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Issued by NWS Des Moines, IA

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Point Forecast Matrices
National Weather Service Des Moines IA
207 AM CDT Wed Sep 20 2017

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

Date           09/19/17      Wed 09/20/17            Thu 09/21/17            Fri
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                      70          88          64          89          72
Temp                      74 72 80 82 85 79 70 66 65 65 74 84 89 85 78 76 73 72
Dewpt                     67 67 69 65 61 60 59 59 60 61 66 70 70 70 69 68 67 67
RH                        79 84 69 56 45 52 68 78 84 87 76 63 54 61 74 76 81 84
Wind dir                   S  S SW  W NW  N NE NE  E SE SE  S  S  S  S  S  S  S
Wind spd                  10  9 10  9  8  4  4  4  5  5  9 12 13 10 10 10  9 10
Wind gust                                                  23 25
Clouds                    SC SC SC SC FW FW FW SC SC B1 B1 SC FW SC FW SC FW SC
PoP 12hr                     10          10          20          20          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                      S  S  S  S
Tstms                                           S  S  S  S
Heat index                                                 89 94
Max heat                           90    86                90    95    87


Date           09/22  Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
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      70    88      64    79      57    72
Temp          88 85   76 72 89 86   75 71 87 82   70 65 78 73   63 58 70 69
Dewpt         69 68   66 65 66 65   65 63 65 63   62 61 63 61   59 56 57 55
PWind dir         S       S     S       S     S       S    SW      NW    NW
Wind char        GN      GN    GN      LT    GN      LT    LT      LT    LT
Avg clouds    SC FW   FW FW FW FW   FW SC SC SC   SC B1 B1 B2   B2 B2 B2 B2
PoP 12hr          5       5     5       5     5      30    50      50    40
Rain shwrs                                         S  C  S  C    C  C  C  S
Tstms                                              S  C  S  C    C  C  C  S

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

Date           09/19/17      Wed 09/20/17            Thu 09/21/17            Fri
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          85          59          87          69
Temp                      69 69 77 82 83 77 67 62 59 61 71 83 87 82 75 73 71 70
Dewpt                     65 65 67 68 64 62 60 58 56 56 62 66 67 68 68 66 66 65
RH                        87 87 71 63 53 60 78 87 90 84 73 57 52 63 79 79 84 84
Wind dir                  SE  S  S  W NW NW  N NE NE  E SE SE  S  S  S  S  S  S
Wind spd                  11 10 11 10  9  5  3  3  3  4  8 10 13 10  9  9  6  9
Wind gust                                                     24
Clouds                    B1 B1 B1 SC SC FW FW SC SC SC SC SC FW FW FW SC FW SC
PoP 12hr                     20          10          20          10          10
QPF 12hr                   0.02           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                      S  S
Tstms                                           S  S


Date           09/22  Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
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      69    89      66    85      63    79      55    72
Temp          88 84   75 70 88 83   72 67 84 78   68 64 79 71   61 56 70 69
Dewpt         67 66   65 64 65 64   63 62 63 62   61 60 61 61   59 54 55 54
PWind dir         S       S     S       S     S       S    SW      NW    NW
Wind char        GN      GN    GN      LT    GN      LT    LT      LT    LT
Avg clouds    FW FW   FW FW FW FW   FW SC SC SC   SC SC B1 B1   B2 B2 B2 B2
PoP 12hr          5       5     5       5     5      20    40      50    30
Rain shwrs                                            S  C  C    C  C  C  C
Tstms                                                 S  C  C    C  C  C  C

