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Issued by NWS Des Moines, IA

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

IAZ060-211000-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
907 PM CDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
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                      67          89          73          93          71
Temp                72 70 67 67 74 84 89 85 79 77 75 73 81 90 93 86 78 76 73 72
Dewpt               64 63 63 65 69 72 72 71 71 69 69 68 69 70 69 68 68 67 66 65
RH                  76 78 87 93 84 67 57 63 77 76 82 84 67 52 46 55 71 74 79 79
Wind dir             N NE  E  E SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd             5  6  5  6  9 13 17 11 10 10  8  9 12 13 13 10  8  8  6  6
Wind gust                                               23 24 24
Clouds              FW SC B1 B1 B1 SC SC FW FW SC SC SC SC FW FW FW FW FW FW SC
PoP 12hr                     20          20          10           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                    S
Tstms                         S
Heat index                         90 96 90                96 98
Max heat                           91    96    90          97    99    87


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          91      71    90      65    82      61    73      54    72
Temp          89 85   76 72 89 84   71 66 81 76   65 62 72 70   61 55 70 69
Dewpt         67 66   65 63 66 64   64 62 64 63   62 60 61 58   55 52 53 52
PWind dir         S       S     S       S     S      SW    NW      NW    NW
Wind char        GN      LT    GN      LT    LT      LT    LT      LT    LT
Avg clouds    FW SC   SC FW FW SC   SC SC B1 B1   B2 B2 B2 B2   B2 B1 B1 SC
PoP 12hr          5       5     5      20    40      50    30      30    10
Rain shwrs                              S  C  C    C  C  C  C    C
Tstms                                   S  C  C    C  C  C  C    C

$$
IAZ039-211000-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
907 PM CDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
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                      60          87          69          91          68
Temp                69 65 61 61 71 82 87 83 77 74 71 70 79 88 91 84 77 73 70 69
Dewpt               65 63 58 59 65 69 70 69 69 67 67 66 69 68 67 67 66 65 64 64
RH                  87 93 90 93 81 65 57 63 76 79 87 87 72 52 45 57 69 76 81 84
Wind dir             N NE NE  E SE SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd             5  4  4  6  9 12 14 10  9  9  8  8 11 14 14 10  8  8  6  6
Wind gust                                                  25
Clouds              SC SC SC B1 B1 SC SC FW FW SC SC SC SC FW FW CL FW FW FW SC
PoP 12hr                     10          10          10           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs
Tstms
Heat index                            92
Max heat                           85    92    84          93    94    85


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          90      66    88      63    82      60    73      52    70
Temp          88 83   72 67 87 80   68 64 81 75   66 60 72 68   59 53 68 67
Dewpt         66 65   63 62 64 63   62 60 62 62   62 58 61 58   55 51 53 52
PWind dir         S       S     S       S     S      SW    NW      NW    NW
Wind char        GN      LT    GN      LT    LT      LT    LT      LT    GN
Avg clouds    FW SC   SC SC SC SC   SC SC B1 B1   B1 B2 B2 B2   B2 B1 B1 B1
PoP 12hr          5       5     5      20    30      50    40      40     5
Rain shwrs                              S  C  C    C  C  C  C    C
Tstms                                   S  C  C    C  C  C  C    C

$$
IAZ048-211000-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
907 PM CDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
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                      62          88          70          91          68
Temp                69 66 62 63 72 83 88 84 77 74 72 70 79 87 91 84 76 73 71 68
Dewpt               61 60 59 62 67 71 71 70 70 69 69 68 70 70 68 68 67 67 66 65
RH                  76 81 90 97 84 67 57 63 79 84 90 93 74 57 47 59 74 81 84 90
Wind dir             N NE NE  E SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd             5  5  5  6  9 12 16 10  9  9  8  9 12 13 13 10  9  8  8  6
Wind gust                                                  24 25
Clouds              FW SC B1 B1 B1 SC SC FW FW SC SC SC SC FW FW FW FW FW FW SC
PoP 12hr                     10          20          10           5           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                   92
Max heat                           89    95    86          93    97    84


