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Issued by NWS Great Falls, MT

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Point Forecast Matrices
National Weather Service Great Falls MT
232 PM MST Thu Dec 14 2017

MTZ012-151100-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
232 PM MST Thu Dec 14 2017

Date          Thu 12/14/17      Fri 12/15/17            Sat 12/16/17         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                      34          45          27          33          21
Temp             37 34 35 35 38 40 44 44 41 35 31 30 28 27 29 33 29 24 21 22 24
Dewpt            22 20 20 19 20 18 19 19 21 28 28 27 25 25 24 21 20 18 12 13 12
RH               54 56 54 52 48 41 36 36 44 75 88 88 88 92 81 61 69 77 68 68 60
Wind dir         SW SW SW SW SW SW SW SW SW NW NW NW NW NW NW  N  W SW SW SW SW
Wind spd         18 17 19 20 21 27 27 18 14 12 13 12 12 10 11 11  9 12 14 17 17
Wind gust                          39
Clouds           SC B1 SC B1 SC B1 B2 B2 OV OV OV OV OV OV OV B2 B1 SC FW FW SC
PoP 12hr                      0           5          70          50          10
QPF 12hr                      0           0        0.18        0.08           0
Snow 12hr                 00-00       00-00           1
Rain                                      L
Snow                                         L  L  L  C  C  C  C


Date           12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          38      31    40      27    41      29    35      14    29
Temp          31 34 34   31 40 35 31   27 37 41 40   29 34 23 17   15 26 29
Dewpt         15 17 20   18 32 23 22   22 25 28 28   14 20  6  6    8 11 14
PWind dir        SW      SW     W       W    SW       S     W      NW     W
Wind char        BZ      BZ    BZ      GN    GN      BZ    BZ      BZ    GN
Avg clouds    SC B1 B1   B2 B2 B2 B2   B2 B2 B2 B2   B2 B2 B2 B2   B2 B2 B1
PoP 12hr         10      30    50      40    30      30    50      40    20
Rain                                          C  S    C
Snow                 S    C  C  C  S    C  C  C  S    C  S  C  C    C  S  S

$$
MTZ010-151100-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
232 PM MST Thu Dec 14 2017

Date          Thu 12/14/17      Fri 12/15/17            Sat 12/16/17         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                      33          42          24          33          20
Temp             34 34 36 37 38 40 41 42 34 30 28 27 25 24 30 33 25 21 20 21 24
Dewpt            20 21 21 21 20 22 20 22 27 27 25 24 23 22 24 20 20 16 12 14 15
RH               56 58 54 52 48 48 42 44 75 88 88 88 92 92 78 58 81 81 71 74 68
Wind dir          W  W  W  W  W  W  W NW NW  N NW NW NW NW NW  W  W SW SW SW  W
Wind spd         16 17 20 24 28 26 23 14 14 14 13 13  9 10 12 13 12 14 14 19 18
Wind gust              32 36 43 41
Clouds           SC SC SC B1 B1 OV B2 B2 OV OV OV OV OV B2 B2 B1 SC FW FW FW SC
PoP 12hr                      0          40          70          40           5
QPF 12hr                      0        0.01        0.13        0.05           0
Snow 12hr                 00-00       00-00           2
Rain                                   C
Snow                                   C  L  L  C  C  C  C  S  S


Date           12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          38      25    36      23    35      22    32      12    29
Temp          35 31 34   25 36 29 27   23 34 30 26   23 31 18 17   13 28 19
Dewpt         21 19 25   20 27 18 18   19 26 26 19   13 22 15 11    9 16 12
PWind dir         W       W     W       W    SW       S     W      NW     W
Wind char        BZ      BZ    BZ      BZ    BZ      GN    BZ      BZ    BZ
Avg clouds    B1 B1 B1   B1 B2 B1 B1   B2 B2 B2 OV   B2 B2 B2 B2   B2 B1 SC
PoP 12hr         10      30    50      30    50      40    40      40    10
Snow                 S    C  C  C  S    C  C  C  C    C  C  S  C    S

$$
MTZ014-151100-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
232 PM MST Thu Dec 14 2017

