Point Forecast Matrices
Issued by NWS Des Moines, IA

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Point Forecast Matrices
National Weather Service Des Moines IA
1137 PM CST Thu Jan 18 2018

IAZ060-191000-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
1137 PM CST Thu Jan 18 2018

Date           01/18/18      Fri 01/19/18            Sat 01/20/18            Sun
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      27          47          27          43          34
Temp                   30 27 27 30 41 47 39 34 32 28 27 30 39 43 39 34 35 35 35
Dewpt                  22 20 19 21 26 29 27 28 27 27 26 26 30 32 32 33 33 34 34
RH                     72 74 71 69 55 49 62 78 81 96 96 85 70 65 76 96 92 96 96
Wind dir                S  S  S SW SW SW SW SW SW SW SW SW SW  S SE SE SE  E SE
Wind spd                6  6  8  9 12 13 10  9  8  5  5  4  5  4  4  5  5  5  6
Clouds                 B1 B1 B1 SC FW FW FW FW FW SC SC SC B1 B1 B2 B2 B2 B1 B2
PoP 12hr                      0           0           0           5          30
QPF 12hr                      0           0           0           0        0.01
Snow 12hr                 00-00       00-00       00-00
Drizzle                                                           S  S  C  C  C
Obvis                                                               PF PF PF PF
Wind chill             23 20 19 21 34    32 27 26 22 20
Min chill              21    18    18    32    24    19    19    33    29    29


Date           01/21/18  Mon 01/22/18  Tue 01/23/18  Wed 01/24/18  Thu 01/25/18
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          46      32    35      21    32      18    34      21    41
Temp          43 45 42   33 34 31 26   21 31 29 22   19 33 31 26   22 39 39
Dewpt         39 40 36   31 27 24 20   17 18 19 19   16 19 20 20   19 24 26
PWind dir        SE      SW    NW      NW    NW      NW    SW      SE     S
Wind char        LT      GN    BZ      BZ    GN      LT    LT      LT    GN
Avg clouds    B2 OV B2   B2 B2 B2 B2   B1 SC SC SC   B1 B1 B1 SC   SC SC SC
PoP 12hr         50      80    50      40     0       5    20      20     0
Drizzle        C
Rain              C  D    C  C
Snow                      C  C  C  C                        S  S

$$
IAZ039-191000-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
1137 PM CST Thu Jan 18 2018

Date           01/18/18      Fri 01/19/18            Sat 01/20/18            Sun
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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          23          39          27
Temp                   25 23 22 26 36 41 34 30 28 25 23 26 36 39 33 27 29 31 31
Dewpt                  19 18 17 20 26 29 27 27 26 25 23 24 29 30 28 27 29 30 30
RH                     78 81 81 78 67 62 75 88 92100100 92 75 70 82100100 96 96
Wind dir                S  S  S  S  S  S SW SW SW SW SW SW SW  S SE SE SE  E  E
Wind spd                9  8  6  9 12 13 10  8  6  5  3  3  3  3  4  3  4  6  6
Clouds                 B1 B1 B1 SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B2 B2 OV
PoP 12hr                      0           0           5           0          30
QPF 12hr                      0           0           0           0        0.01
Snow 12hr                 00-00       00-00       00-00
Frzg drzl                                                               C  C  C
Obvis                                                               PF PF
Wind chill             16 13 13 16 27 33 27 22 21 19 17                   24 24
Min chill              14    11    11    26    20    16    16    27    20    22


Date           01/21/18  Mon 01/22/18  Tue 01/23/18  Wed 01/24/18  Thu 01/25/18
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          41      32    35      17    26      12    27      15    35
Temp          38 40 43   33 35 28 22   17 26 23 17   13 26 25 20   16 32 33
Dewpt         36 37 39   33 31 26 19   16 17 17 14   12 16 18 17   16 22 24
PWind dir         E      SE     W      NW    NW      NW     W      SE     S
Wind char        GN      GN    BZ      BZ    GN      LT    LT      LT    GN
Avg clouds    OV OV OV   B2 B2 B2 B2   B2 B1 SC B1   B1 B1 B1 B1   B1 SC SC
PoP 12hr         60      80    80      50     5       5    10      10     0
Drizzle        C
Frzg drzl      C
Rain              L  D    L  D  L
Snow                      L  D  L  C    S

$$
IAZ048-191000-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
1137 PM CST Thu Jan 18 2018

