Point Forecast Matrices
Issued by NWS Des Moines, IA

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Point Forecast Matrices
National Weather Service Des Moines IA
1236 AM CST Sun Dec 17 2017

IAZ060-181000-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
1236 AM CST Sun Dec 17 2017

Date           12/16/17      Sun 12/17/17            Mon 12/18/17            Tue
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      29          41          28          52          34
Temp                      31 31 31 38 41 35 32 29 29 28 31 46 52 44 41 39 35 34
Dewpt                     26 26 27 31 31 29 27 27 26 26 27 31 32 31 31 31 29 28
RH                        81 81 85 76 67 78 81 92 88 92 85 55 46 60 67 73 78 78
Wind dir                  NE NE  N NW  N  N NW  W SW SW SW SW SW SW SW SW  W  W
Wind spd                   4  4  4  4  5  3  2  3  4  4  6 11 12 10 10  9  6  5
Wind gust                                                  21 25
Clouds                    B1 B2 OV B2 B2 B1 B2 B1 B1 SC SC FW CL FW FW SC SC SC
PoP 12hr                      0          10           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Obvis                                          PF
Wind chill                                              25          35 33 29
Min chill              28    24    24    31    24    20    22    38    33    27


Date           12/19/17  Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          50      27    47      34    45      21    28      17    27
Temp          46 39 29   27 43 41 37   34 45 34 25   21 26 24 20   17 26 23
Dewpt         27 22 20   19 21 22 26   29 34 30 22   17 16 15 15   12 15 13
PWind dir        NW       N    SE       S     E       N    NW      NW    NW
Wind char        LT      LT    LT      GN    LT      GN    GN      LT    GN
Avg clouds    FW FW FW   FW SC SC B1   B2 OV OV OV   B2 B1 B1 SC   SC SC B1
PoP 12hr          5       0     0       5    70      80    10       0     5
Rain                                       S  L
Snow                                       S  L  D    L

$$
IAZ039-181000-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
1236 AM CST Sun Dec 17 2017

Date           12/16/17      Sun 12/17/17            Mon 12/18/17            Tue
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      24          37          24          47          29
Temp                      29 28 29 34 37 31 28 27 25 24 28 41 47 39 37 35 32 30
Dewpt                     27 27 26 30 31 28 26 26 25 24 26 30 31 30 29 29 28 28
RH                        92 96 88 85 79 88 92 96100100 92 65 53 70 72 78 85 92
Wind dir                  NE NE NE NE  N  N NW  W SW SW  S SW SW SW SW SW  W  W
Wind spd                   5  5  5  4  6  2  2  2  3  4  6 11 12 10 10  9  8  8
Wind gust                                                     24
Clouds                    B2 B2 OV B2 B2 B2 B2 B2 B2 SC SC SC FW SC SC SC B1 SC
PoP 12hr                      0           5           5           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Obvis                     PF PF PF          PF PF  F  F
Wind chill                23 22 23                   18 21 34    33 30 27 25 22
Min chill              18    20    21    26    23    17    17    31    25    21


Date           12/19/17  Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          43      21    39      27    37      20    26      13    24
Temp          41 32 25   21 35 30 28   27 37 29 24   21 25 21 18   13 22 20
Dewpt         25 22 20   19 20 21 22   25 29 27 23   20 18 17 16   12 14 13
PWind dir        NW      NW     E      SE     E       N    NW      NW    NW
Wind char        GN      LT    LT      GN    GN      GN    GN      GN    GN
Avg clouds    FW FW FW   SC B1 B1 B1   B2 OV OV OV   OV B2 B1 B1   B1 B1 B1
PoP 12hr          5       0     0      10    60      80    30       5     5
Rain                                       C  L
Snow                                       C  L  D    L  C

$$
IAZ048-181000-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
1236 AM CST Sun Dec 17 2017

