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Issued by NWS Great Falls, MT

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Point Forecast Matrices
National Weather Service Great Falls MT
847 PM MST Thu Nov 21 2024

MTZ312-221100-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
847 PM MST Thu Nov 21 2024

Date          Thu 11/21/24      Fri 11/22/24            Sat 11/23/24         Sun
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      20          26          21          28           7
Temp                   25 23 21 22 24 25 23 22 23 23 22 24 27 27 22 17 15 14 12
Dewpt                  18 18 17 18 20 21 21 20 21 21 18 21 23 22 19 14 11  8  6
RH                     74 81 84 84 84 84 92 92 92 92 84 88 85 81 88 88 84 76 76
Wind dir                N  N NE NE NE NE NE NE NE NE NE  N NW NW NW NW  W  W  W
Wind spd                5  5  5  5  6  6  5  4  4  3  4  5  6 10 12 11 10  8  6
Clouds                 OV OV OV OV OV OV OV B2 OV OV OV OV OV OV B2 B2 B2 B2 B2
PoP 12hr                     20          80          60         100          70
QPF 12hr                      0        0.08        0.02        0.24        0.10
Snow 12hr                 00-00           T       00-00
Frzg drzl                                 S     S  L
Frzg rain                              C     S
Rain                    S
Snow                    S        C  D        S  L     D  D  D  D  L  L  C  C  C
Winter Weath                  Y  Y  Y  Y  Y  Y        Y  Y  Y  Y  Y  Y  Y  Y


Date           11/24/24  Mon 11/25/24  Tue 11/26/24  Wed 11/27/24  Thu 11/28/24
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          16       0    21       9    34      14    32       9    22
Temp          15 11  6    2 15 18 17   17 31 28 22   19 27 25 16   14 20 17
Dewpt          9  7  2   -3 10 12 11    9 21 22 16   13 20 20 11    8 13 12
PWind dir         W       E    SE      SW    SW      SW    SW       W     W
Wind char        LT      LT    LT      LT    GN      LT    LT      LT    LT
Avg clouds    B2 B1 B1   B1 B2 B1 B1   SC SC FW SC   B1 B1 SC B1   B1 B2 B1
PoP 12hr         30      10     5      10     5      10    20      30    20
Snow           C                                            S  C    S  S  S

$$
MTZ303-221100-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
847 PM MST Thu Nov 21 2024

Date          Thu 11/21/24      Fri 11/22/24            Sat 11/23/24         Sun
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      12          20          14          21           0
Temp                   15 14 13 14 17 19 17 16 17 16 15 17 19 19 14  9  9  9  5
Dewpt                  11 11 10 12 15 17 15 14 15 14 14 15 17 16 11  6  5  5  1
RH                     84 88 87 92 92 92 92 92 92 92 96 92 92 88 88 87 83 83 83
Wind dir                N  N  N  N NE NE NE  E  E  E  E NE  N NW NW NW NW NW NW
Wind spd                6  4  3  4  5  6  5  5  4  4  5  6 19 25 25 27 26 23 16
Wind gust                                                     35 35 39 36
Clouds                 OV OV OV OV OV OV OV OV OV OV OV OV OV OV B2 B2 OV OV B2
PoP 12hr                     60         100          80         100          60
QPF 12hr                   0.02        0.17        0.07        0.23        0.06
Snow 12hr                     T           2           1
Frzg drzl                              S  S  S
Snow                    C        C  D  C  C  C  D  D  D  D  D  D  L  L  C  C  S
Obvis                                                      BS BS BS BS BS BS
Wind chill                                                       -5-12-13-12-14
Min chill                                                        -6   -14   -16
Winter Storm                                          A  A  A  A  A  A  A  A
Winter Weath                  Y  Y  Y  Y  Y  Y


