Point Forecast Matrices
Issued by NWS Des Moines, IA

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Point Forecast Matrices
National Weather Service Des Moines IA
337 PM CST Tue Dec 12 2017

IAZ060-131000-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
337 PM CST Tue Dec 12 2017

Date           12/12/17      Wed 12/13/17            Thu 12/14/17            Fri
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                      28          42          24          34          23
Temp             30 29 31 33 35 39 42 41 37 33 28 26 24 25 31 34 30 27 26 24 24
Dewpt            18 22 24 25 25 29 31 30 26 22 20 20 19 19 20 20 20 21 21 22 21
RH               60 75 75 72 66 67 65 65 64 63 71 78 81 78 63 56 66 78 81 92 88
Wind dir         SW  S  S SW  W NW NW NW NW  N  N NW NW NW NW NW NW NW NW NW  W
Wind spd          5  6 10 11 14 20 27 27 18 14 10  6  6  6  6  6  4  4  6  6  6
Wind gust                       32 41 41 40 28
Clouds           B1 FW FW FW FW B2 B2 B2 B2 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B1
PoP 12hr                      0          20           5           5          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                             S
Wind chill          22 22 24 25 29 31 30 27 23 19 18 16 17 24 28       18 16 16
Min chill        23    20    22    25    26    17    16    16    24    18    15
Wind                                Y  Y


Date           12/15/17  Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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      26    46      28    40      26    46      29    44
Temp          36 35 31   27 44 41 33   28 38 37 29   28 45 40 33   30 44 37
Dewpt         23 22 20   20 25 27 27   25 24 24 22   23 25 25 22   22 24 22
PWind dir         W      SW    SW       N     N       W    SW       W    NW
Wind char        GN      LT    GN      LT    LT      LT    GN      GN    GN
Avg clouds    B1 B1 B1   B1 B1 B2 B2   B2 B2 B1 SC   FW FW SC FW   FW FW SC
PoP 12hr          5       0     0      10     5       5     0       0     0

$$
IAZ039-131000-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
337 PM CST Tue Dec 12 2017

Date           12/12/17      Wed 12/13/17            Thu 12/14/17            Fri
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                      24          37          19          30          19
Temp             26 25 25 27 29 32 37 36 31 27 24 21 19 23 29 30 26 23 22 20 20
Dewpt            14 17 20 23 25 28 30 27 24 20 19 17 16 19 19 19 19 19 19 19 18
RH               60 71 81 85 85 85 75 69 75 74 81 84 88 84 66 63 74 84 88 96 92
Wind dir         SW  S  S  S SW NW NW NW NW  N  N NW NW NW NW  W NW NW NW  W NW
Wind spd          5  5  9 10  9 16 26 26 19 13  9  6  5  5  5  6  5  5  6  8  8
Wind gust                          40 40 39 26
Clouds           B2 B1 FW SC SC OV B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B1 B1
PoP 12hr                      5          30           5           5          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Snow                             C
Wind chill       19 18 16 17 20 21 25 24 18 16 14 12 11 16 22 23 19 16 14 10  9
Min chill        16    16    16    20    17    14    10    11    17    12     8
Wind                                Y  Y


Date           12/15/17  Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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          33      21    39      24    35      23    42      27    39
Temp          32 30 26   22 38 35 27   25 34 30 25   25 41 35 30   28 39 32
Dewpt         18 19 18   19 24 26 25   23 23 23 22   22 26 26 24   22 24 23
PWind dir        NW      SW    SW       N    NW       W    SW       W    NW
Wind char        GN      LT    GN      LT    LT      LT    GN      GN    GN
Avg clouds    B1 B1 B1   B1 B1 B2 B2   B2 B2 B1 SC   SC SC SC SC   FW FW SC
PoP 12hr          5       0    10      20    10       5     5       5     5
Snow                               S

$$
IAZ048-131000-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
337 PM CST Tue Dec 12 2017