Date           01/18/18      Fri 01/19/18            Sat 01/20/18            Sun
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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          45          24          40          30
Temp                   24 22 22 26 40 45 37 31 30 27 24 26 37 39 32 32 30 31 31
Dewpt                  21 20 18 21 27 30 28 27 27 25 23 25 29 30 30 31 30 31 31
RH                     88 92 84 81 59 55 70 85 88 92 96 96 72 70 92 96100100100
Wind dir                S  S  S  S  S  S SW SW SW SW SW SW SW  S SE SE  E  E  E
Wind spd                5  6  8  9 13 14 10  8  6  5  3  4  4  3  4  4  5  6  6
Clouds                 B1 B1 B1 SC SC SC FW SC SC SC SC B1 B1 B1 B2 B2 B2 B2 B2
PoP 12hr                      0           0           5           0          30
QPF 12hr                      0           0           0           0        0.01
Snow 12hr                 00-00       00-00       00-00
Drizzle                                                           S
Frzg drzl                                                            S  C  C  C
Sleet                                                             S
Obvis                                                            PF PF PF
Wind chill             17 14 13 17 32 39 30 24 23 20                26 24 24 24
Min chill              16    12    12    29    22    18    18    27    24    24


Date           01/21/18  Mon 01/22/18  Tue 01/23/18  Wed 01/24/18  Thu 01/25/18
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          42      30    34      19    29      15    31      18    38
Temp          39 41 40   31 34 30 24   19 28 27 22   16 30 28 24   19 36 35
Dewpt         37 37 36   30 27 24 19   16 18 18 17   14 19 19 20   17 25 25
PWind dir         E      SW    NW      NW    NW      NW    SW      SE     S
Wind char        LT      GN    BZ      BZ    GN      LT    LT      LT    GN
Avg clouds    B2 OV OV   B2 B2 B2 B2   B1 SC SC B1   B1 B1 B1 SC   SC SC SC
PoP 12hr         50      80    50      40     0       5    20      10     0
Drizzle        C
Frzg drzl      C
Rain              C  D    C
Snow                      C  C  C  C                        S

$$
IAZ004-191000-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
1137 PM CST Thu Jan 18 2018

Date           01/18/18      Fri 01/19/18            Sat 01/20/18            Sun
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      26          45          22          41          24
Temp                   29 27 26 29 39 45 35 29 26 23 22 25 37 40 32 27 24 24 25
Dewpt                  24 23 20 22 29 32 30 28 25 23 22 23 29 30 28 26 24 24 24
RH                     81 85 78 75 67 60 82 96 96100100 92 72 67 85 96100100 96
Wind dir               SW SW SW  S SW SW  W  W  W NW NW  W  N NE NE  E NE NE NE
Wind spd               12 10 10 13 16 13 10  6  5  4  4  3  3  4  5  5  5  6  9
Clouds                 B1 B1 B1 B1 B1 SC SC SC SC SC B1 B1 B1 B1 B2 B1 B2 B2 B2
PoP 12hr                      0           0           0           0          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Frzg drzl                                                                     S
Snow                                                                          S
Obvis                                                               PF PF
Wind chill             19 17 16 19 31 38 27 21 20 17 16          26 20 17 16 16
Min chill              19    15    15    26    18    16    16    26    17    14


Date           01/21/18  Mon 01/22/18  Tue 01/23/18  Wed 01/24/18  Thu 01/25/18
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          35      25    28      13    23      10    23      12    31
Temp          33 33 33   25 28 23 18   13 21 21 14   11 22 21 15   14 29 29
Dewpt         29 30 30   25 23 20 15   11 14 14 11    9 15 15 12   12 22 23
PWind dir        NE       N    NW      NW    NW      NW     W       S     S
Wind char        GN      BZ    WY      BZ    GN      LT    GN      GN    GN
Avg clouds    B2 OV OV   OV OV OV B2   B1 SC B1 B1   B1 B1 B1 B1   B1 B1 B1
PoP 12hr         50      90    70      20    10       5     5       0     5
Frzg drzl      S
Frzg rain            S
Rain              C  D
Snow                 D    D  L  C  S

$$
IAZ035-191000-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
1137 PM CST Thu Jan 18 2018

Date           01/18/18      Fri 01/19/18            Sat 01/20/18            Sun
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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          44          23          40          26
Temp                   25 23 23 27 38 44 36 29 27 24 23 26 36 39 33 26 27 29 29
Dewpt                  21 20 18 21 28 31 28 26 25 23 22 24 29 30 27 26 27 29 28
RH                     84 88 81 78 67 60 72 88 92 96 96 92 75 70 78100100100 96
Wind dir                S  S  S  S  S SW SW SW SW  W NW  W SW  E  E  E  E  E  E
Wind spd               10  9  8 10 13 14  9  8  5  4  3  2  3  4  4  5  4  6  8
Clouds                 B1 B1 B1 B1 SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B2 B2 OV
PoP 12hr                      0           0           5           0          20
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Frzg drzl                                                               S  S  C
Obvis                                                               PF PF
Wind chill             16 13 14 18 30 37 28 21 20 18                19    22 22
Min chill              15    12    13    27    19    16    17    27    19    20


