Point Forecast Matrices
Issued by NWS Great Falls, MT

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Point Forecast Matrices
National Weather Service Great Falls MT
225 PM MST Fri Feb 15 2019

MTZ012-161100-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
225 PM MST Fri Feb 15 2019

Date          Fri 02/15/19      Sat 02/16/19            Sun 02/17/19         Mon
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                      -1           6         -10          -3         -17
Temp              7  4  4  5  2 -1  3  6  2 -1 -3 -5 -8-10 -5 -3 -7-10-12-14-15
Dewpt             2  0 -1  0 -2 -5 -2 -1 -4 -7 -9-12-14-16-11-12-14-16-19-21-22
RH               79 83 79 79 83 83 79 72 75 75 75 71 74 74 74 64 71 74 70 70 69
Wind dir         NE NE  N NW NW NW NW NW  N NW NW  W  W SW NW NW  N  N NW  W  W
Wind spd          8  5 10 12 10 11 11 11  8  6  8  8  9 10  9  9  8  4  4  4  5
Clouds           B1 OV OV OV OV OV OV OV OV B2 OV B2 OV OV B2 OV B2 B2 B2 B2 B2
PoP 12hr                     90          50          40          20          10
QPF 12hr                   0.12        0.02        0.02           0           0
Snow 12hr                     2           T           T
Snow              S  C  D  D  C  C  C  C  C  C  C  C  S  S
Wind chill       -6 -7-11-12-14-18-13-10-12-14-18-20-25-29-21-19-23-22-24-26-29
Min chill        -6   -11   -15   -18   -12   -18   -25   -29   -23   -24   -29
Winter Weath      Y  Y  Y  Y


Date           02/18/19  Tue 02/19/19  Wed 02/20/19  Thu 02/21/19  Fri 02/22/19
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           0      -6    21       8    22       4    13      -5    17
Temp          -7 -2 -6   -1 14 18 12    9 18 17 12    8  9  7 -1   -4  9 14
Dewpt        -14-11-15  -11  4  6  0    0  9  9  6    2  1 -2-10  -13 -2  2
PWind dir        SW       S    SW      SW    SW       N     N       W     S
Wind char        LT      GN    GN      GN    GN      LT    GN      LT    GN
Avg clouds    B1 SC FW   FW SC B1 B1   B1 B2 B2 B2   OV OV B2 B1   B1 SC SC
PoP 12hr          0       0     5       5    10      20    30      10     5
Snow                                             S    S  C  S

$$
MTZ010-161100-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
225 PM MST Fri Feb 15 2019

Date          Fri 02/15/19      Sat 02/16/19            Sun 02/17/19         Mon
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                      -6           2          -9          -2         -18
Temp              3 -2 -1 -2 -4 -6 -2  2  0 -4 -5 -8 -8 -9 -4 -2 -4-11-13-14-17
Dewpt            -2 -6 -5 -6 -9-10 -8 -5 -7-10-12-15-15-16-12-11-11-16-19-21-24
RH               79 82 83 82 78 82 75 72 71 75 71 70 70 70 67 64 71 78 73 70 69
Wind dir          E  E  N  N NW NW  N  N NW NW NW NW NW NW  N  N  N  N NW NW NW
Wind spd          8 11 12 16 10 10 13 14 16 12 14 17 17 14 13 13 10  6  5  5  5
Clouds           B2 B2 OV OV OV OV OV OV OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B1
PoP 12hr                     70          70          30           5           5
QPF 12hr                   0.02        0.02        0.01           0           0
Snow 12hr                     T           1           T
Snow              C  C  C  L  C  C  L  C  C  C  S  S
Obvis                     BS
Wind chill      -11-20-19-23-21-24-21-17-20-23-26-31-31-31-24-21-21-26-27-28-32
Min chill       -11   -20   -23   -24   -20   -26   -31   -32   -22   -27   -32
Winter Weath      Y  Y  Y  Y