Date           12/12/17      Wed 12/13/17            Thu 12/14/17            Fri
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                      29          41          21          32          21
Temp             29 29 29 31 34 38 40 40 34 31 27 25 22 24 30 32 27 25 24 22 21
Dewpt            20 23 24 25 26 30 31 29 25 21 20 19 18 18 20 21 21 21 21 20 20
RH               69 78 81 78 72 73 70 64 69 66 74 78 84 77 66 63 78 84 88 92 96
Wind dir         SW  S  S SW  W NW NW NW NW  N  N NW NW NW NW  W  W NW NW NW  W
Wind spd          5  6  9 10 13 21 27 28 20 16 11  9  8  8  8  8  5  5  9  9  8
Wind gust                       33 42 43 42 28
Clouds           B1 FW FW SC FW OV B2 B2 B2 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 B1
PoP 12hr                      0          20           0           5          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                             S
Wind chill       23 22 21 22 24 27 29 28 22 20 17 15 12 15 22 26 20 18 15 12 11
Min chill        21    20    20    25    20    15    11    11    19    13    11
Wind                                Y  Y


Date           12/15/17  Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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      24    43      26    39      24    45      27    43
Temp          34 32 29   25 42 37 31   26 38 33 28   26 44 37 32   28 43 34
Dewpt         22 21 20   20 26 27 26   24 24 25 22   22 26 25 22   22 24 22
PWind dir         W      SW    SW       N    NW       W    SW       W    NW
Wind char        GN      GN    GN      GN    GN      LT    GN      GN    GN
Avg clouds    B1 B1 B1   B1 B1 B2 B2   B2 B2 B1 SC   FW SC SC FW   FW FW SC
PoP 12hr          5       0     5      10     5       5     0       5     0

$$
IAZ004-131000-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
337 PM CST Tue Dec 12 2017

Date           12/12/17      Wed 12/13/17            Thu 12/14/17            Fri
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          35          18          30          18
Temp             29 28 29 31 34 35 35 34 29 26 22 19 18 22 29 29 26 23 21 22 21
Dewpt            25 25 25 26 28 30 28 25 22 20 18 16 16 18 20 21 21 20 19 20 19
RH               85 88 85 81 78 82 75 69 75 78 84 88 92 84 69 72 81 88 92 92 92
Wind dir         SW SW SW  W NW NW NW NW NW  N  N NW NW NW NW NW NW NW NW NW NW
Wind spd          9 11 11 14 21 28 31 31 20 17 12 10  9  6  8  9  8  9 10 11 10
Wind gust                       41 47 46 35
Clouds           B1 FW SC B1 OV OV B2 B2 B2 B2 B2 B1 B2 B2 B2 OV OV B2 B2 B1 B2
PoP 12hr                     10          30           5          10          10
QPF 12hr                      0        0.01           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                             S
Snow                          C
Wind chill       20 19 19 20 22 22 21 20 16 12 10  7  7 14 21 20 18 13 10 11 10
Min chill        20    18    19    19    15    10     7     8    16    10     9
Wind                                Y  Y


Date           12/15/17  Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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          33      21    36      22    35      22    40      24    37
Temp          32 30 26   22 35 32 26   23 34 30 27   23 39 33 29   24 37 28
Dewpt         20 21 19   20 25 25 23   21 22 23 22   21 24 23 22   20 23 21
PWind dir         W      SW     W       N    NW      SW    SW       W    NW
Wind char        GN      GN    GN      LT    LT      GN    GN      GN    BZ
Avg clouds    B2 B2 B2   B2 B2 B2 B2   B2 B1 SC SC   SC SC SC SC   SC SC SC
PoP 12hr          5       5    30      20     5       5     5       0     5
Rain                            C
Snow                            C  S

$$
IAZ035-131000-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
337 PM CST Tue Dec 12 2017

Date           12/12/17      Wed 12/13/17            Thu 12/14/17            Fri
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                      28          39          20          32          20
Temp             30 29 28 31 34 36 39 37 32 28 24 21 20 23 30 32 28 25 21 22 20
Dewpt            23 24 25 24 25 30 30 27 23 21 19 17 16 18 20 20 21 22 20 20 19
RH               75 81 88 75 69 79 70 67 69 75 81 84 84 81 66 61 75 88 96 92 96
Wind dir         SW  S  S SW  W NW NW NW NW  N  N NW NW NW NW NW NW NW NW NW  W
Wind spd          6  8 11 11 17 23 27 27 18 14 10  8  6  6  8  6  5  6  8  9  8
Wind gust                       35 42 42 40 26
Clouds           SC FW FW SC B1 OV B2 B2 B2 B1 B1 B1 B2 B2 B2 B2 OV B2 B2 B1 B1
PoP 12hr                     10          20           5          10          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                          S  S
Snow                          S  S
Wind chill       23 21 18 22 23 25 28 25 21 17 14 12 11 16 22 26 22 17 12 12 10
Min chill        22    18    19    22    20    14    10    10    22    10     9
Wind                                Y  Y


