Point Forecast Matrices
Issued by NWS Des Moines, IA

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FOUS53 KDMX 202323
PFMDMX

Point Forecast Matrices
National Weather Service Des Moines IA
523 PM CST Tue Feb 20 2018

IAZ060-211000-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
523 PM CST Tue Feb 20 2018

Date           02/20/18      Wed 02/21/18            Thu 02/22/18            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                      11          27          21          33          28
Temp             22 19 16 13 11 13 22 27 25 23 22 21 22 25 31 33 33 33 32 32 28
Dewpt            14 12  9  7  6  6  8 10 12 13 13 16 17 19 22 24 26 28 28 28 27
RH               71 74 73 76 80 73 54 48 57 65 68 81 81 78 69 69 75 82 85 85 96
Wind dir         NW NW  N  N  N  N  N NE NE NE  E NE  E  E  E  E  E  E SE SE NW
Wind spd         11 11 11  9  8  6  6  5  5  6  6  6  6  9  8  6  6  5  3  3  5
Clouds           OV B2 SC SC FW FW FW SC B1 B2 B2 B2 OV OV OV OV OV OV OV OV B2
PoP 12hr                      0           0          50          40          60
QPF 12hr                      0           0        0.07        0.06        0.06
Snow 12hr                 00-00       00-00           1
Flurries
Frzg rain                                                   C  C  S  S  C  C
Rain                                                           C  L  L  C  C
Sleet                                                             S
Snow                                            C  C  C  C
Wind chill       10  7  3  1 -1  4 14 20 17 16 14 12 13 16 24 27 26          22
Min chill         9     2    -2    -2    16    13    11    13    23    24    22


Date           02/23/18  Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
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          39      24    39      25    41      23    42      25    45
Temp          36 35 25   27 37 37 29   26 39 39 26   25 40 39 30   26 42 42
Dewpt         29 27 23   23 28 29 24   22 26 25 20   19 28 26 23   20 28 28
PWind dir        NW      NE    NE      NW     W       S     W      NW    SW
Wind char        LT      LT    GN      GN    GN      LT    GN      GN    GN
Avg clouds    B1 SC SC   B1 B2 B2 B2   B1 SC SC SC   SC SC SC SC   FW FW FW
PoP 12hr          5      10    70      40     0       0    20       5    10
Rain                         C  L  C                        S
Snow                         C     C    S

$$
IAZ039-211000-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
523 PM CST Tue Feb 20 2018

Date           02/20/18      Wed 02/21/18            Thu 02/22/18            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                       9          24          16          31          26
Temp             21 18 14 11  9 11 19 24 19 16 16 16 17 21 28 31 31 32 30 28 26
Dewpt            16 13  9  7  6  7 10 11 13 13 13 14 15 18 21 24 26 28 28 28 26
RH               81 80 80 83 87 83 67 57 77 88 88 92 92 88 75 75 81 85 92100100
Wind dir         NW NW NW NW NW  N  N  N NE NE NE  E  E  E  E  E  E SE SE  S  W
Wind spd         12 13 13 11  9  8  6  5  5  5  6  6  8  9 10  9  9  8  6  4  4
Clouds           OV B2 B1 FW FW CL CL SC SC B1 B2 B2 OV B2 OV OV OV OV OV OV OV
PoP 12hr                      0           0          30          40          70
QPF 12hr                      0           0        0.02        0.05        0.12
Snow 12hr                 00-00       00-00           T
Flurries
Frzg rain                                                      S  L  L  C  C
Sleet                                                                S
Snow                                            C  C  C  C  C  C  C  S
Wind chill        9  4 -1 -3 -5  0 10 17 11  7  6  7  7 11 19 23 23 25 23    20
Min chill         8    -3    -6    -5    10     6     5     7    20    23    19


Date           02/23/18  Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
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      20    37      23    37      19    38      21    38
Temp          35 31 23   21 34 36 28   24 35 35 25   20 36 35 27   22 36 35
Dewpt         30 28 23   20 27 29 25   21 25 25 21   18 27 26 23   20 26 26
PWind dir        NW       N    NE       N     W      SW    SW      NW    NW
Wind char        LT      LT    GN      GN    GN      LT    GN      GN    GN
Avg clouds    B2 B1 B1   SC B1 B2 B2   B1 SC SC SC   SC SC SC SC   SC FW SC
PoP 12hr         10       5    70      50     0       5    30      20    10
Rain                            L  C                        C  S
Snow                         S  L  C    C                   C  S

$$
IAZ048-211000-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
523 PM CST Tue Feb 20 2018

