Avalanche Weather Guidance
Issued by NWS Flagstaff, AZ

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589
FWUS45 KFGZ 150447
AVGFGZ

AVALANCHE WEATHER GUIDANCE
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
945 PM MST MON SEP 14 2026


...AGASSIZ PEAK...

DATE                                        TUESDAY 09/15/26                        WEDNESDAY 09/16/26
TIME (LT)          17   20   23   02   05   08   11   14   17   20   23   02   05   08   11   14   17
                   5P   8P   11P  2A   5A   8A   11A  2P   5P   8P   11P  2A   5A   8A   11A  2P   5P

CLOUD COVER                  SC   BK   BK   BK   BK   BK   BK   SC   BK   OV   OV   OV   OV   OV   BK
CLOUD COVER (%)              50   55   65   65   60   60   55   45   55   75   85   80   85   85   60
TEMPERATURE                  45   44   44   44   50   52   48   44   42   44   42   42   45   48   45
MIN/MAX TEMP                           44                  53                  42                  49
WIND DIR                     SW   SW   SW    S    S   SW   SW   SW    S   SW    S    S    S    S    S
WIND (MPH)                   10   11   11   10   11   12   13   10    9    9   12   10   10   11    9
WIND GUST (MPH)                             17   17   20   23   16             18   17   16   18
PRECIP PROB (%)              20   20   20   20   40   40   20   20   30   30   50   50   80   80   40
PRECIP TYPE                   T    T    R    T    T    T    T    T    R    R    R    R    R    R    R
6 HOUR QPF                 0.00      0.00      0.02      0.00      0.00      0.00      0.06      0.11
12 HOUR QPF                          0.00                0.02                0.00                0.17
 LOW END QPF                           MM                  MM                  MM                  MM
 HIGH END QPF                          MM                  MM                  MM                  MM
6 HOUR SNOW                 0.0       0.0       0.0       0.0       0.0       0.0       0.0       0.0
12 HOUR SNOW                          0.0                 0.0                 0.0                 0.0
 LOW END SNOW                          MM                  MM                  MM                  MM
 HIGH END SNOW                         MM                  MM                  MM                  MM
6 HOUR ICE                 0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
SNOW LEVEL (KFT)           13.6 13.8 14.1 14.2 14.1 14.0 14.2 14.0 13.7 13.6 13.7 13.9 14.0 14.2 14.0
SNOW RATIO (:1)               0    0    0    0    0    0    0    0    0    0    0    0    0    0    0

DATE                         THU 09/17/26        FRI 09/18/26        SAT 09/19/26        SUN 09/20/26        MON 09/21/26
TIME (LT)          23   05   11   17   23   05   11   17   23   05   11   17   23   05   11   17   23   05   11   17
                   11P  5A   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P

CLOUD COVER        BK   OV   BK   SC   SC   FW   SC   FW   FW   FW   BK   SC   FW   FW   SC   SC   SC   SC   BK   SC
CLOUD COVER (%)    65   80   65   40   30   20   30   20    5   10   55   25   25   20   45   30   25   35   55   35
TEMPERATURE        41   41   46   49   41   40   50   48   41   40   48   47   41   39   48   48   41   39   46   46
MAX/MIN TEMP            41        51        40        53        40        52        39        51        39        49
WIND DIR            S    S    S   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW    W    S    S
WIND (MPH)          4    8    6   10   10    9    9    5    4    3    4    4    4    4    4    4    4    4    5    5
WIND GUST (MPH)                   16             14                  10                  10                  11
PRECIP PROB (%)    50   30   50   20    0    0   20   10    0    5   40   20    0    0   30    5   10   20   40   20
PRECIP TYPE         R    R    T    T              T    T              T    T              R              R    T    T
12 HOUR QPF           0.05      0.09
12 HOUR SNOW           0.0       0.0
12 HOUR ICE           0.00      0.00
SNOW LEVEL (KFT) 13.9 14.1 14.0 14.1 13.5 12.8 13.3 13.5 12.9 12.5 12.6 12.8 12.3 12.1 12.3 12.5 12.3 12.1 12.2 12.5
SNOW RATIO (:1)     0    0    0    0    0    0    0    1    1    1    1    1    1    1    1    1    1    1    1    1


...INNER BASIN...