Date           12/15/17  Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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      24    40      24    38      23    44      27    41
Temp          34 34 29   25 39 34 28   25 37 33 28   24 43 37 31   28 41 33
Dewpt         21 20 19   20 26 26 25   23 23 23 22   22 25 24 21   21 23 21
PWind dir         W      SW     W       N    NW      SW    SW       W    NW
Wind char        GN      GN    GN      LT    LT      LT    GN      GN    GN
Avg clouds    B2 B1 B1   B1 B2 B2 B2   B2 B1 B1 SC   SC SC SC SC   FW FW SC
PoP 12hr          5       0    10      20     5       5     0       5     5
Snow                               S

$$
IAZ094-131000-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
337 PM CST Tue Dec 12 2017

Date           12/12/17      Wed 12/13/17            Thu 12/14/17            Fri
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                      29          46          24          35          23
Temp             31 30 30 31 33 39 45 44 38 33 29 26 24 26 33 35 30 28 27 27 24
Dewpt            18 22 24 25 24 26 30 29 27 24 22 21 20 20 21 21 22 23 21 23 22
RH               58 72 78 78 69 59 55 55 64 69 75 81 84 78 61 56 72 81 78 85 92
Wind dir         SW SW SW SW  W  W NW NW NW  N  N  N  N NW NW NW NW NW NW NW  W
Wind spd          6  6 11 12 14 20 27 26 19 14 11  9  8  6  8  8  4  4  6  8  8
Wind gust                       33 42 40 36 27
Clouds           SC FW FW FW FW B1 SC B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 SC
PoP 12hr                      0          20           5           5          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                             S
Wind chill       24 22 20 21 23 29 36 34 28 23 19 17 15 18 26 28       19 19 15
Min chill        22    19    19    22    28    18    15    15    24    18    15


Date           12/15/17  Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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          39      27    48      28    42      26    48      29    46
Temp          37 35 32   28 47 43 34   28 40 37 29   28 47 42 33   30 46 37
Dewpt         23 22 21   21 26 28 28   25 25 24 22   24 25 25 24   22 24 22
PWind dir         W      SW     S       N     N       W    SW       W    NW
Wind char        GN      GN    GN      LT    GN      LT    GN      GN    GN
Avg clouds    B1 B1 SC   SC SC B1 B1   B1 B1 B1 SC   FW FW SC SC   FW FW FW
PoP 12hr          0       0     0       5     5       0     0       0     0

$$
IAZ017-131000-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
337 PM CST Tue Dec 12 2017

Date           12/12/17      Wed 12/13/17            Thu 12/14/17            Fri
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                      25          36          17          29          17
Temp             27 27 26 27 30 34 36 34 28 25 23 20 18 21 27 29 25 24 22 20 20
Dewpt            20 23 24 25 26 31 29 27 23 20 18 17 17 18 18 19 19 21 18 18 18
RH               74 85 92 92 85 89 75 75 81 81 81 88 96 88 68 66 78 88 84 92 92
Wind dir         SW  S  S SW  W NW NW NW NW  N  N NW NW NW NW NW NW NW NW NW NW
Wind spd          8  9 11 11 13 24 29 28 20 16 10  9  8  8  9  8  6  9  9 10 10
Wind gust                       35 44 43 39
Clouds           OV SC SC B1 B2 OV B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B1 B2
PoP 12hr                     10          30           5           5          10
QPF 12hr                      0        0.01           0           0           0
Snow 12hr                 00-00           T       00-00
Snow                          S  C
Wind chill       19 18 15 17 19 22 23 21 14 12 12  9  7 12 19 21 17 14 12  9  8
Min chill        16    15    15    20    13    10     7     7    17    12     7
Wind                                Y  Y