Date           11/24/24  Mon 11/25/24  Tue 11/26/24  Wed 11/27/24  Thu 11/28/24
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          12      -7    13       2    30      10    27       5    17
Temp          10  7  1   -5  8 11 10   11 25 24 18   14 22 19 12    8 14 12
Dewpt          6  3 -2   -8  5  7  6    6 20 20 14   10 17 15  8    4  9  9
PWind dir        NW       W    SE      SW     W       W    NW      NW    NW
Wind char        GN      LT    LT      LT    GN      GN    GN      GN    GN
Avg clouds    OV B2 B2   B2 B2 B2 B1   B1 SC FW SC   B1 B1 SC B1   B2 B2 B2
PoP 12hr         20      10    10       5     5       5    20      20    20
Snow           S                                            S  S          S

$$
MTZ319-221100-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
847 PM MST Thu Nov 21 2024

Date          Thu 11/21/24      Fri 11/22/24            Sat 11/23/24         Sun
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      28          41          29          42          15
Temp                   37 33 29 30 34 40 39 36 34 33 30 31 36 38 32 29 25 23 19
Dewpt                  29 28 26 27 31 33 33 30 28 28 26 26 30 29 25 20 17 15 12
RH                     72 82 88 88 89 76 79 79 78 82 85 81 79 70 75 69 71 71 74
Wind dir                W  W  W  W NW NW NW NW SW  S  S  S  S  W NW NW NW NW NW
Wind spd                4  2  2  2  2  3  3  4  4  3  4  4  5  9 10  9  6  5  3
Clouds                 OV OV B2 B2 B2 B2 B2 B1 B2 OV OV OV OV OV B2 B2 B2 B2 B2
PoP 12hr                     20          70          50         100          60
QPF 12hr                      0        0.12        0.04        0.12        0.06
Snow 12hr                 00-00       00-00       00-00
Drizzle                             C  C  S  S  C  S
Frzg drzl                        C              C  S
Rain                    S                             D  D  D  D  L
Snow                                               C  D           L  L  C  C  C
Winter Weath                  Y  Y  Y  Y  Y  Y


Date           11/24/24  Mon 11/25/24  Tue 11/26/24  Wed 11/27/24  Thu 11/28/24
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          27      10    33      17    39      19    36      14    29
Temp          22 24 17   12 25 29 23   20 32 34 28   23 29 31 23   18 23 25
Dewpt         14 15 10    7 17 18 15   13 22 23 19   16 21 22 16   13 16 17
PWind dir        NW      SW     S      SW    SW      SW     W       W    NW
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B1 SC   B1 B1 B1 SC   SC SC SC SC   B1 B1 SC B1   B1 B1 B2
PoP 12hr         30       5     5      10     5      10    20      30    20
Snow           C                                            S  C    S     S

$$
MTZ326-221100-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
847 PM MST Thu Nov 21 2024

Date          Thu 11/21/24      Fri 11/22/24            Sat 11/23/24         Sun
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      28          49          29          45          18
Temp                   34 33 30 34 42 48 46 39 35 33 31 33 41 42 37 32 30 26 22
Dewpt                  29 29 28 31 38 37 35 32 30 28 26 28 32 30 30 28 26 23 20
RH                     82 85 92 89 86 65 65 76 82 82 81 82 70 62 75 85 85 88 92
Wind dir                E SE SE SE SE  S  S SE SE SE SE SE  S SW SW SW  W  W  W
Wind spd                6  5  5  5  3  5  6  8  6  6  8  6  8 10 10 10  8  5  4
Wind gust                                                     23
Clouds                 OV B2 B2 B2 OV B2 B2 B1 B1 OV B2 B2 OV OV OV OV B2 B1 B2
PoP 12hr                     30          30          40          80          80
QPF 12hr                      0           0           0        0.07        0.11
Snow 12hr                 00-00       00-00       00-00
Rain                    S              C  S  S  C  C  C  C  D  D  D  D
Snow                                                  C           D  D  C  C  C


Date           11/24/24  Mon 11/25/24  Tue 11/26/24  Wed 11/27/24  Thu 11/28/24
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          31       9    33      14    38      15    34      12    30
Temp          28 27 16   11 27 29 22   19 32 33 23   20 29 30 21   17 25 27
Dewpt         23 20 13    9 18 18 18   16 23 22 21   17 22 20 17   14 18 17
PWind dir         W       S     S      SE    SW       S    SW       S     W
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B1 SC   SC SC B1 B1   SC SC SC SC   B1 B1 SC B1   B1 B1 B1
PoP 12hr         30      10     5      20    10      20    20      30    20
Snow           C                   S    S        S    S  S  S  C    C  S  S

$$
MTZ330-221100-
West Yellowstone-Gallatin MT
44.69N 111.11W Elev. 6644 ft
847 PM MST Thu Nov 21 2024

