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Issued by NWS Des Moines, IA

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Point Forecast Matrices
National Weather Service Des Moines IA
108 PM CDT Wed Sep 20 2017

IAZ060-202200-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
108 PM CDT Wed Sep 20 2017

Date             Wed 09/20/17            Thu 09/21/17            Fri 09/22/17
CDT 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      88          67          89          72          91
Temp                      82 80 73 69 67 67 74 84 89 85 79 76 74 72 81 88 91 84
Dewpt                     68 65 63 62 63 65 69 72 72 70 70 68 68 67 69 69 68 68
RH                        63 60 71 78 87 93 84 67 57 61 74 76 82 84 67 54 47 59
Wind dir                  NW  N  N NE  E  E SE  S  S  S  S  S  S  S  S  S  S  S
Wind spd                   8  5  5  6  5  6  9 13 17 12  9 10  8  9 11 14 12 11
Clouds                    SC SC FW SC B1 B1 B1 SC SC FW SC SC SC SC FW FW FW FW
PoP 12hr                     10          20          20          10           5
QPF 12hr                      0        0.03           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                          S  S  S  S
Tstms                               S  S  S  S
Heat index                                     90 96 90
Max heat               90    87                90    96    87          92    95


Date          Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
CDT 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          70    89      68    87      64    81      59    72
Temp          74 70 87 84   73 69 86 81   71 65 80 74   65 59 71 69
Dewpt         67 65 67 66   65 64 65 63   63 61 64 62   62 58 59 56
PWind dir         S     S       S     S       S     S       E    NW
Wind char        GN    GN      LT    GN      LT    LT      LT    LT
Avg clouds    FW FW FW SC   FW FW FW SC   SC B1 B1 B1   B2 B2 B2 B2
PoP 12hr          0     5       5     5      20    40      50    30
Rain shwrs                                    S  C  C    C  C  C  C
Tstms                                         S  C  C    C  C  C  S

$$
IAZ039-202200-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
108 PM CDT Wed Sep 20 2017

Date             Wed 09/20/17            Thu 09/21/17            Fri 09/22/17
CDT 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      85          60          87          69          90
Temp                      80 76 68 64 61 61 71 81 87 82 76 73 71 70 79 87 90 83
Dewpt                     69 67 63 60 58 59 65 69 70 69 68 66 67 66 68 67 66 66
RH                        69 74 84 87 90 93 81 67 57 65 76 79 87 87 69 52 45 57
Wind dir                  NW  N  N NE NE  E SE SE  S  S  S  S  S  S  S  S  S  S
Wind spd                   9  6  5  5  4  6  9 12 14 11  8  9  8  8 11 16 14 11
Wind gust                                                              26
Clouds                    B1 SC SC SC SC B1 B1 SC SC FW FW SC SC SC FW FW FW FW
PoP 12hr                     20          10          10          10           5
QPF 12hr                   0.01           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                 S              S
Tstms                      S              S
Heat index                                        92
Max heat               88    87                85    92    83          91    93


Date          Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
CDT 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          68    89      67    87      63    81      58    73
Temp          73 69 88 83   72 68 86 79   69 64 80 74   64 59 72 69
Dewpt         65 64 65 65   63 63 63 62   61 60 62 61   60 57 57 56
PWind dir         S     S       S     S       S     S       W    NW
Wind char        GN    GN      LT    GN      LT    LT      LT    LT
Avg clouds    FW FW SC SC   SC FW SC SC   SC SC SC B1   B2 B2 B2 B2
PoP 12hr          5     5       5     5      10    30      50    40
Rain shwrs                                       C  C    C  C  C  C
Tstms                                            C  C    C  C  C  S

$$
IAZ048-202200-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
108 PM CDT Wed Sep 20 2017

Date             Wed 09/20/17            Thu 09/21/17            Fri 09/22/17
CDT 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      86          62          88          72          91
Temp                      81 79 68 64 62 64 73 83 88 85 78 76 74 73 81 88 91 84
Dewpt                     65 62 60 60 59 62 67 71 71 70 70 68 68 67 69 69 68 68
RH                        58 56 76 87 90 93 81 67 57 61 76 76 82 81 67 54 47 59
Wind dir                  NW  N  N NE NE  E SE  S  S  S  S  S  S  S  S  S  S  S
Wind spd                   9  6  5  5  5  6  9 12 16 11  9  9  8  9 12 16 14 11
Clouds                    SC FW FW SC B1 B1 B1 SC SC FW SC SC SC SC SC FW FW FW
PoP 12hr                     10          10          20          10           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                S
Tstms                                     S
Heat index                                     88 94
Max heat               86    84                89    95    88          94    96


Date          Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
CDT 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          69    88      66    86      63    80      57    71
Temp          75 69 87 83   72 67 85 79   70 64 79 72   63 57 70 68
Dewpt         67 65 67 66   65 63 65 64   62 61 64 62   60 57 58 56
PWind dir         S     S       S     S       S     S       N    NW
Wind char        GN    GN      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW SC SC   SC SC SC SC   SC B1 B1 B2   B2 B2 B2 B2
PoP 12hr          5     5       5     5      20    40      40    30
Rain shwrs                                    S  C  C    C  C  C  C
Tstms                                         S  C  C    C  C  C  S

$$
IAZ004-202200-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
108 PM CDT Wed Sep 20 2017