Date           12/15/17  Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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          32      20    37      23    34      22    40      25    37
Temp          31 27 25   21 36 32 27   23 33 27 24   24 39 34 30   26 37 29
Dewpt         18 19 18   19 25 25 24   22 23 22 21   21 25 24 22   21 24 22
PWind dir        NW      SW     W       N    NW      SW    SW       W    NW
Wind char        GN      GN    GN      GN    GN      GN    GN      GN    BZ
Avg clouds    B1 B1 B2   B1 B2 B2 B2   B2 B1 B1 SC   SC SC SC SC   SC FW SC
PoP 12hr          5       0    20      20    10       5     0       5     5
Rain                            S
Snow                            S  S

$$
IAZ049-131000-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
337 PM CST Tue Dec 12 2017

Date           12/12/17      Wed 12/13/17            Thu 12/14/17            Fri
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                      25          38          19          31          19
Temp             26 26 26 28 30 36 38 37 32 28 25 22 19 23 29 31 26 23 23 20 20
Dewpt            15 19 22 24 24 28 30 28 24 21 19 18 17 18 18 19 19 20 19 19 18
RH               62 74 85 85 78 72 73 70 72 75 78 84 92 81 63 61 74 88 84 96 92
Wind dir         SW  S  S  S SW NW NW NW NW  N  N NW NW NW NW  W NW NW NW NW  W
Wind spd          5  6 10 10 12 20 28 28 21 16 10  8  6  6  6  8  4  4  8  8  9
Wind gust                       31 43 43 42 26
Clouds           B2 SC FW SC FW OV B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B1 B1 B1
PoP 12hr                      0          30           5           5          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                             C
Snow                             C
Wind chill       19 19 16 18 20 25 26 25 20 17 15 12 10 15 22 24 20 17 14 11  9
Min chill        18    16    16    20    19    14    10    10    19    14     8
Wind                                Y  Y


Date           12/15/17  Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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          34      22    41      24    37      23    42      26    41
Temp          32 30 27   23 40 35 29   24 36 31 26   25 41 34 30   27 41 34
Dewpt         19 20 18   19 24 26 25   24 23 23 22   22 25 25 22   21 24 23
PWind dir         W      SW    SW       N     N       W    SW       W    NW
Wind char        GN      LT    GN      GN    GN      LT    GN      GN    GN
Avg clouds    B1 B2 B1   B1 B1 B2 B2   B2 B2 B1 SC   SC SC SC SC   FW FW SC
PoP 12hr          5       0     5      10     5       5     0       5     0

$$
IAZ086-131000-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
337 PM CST Tue Dec 12 2017

Date           12/12/17      Wed 12/13/17            Thu 12/14/17            Fri
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          43          21          33          21
Temp             27 27 27 30 32 37 43 41 36 31 27 24 21 26 31 33 28 25 24 23 22
Dewpt            10 16 20 23 24 26 31 29 26 22 20 19 18 19 19 19 19 19 20 21 19
RH               48 63 74 75 72 64 62 62 67 69 74 81 88 74 61 56 68 78 84 92 88
Wind dir         SW SW  S  S SW  W NW NW NW NW  N NW NW NW NW  W NW  W  W  W  W
Wind spd          5  6 10 12 13 19 27 28 20 17 10  9  6  6  6  6  4  3  6  8  8
Wind gust                       29 41 43 39 28
Clouds           B1 SC FW FW FW B2 B2 B2 B2 B1 B1 SC B1 B1 B2 B2 B2 B1 B2 B1 B1
PoP 12hr                      0          30           5           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                             C
Wind chill       21 20 17 20 22 27 33 30 25 20 18 14 12 18 24 26       16 15 13
Min chill        19    16    17    23    24    17    11    12    20    15    11


Date           12/15/17  Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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          37      25    47      27    40      26    46      29    44
Temp          36 33 30   26 45 42 34   27 38 36 30   28 45 38 33   30 44 36
Dewpt         22 21 20   19 24 27 28   25 25 24 23   23 25 26 25   22 24 23
PWind dir         W      SW     S      NE     N       W    SW       W    NW
Wind char        GN      GN    GN      LT    GN      LT    GN      GN    GN
Avg clouds    B1 B1 B1   SC SC B1 B1   B1 B1 B1 SC   SC FW SC SC   FW FW FW
PoP 12hr          0       0     0       5     5       5     0       5     0

$$



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