Date          Thu 11/21/24      Fri 11/22/24            Sat 11/23/24         Sun
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      22          41          19          34          14
Temp                   28 26 23 24 37 40 36 29 24 21 20 24 31 33 30 26 24 21 17
Dewpt                  26 25 23 24 28 26 25 23 20 18 16 20 27 26 25 24 22 20 17
RH                     92 96100100 70 57 64 78 84 88 84 84 85 75 81 92 92 96100
Wind dir                S  S  S SE  S  S  S SE SE SE  S  S  S SW SW SW SW SW SW
Wind spd               10  5  3  3  6 11  6  5  5  4  9 11 16 19 18 18 10  5  3
Wind gust                                                  27 32 28 28
Clouds                 B2 OV OV B2 B1 SC B1 B1 B2 B2 B2 OV OV OV OV OV B2 B2 B2
PoP 12hr                     60          20          40         100         100
QPF 12hr                   0.01           0           0        0.23        0.11
Snow 12hr                     T       00-00       00-00
Snow                    C  L  S           C  C  C  C  D  D  D  D  D  D  L  L  C
Obvis                        PF PF                            BS BS BS


Date           11/24/24  Mon 11/25/24  Tue 11/26/24  Wed 11/27/24  Thu 11/28/24
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          27       4    26      12    29      10    29       7    25
Temp          24 24 10    5 21 23 16   14 26 27 16   12 24 25 13    8 22 23
Dewpt         18 16 10    5 15 16 16   13 21 20 16   11 19 17 11    7 17 15
PWind dir        SW       S     S      SW    SW      SW     W      SW    SW
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    OV B2 B1   B2 B2 B1 B2   B2 OV B2 B2   B2 B2 B1 B1   B2 OV B2
PoP 12hr         50      20    40      50    50      40    40      40    40
Snow           C  C  S    S  C  C  C    C  C  C  C    C  C  C  C    C  C  C

$$
MTZ328-221100-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
847 PM MST Thu Nov 21 2024

Date          Thu 11/21/24      Fri 11/22/24            Sat 11/23/24         Sun
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      28          48          30          42          19
Temp                   35 33 29 31 44 48 43 38 35 34 31 32 39 41 35 31 27 25 23
Dewpt                  30 28 27 28 34 33 32 28 28 27 24 26 30 29 28 25 21 19 17
RH                     82 82 92 88 68 56 65 67 75 75 75 78 70 62 75 78 78 78 77
Wind dir                S  S  S SE  S  S  S  S  S  S  S  S  S SW SW SW SW SW SW
Wind spd               11 10 10 10  9 11 10 10 10 10 11 12 13 13 10 10  9  6  6
Clouds                 B2 B2 B2 B1 SC B1 B2 B2 B2 OV OV OV OV OV B2 B1 B1 B1 B1
PoP 12hr                     20          10          40          80          50
QPF 12hr                      0           0        0.01        0.05        0.03
Snow 12hr                 00-00       00-00       00-00
Rain                                            C  C  L  L  D  D
Snow                                            C  C  L  L  D  D  C  C  C  C  S


Date           11/24/24  Mon 11/25/24  Tue 11/26/24  Wed 11/27/24  Thu 11/28/24
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          32       9    30      13    33      13    32      12    30
Temp          29 28 17   10 24 26 19   15 27 28 20   16 27 27 19   14 25 26
Dewpt         20 20 12    7 15 18 15   12 19 21 15   13 18 18 14   10 15 17
PWind dir        SW       S     S       S     S       S    SW       S     S
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 SC SC   SC B1 SC B1   SC SC SC SC   SC SC SC SC   B1 B1 B1
PoP 12hr         20       5     5      10     5      20    10      10     5
Snow           S                                      S

$$
MTZ305-221100-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
847 PM MST Thu Nov 21 2024