DATE                                        TUESDAY 09/15/26                        WEDNESDAY 09/16/26
TIME (LT)          17   20   23   02   05   08   11   14   17   20   23   02   05   08   11   14   17
                   5P   8P   11P  2A   5A   8A   11A  2P   5P   8P   11P  2A   5A   8A   11A  2P   5P

CLOUD COVER                  SC   SC   BK   BK   BK   BK   SC   SC   BK   BK   OV   OV   OV   OV   BK
CLOUD COVER (%)              45   45   65   65   60   60   50   45   50   65   80   75   85   85   60
TEMPERATURE                  49   48   47   55   65   62   56   49   46   45   45   51   61   58   54
MIN/MAX TEMP                           47                  65                  45                  61
WIND DIR                     SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW    S    S    S    S
WIND (MPH)                   10   11   10    9   10   12   14    9    9    9   12    9   10   11    8
WIND GUST (MPH)                             14   17   19   23   14                  14   16   18   13
PRECIP PROB (%)              10   10   20   20   40   40   20   20   30   30   50   50   80   80   40
PRECIP TYPE                   T    T    R    T    T    T    T    T    R    R    R    R    R    R    R
6 HOUR QPF                 0.00      0.00      0.02      0.00      0.00      0.00      0.04      0.11
12 HOUR QPF                          0.00                0.02                0.00                0.15
 LOW END QPF                           MM                  MM                  MM                  MM
 HIGH END QPF                          MM                  MM                  MM                  MM
6 HOUR SNOW                 0.0       0.0       0.0       0.0       0.0       0.0       0.0       0.0
12 HOUR SNOW                          0.0                 0.0                 0.0                 0.0
 LOW END SNOW                          MM                  MM                  MM                  MM
 HIGH END SNOW                         MM                  MM                  MM                  MM
6 HOUR ICE                 0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
SNOW LEVEL (KFT)           13.6 13.9 14.1 14.1 14.2 14.1 14.2 14.0 13.7 13.6 13.7 13.9 14.0 14.2 14.0
SNOW RATIO (:1)               0    0    0    0    0    0    0    0    0    0    0    0    0    0    0

DATE                         THU 09/17/26        FRI 09/18/26        SAT 09/19/26        SUN 09/20/26        MON 09/21/26
TIME (LT)          23   05   11   17   23   05   11   17   23   05   11   17   23   05   11   17   23   05   11   17
                   11P  5A   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P

CLOUD COVER        BK   OV   BK   SC   SC   FW   SC   FW   FW   FW   BK   SC   FW   FW   SC   SC   SC   SC   BK   SC
CLOUD COVER (%)    65   80   65   45   30   15   30   25    5   10   60   30   25   20   45   30   25   30   55   35
TEMPERATURE        46   45   62   57   47   43   65   56   46   44   61   55   47   44   61   56   46   44   59   54
MAX/MIN TEMP            44        63        43        65        43        63        42        62        42        61
WIND DIR            S    S    S   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW    W   SE    S
WIND (MPH)          4    6    6    9   10    9    9    4    3    3    5    4    3    3    5    4    3    3    5    4
WIND GUST (MPH)                   14             14                                                          11
PRECIP PROB (%)    50   30   50   20    0    0   20   10    0    5   40   20    0    0   30    5   10   20   40   20
PRECIP TYPE         R    R    T    T              T    T              T    T              R              R    T    T
12 HOUR QPF           0.06      0.09
12 HOUR SNOW           0.0       0.0
12 HOUR ICE           0.00      0.00
SNOW LEVEL (KFT) 13.9 14.1 14.0 14.1 13.5 12.8 13.3 13.5 12.9 12.5 12.6 12.8 12.4 12.1 12.3 12.6 12.3 12.1 12.2 12.5
SNOW RATIO (:1)     0    0    0    0    0    0    0    1    1    1    1    1    1    1    1    1    1    1    1    0

$$

--- PRECIP TYPE CODES ---

CODE   TYPE
 T     THUNDERSTORMS
 R     RAIN
 S     SNOW
 I     SLEET
 Z     FREEZING RAIN