Avalanche Weather Guidance
Issued by NWS Flagstaff, AZ

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434
FWUS45 KFGZ 151005
AVGFGZ

AVALANCHE WEATHER GUIDANCE
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
304 AM MST TUE SEP 15 2026


...AGASSIZ PEAK...

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

CLOUD COVER        BK   BK   BK   BK   BK   SC   BK   OV   OV   OV   OV   OV   BK   BK   BK   OV   OV
CLOUD COVER (%)    65   65   60   60   55   45   55   75   85   80   85   85   60   65   65   70   80
TEMPERATURE        44   44   50   52   48   44   42   44   42   42   45   48   45   42   41   41   41
MAX/MIN TEMP                           53                  42                  49                  41
WIND DIR           SW    S    S   SW   SW   SW    S   SW    S    S    S    S    S    S    S    S    S
WIND (MPH)         11   10   11   12   13   10    9    9   12   10   10   11    9    4    4    5    8
WIND GUST (MPH)         17   17   20   23   16             18   17   16   18
PRECIP PROB (%)    20   20   40   40   20   20   30   30   50   50   80   80   40   40   50   50   30
PRECIP TYPE         R    T    T    T    T    T    R    R    R    R    R    R    R    R    R    R    R
6 HOUR QPF                 0.02      0.00      0.00      0.00      0.06      0.11      0.02      0.03
12 HOUR QPF                          0.02                0.00                0.17                0.05
 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) 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 14.0 13.9 14.1 14.1
SNOW RATIO (:1)     0    0    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)          11   17   23   05   11   17   23   05   11   17   23   05   11   17   23   05   11   17
                   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P

CLOUD COVER        BK   SC   SC   FW   SC   FW   FW   FW   SC   SC   FW   SC   SC   SC   FW   SC   BK   SC
CLOUD COVER (%)    65   40   30   20   30   25    5   10   45   25   20   30   35   45   25   35   50   45
TEMPERATURE        46   49   41   40   50   50   42   41   50   49   41   40   49   48   41   39   47   48
MIN/MAX TEMP            51        40        53        40        52        40        52        39        50
WIND DIR            S   SW   SW   SW   SW   SW   SW    W   SW   SW   SW    W    S   SW   SW   SW    S    S
WIND (MPH)          6   10   10    9    9    4    4    3    3    4    4    3    4    5    4    4    6    5
WIND GUST (MPH)         16             14                   9                  10                  12
PRECIP PROB (%)    50   20    0    0   20   10    0    0   30   10    0    0   20   10   10   10   30   20
PRECIP TYPE         T    T              T                   T    T              T    T              T    T
12 HOUR QPF           0.09      0.00
12 HOUR SNOW           0.0       0.0
12 HOUR ICE           0.00      0.00
SNOW LEVEL (KFT) 14.0 14.1 13.5 12.8 13.3 13.4 12.9 12.6 12.7 12.9 12.5 12.2 12.5 12.7 12.5 12.2 12.4 12.6
SNOW RATIO (:1)     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)          05   08   11   14   17   20   23   02   05   08   11   14   17   20   23   02   05
                   5A   8A   11A  2P   5P   8P   11P  2A   5A   8A   11A  2P   5P   8P   11P  2A   5A

CLOUD COVER        BK   BK   BK   BK   SC   SC   BK   BK   OV   OV   OV   OV   BK   BK   BK   OV   OV
CLOUD COVER (%)    65   65   60   60   50   45   50   65   80   75   85   85   60   65   65   70   80
TEMPERATURE        47   55   65   62   56   49   46   45   45   51   61   58   54   47   46   45   45
MAX/MIN TEMP                           65                  45                  61                  44
WIND DIR           SW   SW   SW   SW   SW   SW   SW   SW   SW    S    S    S    S   SW    S    S    S
WIND (MPH)         10    9   10   12   14    9    9    9   12    9   10   11    8    4    4    5    6
WIND GUST (MPH)         14   17   19   23   14                  14   16   18   13
PRECIP PROB (%)    20   20   40   40   20   20   30   30   50   50   80   80   40   40   50   50   30
PRECIP TYPE         R    T    T    T    T    T    R    R    R    R    R    R    R    R    R    R    R
6 HOUR QPF                 0.02      0.00      0.00      0.00      0.04      0.11      0.02      0.04
12 HOUR QPF                          0.02                0.00                0.15                0.06
 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) 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 14.0 13.9 14.1 14.1
SNOW RATIO (:1)     0    0    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)          11   17   23   05   11   17   23   05   11   17   23   05   11   17   23   05   11   17
                   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P   11P  5A   11A  5P

CLOUD COVER        BK   SC   SC   FW   SC   FW   FW   FW   SC   SC   FW   SC   SC   SC   FW   SC   BK   SC
CLOUD COVER (%)    65   45   30   15   30   25    5   10   45   30   20   25   35   45   20   35   50   50
TEMPERATURE        62   57   47   43   65   58   47   45   62   57   46   45   61   56   46   44   60   55
MIN/MAX TEMP            63        43        65        44        64        43        64        42        62
WIND DIR            S   SW   SW   SW   SW   SW   SW    W   SW   SW   SW    W    S   SW   SW   SW    S    S
WIND (MPH)          6    9   10    9    9    4    3    3    4    4    3    2    4    4    3    3    6    5
WIND GUST (MPH)         14             14                                      10
PRECIP PROB (%)    50   20    0    0   20   10    0    0   30   10    0    0   20   10   10   10   30   20
PRECIP TYPE         T    T              T                   T    T              T    T              T    T
12 HOUR QPF           0.09      0.00
12 HOUR SNOW           0.0       0.0
12 HOUR ICE           0.00      0.00
SNOW LEVEL (KFT) 14.0 14.1 13.5 12.8 13.3 13.5 12.9 12.6 12.7 12.9 12.5 12.2 12.5 12.7 12.5 12.2 12.4 12.6
SNOW RATIO (:1)     0    0    0    0    0    1    1    1    1    1    1    1    1    1    1    1    1    1

$$

--- PRECIP TYPE CODES ---

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