Date           12/16/17      Sun 12/17/17            Mon 12/18/17            Tue
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      26          39          25          49          31
Temp                      29 29 30 37 38 33 29 27 25 25 30 44 49 40 37 35 32 31
Dewpt                     26 26 26 30 30 28 26 25 25 25 26 31 32 30 30 29 28 27
RH                        88 88 85 75 73 82 88 92100100 85 60 52 67 75 78 85 85
Wind dir                  NE NE NE  N  N  N NW  W SW SW SW SW SW SW SW  W  W NW
Wind spd                   5  5  5  4  8  3  3  3  4  4  8 12 13 10 10 10  8  6
Wind gust                                                  24 25
Clouds                    B2 B2 OV B2 B2 B1 B1 B1 B1 SC SC FW CL FW FW SC SC SC
PoP 12hr                      0           5           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Obvis                                          PF  F  F
Wind chill                23 23 24                   19 22 38    33 30 28 25 24
Min chill              23    21    22    27    20    18    18    32    26    23


Date           12/19/17  Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          47      24    45      30    40      19    28      14    26
Temp          44 36 27   24 41 37 33   30 40 30 23   19 26 22 19   14 25 22
Dewpt         26 22 21   19 22 22 24   28 32 28 21   17 16 15 15   12 14 13
PWind dir        NW       N    SE      SE     E       N    NW      NW    NW
Wind char        GN      LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    FW FW FW   SC SC SC B1   B2 OV OV OV   B2 B1 B1 B1   SC B1 B1
PoP 12hr          5       0     0       5    70      80    10       0     5
Rain                                       C  L
Snow                                       C  L  D    L

$$
IAZ004-181000-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
1236 AM CST Sun Dec 17 2017

Date           12/16/17      Sun 12/17/17            Mon 12/18/17            Tue
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      23          34          23          45          27
Temp                      26 26 25 31 34 27 25 23 23 23 27 41 45 37 34 32 30 27
Dewpt                     25 24 23 25 25 24 22 23 22 23 26 29 29 27 26 26 26 26
RH                        96 92 92 78 69 88 88100 96100 96 62 53 67 72 78 85 96
Wind dir                   N NE  N  N  N  N SW SW SW SW SW SW SW SW  W  W  W NW
Wind spd                   9  6  6  6  6  3  2  4  6 10 12 16 14 12 12 10  9  9
Wind gust                                                  26
Clouds                    B2 B2 OV B2 B1 B1 B1 SC SC SC SC SC FW SC SC B1 B1 SC
PoP 12hr                      0           0           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Obvis                     PF PF PF              F PF PF
Wind chill                18 18 17 25 28       17 15 13 16 33 38 29 26 23 22 18
Min chill              17    17    16    23    16    12    12    29    22    17


Date           12/19/17  Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          40      21    41      24    30      10    20       9    19
Temp          37 29 24   21 37 35 31   26 28 21 14   10 17 15 14    9 18 14
Dewpt         21 19 18   17 19 21 24   24 22 17 13    9 10 11 11    9 11 10
PWind dir        NW       N    SE      SE     N       N    NW      NW    NW
Wind char        GN      LT    GN      GN    GN      BZ    GN      GN    GN
Avg clouds    FW FW SC   B1 B1 B1 B1   B2 OV OV OV   B2 B1 B1 B1   B1 B1 B1
PoP 12hr          0       0     0      10    80      80     5       5    10
Snow                                       L  D  D    C

$$
IAZ035-181000-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
1236 AM CST Sun Dec 17 2017

Date           12/16/17      Sun 12/17/17            Mon 12/18/17            Tue
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      24          36          25          48          30
Temp                      28 28 27 33 36 30 28 25 25 25 29 43 48 39 37 34 32 30
Dewpt                     25 24 24 27 27 26 24 24 24 24 26 30 30 28 27 27 26 26
RH                        88 85 88 78 69 85 85 96 96 96 88 60 49 64 67 75 78 85
Wind dir                  NE NE NE  N  N  N NW SW  S SW SW SW SW SW SW  W  W NW
Wind spd                   6  6  6  6  9  3  2  2  4  5 10 14 13 10 11  9  8  6
Wind gust                                                  25
Clouds                    B2 OV B2 B2 B1 B1 B1 B1 SC FW FW FW FW SC SC B1 SC SC
PoP 12hr                      0           0           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Obvis                                          PF  F PF
Wind chill                21 21 20 27 29          19 17 20 36    32 29 26 25 23
Min chill              18    19    18    24    22    16    15    31    25    22