Date             Wed 09/20/17            Thu 09/21/17            Fri 09/22/17
CDT 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      75          51          83          71          90
Temp                      74 69 59 55 53 53 66 76 83 82 76 74 74 71 78 86 90 84
Dewpt                     51 52 52 51 50 50 59 66 68 69 69 68 68 67 69 69 67 68
RH                        44 55 78 86 89 89 78 71 61 65 79 82 82 87 74 57 47 59
Wind dir                  NW  N  E  E  E  E SE SE  S  S  S  S  S  S  S  S  S  S
Wind spd                   8  4  3  4  5  6 11 16 18 12 12 12 12 11 16 20 19 13
Wind gust                                                  25 25       31 29
Clouds                    CL CL CL CL CL FW SC SC SC SC SC SC SC B1 SC FW SC SC
PoP 12hr                      5           0           5          20           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                            S  S                    S
Tstms                                                 S  S                    S


Date          Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
CDT 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          70    84      62    79      58    69      51    65
Temp          75 70 83 79   69 63 78 73   63 58 69 65   58 51 64 62
Dewpt         67 65 66 67   63 62 64 63   60 58 62 59   55 51 52 52
PWind dir         S     S       S     S      SE    SW      NW    NW
Wind char        GN    GN      LT    GN      LT    LT      LT    GN
Avg clouds    SC B1 B1 B1   B1 B1 B1 B1   B1 B2 B2 OV   B2 B2 B2 B2
PoP 12hr         20    40      40    30      40    60      30    20
Rain shwrs     S  S  S  C    C  S  S  C    C  C  L  C    S  C  S
Tstms          S  S  S  S    C  S  S  C    C  C  C  C    S  C  S

$$
IAZ035-202200-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
108 PM CDT Wed Sep 20 2017

Date             Wed 09/20/17            Thu 09/21/17            Fri 09/22/17
CDT 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      80          58          87          72          91
Temp                      79 73 63 60 58 59 70 81 87 83 78 76 73 72 78 86 91 83
Dewpt                     57 56 55 55 53 55 62 68 69 68 69 68 67 67 68 69 67 67
RH                        47 55 75 84 83 87 76 65 55 61 74 76 81 84 71 57 45 59
Wind dir                   N  N NE  E  E  E SE  S  S  S  S  S  S  S  S  S  S  S
Wind spd                   8  4  4  4  5  8 10 13 17 13 12 12 11 12 14 17 17 13
Wind gust                                                  23 23
Clouds                    FW CL CL FW FW SC B1 SC SC SC SC SC SC SC SC FW FW FW
PoP 12hr                      5           5          10          20           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                            S  S
Tstms                                                 S  S


Date          Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
CDT 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          70    87      68    85      62    76      55    68
Temp          75 71 86 82   74 69 84 78   68 63 76 69   60 55 66 66
Dewpt         67 65 66 65   64 62 63 62   62 60 64 61   58 53 55 53
PWind dir         S     S       S     S       S     S       N    NW
Wind char        GN    GN      GN    GN      LT    LT      LT    GN
Avg clouds    FW SC SC SC   SC SC SC SC   SC B1 B2 B2   B2 B2 B2 B2
PoP 12hr          5    10      10    10      30    50      40    30
Rain shwrs                                    C  C  C    C  C  C  S
Tstms                                         C  C  C    C  C  C  S

$$
IAZ094-202200-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
108 PM CDT Wed Sep 20 2017

Date             Wed 09/20/17            Thu 09/21/17            Fri 09/22/17
CDT 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      86          68          88          70          89
Temp                      84 79 72 70 69 69 75 84 88 83 77 75 72 70 79 87 88 82
Dewpt                     71 70 67 67 67 67 71 72 72 71 70 68 68 67 69 69 68 68
RH                        65 74 84 90 93 93 87 67 59 67 79 79 87 90 72 55 52 63
Wind dir                  SW  N NE NE  E SE  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd                   9  5  5  6  5  6 10 13 16 11  8  9  8  9 11 13 12 10
Clouds                    B1 B1 B1 B2 B2 B1 B1 SC SC FW SC SC SC SC FW FW FW FW
PoP 12hr                     10          40          30           5           5
QPF 12hr                      0        0.16        0.01           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                       C  C  C  C  S
Tstms                            C  C  C  C  S
Heat index                89                   90 95 88
Max heat               92    91                91    95    85          91    93


Date          Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
CDT 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          69    87      66    85      64    81      59    74
Temp          73 69 86 82   72 67 84 79   69 65 80 75   64 60 73 70
Dewpt         67 65 67 66   65 64 65 64   63 61 64 63   62 58 60 57
PWind dir         S     S       S     S       S     S      SW    NW
Wind char        GN    GN      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW FW FW   FW FW FW SC   SC SC B1 B1   B2 B2 B2 B2
PoP 12hr          0     5       5     5      10    40      50    40
Rain shwrs                                       C  C    C  C  C  C
Tstms                                            C  C    C  C  C  S

$$
IAZ017-202200-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
108 PM CDT Wed Sep 20 2017

