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Issued by NWS Des Moines, IA

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Point Forecast Matrices
National Weather Service Des Moines IA
1052 AM CDT Mon Sep 18 2017

IAZ060-182200-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
1052 AM CDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      72          63          85          70          85
Temp                   72 72 69 65 64 63 64 70 79 85 82 76 74 73 70 77 84 85 80
Dewpt                  61 65 64 64 63 62 63 65 68 69 69 68 68 67 67 68 69 69 68
RH                     68 79 84 97 97 97 97 84 69 59 65 76 82 81 90 74 61 59 67
Wind dir                S  S SE SE SE SE SE SE SE SE SE  S  S  S  S  S SW SW  W
Wind spd                9  5  4  3  3  3  3  6  9 11  9 10 11 10  8 10  8  8  4
Wind gust                                                  24
Clouds                 OV OV OV B2 B2 B2 B2 B1 B1 FW FW FW SC SC SC SC B1 B1 B1
PoP 12hr                     60          20          10          20          30
QPF 12hr                   0.24        0.05           0           0        0.02
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              L  L  S                             S  S        C  C  C
Tstms                   C  L  S                             S  S        C  C  C
Heat index                                                             89 91
Max heat                                       83    90    84          90    92


Date          Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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          66    88      69    89      68    84      63    81
Temp          69 67 86 85   75 70 88 84   74 69 83 79   68 64 79 78
Dewpt         65 65 70 69   67 66 68 65   65 63 66 64   63 61 64 62
PWind dir         E    SE       S     S       S     S       S     S
Wind char        LT    GN      GN    GN      GN    GN      LT    GN
Avg clouds    SC SC SC FW   FW FW FW FW   FW SC SC SC   SC B1 B1 B1
PoP 12hr         30     5       5     5      10    10      20    20
Rain shwrs     C  C                                         S  S  S
Tstms          C  S                                            S  S

$$
IAZ039-182200-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
1052 AM CDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      71          58          81          67          85
Temp                   71 71 66 61 60 59 59 67 77 81 76 71 69 68 67 74 83 84 77
Dewpt                  53 56 58 59 59 58 59 62 64 65 66 65 65 65 66 68 68 68 67
RH                     53 59 75 93 96 96100 84 64 58 71 81 87 90 97 82 61 59 71
Wind dir               SE SE SE  E  E  E  E SE SE SE SE SE SE  S  S  S  S SW  W
Wind spd                9  5  4  4  3  3  3  5  8  9  9 10 11 10  9 11 10  8  4
Clouds                 B2 OV OV B2 B1 B1 B2 B1 SC SC SC SC SC SC B1 SC B1 B1 B1
PoP 12hr                     50          30          10          20          30
QPF 12hr                   0.05        0.04           0        0.01        0.07
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              C  C  C  S                          S  S  S  S  C  C  C
Tstms                   C  C  C  S                          S  S  S  S  C  C  C


Date          Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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          62    87      67    87      65    83      63    80
Temp          66 64 85 83   73 68 86 81   72 66 82 76   68 64 79 75
Dewpt         63 62 68 67   66 64 66 64   63 62 64 64   62 59 62 61
PWind dir        NE    SE       S     S       S     S       S     S
Wind char        LT    GN      GN    GN      GN    GN      LT    GN
Avg clouds    B1 SC SC FW   FW SC FW FW   FW SC SC SC   SC B1 B1 B1
PoP 12hr         30    10      10     5      10    10      10    20
Rain shwrs     C  S                                            S  S
Tstms          C  S                                            S  S

$$
IAZ048-182200-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
1052 AM CDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      69          60          83          68          85
Temp                   69 69 66 63 62 61 61 69 78 83 80 74 71 70 68 75 81 85 77
Dewpt                  59 64 63 62 62 61 61 64 67 68 68 68 67 67 67 68 68 68 67
RH                     70 84 90 97100100100 84 69 61 67 82 87 90 97 79 65 57 71
Wind dir                S SE SE SE SE  E SE SE SE SE SE SE  S  S  S SW SW SW NW
Wind spd                9  4  4  3  3  2  3  6  9 10 10 10 10 10  8 10  8  6  4
Clouds                 OV OV OV B2 B2 B2 B2 B1 B1 SC FW FW SC SC SC SC B1 SC SC
PoP 12hr                     80          20           5          20          20
QPF 12hr                   0.20        0.04           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              D  L  S                             S  S        S  S  S
Tstms                   C  L  S                             S  S        S  S  S