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          90      67    87      63    81      59    72      52    70
Temp          87 83   73 68 86 81   69 64 80 74   65 59 71 69   59 53 68 67
Dewpt         67 66   65 63 65 64   63 61 64 63   62 58 60 58   55 51 53 52
PWind dir         S       S     S       S     S       S    NW      NW    NW
Wind char        GN      LT    GN      LT    LT      LT    LT      LT    LT
Avg clouds    FW SC   SC SC SC SC   SC B1 B1 B1   B2 B2 B2 B2   B2 B1 B1 SC
PoP 12hr          5       5     5      20    40      50    30      30    10
Rain shwrs                              S  C  C    C  C  C  C    C
Tstms                                   S  C  C    C  C  C  C    C

$$
IAZ004-211000-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
907 PM CDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
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                      51          83          69          88          68
Temp                59 54 53 52 66 76 83 79 74 73 72 69 75 84 88 82 76 73 70 68
Dewpt               50 49 50 50 59 66 68 70 68 69 69 68 71 71 69 69 66 67 67 66
RH                  72 83 89 93 78 71 61 74 82 87 90 97 87 65 54 65 71 81 90 93
Wind dir            NE  E  E  E SE SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd             3  4  5  6 11 16 18 10 10 12 11 11 14 17 18 13 13 12 10  9
Wind gust                                      23 23    25 28 28 24 25
Clouds              CL CL CL FW SC SC SC SC SC SC SC SC SC FW SC SC SC B1 SC B1
PoP 12hr                      5           5          10           5          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Heat index                                                 89
Max heat                                 87                89    94    83


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          83      65    78      59    72      52    65      48    66
Temp          82 78   70 65 77 74   64 59 71 69   59 52 64 62   54 49 64 63
Dewpt         68 65   64 63 65 63   60 59 62 61   56 52 53 53   50 47 50 51
PWind dir         S       S    SW       E     N       N     N      NW    NW
Wind char        GN      GN    GN      LT    LT      LT    GN      LT    GN
Avg clouds    B1 B1   B1 B1 B1 B1   B2 B2 B2 OV   OV OV B2 B2   B2 B1 SC SC
PoP 12hr         10      20    30      30    50      50    30      20    10
Rain shwrs             S  S  C  C    C  C  C  C    C  C  C          S
Tstms                  S  S  C  C    C  C  C  C    C  C  C          S

$$
IAZ035-211000-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
907 PM CDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
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                      58          87          72          91          70
Temp                63 60 58 59 70 82 87 84 77 76 73 72 78 87 91 84 77 75 72 70
Dewpt               55 54 53 55 62 68 69 69 69 69 68 68 69 70 68 67 67 67 66 65
RH                  75 81 83 87 76 63 55 61 76 79 84 87 74 57 47 57 71 76 81 84
Wind dir            NE NE  E  E SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd             4  5  5  8 10 13 17 12 12 11 11 11 14 16 16 13 13 11 10 10
Wind gust                                   23          25 27 27
Clouds              CL FW FW SC B1 SC SC SC FW SC SC SC SC FW FW FW FW SC FW SC
PoP 12hr                     10          10          10           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Heat index                                                 92
Max heat                           85    91    85          93    96    85


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          88      68    85      62    78      56    68      50    69
Temp          85 81   73 69 84 79   69 63 77 71   63 56 67 65   57 51 67 65
Dewpt         67 66   65 63 65 63   63 61 64 62   59 55 57 55   53 49 51 51
PWind dir         S       S     S      SE     S      NE     N      NW    NW
Wind char        GN      GN    GN      LT    LT      LT    GN      LT    GN
Avg clouds    SC SC   SC SC SC SC   B1 B1 B2 B2   B2 OV B2 B2   B2 B1 B1 SC
PoP 12hr         10       5    10      20    50      50    30      20    10
Rain shwrs                           S  S  C  C    C  C  C  S    S
Tstms                                S  S  C  C    C  C  C  S    S

$$
IAZ094-211000-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
907 PM CDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
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                      68          88          69          89          67
Temp                73 71 69 69 75 85 88 83 76 75 72 69 78 86 89 82 74 73 70 68
Dewpt               69 68 67 67 71 72 72 71 70 69 68 67 69 69 68 68 67 67 66 65
RH                  87 90 93 93 87 65 59 67 82 82 87 93 74 57 50 63 79 81 87 90
Wind dir            NE NE  E SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd             5  5  5  6 10 13 16 11  9  9  8  9 11 13 12  9  8  8  6  6
Clouds              B1 B2 B2 B1 B1 SC SC FW FW SC SC SC FW FW FW FW FW FW FW SC
PoP 12hr                     40          20          10           5           5
QPF 12hr                   0.14        0.01           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs           S  C  C  S
Tstms                S  C  C  S
Heat index                         91 95 88
Max heat                           91    95    85          91    94    83


