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Issued by NWS Des Moines, IA

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Point Forecast Matrices
National Weather Service Des Moines IA
651 PM CDT Thu Sep 21 2017

IAZ060-221000-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
651 PM CDT Thu Sep 21 2017

Date           09/21/17      Fri 09/22/17            Sat 09/23/17            Sun
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                      74          93          73          93          71
Temp             86 79 77 77 74 81 90 93 87 80 77 75 74 83 91 93 87 79 76 73 72
Dewpt            72 71 69 70 70 71 71 70 70 69 68 67 67 69 68 66 66 66 65 64 63
RH               63 77 76 79 87 72 54 47 57 69 74 76 79 63 47 41 50 64 69 73 73
Wind dir          S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd         11 10  9  8 10 14 19 20 13  8  8  6  6  9 11 12  8  6  6  5  5
Clouds           SC FW FW FW FW FW CL CL CL CL FW FW SC FW SC SC FW FW FW FW FW
PoP 12hr                      5           0           5           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Heat index       92                97 99 92
Max heat         97    90          98   100    89          95    97    87


Date           09/24  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17  Thu 09/28/17
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    85      62    73      54    70      51    72
Temp          89 84   72 69 84 78   68 62 72 70   61 55 69 67   57 52 70 69
Dewpt         65 64   63 63 65 64   63 60 60 57   55 52 52 49   50 48 51 50
PWind dir         S       S     S      SW    NW      NW    NW      NW    NW
Wind char        GN      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW SC   SC SC B1 B1   B2 B2 B2 B2   B1 B1 B1 B1   B1 SC SC SC
PoP 12hr          5      10    40      40    40      20     5       5     5
Rain shwrs                   S  C    C  C  C  C    S
Tstms                        S  C    C  C  C  S

$$
IAZ039-221000-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
651 PM CDT Thu Sep 21 2017

Date           09/21/17      Fri 09/22/17            Sat 09/23/17            Sun
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                      71          93          69          90          68
Temp             85 78 76 72 72 81 90 93 85 78 73 71 70 80 88 89 84 77 73 70 69
Dewpt            68 69 68 67 67 70 69 68 68 67 66 65 65 68 67 65 65 64 63 62 62
RH               57 74 76 84 84 69 50 44 57 69 79 81 84 67 50 45 53 64 71 76 78
Wind dir          S SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd         13  9  9  8 10 14 19 20 12  8  6  6  6  9 11 11  8  6  5  4  5
Clouds           SC FW FW FW FW FW CL CL CL CL FW FW SC FW SC SC SC FW FW FW FW
PoP 12hr                      5           0           5           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Heat index                         95
Max heat         92    85          96    98    86          91    93    84


Date           09/24  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17  Thu 09/28/17
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      65    85      62    73      52    69      48    71
Temp          87 81   70 67 84 77   68 62 73 68   60 52 67 64   56 49 69 66
Dewpt         64 63   62 61 62 63   61 60 60 57   54 49 51 49   49 47 50 50
PWind dir         S       S     S       S     W      NW    NW      NW    NW
Wind char        GN      LT    LT      LT    LT      LT    GN      LT    LT
Avg clouds    FW SC   SC SC SC SC   B1 B2 B2 B2   B2 B1 B1 B1   B1 SC SC SC
PoP 12hr          5      10    30      30    40      30     5       5     5
Rain shwrs                   C  C    C  C  C  C    C
Tstms                        C  C    C  C  C  C    S

$$
IAZ048-221000-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
651 PM CDT Thu Sep 21 2017

Date           09/21/17      Fri 09/22/17            Sat 09/23/17            Sun
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                      73          92          70          89          69
Temp             84 79 77 74 73 80 89 92 86 78 75 73 70 81 88 89 84 78 73 71 69
Dewpt            72 71 70 70 70 71 71 69 69 68 68 67 66 69 68 66 66 65 65 64 63
RH               67 77 79 87 90 74 56 47 57 71 79 81 87 67 52 47 55 64 76 79 81
Wind dir          S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd         13  9  9  8 10 16 20 21 13  8  6  6  6  9 11 11  8  6  5  5  5
Wind gust                                                     21
Clouds           SC FW FW FW FW FW CL CL CL FW FW FW SC FW SC SC SC FW SC FW FW
PoP 12hr                      5           0           5           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Heat index       89                95 97
Max heat         93    87          96    99    87          92    93    85


Date           09/24  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17  Thu 09/28/17
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      66    84      60    72      52    69      49    72
Temp          87 82   71 67 83 77   67 60 71 68   60 53 68 65   55 50 70 68
Dewpt         65 64   63 62 65 64   63 59 59 56   54 50 51 50   49 48 51 50
PWind dir         S       S     S      SW    NW      NW    NW      NW    NW
Wind char        GN      LT    LT      LT    LT      LT    GN      LT    LT
Avg clouds    FW SC   SC SC B1 B1   B2 B2 B2 B2   B2 B1 B1 B1   SC SC SC SC
PoP 12hr          5      10    40      40    40      20     5       5     5
Rain shwrs                   C  C    C  C  C  C    S
Tstms                        C  C    C  C  C  S

$$
IAZ004-221000-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
651 PM CDT Thu Sep 21 2017