Date           12/19/17  Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          45      22    43      28    36      16    24      12    23
Temp          42 33 25   23 39 36 33   29 36 26 19   17 22 18 16   12 22 19
Dewpt         25 21 19   18 20 22 25   28 30 22 17   14 14 13 12    9 13 11
PWind dir        NW       N    SE      SE    NE       N    NW      NW    NW
Wind char        GN      LT    GN      GN    GN      BZ    GN      GN    GN
Avg clouds    FW FW FW   SC B1 B1 B1   B2 OV OV OV   B2 B1 B1 B1   B1 B1 B1
PoP 12hr          5       0     0      10    80      80     5       0     5
Rain                                       C  D
Snow                                       C  D  D    C

$$
IAZ094-181000-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
1236 AM CST Sun Dec 17 2017

Date           12/16/17      Sun 12/17/17            Mon 12/18/17            Tue
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      34          45          30          52          33
Temp                      34 35 39 42 45 39 37 33 32 30 34 47 52 44 42 39 35 33
Dewpt                     26 27 33 34 33 32 32 29 29 29 30 33 33 32 32 31 31 29
RH                        72 72 79 73 62 76 82 85 88 96 85 58 48 62 67 73 85 85
Wind dir                   E SW  S  W NW NW NW  W  W SW SW SW SW SW SW SW  W  W
Wind spd                   3  4  4  5  4  4  4  4  4  5  8 13 14 10 11 11  9  6
Clouds                    B2 OV OV OV B2 B1 B2 B2 B1 SC SC FW FW FW FW FW FW SC
PoP 12hr                     10          40           5           0           0
QPF 12hr                      0        0.05           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                          C  C
Wind chill                                           24 27       38 36 32 28 27
Min chill              34    30    31    34    29    23    23    38    31    25


Date           12/19/17  Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          51      26    49      35    48      21    30      16    29
Temp          48 41 31   26 44 39 37   35 48 37 25   21 28 23 19   16 27 23
Dewpt         30 25 21   20 21 24 28   32 36 32 23   18 16 16 14   13 14 14
PWind dir        NW      NE    SE       S    SE       N    NW      NW    NW
Wind char        GN      LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    FW FW FW   FW SC SC SC   B1 B2 OV B2   B2 B1 B1 SC   SC SC B1
PoP 12hr          0       0     0       5    50      60    10       0     5
Rain                                       S  C  L
Snow                                       S     L    C

$$
IAZ017-181000-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
1236 AM CST Sun Dec 17 2017

Date           12/16/17      Sun 12/17/17            Mon 12/18/17            Tue
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      19          34          23          45          28
Temp                      26 26 26 32 33 28 26 25 23 23 28 40 45 36 35 32 31 28
Dewpt                     24 24 25 28 28 26 25 24 23 23 26 30 31 29 28 27 27 27
RH                        92 92 96 85 82 92 96 96100100 92 67 58 75 75 81 85 96
Wind dir                  NE NE NE  N  N  N  W  W SW SW SW SW SW SW SW  W  W NW
Wind spd                   6  5  5  5  6  4  2  3  5  6 10 14 14 11 12 10  9  9
Wind gust                                                  26 25
Clouds                    B2 OV OV B2 B2 B2 B2 B2 B1 SC SC FW FW SC SC B1 B1 SC
PoP 12hr                      0           0           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Obvis                     PF PF PF          PF PF  F  F
Wind chill                19 19 18 26 27          17 15 19 32 39 28 26 24 23 19
Min chill               8    13    17    23    21    15    15    28    23    19