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          88      67    85      64    81      61    74      54    72
Temp          86 81   72 68 84 78   68 65 80 76   66 62 73 70   60 55 70 68
Dewpt         67 66   65 63 65 65   64 62 65 64   62 60 62 59   56 53 53 52
PWind dir         S       S     S       S     S      SW    NW       N    NW
Wind char        GN      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW   FW FW FW SC   SC SC B1 B1   B1 B2 B2 B2   B1 SC SC SC
PoP 12hr          5       5     5      10    40      40    30      20    10
Rain shwrs                                 C  C    C  C  C  C    S
Tstms                                      C  C    C  C  C  C    S

$$
IAZ017-211000-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
907 PM CDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
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                      53          83          69          90          68
Temp                61 57 55 54 67 77 83 80 74 73 71 70 79 87 90 82 74 72 70 68
Dewpt               56 54 52 53 61 66 69 70 68 68 67 67 70 69 67 67 66 65 65 66
RH                  84 90 90 96 81 69 63 72 82 84 87 90 74 55 47 61 76 79 84 93
Wind dir             N NE NE  E SE SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd             4  4  5  6 11 13 16 10 10 10 10 10 14 17 17 12 12 11 10  9
Wind gust                                               25 27 27
Clouds              CL FW CL SC SC SC SC SC FW SC SC SC SC SC FW FW FW SC FW SC
PoP 12hr                      5           5          10           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          89      66    84      62    79      56    69      50    68
Temp          88 82   72 67 83 79   68 63 78 71   62 56 68 65   57 51 66 65
Dewpt         67 66   64 63 64 62   63 61 63 62   60 56 58 55   53 49 51 51
PWind dir         S       S     S       S     S      NW    NW      NW    NW
Wind char        GN      GN    GN      LT    LT      LT    GN      LT    GN
Avg clouds    SC SC   SC SC SC SC   SC B1 B1 B2   B2 OV B2 B2   B2 B1 B1 SC
PoP 12hr         10       5    10      20    50      50    40      20    10
Rain shwrs                           S  S  C  C    C  C  C  S    S  S
Tstms                                S  S  C  C    C  C  C  S    S  S

$$
IAZ049-211000-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
907 PM CDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
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                      63          87          69          90          67
Temp                68 65 64 64 73 82 87 82 76 74 71 70 80 87 90 83 75 72 69 68
Dewpt               64 63 60 61 67 70 71 70 69 68 67 66 69 68 67 67 66 66 65 64
RH                  87 93 87 90 81 67 59 67 79 82 87 87 69 53 47 59 74 81 87 87
Wind dir             N NE NE  E SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd             5  6  6  6  9 12 16  9  9  9  8  9 11 13 14  9  9  8  6  6
Wind gust                                                  24
Clouds              SC SC B1 B1 B1 SC SC FW FW SC SC SC FW FW FW CL FW FW FW SC
PoP 12hr                     20          20          10           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                    S
Tstms                         S
Heat index                            93
Max heat                           86    93    83          92    94    82


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          89      66    88      62    81      59    72      51    70
Temp          87 82   72 67 87 81   68 63 80 75   64 60 71 68   58 52 68 66
Dewpt         66 65   64 62 63 63   62 60 63 62   61 58 61 58   55 51 53 52
PWind dir         S       S     S       S     S      SW    NW      NW    NW
Wind char        GN      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW SC   SC SC FW SC   SC SC B1 B1   B2 B2 B2 B2   B2 B1 B1 SC
PoP 12hr          5       5     5      20    30      50    30      30     5
Rain shwrs                              S  C  C    C  C  C  C    C
Tstms                                   S  C  C    C  C  C  C    C

$$
IAZ086-211000-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
907 PM CDT Wed Sep 20 2017

Date           09/20/17      Thu 09/21/17            Fri 09/22/17            Sat
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
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                      67          89          69          91          67
Temp                74 72 69 67 75 85 89 84 76 74 72 69 80 88 91 84 75 72 69 68
Dewpt               71 69 68 67 71 72 71 70 69 67 67 66 69 69 67 67 65 65 64 64
RH                  90 90 97100 87 65 56 63 79 79 84 90 69 54 45 57 71 79 84 87
Wind dir            NE  E  E SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd             5  5  5  5  9 12 14  9  8  8  6  8 10 11 11  8  6  6  5  5
Clouds              B1 B2 B2 B1 B1 SC SC SC FW SC SC SC FW FW FW FW FW FW FW SC
PoP 12hr                     40          20          10           5           5
QPF 12hr                   0.25           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs           C  C  C  S
Tstms                C  C  C  S
Heat index                         91 95 89                93
Max heat                           92    95    86          94    95    83


Date           09/23  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          90      67    87      64    84      61    77      54    72
Temp          88 83   72 68 86 81   70 65 83 78   67 62 76 71   60 55 71 68
Dewpt         66 65   63 63 64 64   62 61 63 62   62 60 63 60   57 53 54 52
PWind dir         S       S     S       S     S      SW     W      NW    NW
Wind char        GN      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW   FW FW FW FW   SC SC SC SC   B1 B1 B2 B2   B1 B1 SC B1
PoP 12hr          5       5     5       5    20      40    40      30     5
Rain shwrs                                 S  S    C  C  S  C    C
Tstms                                      S  S    C  C  S  C    C

$$



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