Date           02/20/18      Wed 02/21/18            Thu 02/22/18            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                       9          26          18          31          25
Temp             20 17 14 11  9 11 21 26 21 18 19 19 20 23 28 31 31 30 31 30 25
Dewpt            13 11  8  6  5  6  8 10 11 13 12 14 17 18 21 24 25 27 27 28 25
RH               74 77 76 80 83 80 56 50 65 80 74 80 88 81 75 75 78 88 85 92100
Wind dir         NW NW NW  N  N  N  N NE NE NE  E  E  E  E  E  E  E  E SE  S NW
Wind spd         12 13 13 10  9  8  8  6  6  6  6  6  8  9 10  8  8  6  4  3  5
Clouds           OV B2 SC FW FW CL CL SC B1 B2 B2 B2 OV OV OV OV OV OV OV OV B2
PoP 12hr                      0           0          40          40          70
QPF 12hr                      0           0        0.04        0.03        0.08
Snow 12hr                 00-00       00-00           1
Flurries
Frzg rain                                                   C  C  L  L  C  C
Sleet                                                                S
Snow                                            C  C  C  C        S
Wind chill        8  3 -1 -3 -5  0 12 18 12 10 10 10 10 13 19 24 24 23 25    18
Min chill         7    -1    -6    -5    11     9     9    10    20    18    17


Date           02/23/18  Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
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          37      22    36      22    39      21    40      22    40
Temp          36 33 24   23 34 34 26   23 36 36 24   24 38 38 28   23 38 37
Dewpt         29 27 22   21 27 28 23   20 25 26 20   19 27 26 22   19 27 27
PWind dir        NW      NE    NE      NW    SW       S     W      NW    NW
Wind char        LT      LT    GN      GN    GN      LT    GN      GN    GN
Avg clouds    B2 SC SC   B1 B2 B2 B2   SC SC SC SC   SC SC SC SC   FW FW SC
PoP 12hr          5       5    70      40     0       0    20      10    10
Rain                            L                           S
Snow                         C  L  C    S

$$
IAZ004-211000-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
523 PM CST Tue Feb 20 2018

Date           02/20/18      Wed 02/21/18            Thu 02/22/18            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                      -3          21           8          27          19
Temp             12  7  3 -1 -3  3 16 21 13  8  8 11 12 16 24 27 27 24 20 20 19
Dewpt             6  3  0 -3 -4 -1  3  7  6  6  6  9 10 13 17 20 22 23 19 19 18
RH               76 83 87 91 95 83 56 54 73 91 91 91 91 88 74 74 81 96 96 96 96
Wind dir         NW NW NW NW  W  W NW  S SE SE SE  E  E  E  E  E  E SE  S SW  W
Wind spd         11 10 10  9  6  5  5  3  4  4  5  5  6  9 10  9  9  6  4  3  6
Clouds           B1 FW FW CL CL CL CL CL FW B1 B1 B2 B2 B2 OV OV OV OV OV OV B2
PoP 12hr                      0           0          10          60          80
QPF 12hr                      0           0           0        0.04        0.09
Snow 12hr                 00-00       00-00       00-00
Flurries
Frzg rain                                                   S  L     S  C  C
Snow                                                  S  S  L  C  D  D
Wind chill       -2 -8-12-16-17 -8  7     5 -1 -2  1  1  4 14 18 18 16 14 14 10
Min chill        -3   -12   -18   -17     3    -2    -1     0    14    12    10


Date           02/23/18  Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
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          30      14    29      17    32      15    32      15    32
Temp          27 25 17   15 27 27 21   18 30 30 19   16 30 30 21   16 29 30
Dewpt         23 21 15   14 22 22 19   17 22 22 15   14 23 22 17   14 22 24
PWind dir        NW       N    NE      NW     W      SW     W       W    SW
Wind char        LT      LT    LT      GN    GN      GN    GN      GN    GN
Avg clouds    B2 B1 SC   B1 B2 B2 B2   SC SC SC SC   SC SC SC SC   SC SC SC
PoP 12hr          5       5    50      20     0       5    10       0     5
Snow                         C  C  S

$$
IAZ035-211000-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
523 PM CST Tue Feb 20 2018

Date           02/20/18      Wed 02/21/18            Thu 02/22/18            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                       3          22          14          29          23
Temp             16 13  9  6  3  7 17 22 16 14 15 15 18 21 26 29 28 29 26 25 23
Dewpt            10  7  4  2  1  3  7 10 10 11 10 12 14 17 20 23 24 26 25 25 23
RH               77 76 80 83 91 83 64 59 77 88 80 88 84 84 78 78 85 88 96100100
Wind dir         NW NW NW NW NW  N  N NE  E  E  E  E  E  E  E  E  E SE SE  S NW
Wind spd         11 10  9  6  5  5  5  5  4  4  5  5  6  9 10  9  9  8  4  4  5
Clouds           B2 B1 FW FW CL CL CL FW SC B1 B2 B2 OV B2 OV OV OV OV OV OV B2
PoP 12hr                      0           0          40          40          70
QPF 12hr                      0           0        0.02        0.03        0.09
Snow 12hr                 00-00       00-00           T
Flurries
Frzg rain                                                   S  C  C  L  C  C
Snow                                            C  C  C  C  C     L  C
Wind chill        3 -1 -4 -7 -8 -3  9 15  9  6  5  6  9 10 16 20 19 21    19 16
Min chill         3    -5    -9    -8     9     4     4     7    17    18    16