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

Date           09/19/17      Wed 09/20/17            Thu 09/21/17            Fri
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          86          60          88          70
Temp                      72 71 77 80 84 77 66 63 60 62 73 83 88 83 77 74 71 70
Dewpt                     67 67 68 64 60 60 57 57 57 58 64 69 70 69 69 68 67 66
RH                        84 87 74 58 44 56 73 81 90 87 73 63 55 63 76 82 87 87
Wind dir                   S  S SW NW NW  N  N NE  E  E SE  S  S  S  S  S  S  S
Wind spd                  10  8  9  9  8  4  3  3  4  5  9 12 13 10 10  9  8  9
Wind gust                                                  23 26
Clouds                    SC SC SC SC FW FW CL FW SC B1 SC SC FW SC FW SC SC SC
PoP 12hr                     10          10          20          10          10
QPF 12hr                      0           0        0.01           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                      S  S
Tstms                                           S  S
Heat index                                                    93
Max heat                           85    84                87    93    85


Date           09/22  Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
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      69    88      67    85      62    77      55    71
Temp          87 83   74 70 87 83   74 68 84 79   69 63 77 70   60 56 69 68
Dewpt         69 68   67 65 66 66   64 62 65 63   62 60 64 61   58 55 57 55
PWind dir         S       S     S       S     S       S    SW      NW    NW
Wind char        GN      GN    GN      LT    GN      LT    LT      LT    LT
Avg clouds    SC FW   FW FW FW SC   SC SC SC SC   B1 B1 B1 B2   B2 B2 B2 B2
PoP 12hr          5       5     5       5     5      40    60      50    40
Rain shwrs                                         S  C  C  L    C  C  C  S
Tstms                                              S  C  C  L    C  C  C  S

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

Date           09/19/17      Wed 09/20/17            Thu 09/21/17            Fri
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          75          53          83          69
Temp                      68 65 66 73 75 70 60 56 54 54 68 78 83 80 75 73 72 69
Dewpt                     66 62 59 54 50 52 50 49 49 50 57 64 66 68 68 68 66 66
RH                        93 90 78 51 41 53 69 77 83 86 68 62 57 67 79 84 81 90
Wind dir                   S  W NW NW  W  W SE SE SE SE SE SE  S  S  S  S  S  S
Wind spd                  11  8 10 11  9  3  2  3  4  5 11 13 16 11 11 12 12 12
Wind gust                                                                 24
Clouds                    B1 B1 FW FW CL CL CL FW CL FW SC SC SC SC SC SC FW SC
PoP 12hr                     40           5           5           5          20
QPF 12hr                   0.07           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                 C                                      S  S
Tstms                      S                                      S  S


Date           09/22  Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
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    81      62    79      57    65      50    65
Temp          85 82   74 67 80 76   66 63 78 74   64 57 65 62   57 50 63 62
Dewpt         69 68   66 64 66 66   63 61 64 63   59 57 58 56   53 50 52 52
PWind dir         S       S    SW       S     S       S     W       N     N
Wind char        BZ      GN    GN      LT    GN      LT    GN      LT    GN
Avg clouds    SC SC   SC B1 B1 B2   B2 B1 B1 B1   B2 B2 OV OV   B2 B2 B2 B2
PoP 12hr          5      10    40      50    40      50    60      20    30
Rain shwrs                      C    C  C  S  C    C  C  L  C    S  S  S  C
Tstms                           C    C  C  S  C    C  C  L  C    S  S  S  C