Date           02/18/19  Tue 02/19/19  Wed 02/20/19  Thu 02/21/19  Fri 02/22/19
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           1      -9    19       4    20      -1    10      -8    14
Temp          -6 -2 -7    1 14 13  4    6 15 15  7    2  6  4 -6   -8  5 10
Dewpt        -14-11-15   -7  5  4 -5   -1  8  9  2   -4 -1 -4-13  -15 -4  2
PWind dir        SW       S     W       W    NW       N     N      SE     S
Wind char        LT      GN    GN      GN    GN      GN    GN      LT    GN
Avg clouds    SC FW FW   SC B1 B1 B1   B2 B2 B2 B2   OV B2 B2 B1   B1 SC SC
PoP 12hr          5       5     5      10    20      20    20       5     5
Snow                                          S  S    S  S

$$
MTZ014-161100-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
225 PM MST Fri Feb 15 2019

Date          Fri 02/15/19      Sat 02/16/19            Sun 02/17/19         Mon
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                      13          22          -5           3         -12
Temp             26 21 20 18 16 13 20 22 16  9  3 -1 -4 -5 -1  3  2 -3 -6 -9-11
Dewpt            19 16 16 12 10  9 13 14  9  3 -3 -8-11-12 -9 -6 -6-10-12-15-17
RH               74 81 84 77 77 84 74 71 73 76 75 71 71 71 68 65 68 71 74 74 74
Wind dir          S SW SW  W  W  W  W  N  N NW NW NW NW NW NW  N  N  N  N  N  N
Wind spd          6  5  5  3 10 10  2  4  6  8  9  8 12  8  9  8  6  4  4  2  2
Wind gust              17
Clouds           B2 OV B2 B2 B2 B2 B2 B1 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2
PoP 12hr                     70          30          20          10           5
QPF 12hr                   0.03           0           0           0           0
Snow 12hr                     1       00-00       00-00
Snow              L  C  C  S  C  S  S  C  S  S  S  S
Wind chill                                  -3-12-15-23-20-16-11-11-13-17
Min chill                                     -12   -23   -23   -14   -17   -17
Winter Weath      Y  Y


Date           02/18/19  Tue 02/19/19  Wed 02/20/19  Thu 02/21/19  Fri 02/22/19
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           4      -6    20       3    22       3    14      -5    18
Temp          -4  3 -4   -5 11 19  8    4 16 21 11    4  8 12  1   -5  7 17
Dewpt        -12 -7-11  -12  1  7  0   -3  8 12  5    0  1  4 -5  -11 -1  6
PWind dir         W       S    SW      SW     S       N     N       N     S
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 SC FW   FW SC SC B1   B2 B2 B2 B2   B2 B2 B2 B1   B1 SC SC
PoP 12hr          0       0     5       5    20      20    20       5     5
Snow                                          S  S    S  S

$$
MTZ055-161100-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
225 PM MST Fri Feb 15 2019

Date          Fri 02/15/19      Sat 02/16/19            Sun 02/17/19         Mon
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          28           0           7         -13
Temp             34 27 24 20 17 16 25 28 25 18 12  7  3  0  4  7  5 -2 -4 -9-11
Dewpt            22 20 18 16 13 12 15 13 15 12  8  4 -1 -4 -4 -2 -3 -7 -9-14-16
RH               61 74 77 84 84 84 65 53 65 77 84 87 83 83 68 66 69 79 78 78 78
Wind dir         SW SW SW SW SW SW  W  W  W SW  W  W  W  W  W  W  N  N NE  N  W
Wind spd          8  5  5  4  4  3  2  3  5  4  4  6  4  5  6  5  5  3  2  2  2
Clouds           B1 OV B2 B2 B2 B1 SC SC B2 B2 B1 B2 B2 OV B2 B2 B2 B2 B2 B2 B2
PoP 12hr                     50          30          20          20          10
QPF 12hr                   0.04        0.01        0.01           0           0
Snow 12hr                     1           T           T
Snow              C  C  C  S  C  S  S  S  S  S  S  S  S  S
Wind chill                                        -5 -6-12 -8 -3 -6-10
Min chill                                            -7   -12    -6   -11   -11
Winter Weath      Y  Y


Date           02/18/19  Tue 02/19/19  Wed 02/20/19  Thu 02/21/19  Fri 02/22/19
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           3      -7    20       1    22       3    19      -4    19
Temp          -3  2 -4   -7 12 18  8    2 15 20  9    4 13 17  4   -4 11 17
Dewpt        -11 -8-10  -12  0  6  0   -5  4  9  4    0  4  7 -1   -9  0  5
PWind dir        NW      SW    SW      SW     W      SE     N      NE    SW
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B1 SC   FW FW SC B1   B2 B2 B2 B2   B2 B2 B2 B2   B1 B1 SC
PoP 12hr          5       5     5       5    10      10    20      10     5
Snow                                                     S  S

$$
MTZ055-161100-
West Yellowstone-Gallatin MT
44.66N 111.11W Elev. 6700 ft
225 PM MST Fri Feb 15 2019