Date          Thu 12/14/17      Fri 12/15/17            Sat 12/16/17         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          37          24          30          17
Temp             27 25 23 23 23 23 30 37 35 32 30 29 26 24 29 29 27 23 18 17 18
Dewpt            19 19 16 17 17 17 21 25 26 26 26 25 23 21 22 17 17 19 13 13 14
RH               71 78 74 77 77 77 69 61 69 78 85 85 88 88 75 60 65 84 80 84 84
Wind dir         SW SW SW SW SW SW SW  S SW SW  W  W  W  W  W NW  W  W SW SW SW
Wind spd          2  3  4  2  3  3  4  4  2  3  3  2  3  4  5  8  3  3  3  3  4
Clouds           B1 B1 B1 SC B1 B1 B1 B1 B2 B2 OV OV OV OV B2 B2 B1 SC SC FW SC
PoP 12hr                      0           0          60          40          10
QPF 12hr                      0           0        0.05        0.05           0
Snow 12hr                 00-00       00-00           1
Rain                                      C
Snow                                      C  C  L  L  C  C  C  C


Date           12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          30      24    39      26    39      26    31      11    21
Temp          25 27 24   26 37 37 30   26 34 39 32   26 31 24 14   11 15 21
Dewpt         15 15 17   20 26 22 24   21 23 24 26   20 20 11  8    7  4  9
PWind dir        SW      SW    SW       W    SW      SW    SW      NW    NW
Wind char        LT      LT    GN      GN    LT      LT    LT      LT    LT
Avg clouds    SC B1 B2   B2 B2 B2 B2   B2 B2 B2 B2   B2 B2 B2 B2   B2 B2 B1
PoP 12hr         10      30    40      30    30      30    40      40    20
Rain                                             S
Snow                 S    C  C  S  S    C  C  C  S    C  C  C  C    C  S  S

$$
MTZ055-151100-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
232 PM MST Thu Dec 14 2017

Date          Thu 12/14/17      Fri 12/15/17            Sat 12/16/17         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                      16          36          21          29           9
Temp             27 20 19 17 16 17 28 36 32 27 27 26 25 21 26 29 25 18 13 11  9
Dewpt            18 13 12 10 10 10 17 22 20 19 20 22 21 18 19 18 18 15  9  9  6
RH               68 74 74 73 77 73 63 56 61 71 74 85 84 88 74 63 74 88 84 91 87
Wind dir          S  S  S  S  S  S SW SW  S SW SW SW  W  W  W NW NW  W SW SW SW
Wind spd          3  3  3  3  3  2  3  5  4  4  5  3  4  3  3  4  4  2  3  3  5
Clouds           B1 B1 SC SC SC B1 SC B1 B2 B2 OV OV OV OV OV B2 B2 B1 SC SC SC
PoP 12hr                      0           0          70          50          30
QPF 12hr                      0           0        0.16        0.07        0.01
Snow 12hr                 00-00       00-00           2
Snow                                      C  C  L  L  C  C  C  C  C  C
Obvis                                                                  PF PF
Wind chill                                                                   -1
Min chill                                                                    -1
Freezing Fog


Date           12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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      18    35      22    38      23    33       8    19
Temp          20 25 18   24 33 35 29   22 34 38 29   23 33 24 11    8 14 18
Dewpt          8 14 10   18 21 21 21   18 25 23 21   18 21 13  3    4  3  6
PWind dir        SW      SW    SW      SW    SW      SW    SW      NW     W
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    SC B1 B1   B2 B2 B2 B2   B2 OV B2 B2   B2 B2 B2 B2   B2 B2 B1
PoP 12hr         10      20    40      50    40      30    70      40    30
Rain                                          C  S
Snow                 S    S  C  C  C    C  C  C  S    C  S  L  C    C  C  S

$$
MTZ055-151100-
West Yellowstone-Gallatin MT
44.66N 111.11W Elev. 6700 ft
232 PM MST Thu Dec 14 2017