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

Date           09/19/17      Wed 09/20/17            Thu 09/21/17            Fri
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          80          58          87          71
Temp                      73 70 71 77 80 74 64 61 58 59 71 83 87 82 76 75 72 72
Dewpt                     67 66 65 59 55 55 53 53 52 54 60 67 69 68 68 68 66 66
RH                        81 87 81 54 42 51 67 75 80 83 68 59 55 63 76 79 81 81
Wind dir                   S  S  W NW NW  N NE  E  E  E SE  S  S  S  S  S  S  S
Wind spd                  12  8  8 10  8  3  3  3  4  6 10 13 14 13 13 12 11 11
Wind gust                                                  24 25
Clouds                    B1 B1 SC FW FW CL CL FW FW SC SC SC FW SC SC SC SC SC
PoP 12hr                     20           5          10          10          20
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           09/22  Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
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      70    86      66    83      61    72      53    69
Temp          87 83   76 71 85 80   72 67 82 76   67 61 72 65   58 54 67 66
Dewpt         69 67   66 65 66 65   64 62 64 63   61 59 62 58   55 52 53 53
PWind dir         S       S     S       S     S       S    SW      NW    NW
Wind char        GN      GN    GN      GN    GN      LT    LT      LT    GN
Avg clouds    SC FW   SC SC SC SC   SC SC SC SC   B1 B2 B2 B2   B2 B2 B2 B2
PoP 12hr          5       5    10      10    20      50    50      50    20
Rain shwrs                                 S  S    C  C  C  C    C  C  S  S
Tstms                                      S  S    C  C  C  C    C  C  S  S

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

Date           09/19/17      Wed 09/20/17            Thu 09/21/17            Fri
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                      69          86          65          88          70
Temp                      73 71 79 84 85 80 70 67 66 66 74 84 88 82 76 74 71 70
Dewpt                     68 68 69 69 66 65 63 62 63 64 70 71 71 70 68 68 67 67
RH                        84 90 72 61 53 60 78 84 90 93 87 65 57 67 76 82 87 90
Wind dir                   S  S SW  W  W  N NE NE  E SE SE  S  S  S  S  S  S  S
Wind spd                  10  9 10 10  6  4  3  4  4  6 10 12 13 10  9  9  9 10
Wind gust                                                  23 25
Clouds                    SC SC SC SC SC SC SC B1 B2 B1 B1 SC SC FW FW SC FW SC
PoP 12hr                      5          10          40          20          10
QPF 12hr                      0           0        0.07           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                S  S  C  C  S  S
Tstms                                     S  S  C  C  S  S
Heat index                                                 89 94
Max heat                           89    89                90    94    83


Date           09/22  Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
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      69    86      66    84      64    79      57    74
Temp          86 82   74 70 85 81   72 67 83 78   69 65 78 73   62 58 72 70
Dewpt         69 68   66 65 66 65   65 63 65 63   62 61 63 62   60 57 57 56
PWind dir         S       S     S       S     S       S    SW      NW    NW
Wind char        GN      GN    GN      LT    GN      LT    LT      LT    LT
Avg clouds    FW FW   FW FW FW FW   FW FW SC SC   SC SC B1 B2   B2 B2 B2 B2
PoP 12hr          5       5     5       5     5      20    50      50    40
Rain shwrs                                         S     S  C    C  C  C  C
Tstms                                              S     S  C    C  C  C  C

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

Date           09/19/17      Wed 09/20/17            Thu 09/21/17            Fri
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                      65          80          54          85          69
Temp                      69 68 73 77 78 72 61 58 55 56 69 80 85 80 74 72 71 69
Dewpt                     65 66 66 61 57 56 54 52 51 52 59 64 66 68 68 67 66 66
RH                        87 93 79 58 48 57 78 80 86 86 70 58 53 67 82 84 84 90
Wind dir                   S  S SW NW NW NW  N NE  E  E SE SE  S  S  S  S  S  S
Wind spd                  14 10 10 11  9  4  3  3  4  6 11 12 14 11 11 11 11 11
Wind gust                                                     25
Clouds                    B1 B2 B1 SC FW CL CL FW CL SC SC SC SC SC SC SC SC SC
PoP 12hr                     30          10           5           5          10
QPF 12hr                   0.02           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                 S
Tstms                      S