Date          Fri 02/15/19      Sat 02/16/19            Sun 02/17/19         Mon
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                       8          21          -2          20         -12
Temp             27 22 17 15 10  8 17 21 16  9  5  2 -1  0 14 20 16  3 -4 -6-10
Dewpt            24 19 15 12  7  6 10 12 11  6  2 -1 -4 -3  6  9  8 -1 -8 -9-15
RH               88 88 92 88 87 91 73 68 80 87 87 87 87 87 70 62 70 83 82 86 78
Wind dir         SW SW SW SW SW SW SW SW SW  S SW  S  S NE NW  N  N  N NE NE NE
Wind spd          9  5  5  4  4  3  4  6  6  4  4  4  4  1  4  2  6  2  1  1  1
Wind gust        21 17
Clouds           B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1
PoP 12hr                     80          50          30          20          10
QPF 12hr                   0.08        0.01        0.02           0           0
Snow 12hr                     1           T           T
Snow              D  L  C  C  C  C  C  C  C  C  C  C  S  S  S  S
Wind chill                                     -4 -8-11
Min chill                                      -4   -11   -10          -4   -10
Winter Storm      W  W


Date           02/18/19  Tue 02/19/19  Wed 02/20/19  Thu 02/21/19  Fri 02/22/19
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          17      -9    17      -3    18       0    22      -5    21
Temp           8 14 -1   -7 10 13  2   -1 11 14  5    2 15 18  2   -3 12 16
Dewpt          0  6 -6  -13  0  4 -3   -5  4  9  1   -2  6 10 -3   -8  3  7
PWind dir         W       W    SW      SW    SW       S     N      NE     S
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B1 B1   SC SC B1 B1   B2 OV OV B2   B2 B2 B2 B2   B1 B1 B1
PoP 12hr         20       5    20      20    40      20    30      20    20
Snow              S             S  S    S  C  C  S    S  C  C  S    S  S  S

$$
MTZ008-161100-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
225 PM MST Fri Feb 15 2019

Date          Fri 02/15/19      Sat 02/16/19            Sun 02/17/19         Mon
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          24           1          11          -9
Temp             31 23 19 18 16 12 19 24 22 12  9  6  5  1  6 11  8  0 -3 -5 -8
Dewpt            21 15 12 11 10  5  9  7  9  5  3  1  0 -4 -3 -2 -3 -7-10-11-14
RH               66 71 74 73 77 73 64 47 57 73 76 79 79 79 66 55 60 71 71 74 74
Wind dir         SW SW SW SW SW SW SW SW SW SE  E  E NE NE NE NE NE NE NE NE  N
Wind spd         12  9  9  9  8  9  8  8  8  6  9  8  8  6  8  8 10  5  5  5  3
Clouds           B2 B2 B1 B2 B1 SC SC B1 B1 FW B1 B1 B2 B2 B2 B1 B1 B1 B2 B2 B2
PoP 12hr                     40          20          10           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                     T       00-00       00-00
Snow              C  S  S           S  S
Wind chill                                     -4 -7 -8-12 -7 -1 -6-12-15-17-17
Min chill                                      -4    -8   -12    -6   -15   -17
Winter Weath      Y  Y


Date           02/18/19  Tue 02/19/19  Wed 02/20/19  Thu 02/21/19  Fri 02/22/19
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           5      -5    20       1    20       4    19      -2    20
Temp          -3  4 -3   -5 10 18  7    3 12 17  9    6 12 15  4    0 11 18
Dewpt        -13 -8-11  -12 -3  3 -2   -4  1  5  2    0  2  4 -3   -7  0  5
PWind dir         N       W    SW       S     S       S    NE       E    SW
Wind char        LT      LT    LT      GN    GN      LT    LT      LT    LT
Avg clouds    B2 B1 SC   FW FW SC B1   B2 B2 B2 B2   B2 B2 B2 B1   B1 B1 SC
PoP 12hr          5       5     0       0    10      20    20       5     0
Snow                                             S       S  S

$$
MTZ011-161100-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
225 PM MST Fri Feb 15 2019