Date           12/19/17  Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          40      20    38      25    33      16    23      11    21
Temp          38 29 23   21 34 30 29   25 33 25 20   17 22 18 16   12 20 15
Dewpt         24 20 19   17 20 21 22   23 27 22 18   15 15 14 12    9 13 12
PWind dir        NW      NW    SE      SE    NE       N    NW      NW    NW
Wind char        GN      LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    FW FW FW   SC B1 B1 B2   B2 OV OV OV   B2 B1 B1 B1   B1 B1 B1
PoP 12hr          5       0     0      10    80      80    20       0     5
Snow                                       C  D  D    L  S

$$
IAZ049-181000-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
1236 AM CST Sun Dec 17 2017

Date           12/16/17      Sun 12/17/17            Mon 12/18/17            Tue
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      24          38          24          47          30
Temp                      27 27 30 36 38 32 28 27 25 24 28 42 47 39 36 34 31 30
Dewpt                     25 25 26 30 31 28 26 25 25 24 26 30 31 30 30 29 28 27
RH                        92 92 85 79 76 85 92 92100100 92 62 53 70 79 82 88 88
Wind dir                  NE NE NE  N  N  N NW  W SW SW SW SW SW SW SW SW  W  W
Wind spd                   6  6  5  4  8  3  3  3  3  4  6 12 13 10 11  9  8  6
Wind gust                                                     25
Clouds                    B1 B2 OV B2 B2 B1 B2 B1 B1 SC SC FW FW FW FW SC SC SC
PoP 12hr                      0           5           5           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Obvis                                          PF  F  F
Wind chill                20 20 24    32             18 21 36    32 28 27 23 23
Min chill              23    20    21    28    22    17    17    32    26    22


Date           12/19/17  Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          45      22    42      28    39      20    27      14    24
Temp          42 34 26   22 39 32 30   28 39 30 24   20 26 22 19   14 23 21
Dewpt         26 21 20   18 21 21 23   26 31 28 22   19 18 16 15   12 14 12
PWind dir        NW       N    SE      SE     E       N    NW      NW    NW
Wind char        GN      LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    FW FW FW   SC SC SC B1   B2 OV OV OV   B2 B2 B1 B1   B1 B1 B1
PoP 12hr          5       0     0       5    60      80    20       5     5
Rain                                       S  L
Snow                                       S  L  D    L  S

$$
IAZ086-181000-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
1236 AM CST Sun Dec 17 2017

Date           12/16/17      Sun 12/17/17            Mon 12/18/17            Tue
CST 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      30          43          29          51          34
Temp                      30 31 36 41 42 38 35 32 31 29 33 46 51 43 41 39 36 34
Dewpt                     25 26 31 33 34 33 31 30 29 29 31 33 34 33 33 32 32 31
RH                        81 81 82 73 73 82 85 92 92100 92 60 52 67 73 76 85 89
Wind dir                   E  E  S SW NW  W NW  W  W SW SW SW SW SW SW SW  W  W
Wind spd                   5  5  4  6  5  3  4  3  3  4  6 11 13 10 12 11 10  8
Clouds                    B2 OV OV OV B2 B2 B2 B2 B2 B1 SC SC FW FW FW SC SC SC
PoP 12hr                      5          30           5           5           0
QPF 12hr                      0        0.01           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                             C  S
Obvis                                          PF PF PF
Wind chill                   25                         27       37 34 32 29 27
Min chill              28    23    26    34    27    23    22    37    30    27


Date           12/19/17  Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
CST 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          49      25    46      32    48      24    31      16    29
Temp          46 38 29   25 42 36 33   32 48 41 30   24 29 26 22   16 27 24
Dewpt         29 23 21   20 21 21 24   28 33 32 28   22 19 17 16   14 15 13
PWind dir        NW       N    SE      SE    SE       N    NW      NW    NW
Wind char        GN      LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    FW FW FW   FW SC SC SC   B1 B2 B2 B2   B2 B2 B1 B1   SC SC B1
PoP 12hr          0       0     0       5    30      50    10       5     5
Rain                                       S  C  C
Snow                                       S     C    C

$$



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