Date          Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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          63    87      67    88      66    83      63    80
Temp          66 65 85 83   74 68 87 82   73 67 82 78   69 64 78 76
Dewpt         63 63 70 69   67 65 68 66   64 63 66 65   62 61 63 62
PWind dir        NE    SE       S     S       S     S      SE     S
Wind char        LT    GN      GN    GN      GN    GN      LT    GN
Avg clouds    SC SC SC FW   FW FW FW FW   SC SC SC SC   B1 B1 B1 B1
PoP 12hr         30    10       5     5      10    10      20    30
Rain shwrs     S  C                                         S  S  C
Tstms          S  S                                            S  C

$$
IAZ004-182200-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
1052 AM CDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      63          58          78          62          77
Temp                   60 63 62 60 58 58 58 64 72 78 76 72 70 67 62 66 73 77 70
Dewpt                  57 60 60 59 58 58 58 62 64 66 66 65 65 64 60 58 56 55 56
RH                     90 90 93 96100100100 93 76 67 71 79 84 90 93 75 55 47 61
Wind dir               SE  S SE SE SE SE SE SE SE SE SE SE  S  S  W NW NW NW  N
Wind spd               10  9  6  5  5  5  5  9 12 16 12 14 16 10  8  6  6  5  3
Wind gust                                            23 29 28
Clouds                 OV OV B2 B2 B2 B2 B2 B2 B1 SC SC SC B1 SC B1 FW FW FW FW
PoP 12hr                     70          10          10          30          10
QPF 12hr                   0.33           0           0        0.05           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              L  S                                C  C
Tstms                   L  S                                C  C


Date          Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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          56    84      67    86      64    81      59    77
Temp          58 58 81 81   74 68 85 81   71 64 80 76   66 60 75 72
Dewpt         53 55 65 68   66 64 67 66   63 61 63 63   59 57 59 58
PWind dir         E    SE       S     S       S     S      SE     S
Wind char        LT    GN      GN    BZ      GN    GN      GN    GN
Avg clouds    FW FW SC SC   SC SC SC SC   SC B1 B1 B1   B1 B1 B2 B2
PoP 12hr         10    10      10    10      20    30      30    40
Rain shwrs                                 S  S  C  C    C  C  C  C
Tstms                                      S     C  C          S  C

$$
IAZ035-182200-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
1052 AM CDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      66          60          81          68          81
Temp                   64 66 65 62 61 60 61 67 76 81 77 74 72 70 68 71 78 81 74
Dewpt                  59 62 61 60 60 60 60 63 65 67 66 66 66 66 65 65 63 61 61
RH                     84 87 87 93 97100 97 87 69 63 69 76 81 87 90 81 60 51 64
Wind dir               SE SE SE SE SE SE SE SE SE SE SE SE  S  S  S  W  W NW  N
Wind spd                9  8  5  4  3  3  4  8 11 13 12 13 14 11  9  5  6  6  4
Wind gust                                               27 27 24
Clouds                 OV OV OV B2 B2 B2 B2 B1 SC SC SC SC SC SC B1 FW SC FW FW
PoP 12hr                     90          10          10          20          10
QPF 12hr                   0.33           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              D  C                                S  S
Tstms                   L  C                                S  S


Date          Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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          61    87      69    88      66    82      62    78
Temp          63 63 84 84   76 70 87 82   72 67 81 78   68 63 77 74
Dewpt         59 60 68 68   66 64 68 66   64 61 65 63   61 58 61 60
PWind dir        NE    SE       S     S       S     S      SE    SE
Wind char        LT    GN      GN    BZ      GN    GN      LT    GN
Avg clouds    FW SC SC SC   SC SC SC SC   SC SC B1 B1   B1 B1 B1 B1
PoP 12hr         20    10      10     5      20    20      30    30
Rain shwrs        S                           S  S  S       C  C  C
Tstms             S                              S  S          S  C

$$
IAZ094-182200-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
1052 AM CDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      74          63          86          69          86
Temp                   72 73 70 66 65 64 64 71 80 86 81 74 73 71 69 76 84 86 80
Dewpt                  63 66 66 65 65 64 64 66 67 68 68 68 68 68 67 69 69 70 70
RH                     73 79 87 97100100100 84 65 55 65 82 84 90 93 79 61 59 72
Wind dir                S  S  S SE  S SE SE SE  S  S  S  S  S  S  S  S  S  S  S
Wind spd                9  6  4  3  3  4  5  6 10 12 10 10 10 10  9 11 10  9  4
Wind gust                                         23       23
Clouds                 OV OV OV B2 B2 B2 B2 B1 SC FW FW FW SC SC SC SC B1 B1 B1
PoP 12hr                     50          30          10          10          30
QPF 12hr                   0.15        0.17           0           0        0.02
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              C  C  C  S                                      C  C  C
Tstms                   C  C  C  S                                      S  S  C
Heat index                                                                92
Max heat                                       83    89                89    92


