (%)               100             80             70

QPF PROBABILITIES...
PROB (%) > 0.10 IN             93             50             56
PROB (%) > 0.25 IN             55             15             30
PROB (%) > 0.50 IN             15              5             10
PROB (%) > 1.00 IN              5              0              5

$$
**********SUN VALLEY AREA FORECAST**********
...VALLEYS TO 6500 FT...
                         TODAY...     TONIGHT...      MONDAY...

CLOUD COVER                CLOUDY         CLOUDY          MCLDY
PRECIP TYPE                  SNOW           SNOW           SNOW
MAX/MIN/MAX TEMP         29 TO 31       15 TO 22       27 TO 30
WIND                 NW AROUND 15    S AROUND 13     N AROUND 8
SNOW AMOUNT                   3-5       AROUND 2       AROUND 2

...6500 FT TO 8000 FT...
                         TODAY...     TONIGHT...      MONDAY...

CLOUD COVER                CLOUDY         CLOUDY          MCLDY
PRECIP TYPE                  SNOW           SNOW           SNOW
MAX/MIN/MAX TEMP         25 TO 31       10 TO 19       24 TO 29
WIND                   SW 6 TO 16    S AROUND 13    NE AROUND 8
SNOW AMOUNT              AROUND 5       AROUND 2       AROUND 2

$$



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