Date           09/21/17      Fri 09/22/17            Sat 09/23/17            Sun
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                      71          91          70          86          68
Temp             80 76 75 73 71 78 87 91 84 78 75 72 70 77 84 86 80 74 72 70 68
Dewpt            72 71 71 70 69 71 71 71 69 67 67 67 66 69 69 67 67 65 65 65 64
RH               77 85 87 90 93 79 59 52 61 69 76 84 87 76 61 53 65 74 79 84 87
Wind dir          S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd         14 11 12 12 13 18 21 24 17 12 13 10  9 11 13 13  8  8  9  8  9
Wind gust                             35    26 26
Clouds           SC FW SC FW SC SC FW FW FW SC SC B1 SC SC B1 B1 B1 SC B1 B1 B1
PoP 12hr                      0           0          10          10          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Heat index                         92 98
Max heat         87                93    98    86          88    89


Date           09/24  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17  Thu 09/28/17
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      62    76      54    65      47    66      47    68
Temp          82 77   68 63 76 69   61 54 64 63   53 48 64 62   52 49 67 63
Dewpt         66 64   62 61 63 62   58 53 54 53   49 46 48 48   48 46 49 50
PWind dir         S      SE     S       W    NW      NW    NW      NW    NW
Wind char        GN      LT    LT      LT    GN      LT    GN      LT    GN
Avg clouds    SC B1   B2 B2 OV OV   OV OV B2 B2   B1 B1 SC SC   SC FW FW SC
PoP 12hr         10      50    60      60    20      10     5       5     5
Rain shwrs             C  C  C  L    L  C  S
Tstms                  C  C  C  L    L  C  S

$$
IAZ035-221000-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
651 PM CDT Thu Sep 21 2017

Date           09/21/17      Fri 09/22/17            Sat 09/23/17            Sun
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                      73          93          71          89          69
Temp             85 79 77 75 73 78 89 93 86 79 75 73 71 79 87 89 83 77 73 70 69
Dewpt            72 71 70 70 70 71 72 70 69 67 67 67 67 68 68 67 66 64 64 65 64
RH               65 77 79 84 90 79 57 47 57 67 76 81 87 69 53 48 57 64 73 84 84
Wind dir          S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd         13 11 11 10 11 17 20 23 16 12 10 10  9 11 13 13 10 10  9  9  9
Wind gust                          31       23
Clouds           SC FW SC FW SC FW FW CL FW FW FW SC SC FW SC SC SC FW SC FW SC
PoP 12hr                      5           0           5           5          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Heat index       90                95 99
Max heat         96    85          96   100    86          91    93    83


Date           09/24  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17  Thu 09/28/17
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      65    81      58    69      50    68      48    71
Temp          86 81   71 66 81 74   67 58 68 65   57 51 66 64   54 49 69 66
Dewpt         64 64   62 62 64 63   61 56 57 55   52 48 49 48   48 47 49 49
PWind dir         S       S     S      SW    NW       N    NW       W    NW
Wind char        GN      LT    GN      LT    LT      LT    GN      LT    GN
Avg clouds    SC SC   SC B1 B2 B2   B2 OV B2 B2   B2 B1 B1 SC   SC SC SC SC
PoP 12hr         10      30    50      50    30      30     5       5     5
Rain shwrs                C  C  C    C  C  C  S    C
Tstms                     C  C  C    C  C  C  S

$$
IAZ094-221000-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
651 PM CDT Thu Sep 21 2017

Date           09/21/17      Fri 09/22/17            Sat 09/23/17            Sun
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                      71          90          69          88          67
Temp             85 78 76 74 71 79 88 90 84 76 74 72 69 79 86 88 82 74 72 69 68
Dewpt            70 71 70 70 69 71 70 69 69 69 68 67 66 68 67 66 66 66 65 64 63
RH               61 79 82 87 93 77 55 50 61 79 82 84 90 69 53 48 58 76 79 84 84
Wind dir          S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd         11  9  9  8 11 16 19 20 12  6  8  6  6  9 10 10  6  5  5  5  5
Clouds           FW FW SC FW FW FW CL FW CL CL FW FW SC FW FW SC FW FW FW FW FW
PoP 12hr                      5           0           5           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Heat index                         94 96
Max heat         94    86          94    97    85          90    91    82


Date           09/24  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17  Thu 09/28/17
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          87      66    83      61    73      55    71      50    72
Temp          85 81   70 67 82 76   68 61 72 69   60 56 70 67   58 51 70 67
Dewpt         65 64   63 63 65 64   63 60 60 58   56 53 53 50   51 48 51 50
PWind dir         S       S     S      SW    NW      NW     N      NW    NW
Wind char        GN      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW SC   SC SC B1 B1   B1 B2 B2 B2   B2 B1 B1 B1   B1 SC SC SC
PoP 12hr         10      10    40      40    40      10    10      10     5
Rain shwrs                   S  C    C  C  C  C
Tstms                        S  C    C  C  C  C

$$
IAZ017-221000-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
651 PM CDT Thu Sep 21 2017