Date             Wed 09/20/17            Thu 09/21/17            Fri 09/22/17
CDT 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      81          53          83          71          89
Temp                      76 74 62 57 55 54 67 77 83 82 76 75 73 72 79 86 89 83
Dewpt                     59 57 55 53 52 53 61 66 69 69 69 67 67 67 69 68 66 67
RH                        56 55 78 86 90 96 81 69 63 65 79 76 81 84 72 55 47 59
Wind dir                  NW  N  N NE NE  E SE SE  S  S  S  S  S  S  S  S  S  S
Wind spd                  10  5  4  4  5  6 11 13 16 12 11 11 11 10 14 18 17 13
Clouds                    FW CL CL FW CL SC SC SC SC SC SC SC SC SC SC FW FW FW
PoP 12hr                     10           5           5          10           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs


Date          Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
CDT 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          70    87      68    84      61    77      55    68
Temp          75 71 86 81   74 69 83 78   68 62 77 68   60 55 67 64
Dewpt         65 65 66 65   64 63 63 62   62 60 63 61   59 54 55 54
PWind dir         S     S       S     S       S    SW      NW    NW
Wind char        GN    GN      GN    GN      LT    GN      LT    GN
Avg clouds    FW SC SC SC   SC SC SC SC   SC B1 B1 B2   B2 B2 B2 B2
PoP 12hr          5    20       5    10      30    50      40    30
Rain shwrs              S                     C  C  C    C  C  C  S
Tstms                   S                     C  C  C    C  C  C  S

$$
IAZ049-202200-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
108 PM CDT Wed Sep 20 2017

Date             Wed 09/20/17            Thu 09/21/17            Fri 09/22/17
CDT 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      84          63          87          70          90
Temp                      80 76 69 66 64 63 73 82 87 83 76 74 72 71 80 87 90 84
Dewpt                     69 66 63 61 60 61 67 70 71 69 68 67 66 66 68 67 66 66
RH                        69 71 81 84 87 93 81 67 59 63 76 79 81 84 67 52 45 55
Wind dir                  NW  N  N NE NE  E SE  S  S  S  S  S  S  S  S  S  S  S
Wind spd                   9  6  5  6  6  6  9 12 16 10  9  9  8  8 11 14 14 10
Clouds                    B1 SC SC SC B1 B1 B1 SC SC FW FW SC SC SC FW FW FW FW
PoP 12hr                     20          10          20          10           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                 S              S
Tstms                      S              S
Heat index                                        93
Max heat               87    85                86    93    85          91    93


Date          Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
CDT 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          69    89      66    86      62    80      57    72
Temp          74 70 88 83   71 67 85 79   69 63 79 73   63 58 71 66
Dewpt         65 64 65 65   64 62 63 63   61 60 63 62   61 56 58 56
PWind dir         S     S       S     S       S     S       W    NW
Wind char        GN    GN      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW FW SC   SC FW FW SC   SC SC B1 B1   B2 B2 B2 B2
PoP 12hr          5     5       5     5      20    30      50    40
Rain shwrs                                    S  C  C    C  C  C  C
Tstms                                         S  C  C    C  C  C  S

$$
IAZ086-202200-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
108 PM CDT Wed Sep 20 2017

Date             Wed 09/20/17            Thu 09/21/17            Fri 09/22/17
CDT 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
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                      88          67          89          69          91
Temp                      87 80 74 71 69 68 75 85 89 84 76 74 72 70 81 89 91 84
Dewpt                     72 72 70 69 68 67 71 72 71 69 68 66 66 66 69 68 66 66
RH                        61 77 87 93 97 97 87 65 56 61 76 76 81 87 67 50 44 55
Wind dir                  SW  W  S  E  E SE  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd                  11  6  5  5  5  5  9 12 14 10  8  6  6  6 10 13 11  9
Clouds                    B1 B1 B1 B2 B2 B1 B1 SC SC FW FW SC FW FW FW FW FW FW
PoP 12hr                     20          40          20           5           5
QPF 12hr                   0.01        0.31           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                    S  C  C  C
Tstms                         S  C  C  C
Heat index                94                   91 95
Max heat               94    95                92    95    84          93    94


Date          Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
CDT 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          68    90      66    88      64    83      60    76
Temp          73 69 89 83   72 67 87 81   70 65 82 76   65 61 75 70
Dewpt         65 64 66 65   63 63 64 63   61 61 62 62   62 59 60 58
PWind dir         S     S       S     S       S     S      SW     W
Wind char        LT    GN      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW FW FW   FW FW FW SC   SC SC SC B1   B1 B2 B2 B2
PoP 12hr          0     5       5     5       5    20      30    40
Rain shwrs                                       S  S    C  C  C  C
Tstms                                            S  S    C  C  C  C

$$



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