Date           02/23/18  Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
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          33      18    32      20    36      19    37      18    36
Temp          31 28 21   19 31 30 26   21 34 33 23   20 35 34 26   19 34 33
Dewpt         26 25 19   17 25 26 21   18 25 25 19   17 26 25 20   16 25 26
PWind dir        NW       N    NE      NW    SW       S     W      NW    SW
Wind char        LT      LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B2 SC SC   B1 B2 B2 B2   SC SC SC SC   SC SC SC SC   SC FW SC
PoP 12hr          5       5    60      40     0       5    20       5    10
Rain                                                        S
Snow                         C  L  C                        S

$$
IAZ094-211000-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
523 PM CST Tue Feb 20 2018

Date           02/20/18      Wed 02/21/18            Thu 02/22/18            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                      12          30          21          34          29
Temp             23 19 16 13 12 15 25 30 26 23 21 22 22 26 30 34 32 32 32 32 29
Dewpt            15 12 10  9  8  8  9 10 12 13 14 17 18 22 23 26 27 29 28 30 28
RH               71 74 77 84 84 73 50 42 55 65 74 81 84 85 75 72 81 88 85 92 96
Wind dir         NW  N  N  N  N  N  N NE NE NE NE NE NE  E  E  E  E  E SE  E NW
Wind spd         12 14 13 12 11 11 10 10  9 10  9  9  9  9  8  5  6  6  4  4  6
Clouds           OV B2 B1 SC FW FW SC SC B2 B2 B2 OV OV OV OV OV OV OV OV OV B2
PoP 12hr                      0           0          60          50          60
QPF 12hr                      0           0        0.10        0.05        0.06
Snow 12hr                 00-00       00-00           1
Flurries
Frzg rain                                          S  C  C  C     L  L  C  C
Rain                                                           C
Snow                                      S  S  L  L  S
Wind chill       11  5  2 -1 -2  2 15 21 16 13 11 12 12 17 22    26 26       23
Min chill        11     2    -3    -2    14    10    11    12    24    24    22


Date           02/23/18  Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
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      27    41      25    44      26    46      26    47
Temp          37 37 28   31 39 41 32   26 41 42 30   28 44 44 32   27 45 44
Dewpt         30 29 25   26 31 31 26   22 25 26 22   22 28 27 24   22 29 30
PWind dir        NW      NE    NE      NW    SW       S     W      NW    SW
Wind char        LT      LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B1 B1 B1   B1 B2 B2 B2   SC SC SC SC   SC SC SC SC   FW FW FW
PoP 12hr          5      20    80      40     0       0    30       5     5
Rain                         C  D  C                        C
Snow                      S  C     C    S

$$
IAZ017-211000-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
523 PM CST Tue Feb 20 2018

Date           02/20/18      Wed 02/21/18            Thu 02/22/18            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                       4          22          11          28          23
Temp             15 12  9  7  4  8 18 22 15 11 12 13 15 18 25 28 28 29 27 27 23
Dewpt            11  8  6  3  2  4  8  9  9  9  9 11 12 15 19 22 23 26 26 26 23
RH               84 84 87 83 91 83 64 57 77 91 87 91 88 88 78 78 81 88 96 96100
Wind dir         NW NW NW NW NW NW  N  N  E  E  E  E  E  E  E  E  E SE SE  S  W
Wind spd         13 13 12 10  6  5  5  3  4  4  5  5  6  9 10 10  9  9  6  4  6
Clouds           OV B1 SC FW CL CL CL FW SC B1 B2 B2 B2 B2 OV OV OV OV OV OV B2
PoP 12hr                      0           0          20          40          70
QPF 12hr                      0           0           0        0.02        0.14
Snow 12hr                 00-00       00-00       00-00
Flurries
Frzg rain                                                      C  S     C  C
Snow                                            S  S  S  S  C  C  L  L  S
Wind chill        0 -3 -7 -8 -8 -2 10     8  3  4  4  5  7 16 19 19 20 20    15
Min chill         0    -7    -9    -8     6     3     3     3    17    18    14