Date          Fri 02/15/19      Sat 02/16/19            Sun 02/17/19         Mon
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                      -5           5         -14          -1         -19
Temp              1 -4 -5 -2 -4 -5  1  5  0 -6 -8-11-12-14 -7 -1 -5-10-13-15-16
Dewpt            -2 -8 -8 -6 -7 -9 -4 -1 -6-12-13-16-18-19-13 -8-11-15-18-20-21
RH               87 82 86 82 86 82 79 76 75 74 78 78 74 77 74 71 74 78 77 77 77
Wind dir         NE NE NE NW NW  W NW NW NW  W  W  W  W SW  W NW  W NW  W  W  W
Wind spd          8  6  6 11  6  6 11 12 10  8 10 11 12 12 12 11 10  5  4  4  4
Clouds           B1 B1 B2 OV OV OV B2 B2 B2 SC OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2
PoP 12hr                     80          60          20          10          10
QPF 12hr                   0.04        0.04           0           0           0
Snow 12hr                     1           1       00-00
Snow              C  C  C  L  C  C  C  S  S  S  S  S
Wind chill      -13-18-19-20-18-19-16-12-16-21-26-31-33-36-27-18-22-23-25-27-29
Min chill       -13   -19   -21   -19   -16   -26   -33   -36   -23   -25   -29
Winter Weath      Y  Y  Y  Y


Date           02/18/19  Tue 02/19/19  Wed 02/20/19  Thu 02/21/19  Fri 02/22/19
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          -3     -18    14       0    18      -1    11     -10    10
Temp         -10 -7-18  -15  4 12  3    1 12 14  7    4  7  7 -3   -9  3  5
Dewpt        -15-13-24  -21 -2  6 -2   -4  6  9  3    0  1  1 -8  -14 -3 -2
PWind dir         W       S    SW      SW     W      NW     N       E     S
Wind char        LT      LT    GN      LT    LT      LT    LT      LT    LT
Avg clouds    B1 SC FW   FW SC B1 B1   B1 B2 B2 B1   B2 B2 B1 B1   B1 B1 SC
PoP 12hr          5       0     5      10    10      10    10       5     5

$$
MTZ051-161100-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
225 PM MST Fri Feb 15 2019

Date          Fri 02/15/19      Sat 02/16/19            Sun 02/17/19         Mon
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                       2          13         -10          -2         -16
Temp             15 10  9  8  4  2  9 13  6  0 -6 -6 -8-10 -5 -2 -5-12-13-13-16
Dewpt            10  7  5  4  1 -1  4  7  1 -4-10-11-13-15-11 -9-12-16-18-19-20
RH               80 87 83 83 87 87 80 76 79 83 82 78 78 78 74 71 71 82 77 73 81
Wind dir          E SE  W NW NW  W NW NW NW  W  W  W  W  W  W NW  W NW NW  W  W
Wind spd          6  6  6 10  9  9  9 11  9  8  8  9  8  8  9 10  8  6  4  4  4
Clouds           SC B1 B2 OV OV OV B2 OV OV OV OV B2 OV OV OV B2 B2 B2 B2 B2 B2
PoP 12hr                     80          60          30          20          10
QPF 12hr                   0.05        0.04        0.01           0           0
Snow 12hr                     1           1           T
Snow              S  C  L  L  C  L  C  C  C  C  S  S  S  S
Wind chill          -1 -2 -6-10-13 -4 -1 -8-14-21-23-24-26-21-19-20-27-25-25-29
Min chill              -3   -11   -13    -8   -21   -24   -26   -20   -27   -29
Winter Weath      Y  Y  Y  Y


Date           02/18/19  Tue 02/19/19  Wed 02/20/19  Thu 02/21/19  Fri 02/22/19
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           0     -10    22       4    23       4    14      -4    18
Temp          -6 -4-10   -5 15 16  4    5 19 15  7    5  8  9 -1   -4 12 15
Dewpt        -13-12-17  -14  4  5 -4   -3 10  8  2    1  3  2 -6  -11  2  4
PWind dir         W       S    SW      SW     W      NW    NW       W     S
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 SC FW   FW FW SC B1   B1 B1 B2 B2   B2 B2 B2 B2   B1 B1 SC
PoP 12hr          5       0     5       5    10      20    30      10     5
Snow                                                  S  C  S

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




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