Date          Thu 12/14/17      Fri 12/15/17            Sat 12/16/17         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                      10          25          16          24           1
Temp             23 17 13 11 10 12 19 25 22 20 20 17 17 16 19 24 20 13  7  2  2
Dewpt            17 12  9  7  6  9 14 17 16 14 16 15 15 15 15 16 15  9  4  1  0
RH               77 80 84 83 83 87 80 71 77 77 84 92 92 96 84 71 81 84 87 95 91
Wind dir         SW  S  S  S  S  S  S SW  S  S SW SW SW  W NW NW NW  N  N  N SW
Wind spd          3  3  2  3  2  3  4  5  4  3  3  4  3  4  4  4  4  3  3  3  2
Clouds           SC SC SC SC SC SC SC B1 B2 B2 OV OV OV OV OV OV B2 B1 SC SC SC
PoP 12hr                      0           0          80          50          20
QPF 12hr                      0           0        0.09        0.07        0.01
Snow 12hr                 00-00       00-00           2
Snow                                      C  C  D  D  C  C  C  C  S  S
Obvis                  PF PF PF PF                                     PF PF PF
Wind chill                                                                -6
Min chill                                                                    -6


Date           12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          20       7    23      15    28      17    27       3    15
Temp          13 16  7   10 15 23 17   16 23 28 19   18 23 25 10    3  6 14
Dewpt          7 11  4    8 10 15 14   15 18 19 15   16 19 15  5    2  1  5
PWind dir        SW       S    SW      SW    SW      SW    SW       W    NW
Wind char        LT      LT    LT      LT    LT      GN    GN      LT    LT
Avg clouds    SC SC B1   B1 B2 B2 OV   OV OV B2 B2   B2 B2 B2 B2   B2 B2 B1
PoP 12hr         20      20    30      40    40      30    60      50    20
Snow              S  S    S  C  C  C    C  C  C  C    C  C  L  C    S  S

$$
MTZ008-151100-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
232 PM MST Thu Dec 14 2017

Date          Thu 12/14/17      Fri 12/15/17            Sat 12/16/17         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          37          22          30          10
Temp             27 22 21 20 21 21 30 37 31 28 28 27 26 22 27 29 22 19 11 10 10
Dewpt            16 11  9  8 10 11 17 21 17 16 18 21 20 17 15 12 11 11  5  5  4
RH               63 62 59 59 62 65 58 52 56 60 66 78 78 81 60 48 62 70 76 80 76
Wind dir          S  S  S  S  S  S  S  S  S  S  S SW  W  W NW NW NW NW  W  S SW
Wind spd          4  8  8 10 12 12 11 10 10  9  9  9  9  8  9  8  6  8  6  9  9
Clouds           SC SC FW SC SC SC SC B1 B1 B2 OV B2 B2 B2 B1 B2 B1 B1 SC FW SC
PoP 12hr                      0           0          40          30          10
QPF 12hr                      0           0        0.02        0.02           0
Snow 12hr                 00-00       00-00           T
Snow                                      S  S  C  C  C  C  S  S
Wind chill                                                                -3 -3
Min chill                                                                    -3


Date           12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          30      19    36      22    39      25    35       8    19
Temp          21 27 19   24 34 35 25   24 35 39 31   25 35 25 12    9 19 14
Dewpt          7 14  8   16 18 19 15   18 22 22 22   18 20  9  3    4  6  2
PWind dir        SW       S     S       S     S       S     S      NW     S
Wind char        GN      GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    SC B1 B1   B1 B2 B2 B2   B2 B2 B2 B2   B2 B2 B2 B2   B2 B2 B1
PoP 12hr         10      20    20      30    20      30    70      30    20
Snow                 S    S  S  S  S    C  S  S  S    C  S  L  C    C  S  S

$$
MTZ011-151100-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
232 PM MST Thu Dec 14 2017