Date           01/21/18  Mon 01/22/18  Tue 01/23/18  Wed 01/24/18  Thu 01/25/18
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          38      28    31      16    26      13    27      15    35
Temp          35 38 36   29 31 26 21   16 25 24 17   14 26 24 19   16 33 33
Dewpt         34 34 34   28 26 22 18   14 18 17 14   12 18 17 16   15 25 24
PWind dir         E      NE    NW      NW    NW      NW    SW      SE     S
Wind char        GN      GN    BZ      BZ    GN      LT    LT      LT    GN
Avg clouds    OV OV OV   B2 B2 B2 B2   B1 SC SC B1   B1 B1 B1 SC   B1 B1 SC
PoP 12hr         50      80    70      40     5       5    10       5     0
Drizzle        C
Frzg drzl      C
Rain              C  D    L
Snow                      L  L  C  C

$$
IAZ094-191000-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
1137 PM CST Thu Jan 18 2018

Date           01/18/18      Fri 01/19/18            Sat 01/20/18            Sun
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      26          45          28          43          36
Temp                   29 26 26 28 39 45 37 33 32 29 28 31 40 43 40 39 37 37 38
Dewpt                  21 20 19 21 26 28 27 28 27 27 27 29 33 33 35 36 36 36 37
RH                     72 78 74 75 59 51 67 82 81 92 96 92 76 67 82 89 96 96 96
Wind dir                S  S SW SW SW  S  S SW SW SW SW SW SW  S SE SE SE SE SE
Wind spd               12 12 11 13 14 16 12 12 11  9  9  8  9  5  5  6  6  8  8
Clouds                 B1 SC SC SC FW FW FW FW FW FW SC B1 B1 B2 B2 B2 B2 B1 B2
PoP 12hr                      0           0           0          10          30
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Drizzle                                                           C  C  S  S  C
Wind chill             18 15 15 17 31 38 29 24 23 20 20 24 34          31 31 32
Min chill              16    13    13    29    23    19    19    35    29    29


Date           01/21/18  Mon 01/22/18  Tue 01/23/18  Wed 01/24/18  Thu 01/25/18
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          48      32    35      22    35      20    37      24    42
Temp          46 45 42   33 35 31 26   23 34 31 23   22 36 33 27   25 40 38
Dewpt         43 42 35   30 26 24 21   18 20 21 20   19 21 22 23   22 25 26
PWind dir        SE      SW     W      NW     W       W     W      SE     S
Wind char        GN      GN    BZ      BZ    GN      LT    LT      LT    GN
Avg clouds    B2 B2 B2   B2 B2 B2 B1   SC SC SC SC   SC SC SC SC   SC SC SC
PoP 12hr         50      60    50      30     0       0    10      20     0
Drizzle        C
Rain              C  L    C  C  C
Snow                      C  C  C  C                           S

$$
IAZ017-191000-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
1137 PM CST Thu Jan 18 2018

Date           01/18/18      Fri 01/19/18            Sat 01/20/18            Sun
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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          42          22          38          24
Temp                   26 22 22 26 37 42 34 29 27 23 22 25 35 37 30 24 25 27 28
Dewpt                  19 18 18 21 28 31 28 27 25 22 22 23 29 29 26 24 25 26 26
RH                     74 84 84 81 70 65 78 92 92 96100 92 78 72 85100100 96 92
Wind dir               SW SW SW  S  S SW SW SW  W  W NW  W  W  S  E SE  E  E  E
Wind spd               13 10  8 10 13 13 10  8  6  4  3  3  3  3  3  4  4  6  8
Clouds                 B1 B1 B1 B1 B1 SC SC SC SC SC B1 B1 B1 B1 B1 B1 B2 B2 B2
PoP 12hr                      0           0           5           0          20
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Frzg drzl                                                               S  S  C
Snow                                                                    S
Obvis                                                               PF PF
Wind chill             14 11 13 16 28 35 27 21 20 17                   19 20 20
Min chill              13    10    12    24    18    16    16    25    18    18