Date          Thu 11/21/24      Fri 11/22/24            Sat 11/23/24         Sun
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      15          28          17          29           5
Temp                   20 19 17 18 25 27 25 21 22 21 19 19 25 25 20 16 13 12  9
Dewpt                  17 16 14 16 20 23 23 20 21 19 17 18 22 21 18 14 11  9  6
RH                     88 88 88 92 81 85 92 96 96 92 92 96 88 84 92 92 91 87 87
Wind dir               NW NW NW NE NE  E  E  E  E  E  E  E  E  N NW NW  W  W  W
Wind spd                5  5  3  5 10 11 11 11  9  8  9  9  9 10 10 13 13 12 11
Clouds                 OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV
PoP 12hr                     50         100          70         100          70
QPF 12hr                   0.02        0.19        0.05        0.19        0.09
Snow 12hr                     T           2           T
Frzg drzl                                    S  S  L
Frzg rain                           S
Rain                                                  D
Snow                    C           S  D  L  L  L     D  D  D  D  L  L  C  C  C
Wind chill                                                             -2 -3 -6
Min chill                                                              -2    -6
Winter Storm                                          A  A  A  A  A  A  A  A
Winter Weath                  Y  Y  Y  Y  Y  Y


Date           11/24/24  Mon 11/25/24  Tue 11/26/24  Wed 11/27/24  Thu 11/28/24
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          15      -7    12      -1    25       5    23       1    19
Temp          11  9 -1   -6  7 10  6    6 20 20 13    9 18 17  8    6 14 13
Dewpt          7  5 -2   -6  4  7  4    4 15 15 11    7 14 13  6    5 10  9
PWind dir         W      NW    NE      SE    SW      SW     W       W     W
Wind char        GN      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    OV B1 B1   B1 B2 B1 B1   B1 B1 SC SC   B1 B1 SC B1   B2 B2 B1
PoP 12hr         30      20    20      20     5       5    10      20    20
Snow           C  S       S  S  S  S                           S    S  S  S

$$
MTZ314-221100-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
847 PM MST Thu Nov 21 2024

Date          Thu 11/21/24      Fri 11/22/24            Sat 11/23/24         Sun
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      20          36          20          40           8
Temp                   31 25 21 23 31 35 32 27 26 26 23 27 36 36 27 20 18 15 12
Dewpt                  25 21 19 21 25 28 26 24 24 23 20 24 27 28 24 17 15 12  8
RH                     78 84 92 92 78 75 78 88 92 88 88 88 69 72 88 88 88 88 84
Wind dir                W  W  W  N  E  E  E SE  E  E SE SE  S  W NW  W  W  W  W
Wind spd                4  4  3  2  6  8  5  5  5  5  5  5  6 10  9 12 12 11  9
Clouds                 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 OV OV OV OV B2 B2 B2 B2 B2
PoP 12hr                     10          70          30          80          70
QPF 12hr                      0        0.02           0        0.04        0.05
Snow 12hr                 00-00       00-00       00-00
Drizzle                                S  S
Frzg drzl                        S  S  S  S  S  S  S
Rain                                                  L  L  D  D
Snow                             S  C  C  S  S  C  C  L  L     D  L  L  C  C  C
Winter Weath                  Y  Y  Y  Y  Y  Y


Date           11/24/24  Mon 11/25/24  Tue 11/26/24  Wed 11/27/24  Thu 11/28/24
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          18       1    29      12    39      15    34       9    25
Temp          16 15  6    4 24 22 19   18 34 30 23   20 31 27 19   15 22 20
Dewpt         10 10  4    2 15 15 12   12 22 21 17   16 22 20 16   11 14 14
PWind dir         W       S     S      SW    SW      SW     W       W     W
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B1 SC   B1 B1 SC B1   SC SC FW SC   B1 B2 SC B1   B1 B2 B1
PoP 12hr         40      20    10      10    10      10    20      30    30
Snow           C  S       S                              S  S  C    C  C  S

$$
http://www.weather.gov/greatfalls