Date           09/21/17      Fri 09/22/17            Sat 09/23/17            Sun
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                      71          91          69          89          68
Temp             83 76 74 73 71 78 88 91 83 76 73 71 69 79 87 89 82 75 72 70 68
Dewpt            69 69 68 69 68 71 70 69 69 67 66 66 66 69 68 66 66 64 64 64 64
RH               63 79 82 87 90 79 55 49 63 74 79 84 90 72 53 47 58 69 76 81 87
Wind dir          S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd         14 11 11 10 11 16 20 21 16 11 11 10  9 11 13 13  9 10  8  8  8
Clouds           SC SC SC SC SC SC FW CL CL FW FW SC SC FW SC SC SC SC SC FW SC
PoP 12hr                     10           0           5           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs
Tstms
Heat index                         93 96
Max heat         92                94    97    84          91    92


Date           09/24  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17  Thu 09/28/17
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          87      64    81      58    69      48    66      47    69
Temp          85 80   70 65 80 75   67 58 68 65   56 49 65 62   53 48 67 64
Dewpt         64 63   62 62 63 62   61 57 57 55   52 47 49 48   48 46 49 49
PWind dir         S       S     S      SW    NW      NW    NW       W    NW
Wind char        GN      LT    GN      LT    GN      LT    GN      LT    GN
Avg clouds    SC SC   SC B1 B1 B1   B2 B2 B2 B2   B2 B1 B1 SC   SC SC SC SC
PoP 12hr         10      20    40      40    40      30     5       5     5
Rain shwrs                S  C  C    C  C  C  C    C
Tstms                     S  C  C    C  C  C  S

$$
IAZ049-221000-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
651 PM CDT Thu Sep 21 2017

Date           09/21/17      Fri 09/22/17            Sat 09/23/17            Sun
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                      71          92          69          90          66
Temp             84 77 74 72 72 81 89 92 85 76 73 71 70 81 88 90 84 75 71 68 67
Dewpt            70 69 68 67 68 70 69 69 69 67 66 66 65 68 67 66 66 65 64 63 62
RH               63 76 82 84 87 69 52 47 59 74 79 84 84 65 50 45 55 71 79 84 84
Wind dir          S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd         16  9  9  8 10 14 20 20 12  8  6  6  6  9 11 12  8  6  5  4  5
Wind gust                             31
Clouds           SC FW FW FW FW FW CL CL CL CL FW FW SC FW SC SC FW FW FW FW FW
PoP 12hr                      5           0           5           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Heat index                            97
Max heat         94    85          94    97    85          92    94    84


Date           09/24  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17  Thu 09/28/17
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      65    84      60    72      51    68      48    70
Temp          86 81   70 66 83 76   67 60 71 68   60 52 67 63   55 49 68 66
Dewpt         64 63   62 61 63 63   61 59 59 57   54 49 51 50   49 47 50 50
PWind dir         S       S     S      SW     W      NW    NW      NW    NW
Wind char        GN      LT    LT      LT    LT      LT    GN      LT    LT
Avg clouds    FW SC   SC SC B1 B1   B1 B2 B2 B2   B1 B1 B1 B1   B1 SC SC SC
PoP 12hr          5      10    30      30    40      20     5       5     5
Rain shwrs                   C  C    C  C  C  C    S
Tstms                        C  C    C  C  C  C    S

$$
IAZ086-221000-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
651 PM CDT Thu Sep 21 2017

Date           09/21/17      Fri 09/22/17            Sat 09/23/17            Sun
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                      72          91          69          90          66
Temp             84 78 76 73 72 81 89 91 84 76 73 71 69 81 88 90 83 76 72 69 67
Dewpt            72 70 69 67 67 71 70 70 69 67 67 66 65 68 67 66 66 64 64 62 62
RH               67 76 79 81 84 72 54 50 61 74 81 84 87 65 50 45 57 66 76 78 84
Wind dir         SE  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
Wind spd         11  9  9  8  9 12 17 18 10  6  5  5  5  8  9  9  6  5  5  4  4
Clouds           FW FW FW FW FW FW CL FW CL CL FW FW FW FW SC FW FW FW FW FW FW
PoP 12hr                      0           0           0           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Heat index       89                94 97
Max heat         96    84          94    98    85          93    94    83


Date           09/24  Mon 09/25/17  Tue 09/26/17  Wed 09/27/17  Thu 09/28/17
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      65    86      63    76      55    71      50    72
Temp          87 82   71 66 85 79   69 64 76 71   61 56 70 67   57 51 70 67
Dewpt         65 64   62 61 64 63   62 61 61 59   55 52 52 50   49 47 50 50
PWind dir         S       S     S      SW     W      NW    NW      NW    NW
Wind char        LT      LT    LT      LT    LT      LT    GN      LT    LT
Avg clouds    FW SC   SC SC SC SC   B1 B1 B2 B1   B1 B2 B1 B1   B1 SC SC SC
PoP 12hr          5       5    30      20    30      20    10      10     5
Rain shwrs                      C    S  S  C  C    S
Tstms                           C    S  S  C  S    S

$$



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