Avalanche Weather Guidance
Issued by NWS Flagstaff, AZ

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031
FWUS45 KFGZ 162205
AVGFGZ

AVALANCHE WEATHER GUIDANCE
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
304 PM MST SUN AUG 16 2026


...AGASSIZ PEAK...

DATE                                        MONDAY 08/17/26                         TUESDAY 08/18/26
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   FW   FW   FW   CL   FW   BK   SC   SC   SC   SC   FW   FW   SC   BK   BK
CLOUD COVER (%)    45   30   10   10   10    5   20   55   40   40   35   40   25   10   25   65   55
TEMPERATURE        55   50   47   46   46   52   58   60   59   52   50   48   47   53   58   61   59
MIN/MAX TEMP                           46                  60                  47                  61
WIND DIR           SW    W   NW    S    S   SE    S    S    W    W    W    W    W    W   SW    W    W
WIND (MPH)          5    4    6    3    5    4    4    5    5    3    3    5    6    1    3    4    6
WIND GUST (MPH)
PRECIP PROB (%)    20    5    0    0    0    0   10   10    5    0    0    0    0    0   10   10    0
PRECIP TYPE         T                             T    T
6 HOUR QPF                 0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
12 HOUR QPF                          0.00                0.00                0.00                0.00
 LOW END QPF                         0.00                0.00                0.00                0.00
 HIGH END QPF                        0.01                0.04                0.00                0.09
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                         0.0                 0.0                 0.0                 0.0
 HIGH END SNOW                        0.0                 0.0                 0.0                 0.0
6 HOUR ICE                 0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
SNOW LEVEL (KFT) 14.8 14.7 14.6 14.4 14.3 14.2 14.5 15.0 15.1 14.9 14.8 14.5 14.6 14.6 15.1 15.0 15.1
SNOW RATIO (:1)     0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0

DATE                         WED 08/19/26        THU 08/20/26        FRI 08/21/26        SAT 08/22/26        SUN 08/23/26
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        SC   FW   SC   SC   SC   SC   OV   BK   BK   BK   OV   BK   SC   SC   OV   BK   SC   SC   OV   BK
CLOUD COVER (%)    25   20   50   50   35   35   80   55   60   55   75   55   40   45   75   55   45   35   75   55
TEMPERATURE        51   48   59   58   52   50   58   56   50   49   57   55   49   48   55   53   48   47   53   53
MAX/MIN TEMP            48        61        49        61        48        59        47        58        47        56
WIND DIR            W    W    W    W    W    W    E    W    W    W    S    W   NW   NW    S   SW    W   SW    S    W
WIND (MPH)          8   11    9    6   12   10    4    6    6    4    3    6    4    2    3    5    3    3    3    5
WIND GUST (MPH)              14                       12              9                  10   11             10
PRECIP PROB (%)     0    0   30   20    0    0   70   20   20   20   70   30   10    5   70   30    5   10   70   20
PRECIP TYPE                   T    T              T    T    T    R    T    T              T    T              T    T
12 HOUR QPF           0.00      0.01
12 HOUR SNOW           0.0       0.0
12 HOUR ICE           0.00      0.00
SNOW LEVEL (KFT) 14.9 14.7 14.9 15.2 14.8 14.7 15.0 15.2 15.1 14.9 15.0 15.2 15.0 14.8 14.9 15.1 14.8 14.5 14.7 14.9
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 08/17/26                         TUESDAY 08/18/26
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        BK   SC   FW   FW   FW   CL   FW   BK   BK   SC   SC   SC   FW   FW   SC   BK   BK
CLOUD COVER (%)    50   30   10   10   10    5   20   60   50   45   35   35   25   10   25   65   60
TEMPERATURE        66   55   54   51   51   66   74   73   71   59   58   54   51   67   75   72   70
MIN/MAX TEMP                           51                  74                  51                  75
WIND DIR           SW    W   NW    S    S   SE    S    S    W    W   SW    W    W    W   SW    W    W
WIND (MPH)          6    4    4    3    5    4    5    5    5    3    3    5    6    1    2    4    6
WIND GUST (MPH)
PRECIP PROB (%)    20    5    0    0    0    0   10   10    5    0    0    0    0    0   10   10    0
PRECIP TYPE         T                             T    T
6 HOUR QPF                 0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
12 HOUR QPF                          0.00                0.00                0.00                0.00
 LOW END QPF                         0.00                0.00                0.00                0.00
 HIGH END QPF                        0.01                0.04                0.00                0.08
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                         0.0                 0.0                 0.0                 0.0
 HIGH END SNOW                        0.0                 0.0                 0.0                 0.0
6 HOUR ICE                 0.00      0.00      0.00      0.00      0.00      0.00      0.00      0.00
SNOW LEVEL (KFT) 14.8 14.7 14.6 14.4 14.3 14.2 14.5 15.0 15.2 15.0 14.8 14.6 14.6 14.6 15.1 15.0 15.1
SNOW RATIO (:1)     0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0

DATE                         WED 08/19/26        THU 08/20/26        FRI 08/21/26        SAT 08/22/26        SUN 08/23/26
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   FW   SC   SC   SC   SC   OV   BK   BK   BK   OV   BK   SC   SC   OV   BK   SC   SC   OV   BK
CLOUD COVER (%)    25   20   50   50   35   35   80   55   55   55   75   55   40   45   75   55   40   35   75   55
TEMPERATURE        58   54   75   69   61   57   73   66   59   56   72   65   57   55   70   63   56   54   68   63
MAX/MIN TEMP            53        75        53        75        53        73        52        72        52        70
WIND DIR            W    W    W    W    W    W   NE    W    W    W   SE    W    W    W    S   SW    W   SW    S    W
WIND (MPH)          8   11    9    6   11   10    3    6    6    3    4    5    3    2    4    5    2    2    4    4
WIND GUST (MPH)              14        18                                 11             10
PRECIP PROB (%)     0    0   30   20    0    0   70   20   20   10   70   30   10    5   70   40    5   10   70   20
PRECIP TYPE                   T    T              T    T    T         T    T              T    T              T    T
12 HOUR QPF           0.00      0.02
12 HOUR SNOW           0.0       0.0
12 HOUR ICE           0.00      0.00
SNOW LEVEL (KFT) 14.9 14.7 14.9 15.2 14.8 14.7 15.0 15.2 15.1 14.9 15.0 15.2 15.0 14.8 14.9 15.2 14.8 14.5 14.7 14.9
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