Point Forecast Matrices
Issued by NWS Des Moines, IA

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Point Forecast Matrices
National Weather Service Des Moines IA
1053 AM CST Sun Feb 18 2018

IAZ060-182200-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
1053 AM CST Sun Feb 18 2018

Date             Sun 02/18/18            Mon 02/19/18            Tue 02/20/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      54          39          44          27          30
Temp                   47 52 47 41 39 42 44 42 40 37 34 31 30 29 27 29 29 30 25
Dewpt                  32 32 33 34 35 36 39 38 36 33 29 27 26 25 23 24 22 20 16
RH                     56 46 58 76 85 79 82 86 85 85 82 85 85 85 85 81 75 66 68
Wind dir                S  S  S  S SE SE SE  N  N  N  N  N  N  N  N  N NW NW NW
Wind spd               17 16  9  8  6  6  8  8  9  9 10  8  6  8 10 10 12 13 14
Wind gust                 26
Clouds                 SC FW SC B1 B2 OV OV OV OV OV OV OV OV OV OV OV OV B2 B2
PoP 12hr                      0          70          80          80          60
QPF 12hr                      0        0.06        0.10        0.15        0.06
Snow 12hr                 00-00       00-00       00-00
Frzg rain                                             S  L  D  D  L  L  S  S
Rain                                C  L  D  D  C  C  L
Tstms                                     S  S
Wind chill                                  36    31 27 24 23 21 17 20 19 19 13
Min chill              33          34    34    33    25    22    17    16    11
Wind                    Y
Winter Storm                                          A  A  A  A  A  A


Date               Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            11    26      16    38      25    43      28    44
Temp          17   11 23 25 20   18 36 35 26   28 41 41 32   29 41 42
Dewpt          9    5  6  8  9    9 15 18 20   24 30 30 29   26 30 27
PWind dir          NW     N      NE     E      SE    SE       N    NW
Wind char          GN    GN      LT    LT      LT    LT      GN    GN
Avg clouds    B1   SC SC SC SC   SC SC SC B1   B1 B2 B2 B2   B2 B1 SC
PoP 12hr            5     0       5     0      40    60      50    10
Rain                                               L  C  C
Snow                                            C  L     C    C

$$
IAZ039-182200-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
1053 AM CST Sun Feb 18 2018

Date             Sun 02/18/18            Mon 02/19/18            Tue 02/20/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      45          34          39          27          29
Temp                   37 43 39 36 34 34 36 35 39 37 34 32 30 30 27 28 28 29 23
Dewpt                  30 33 32 31 31 31 33 34 35 33 31 29 27 28 26 25 24 22 18
RH                     75 67 76 82 89 89 89 96 85 85 89 88 88 92 96 88 85 75 81
Wind dir                S  S  S  S  S  E  E NE NE  N  N  N  N  N  N  N  N NW NW
Wind spd               19 18 12 10  8  5  8  8  9 10  9  9  8  6  9  9 10 12 13
Wind gust              29 28
Clouds                 SC FW FW SC B2 B2 OV OV OV OV OV OV OV OV OV OV OV B2 B2
PoP 12hr                      0          60          90          80          70
QPF 12hr                      0        0.02        0.19        0.17        0.08
Snow 12hr                 00-00       00-00       00-00
Frzg rain                                                C  D  D  L  L  S  S
Rain                                   C  D  D  C  C  C
Wind chill             26 34 32 29 27    30 29 32 29 26 24 22 23 18 19 19 19 11
Min chill              16    29    27    27    27    25    22    17    17     9
Wind                    Y
Winter Storm                                          A  A  A  A  A  A


Date               Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max             9    22      12    34      20    39      24    39
Temp          15    9 20 20 16   13 31 32 22   23 37 37 29   24 36 38
Dewpt         10    6  7  9  9    8 15 17 16   20 28 29 28   24 29 28
PWind dir          NW    NW       N     E      SE    SE       N    NW
Wind char          GN    GN      LT    LT      LT    GN      GN    GN
Avg clouds    B2   SC SC FW SC   SC FW FW SC   B1 B2 B2 B2   B2 B1 B1
PoP 12hr            5     0      10     0      20    50      50    20
Rain                                               C  C  C          S
Snow                                            S  C     C    C  S  S

$$
IAZ048-182200-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
1053 AM CST Sun Feb 18 2018