Date           02/23/18  Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
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          32      16    32      19    34      17    34      18    34
Temp          30 28 22   17 30 30 24   20 32 32 22   18 33 30 24   18 33 30
Dewpt         27 25 19   16 24 26 21   18 24 24 18   16 25 24 20   16 24 25
PWind dir        NW       N    NE      NW     W      SW     W      NW    SW
Wind char        LT      LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B2 B1 B1   B1 B1 B2 B2   B1 SC SC SC   SC B1 SC SC   SC SC SC
PoP 12hr          5       5    70      50     0       5    20      20    10
Snow                            L  C                        S  S

$$
IAZ049-211000-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
523 PM CST Tue Feb 20 2018

Date           02/20/18      Wed 02/21/18            Thu 02/22/18            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                       8          24          17          31          26
Temp             20 17 13 10  8 10 19 24 19 17 18 18 19 22 28 31 29 28 30 28 26
Dewpt            15 12  9  7  6  6  9 11 12 13 12 15 16 18 21 24 26 27 28 27 26
RH               81 80 84 87 91 83 64 57 74 84 77 88 88 84 75 75 88 96 92 96100
Wind dir         NW NW NW NW NW  N  N  N NE NE  E  E NE  E  E  E  E SE SE  S NW
Wind spd         13 13 14 11  9  8  8  6  6  6  8  6  9 10 10  9  8  8  5  4  5
Clouds           OV B2 B1 FW FW CL CL SC B1 B2 B2 B2 OV OV OV OV OV OV OV OV OV
PoP 12hr                      0           0          40          40          70
QPF 12hr                      0           0        0.02        0.06        0.11
Snow 12hr                 00-00       00-00           T
Flurries
Frzg rain                                                   S  C  L  L  C  C
Sleet                                                                S
Snow                                            C  C  C  C  C     L
Wind chill        7  3 -2 -5 -5 -2  9 16 10  8  8  9  8 11 19 23 21 20 24    19
Min chill         7    -3    -6    -5    10     8     7     8    18    17    19


Date           02/23/18  Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
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      21    37      22    38      20    39      21    39
Temp          34 31 23   22 35 35 26   23 36 35 24   22 37 37 27   22 37 35
Dewpt         29 27 22   20 27 28 23   21 25 25 20   19 27 27 22   19 27 26
PWind dir        NW       N    NE      NW     W      SW    SW      NW    NW
Wind char        LT      LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B2 B1 SC   SC B1 B2 B2   B1 SC SC SC   SC SC SC SC   FW FW SC
PoP 12hr         10       5    70      40     0       5    20      20    10
Rain                            L  C                        S  S
Snow                         S  L  C    C                      S

$$
IAZ086-211000-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
523 PM CST Tue Feb 20 2018

Date           02/20/18      Wed 02/21/18            Thu 02/22/18            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                      14          30          23          35          30
Temp             26 23 19 16 14 16 25 30 25 23 23 23 23 27 32 35 34 33 33 33 30
Dewpt            19 16 14 11  9 10 11 14 14 15 16 18 19 22 25 26 28 30 30 31 30
RH               74 74 80 80 80 77 55 51 62 71 74 81 84 81 75 69 78 89 89 92100
Wind dir         NW NW NW  N  N  N  N  N NE NE NE NE NE  E  E  E  E  E SE SE NW
Wind spd         13 14 14 13 12 11 11  9  9  9  9 10 10 11  9  8  8  8  5  4  5
Clouds           OV OV B2 SC SC FW FW B1 B1 B2 B2 B2 OV OV OV OV OV OV OV OV OV
PoP 12hr                     10           0          40          50          60
QPF 12hr                      0           0        0.02        0.05        0.10
Snow 12hr                 00-00       00-00           T
Flurries
Frzg rain                                                C  C     S  S  S  L
Rain                                                           C  L  L  L  L
Snow                                            C  C  C  S
Wind chill       14 10  5  2  0  3 14 21 16 13 13 12 13 16 24 28 27 26       24
Min chill        13     4    -1     0    14    12    11    13    25    25    23


Date           02/23/18  Sat 02/24/18  Sun 02/25/18  Mon 02/26/18  Tue 02/27/18
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      27    42      27    44      26    47      27    47
Temp          40 37 29   29 40 41 34   28 42 41 30   28 46 42 33   28 46 42
Dewpt         32 30 27   26 32 32 28   24 27 27 23   23 29 28 26   23 30 29
PWind dir        NW       N     E      NW     W       S    SW      NW    SW
Wind char        LT      LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B2 B1 B1   B1 B2 B2 B2   SC SC SC SC   SC SC SC SC   FW FW FW
PoP 12hr         10      20    70      40     0       5    20      20     0
Rain                         S  L  C                        S  S
Snow                      S  S     C    C                      S

$$



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