Date           09/22  Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
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      68    87      65    82      60    73      53    67
Temp          86 82   74 69 86 81   72 66 81 75   66 61 73 64   57 54 65 65
Dewpt         68 67   66 64 65 65   63 62 63 62   61 59 62 59   55 52 53 52
PWind dir         S       S     S       S     S       S    SW      NW    NW
Wind char        BZ      GN    GN      GN    GN      LT    LT      LT    GN
Avg clouds    SC SC   FW SC SC SC   SC SC SC SC   B1 B2 B2 B2   B2 B2 B2 B2
PoP 12hr          5       5    10      10    20      50    50      50    20
Rain shwrs                                 S  S    C  C  C  C    C  C  S  S
Tstms                                      S  S    C  C  C  C    C  C  S  S

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

Date           09/19/17      Wed 09/20/17            Thu 09/21/17            Fri
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          84          60          87          69
Temp                      69 69 77 81 83 76 67 63 60 61 72 83 87 82 75 74 71 70
Dewpt                     65 66 67 67 63 62 59 58 57 58 64 67 69 68 68 67 67 65
RH                        87 90 71 63 51 62 75 84 90 90 76 59 55 63 79 79 87 84
Wind dir                  SE  S  S  W NW  N  N NE  E  E SE  S  S  S  S  S  S  S
Wind spd                  10  9 11 10  9  4  4  4  5  5  9 11 13 10  9  9  6  9
Wind gust                                                  21 26
Clouds                    SC SC B1 SC SC FW FW SC SC B1 B1 SC FW FW FW SC FW SC
PoP 12hr                     20          10          20          10          10
QPF 12hr                   0.01           0        0.01           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                      S  S
Tstms                                           S  S


Date           09/22  Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
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      68    87      65    85      62    78      55    71
Temp          87 83   74 69 86 82   71 66 84 79   68 63 78 70   60 56 69 67
Dewpt         67 66   65 63 64 64   63 61 63 62   61 59 62 61   58 54 56 55
PWind dir         S       S     S       S     S       S    SW      NW    NW
Wind char        GN      GN    GN      LT    GN      LT    LT      LT    LT
Avg clouds    SC FW   FW FW FW FW   SC SC SC SC   SC B1 B1 B1   B2 B2 B2 B2
PoP 12hr          5       5     5       5     5      30    50      50    30
Rain shwrs                                            C  C  C    C  C  C  C
Tstms                                                 C  C  C    C  C  C  C

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

Date           09/19/17      Wed 09/20/17            Thu 09/21/17            Fri
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          66          89          69
Temp                      72 71 79 85 86 80 72 68 67 67 74 85 89 83 76 74 72 69
Dewpt                     66 66 69 71 70 68 66 65 65 64 67 70 70 70 67 66 66 66
RH                        81 84 72 63 59 67 81 90 93 90 79 61 54 65 74 76 81 90
Wind dir                   S  S  S SW  W  W  N NE  E SE SE  S  S  S  S  S  S  S
Wind spd                   9  9 11 11  9  5  3  4  5  5  9 11 12  9  8  8  6  8
Wind gust                                                     23
Clouds                    SC FW SC SC B1 B1 B1 B1 B1 B1 B1 SC FW FW FW SC FW FW
PoP 12hr                      5          20          30          10           5
QPF 12hr                      0           0        0.10           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                             S  C  C  C  C
Tstms                                  S  C  C  C  C
Heat index                         90 91                   90 94
Max heat                           91    93                91    94    85


Date           09/22  Sat 09/23/17  Sun 09/24/17  Mon 09/25/17  Tue 09/26/17
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      68    88      66    86      64    81      58    75
Temp          88 84   73 70 87 82   71 67 85 80   69 65 80 74   64 59 73 71
Dewpt         68 66   65 64 65 64   63 62 64 63   62 61 63 61   61 57 57 56
PWind dir         S       S     S       S     S       S     S       W    NW
Wind char        GN      LT    GN      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW   FW FW FW FW   FW FW FW SC   SC SC B1 B1   B1 B2 B2 B2
PoP 12hr          5       5     5       5    10      10    30      40    40
Rain shwrs                                               S  C    C  C  C  S
Tstms                                                    S  C    C  C  C  S

$$



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