Date             Sun 02/18/18            Mon 02/19/18            Tue 02/20/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      50          35          37          25          27
Temp                   43 48 43 37 36 36 36 37 36 34 31 29 28 28 25 26 26 27 22
Dewpt                  32 34 34 33 33 33 34 33 33 30 27 25 24 24 22 21 20 19 15
RH                     65 58 70 85 89 89 92 85 89 85 85 85 85 85 88 81 78 71 74
Wind dir                S  S  S  S SE  E NE  N  N  N  N  N  N  N  N  N NW NW NW
Wind spd               18 16 10  8  6  6  8 10 11 10  9 10  9  9 12 11 12 14 14
Clouds                 FW FW FW SC B2 OV OV OV OV OV OV OV OV OV OV OV OV B2 B2
PoP 12hr                      0          70          80          80          50
QPF 12hr                      0        0.06        0.08        0.13        0.03
Snow 12hr                 00-00       00-00       00-00
Frzg rain                                             C  C  D  D  C  C
Rain                                S  L  D  D  C  C
Wind chill             35    37    30 30 30 29 28 26 23 20 19 19 14 16 15 15  9
Min chill              27    37    28    28    27    22    18    14    14     8
Wind                    Y
Winter Storm                                          A  A  A  A  A  A


Date               Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max             9    22      13    35      22    40      26    41
Temp          15    9 20 21 17   15 33 32 24   25 38 38 30   26 37 40
Dewpt          8    4  5  8  8    8 14 17 18   22 29 29 29   25 29 27
PWind dir          NW     N      NE     E      SE    SE       N    NW
Wind char          GN    GN      LT    LT      LT    GN      GN    GN
Avg clouds    B1   SC FW SC SC   SC FW SC B1   B1 B2 B2 B2   B2 B1 B1
PoP 12hr            0     0       5     0      40    50      50    20
Rain                                               C  C  C          S
Snow                                            C  C     C    C

$$
IAZ004-182200-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
1053 AM CST Sun Feb 18 2018

Date             Sun 02/18/18            Mon 02/19/18            Tue 02/20/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      44          19          21          13          16
Temp                   39 44 38 31 26 24 20 20 20 21 20 18 17 16 13 14 16 16 14
Dewpt                  31 34 31 27 21 19 18 15 16 15 15 14 13 12 10  9 10  9  7
RH                     73 68 76 85 81 81 92 81 84 77 81 84 84 84 87 80 77 73 73
Wind dir                S  S SW  N  N  N  N  N  N  N  N  N  N  N  N  N  N NW NW
Wind spd               27 18 11 12 16 18 18 20 19 18 17 14 13 14 14 14 16 16 16
Wind gust                                   31
Clouds                 SC SC SC B1 B2 OV OV OV OV OV OV OV OV OV OV B2 B2 B2 B2
PoP 12hr                      0          60          70          60          30
QPF 12hr                      0        0.01        0.07        0.09           0
Snow 12hr                 00-00       00-00           T
Frzg rain                           S  C  L  L  S  S  S  S  C  S
Snow                                      S  L  C  C  C  C  L  L  C  C  S  S
Wind chill             28 36 31 21 13 10  5  4  4  6  6  4  3  1 -3 -1  1  1 -2
Min chill              20    31    13     4     3     4     1    -3    -3    -3
Wind                    Y
Winter Weath                        Y  Y  Y  Y  Y


Date               Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max             0    16       2    29      15    34      19    34
Temp           6    0 14 14  4    6 26 26 18   17 31 31 22   21 33 31
Dewpt          1   -4  3  3 -2    0 11 13 13   15 24 25 22   19 24 22
PWind dir          NW     W       S     S       S     E      NW     W
Wind char          GN    LT      LT    GN      GN    GN      GN    GN
Avg clouds    SC   FW FW FW FW   FW FW SC SC   B1 B1 B2 B1   B1 B1 SC
PoP 12hr            5     0       0     0      30    50      20    30
Snow                                            C  C  C  S    S  C  C

$$
IAZ035-182200-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
1053 AM CST Sun Feb 18 2018

Date             Sun 02/18/18            Mon 02/19/18            Tue 02/20/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      48          28          29          19          22
Temp                   43 47 42 38 34 31 28 28 28 27 26 23 23 22 19 20 21 21 17
Dewpt                  33 35 33 32 29 26 27 25 24 23 22 20 19 18 16 16 15 15 11
RH                     67 63 70 79 82 81 96 88 85 85 85 88 84 84 88 84 77 77 77
Wind dir                S  S  S  S NE NE NE  N  N  N  N  N  N  N  N  N  N NW NW
Wind spd               23 18 10  8  8 11 13 14 14 13 11 11 10 11 11 12 13 14 13
Clouds                 SC FW FW B1 B2 OV OV OV OV OV OV OV OV OV OV B2 OV B2 B2
PoP 12hr                      0          70          80          60          30
QPF 12hr                      0        0.04        0.05        0.09           0
Snow 12hr                 00-00       00-00       00-00
Frzg rain                              L  D  D  C  C  C  C  L  L  C  C
Rain                                S
Sleet                                                          S
Wind chill             34    36 32 27 22 17 17 16 15 15 12 12 11  7  8  8  8  3
Min chill              25    35    27    17    15    14    11     7     6     3
Wind                    Y
Winter Weath                        Y  Y  Y  Y  Y