Date          Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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          67    87      68    87      67    84      63    82
Temp          70 67 86 82   74 69 86 81   73 68 83 78   68 64 81 77
Dewpt         67 67 70 69   67 66 68 66   65 63 65 65   64 61 64 63
PWind dir        SE     S       S     S       S     S       S     S
Wind char        LT    GN      GN    GN      GN    GN      LT    GN
Avg clouds    B1 SC SC FW   FW FW FW FW   FW SC SC SC   SC B1 B1 B1
PoP 12hr         40    10       5     5       5    10      20    30
Rain shwrs     C  S                                         S  C  C
Tstms          C                                               S  C

$$
IAZ017-182200-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
1052 AM CDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      64          56          79          66          80
Temp                   61 63 62 58 57 56 57 64 74 79 75 69 67 67 66 71 78 79 72
Dewpt                  56 58 58 57 57 56 57 62 64 65 66 65 65 65 65 66 64 61 61
RH                     84 84 87 96100100100 93 71 62 74 87 93 93 97 84 62 54 68
Wind dir               SE SE SE SE SE  E  E SE SE SE SE SE SE  S  S SW SW NW  N
Wind spd                9  9  5  4  4  4  4  9 11 12 11 13 14 13 10  9  6  6  5
Wind gust                                               24 25
Clouds                 OV OV OV B2 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 SC SC FW SC
PoP 12hr                     90          20          10          30          20
QPF 12hr                   0.21           0           0        0.02           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              D  L  S                             C  C        S  S
Tstms                   L  L  S                             C  C        S  S


Date          Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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          58    85      66    86      65    82      60    78
Temp          61 60 83 81   73 67 85 79   71 66 81 75   66 61 76 74
Dewpt         57 58 66 68   65 64 66 65   63 62 64 63   60 58 61 60
PWind dir        NE    SE       S     S       S     S      SE     S
Wind char        LT    GN      GN    BZ      GN    GN      LT    GN
Avg clouds    FW SC SC FW   FW SC FW FW   SC SC SC B1   B1 B1 B1 B1
PoP 12hr         10    20      10     5      10    10      20    30
Rain shwrs           S                                      S  S  C
Tstms                S                                         S  C

$$
IAZ049-182200-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
1052 AM CDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      70          59          82          67          85
Temp                   70 70 65 61 60 60 60 68 76 82 78 72 70 70 67 76 83 85 77
Dewpt                  56 60 61 60 60 59 59 63 65 66 67 66 66 66 65 68 68 68 67
RH                     61 71 87 97100 96 96 84 69 58 69 81 87 87 93 76 61 57 71
Wind dir               SE  S SE  E  E  E SE SE SE SE SE SE  S  S  S  S  S SW  W
Wind spd                9  5  4  3  3  3  3  5  8 10  9 10 10 10  9 10  9  9  4
Clouds                 OV OV OV B2 B2 B2 B2 B1 SC SC FW SC SC SC SC SC B1 SC B1
PoP 12hr                     60          30           5          20          30
QPF 12hr                   0.11        0.04           0           0        0.02
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              C  L  C                             S  S  S  S  C  C  C
Tstms                   C  L  C                             S  S  S  S  C  C  C


Date          Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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          63    87      66    87      65    82      62    80
Temp          66 64 85 82   73 67 86 81   72 66 81 75   66 63 79 75
Dewpt         63 63 68 68   66 64 66 64   63 61 64 64   62 60 62 62
PWind dir        NE    SE       S     S       S     S       S     S
Wind char        LT    GN      GN    GN      GN    GN      LT    GN
Avg clouds    SC SC SC FW   FW FW FW FW   FW SC SC SC   SC B1 B1 B1
PoP 12hr         30    10      10     5      10    10      10    20
Rain shwrs     C  C                                            S  S
Tstms          C  C                                            S  S

$$
IAZ086-182200-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
1052 AM CDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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          62          85          68          89
Temp                   74 75 69 65 63 63 63 71 80 85 81 75 72 71 68 77 86 89 81
Dewpt                  59 62 64 63 63 62 63 66 67 67 68 67 67 66 66 69 69 69 70
RH                     59 64 84 93100 97100 84 65 55 65 76 84 84 93 76 57 52 69
Wind dir               SE  S SE SE  S SE SE SE  S  S SE SE  S  S  S  S  S  S  S
Wind spd                9  6  4  3  3  3  3  5  8  9  8  9 10  9  9 10 10 11  5
Clouds                 B2 OV OV B2 B2 B2 B2 B1 SC FW FW FW SC FW SC SC SC SC B1
PoP 12hr                     50          50          10          10          20
QPF 12hr                   0.12        0.10           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              S  C  C  C  C                                   S  S  C
Tstms                   S  C  C  C  C                                   S  S  C
Heat index                                                             91 94 86
Max heat                                       82    88                92    95


Date          Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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          67    88      67    89      66    85      64    84
Temp          69 67 86 83   74 68 88 83   72 67 84 79   70 65 83 78
Dewpt         68 67 70 68   66 64 67 65   63 63 65 63   63 61 64 62
PWind dir         S    SE       S     S       S     S       S     S
Wind char        LT    GN      GN    GN      GN    GN      LT    GN
Avg clouds    B1 B1 SC FW   FW FW FW FW   FW SC SC SC   SC SC B1 SC
PoP 12hr         50    10       5     5       5    10      10    10
Rain shwrs     C  C
Tstms          C  S

$$



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