Avalanche Weather Guidance
Issued by NWS Flagstaff, AZ

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494
FWUS45 KFGZ 132205
AVGFGZ

AVALANCHE WEATHER GUIDANCE
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
304 PM MST SUN SEP 13 2026


...AGASSIZ PEAK...

DATE                                        MONDAY 09/14/26                         TUESDAY 09/15/26
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        OV   SC   SC   BK   BK   BK   BK   BK   SC   SC   SC   SC   BK   BK   BK   BK   SC
CLOUD COVER (%)    70   45   35   55   55   65   70   70   45   45   45   45   55   55   55   55   30
TEMPERATURE        50   47   46   44   44   43   49   52   51   46   44   44   42   43   50   53   51
MIN/MAX TEMP                           43                  54                  42                  54
WIND DIR           SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW    S   SW   SW   SW
WIND (MPH)         14   13   13   14   16   16   17   17   16   11   10   10   10   11   10   11   12
WIND GUST (MPH)    23   23   19   20   23   25   26   26   25   18                  18   17   19   20
PRECIP PROB (%)    30    5    5    5   10   20   50   40   20   20   20   20   30   30   30   30    5
PRECIP TYPE         T                        T    T    T    T    R    R    T    R    R    T    T
6 HOUR QPF                 0.02      0.00      0.05      0.07      0.01      0.00      0.01      0.00
12 HOUR QPF                          0.02                0.12                0.01                0.01
 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) 15.1 14.7 14.6 14.5 14.3 14.2 14.1 14.6 14.3 14.0 14.0 13.6 13.9 14.1 14.0 14.1 14.2
SNOW RATIO (:1)     0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0

DATE                         WED 09/16/26        THU 09/17/26        FRI 09/18/26        SAT 09/19/26        SUN 09/20/26
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        FW   SC   BK   BK   BK   BK   OV   SC   FW   FW   BK   SC   FW   FW   SC   SC   FW   FW   SC   SC
CLOUD COVER (%)    20   45   65   55   50   60   70   45   25   25   55   40   20   15   50   25   20   20   35   50
TEMPERATURE        43   40   47   51   43   42   48   50   43   41   49   50   43   41   50   50   43   41   50   49
MAX/MIN TEMP            40        53        42        52        41        53        41        53        40        52
WIND DIR           SW   SW    S    S    S   SW    S   SW   SW   SW    S   SW   SW    W   SW   SW    W    W   SW   SW
WIND (MPH)         10   13   13    9    8    6    6    5    5    4    3    4    5    5    4    4    5    6    6    8
WIND GUST (MPH)              23   14             13   11              9                  10
PRECIP PROB (%)    10   30   50   30   30   30   60   30    5    5   40   10    5    5   30   10    5    0   20   10
PRECIP TYPE              R    T    T    R    R    R    R              T    T              T    T              T
12 HOUR QPF           0.00      0.13
12 HOUR SNOW           0.0       0.0
12 HOUR ICE           0.00      0.00
SNOW LEVEL (KFT) 13.6 13.6 14.1 14.3 14.0 13.9 14.1 14.1 13.7 13.3 13.5 13.7 13.2 12.9 13.0 13.1 12.7 12.3 12.5 12.8
SNOW RATIO (:1)     0    0    0    1    1    1    1    1    1    1    1    1    1    1    1    1    1    1    1    0


...INNER BASIN...

DATE                                        MONDAY 09/14/26                         TUESDAY 09/15/26
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        OV   SC   FW   SC   SC   BK   BK   BK   SC   SC   SC   SC   BK   BK   BK   BK   SC
CLOUD COVER (%)    70   40   20   40   50   55   65   65   45   45   45   45   55   55   55   55   30
TEMPERATURE        58   53   51   51   48   53   61   59   56   50   47   48   46   50   61   59   56
MIN/MAX TEMP                           47                  63                  45                  63
WIND DIR           SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW   SW
WIND (MPH)         14   12   13   13   14   14   16   14   14   10   10    9   10   11    9   10   12
WIND GUST (MPH)    24   20   19        21   23   26   24   24   16                  17   16   17   19
PRECIP PROB (%)    30    5    5    5   10   20   40   40   20   20   20   20   30   30   30   30    5
PRECIP TYPE         T                        T    T    T    T    R    R    T    R    R    T    T
6 HOUR QPF                 0.01      0.00      0.04      0.05      0.01      0.00      0.00      0.00
12 HOUR QPF                          0.01                0.09                0.01                0.00
 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) 15.1 14.7 14.6 14.5 14.3 14.2 14.1 14.6 14.3 14.0 14.0 13.6 13.9 14.1 14.0 14.1 14.2
SNOW RATIO (:1)     0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0

DATE                         WED 09/16/26        THU 09/17/26        FRI 09/18/26        SAT 09/19/26        SUN 09/20/26
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        FW   SC   BK   BK   BK   BK   OV   SC   FW   FW   BK   SC   FW   FW   SC   SC   FW   FW   SC   SC
CLOUD COVER (%)    20   40   65   55   50   60   70   45   20   25   55   40   15   10   50   30   15   15   35   50
TEMPERATURE        47   44   61   59   48   46   61   58   48   44   62   59   48   45   63   59   48   45   63   57
MAX/MIN TEMP            44        62        45        63        44        65        44        65        44        64
WIND DIR           SW   SW   SW    S    S   SW    S   SW   SW   SW    S   SW   SW    W   SW   SW   SW    W   SW   SW
WIND (MPH)          9   12   13    8    6    5    6    5    4    3    4    4    4    4    4    4    4    5    6    6
WIND GUST (MPH)         18   21   14             12                                      10
PRECIP PROB (%)     5   20   50   30   30   30   60   30    5    5   40   10    5    5   30   10    5    0   20   10
PRECIP TYPE              R    T    T    R    R    R    R              T    T              T    T              T
12 HOUR QPF           0.00      0.11
12 HOUR SNOW           0.0       0.0
12 HOUR ICE           0.00      0.00
SNOW LEVEL (KFT) 13.6 13.6 14.1 14.3 14.0 13.9 14.1 14.1 13.7 13.3 13.5 13.7 13.2 12.9 13.0 13.1 12.7 12.3 12.5 12.8
SNOW RATIO (:1)     0    0    0    1    1    1    1    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