Date               Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max             4    20       7    32      19    37      23    38
Temp          11    4 17 18 11    9 29 30 21   21 35 35 28   24 37 34
Dewpt          5    1  4  6  4    4 13 15 15   19 28 28 27   22 27 25
PWind dir          NW    NW      NE    SE      SE    SE       N     W
Wind char          GN    LT      LT    LT      LT    GN      GN    GN
Avg clouds    B1   SC FW FW FW   FW FW SC SC   B1 B2 B2 B1   B1 B1 SC
PoP 12hr            0     0       0     0      40    50      30    30
Rain                                                  C  S          S
Snow                                            C  C  C  S    C  C  S

$$
IAZ094-182200-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
1053 AM CST Sun Feb 18 2018

Date             Sun 02/18/18            Mon 02/19/18            Tue 02/20/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      56          43          55          30          35
Temp                   49 55 49 43 43 46 51 55 53 48 40 36 32 32 30 34 35 34 28
Dewpt                  29 29 33 35 38 42 46 49 45 41 34 31 29 29 28 28 25 23 17
RH                     46 37 54 73 82 86 83 80 74 77 79 82 88 88 92 78 66 64 63
Wind dir                S  S  S  S  S SE  S  S  W NW  N  N  N  N  N  N NW NW NW
Wind spd               21 24 14  9  9  9 10 10 10 10 10  9  8  6 10 10 12 13 14
Clouds                 FW FW FW B1 B2 OV OV OV OV OV OV OV OV OV OV OV OV B2 B2
PoP 12hr                      0          70          70          80          70
QPF 12hr                      0        0.09        0.15        0.22        0.16
Snow 12hr                 00-00       00-00       00-00
Frzg rain                                                   D  D  L  L
Rain                                C  L  L  L  C  C  L  L  D        L  C  C
Tstms                                  S  C  C  S  S
Wind chill                                           33 29 25 26 21 26 26 25 16
Min chill              35          38    39          32    25    21    21    15
Wind                    Y
Winter Storm                                          A  A  A  A  A  A


Date               Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            13    29      17    40      27    44      29    46
Temp          19   13 25 28 23   18 37 37 28   29 42 42 33   30 43 44
Dewpt         10    6  6  8 11   10 16 21 24   26 32 32 31   28 32 30
PWind dir           N     N      NE     E      SE    SE      NW    NW
Wind char          GN    GN      LT    LT      LT    GN      GN    GN
Avg clouds    B1   SC SC SC SC   SC SC SC B1   B2 B2 B2 B2   B2 B1 SC
PoP 12hr           10     0      20     0      40    50      60    10
Rain                                               C  C  L
Snow                         S                  C  C     L    C

$$
IAZ017-182200-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
1053 AM CST Sun Feb 18 2018

Date             Sun 02/18/18            Mon 02/19/18            Tue 02/20/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      43          26          29          20          22
Temp                   38 43 39 34 29 27 26 29 28 28 27 25 24 23 20 20 22 22 17
Dewpt                  32 35 33 30 28 26 25 25 25 23 23 21 20 19 17 16 16 16 12
RH                     79 73 79 85 96 96 96 85 88 81 85 84 84 84 88 84 77 77 80
Wind dir                S  S  S  S  N  N  N  N  N  N  N  N  N  N  N  N  N NW NW
Wind spd               23 19 12  8  8 10 13 14 14 16 12 11 10 10 13 11 13 14 14
Clouds                 SC SC SC B1 B2 OV OV OV OV OV OV OV OV OV OV OV OV B2 B2
PoP 12hr                      0          60          80          70          30
QPF 12hr                      0        0.01        0.09        0.09           0
Snow 12hr                 00-00       00-00       00-00
Frzg rain                              C  D  D  C  C  C  C  L  L  C  C
Sleet                                                          S
Wind chill             27 35 31 27 21 17 14 18 16 16 16 14 14 12  7  8  9  9  3
Min chill              19    31    21    13    13    14    12     7     7     2
Wind                    Y
Winter Weath                        Y  Y  Y  Y  Y