Date          Thu 12/14/17      Fri 12/15/17            Sat 12/16/17         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                      30          42          25          36          20
Temp             34 32 31 30 32 32 39 42 36 33 31 29 28 25 33 36 29 23 20 21 22
Dewpt            24 23 22 21 21 21 22 25 29 31 29 25 25 22 25 22 21 18 15 16 15
RH               66 69 69 69 63 63 50 50 75 92 92 85 88 88 72 56 72 81 81 81 74
Wind dir         SW SW SW SW SW SW  W  W  W NW  W NW  W  W  W  W  W SW SW SW SW
Wind spd          6  9 12 14 16 16 19 19 11  9  9 11 10  9 11 11  9  9  8 11 11
Clouds           SC B1 B1 B1 SC B1 B1 B2 OV OV OV B2 B2 B2 B2 B1 SC SC FW FW SC
PoP 12hr                      0          40          60          20           5
QPF 12hr                      0        0.01        0.10        0.01           0
Snow 12hr                 00-00       00-00           1
Rain                                   C  L  L
Snow                                      L  L  C  C  S  S


Date           12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          39      26    38      21    36      23    35      12    31
Temp          33 36 29   27 38 34 24   22 34 34 25   25 35 26 13   17 29 29
Dewpt         19 23 23   23 28 25 19   17 22 24 21   16 21 15  5   12 16 16
PWind dir        SW      SW     W       W     S      SE    SW      NW     W
Wind char        GN      GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    SC B1 B1   B2 B2 B2 B1   B1 B1 B2 OV   OV B2 B2 B2   B2 B2 B1
PoP 12hr         10      40    40      10    30      50    40      40    20
Snow                 S    C  C  C          S  C  C    C  S  C  C    S     S

$$
MTZ051-151100-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
232 PM MST Thu Dec 14 2017

Date          Thu 12/14/17      Fri 12/15/17            Sat 12/16/17         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                      31          47          25          30          17
Temp             34 31 31 33 34 36 45 47 42 34 31 29 27 25 25 30 27 22 17 17 17
Dewpt            22 16 18 19 19 17 15 17 19 27 29 28 26 23 20 19 19 19 12 10  9
RH               61 53 58 56 54 45 29 30 39 75 92 96 96 92 81 63 71 88 80 73 70
Wind dir         SW SW SW SW SW SW  W  W  W NW NW NW NW NW NW NW NW  W SW SW SW
Wind spd          5  6  6 10 11 13 13 12 11  9  9 11 10 10  9  6  6  6  4  6  9
Clouds           SC SC B1 SC SC B1 FW B1 B2 B2 OV OV OV OV OV B2 B2 B1 FW FW FW
PoP 12hr                      0           0          70          40          20
QPF 12hr                      0           0        0.08        0.03        0.01
Snow 12hr                 00-00       00-00           1
Rain                                      C
Snow                                         C  L  L  C  C  C  C  S  S


Date           12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17  Thu 12/21/17
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          36      27    36      23    38      27    37       9    25
Temp          31 30 29   35 35 30 24   24 35 38 32   28 37 25 12   11 23 23
Dewpt         16 18 18   26 26 23 21   19 23 25 27   18 21 15  8    6  9 13
PWind dir        SW      SW     W       W    SW      SW    SW      NW     W
Wind char        GN      GN    BZ      GN    GN      GN    GN      GN    GN
Avg clouds    FW SC B1   B1 B2 B2 B2   B1 B2 B2 OV   B2 B2 B2 B2   B2 B2 B1
PoP 12hr         10      20    40      30    30      30    50      40    20
Rain                                             C       C
Snow                      S  C  C  C    C  C  C  C    C  C  C  C    C  S

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



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