Date           01/21/18  Mon 01/22/18  Tue 01/23/18  Wed 01/24/18  Thu 01/25/18
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          36      28    31      14    23      10    23      12    32
Temp          35 34 38   29 31 25 18   14 22 21 14   11 22 20 16   13 29 30
Dewpt         32 33 34   29 28 22 16   12 15 14 12    9 15 15 14   13 23 24
PWind dir         E      NE    NW      NW    NW      NW     W      SE     S
Wind char        GN      GN    BZ      BZ    GN      LT    LT      LT    GN
Avg clouds    OV OV OV   OV OV OV B2   B1 B1 B1 SC   B1 B1 B1 B1   B1 B1 B1
PoP 12hr         60      90    80      50     5       0     5       0     0
Drizzle        S
Frzg drzl      C
Rain              L  D    L
Snow                 D    L  D  L  C

$$
IAZ049-191000-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
1137 PM CST Thu Jan 18 2018

Date           01/18/18      Fri 01/19/18            Sat 01/20/18            Sun
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      23          42          23          39          29
Temp                   26 24 23 27 37 42 35 29 28 26 23 26 36 38 31 29 30 32 32
Dewpt                  21 19 18 20 26 30 27 27 26 25 23 24 29 31 29 29 30 32 31
RH                     81 81 81 74 64 62 72 92 92 96100 92 75 76 92100100100 96
Wind dir                S SW  S  S  S  S SW SW SW SW SW SW SW  S SE SE SE  E  E
Wind spd                9  8  8 10 14 14 11  9  8  6  4  4  4  3  3  4  5  6  6
Clouds                 B1 B1 B1 SC SC SC SC FW SC SC SC B1 B1 B1 B2 B2 B2 B2 OV
PoP 12hr                      0           0           0           0          40
QPF 12hr                      0           0           0           0        0.01
Snow 12hr                 00-00       00-00       00-00
Frzg drzl                                                            S  C  C  C
Sleet                                                             S
Obvis                                                            PF PF PF
Wind chill             17 14 14 17 28 34 27 21 20 19 17                24 26 25
Min chill              16    13    14    26    19    16    16    28    24    22


Date           01/21/18  Mon 01/22/18  Tue 01/23/18  Wed 01/24/18  Thu 01/25/18
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          42      31    34      18    28      14    29      16    37
Temp          39 41 42   32 34 28 22   18 27 25 20   14 28 24 21   17 35 34
Dewpt         37 38 38   32 29 25 19   16 17 17 16   13 17 18 18   17 23 25
PWind dir        SE       S     W      NW    NW      NW     W      SE     S
Wind char        GN      GN    BZ      BZ    GN      LT    LT      LT    GN
Avg clouds    OV OV OV   B2 B2 B2 B2   B1 SC SC B1   B1 B1 B1 SC   SC SC SC
PoP 12hr         60      90    60      40     0       5    20      20     0
Drizzle        C
Frzg drzl      C
Rain              L  D    L
Snow                      L  L  L  C                        S  S

$$
IAZ086-191000-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
1137 PM CST Thu Jan 18 2018

Date           01/18/18      Fri 01/19/18            Sat 01/20/18            Sun
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      26          46          29          44          35
Temp                   32 27 26 29 40 46 38 36 32 30 29 32 43 43 42 35 36 37 39
Dewpt                  19 19 19 21 25 29 27 28 28 28 28 30 33 35 34 35 36 37 38
RH                     58 71 74 72 55 51 64 72 85 92 96 92 67 73 73100100100 96
Wind dir               SW SW SW SW SW SW SW SW SW SW SW SW SW SW SE SE SE SE  S
Wind spd               12 11 10 12 14 16 12 12 10  9  8  9  9  5  5  5  8  8  8
Clouds                 SC SC SC SC SC SC FW FW FW FW SC SC B1 B1 B2 B1 B2 B2 B2
PoP 12hr                      0           0           0           5          30
QPF 12hr                      0           0           0           0        0.01
Snow 12hr                 00-00       00-00       00-00
Drizzle                                                           C  C  C  C  C
Obvis                                                               PF
Wind chill             22 17 16 19 32 39 30 27 24 22 21 24 37          30    33
Min chill              21    15    15    28    22    19    20    36    29    29


Date           01/21/18  Mon 01/22/18  Tue 01/23/18  Wed 01/24/18  Thu 01/25/18
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          49      36    39      23    34      19    35      22    41
Temp          46 49 50   39 37 33 26   24 33 31 23   21 34 31 24   24 40 38
Dewpt         43 44 42   37 30 26 22   19 20 20 19   18 19 21 21   21 24 25
PWind dir        SE       S     W       W    NW      NW    SW      SE     S
Wind char        GN      GN    BZ      BZ    GN      LT    LT      LT    GN
Avg clouds    B2 OV B2   B2 B2 B2 B2   B1 SC SC SC   B1 B1 B1 SC   SC SC SC
PoP 12hr         40      80    40      40     0       5    10      20     0
Drizzle        C
Rain              C  D    L  C  C
Snow                         C  C  C                           S

$$



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