Date               Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max             4    19       6    31      17    36      21    36
Temp          11    4 17 16  9    9 28 29 19   20 35 33 26   22 34 33
Dewpt          6    1  5  6  3    3 12 14 14   17 26 27 25   21 26 26
PWind dir          NW    NW       N    SE      SE     E       N     W
Wind char          GN    LT      LT    LT      LT    GN      GN    GN
Avg clouds    B1   SC FW FW FW   FW FW FW SC   B1 B2 B2 B2   B2 B1 B1
PoP 12hr            5     0       0     0      30    50      40    30
Rain                                                  C             S
Snow                                            C  C  C  C    C  C  S

$$
IAZ049-182200-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
1053 AM CST Sun Feb 18 2018

Date             Sun 02/18/18            Mon 02/19/18            Tue 02/20/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      47          35          40          26          28
Temp                   40 45 41 37 35 35 37 38 40 36 33 30 30 29 26 27 27 28 22
Dewpt                  31 33 33 32 32 33 35 35 36 34 30 28 27 27 24 24 23 21 16
RH                     70 62 73 82 89 92 92 89 85 92 89 92 88 92 92 88 85 75 77
Wind dir                S  S  S  S  S  E  E NE  N  N  N  N  N  N  N  N  N NW NW
Wind spd               18 17 12 10  9  6  9  9 10 10 10  9  8  8 12 10 11 13 16
Clouds                 SC FW FW SC B2 OV OV OV OV OV OV OV OV OV OV OV OV B2 B2
PoP 12hr                      0          70          80          80          70
QPF 12hr                      0        0.06        0.14        0.15        0.08
Snow 12hr                 00-00       00-00       00-00
Frzg rain                                             C  C  D  D  L  L  S  S
Rain                                S  C  D  D  C  C  C
Wind chill             31 38 34 30 28 29 30 32 33 29 25 22 22 21 15 18 17 17  8
Min chill              26    33    28    28    29    24    20    15    15     7
Wind                    Y
Winter Storm                                          A  A  A  A  A  A


Date               Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max             9    22      12    35      21    39      25    39
Temp          14    9 20 21 16   14 33 31 24   23 37 36 29   25 37 37
Dewpt          9    5  7  9  9    8 14 17 19   22 28 29 29   25 29 28
PWind dir          NW     N      NE     E      SE    SE       N    NW
Wind char          GN    GN      LT    LT      LT    GN      GN    GN
Avg clouds    B2   SC SC SC SC   SC SC SC SC   B1 B2 B2 B2   B2 B1 B1
PoP 12hr            5     0      10     0      30    50      50    20
Rain                                               C  C  C          S
Snow                                            C  C     C    C

$$
IAZ086-182200-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
1053 AM CST Sun Feb 18 2018

Date             Sun 02/18/18            Mon 02/19/18            Tue 02/20/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      53          40          57          35          41
Temp                   46 52 47 40 40 43 47 53 57 51 45 39 36 37 35 37 38 40 31
Dewpt                  31 32 31 32 35 38 42 46 48 43 40 35 33 34 32 33 31 29 22
RH                     55 46 53 73 82 82 83 77 72 74 82 85 89 89 89 85 76 64 69
Wind dir                S  S  S  S  S SE SE  S SW  W NW NW  N  N NW NW NW NW NW
Wind spd               19 19 13 10 10  9 11 10 11 10 10  8  6  4  9  9 12 13 16
Clouds                 FW SC SC B1 B2 OV OV OV OV OV OV OV OV OV OV OV OV OV OV
PoP 12hr                      0          70          80          80          90
QPF 12hr                      0        0.08        0.31        0.31        0.37
Snow 12hr                 00-00       00-00       00-00
Frzg rain                                                                     S
Rain                                C  L  D  D  L  L  D  D  D  D  D  D  L  L
Tstms                                  S  C  C  C  S  S
Wind chill             39       34 34                   33       28 31 30 33 20
Min chill              29          32    34                30    27    27    20


Date               Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            15    29      18    40      26    44      30    46
Temp          21   15 26 28 23   19 38 36 29   28 42 42 35   30 43 44
Dewpt         13    9  9 11 13   13 18 20 23   25 31 32 33   29 32 30
PWind dir          NW     N      NE     E       E    SE       W     W
Wind char          BZ    GN      LT    LT      LT    GN      GN    GN
Avg clouds    B2   SC SC SC SC   SC SC SC B1   B2 B2 B2 B2   B2 B1 B1
PoP 12hr           20     0      20     0      30    60      50    20
Frzg rain      S
Rain                                               L  C  C    C     S
Snow           S             S    S             C  L          C

$$



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