Point Forecast Matrices
Issued by NWS Des Moines, IA

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Point Forecast Matrices
National Weather Service Des Moines IA
136 AM CST Sun Feb 18 2018

IAZ060-191000-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
136 AM CST Sun Feb 18 2018

Date           02/17/18      Sun 02/18/18            Mon 02/19/18            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          54          39          44          24
Temp                      24 28 37 50 54 44 40 40 42 43 41 39 36 33 30 29 26 25
Dewpt                     21 23 26 30 33 34 34 35 36 38 36 35 32 29 25 23 23 21
RH                        88 81 64 46 45 68 79 82 79 82 82 85 85 85 81 78 88 84
Wind dir                  SE  S  S  S  S  S  S SE  E  E NE  N  N  N  N  N  N  N
Wind spd                   5  9 17 23 20 11  8  6  8  9  8 10  9 11 10  8  9 12
Wind gust                          34 31
Clouds                    SC SC FW FW FW SC SC B2 OV OV OV OV B2 B2 B2 OV OV OV
PoP 12hr                      0           5          70          80          60
QPF 12hr                      0           0        0.07        0.12        0.10
Snow 12hr                 00-00       00-00       00-00
Drizzle                                                     C  C  C
Frzg drzl                                                            C        C
Frzg rain                                                               L  L
Rain                                            L  L  D  D
Tstms                                                 S  S
Obvis                     PF
Wind chill                17 19 27       38             35 32 29 24 21 21 17 14
Min chill                    16    19    37    34    35    32    24    20    13


Date           02/20/18  Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
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          26      11    26      13    37      25    42      28    43
Temp          24 24 17   11 24 25 17   15 34 34 25   28 39 41 33   29 41 41
Dewpt         19 14  8    5  5  6  5    4 11 16 18   22 28 29 28   26 28 29
PWind dir         N       N     N      NE    SE      SE    SE       N     E
Wind char        GN      GN    GN      LT    LT      LT    LT      LT    LT
Avg clouds    OV B2 B1   SC SC SC FW   FW FW SC B1   B2 B2 B2 B2   B1 B1 B1
PoP 12hr         50       5     0       0     5      10    60      40    40
Frzg drzl      C
Rain                                                     L  S  C          C
Sleet          S
Snow                                                     L     C    S

$$
IAZ039-191000-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
136 AM CST Sun Feb 18 2018

Date           02/17/18      Sun 02/18/18            Mon 02/19/18            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                      17          45          34          39          24
Temp                      17 19 29 41 45 38 36 35 35 35 35 37 35 33 30 29 27 25
Dewpt                     15 18 24 30 32 32 32 31 30 32 32 35 31 32 28 25 24 23
RH                        92 96 81 65 60 79 85 85 82 89 89 92 85 96 92 85 88 92
Wind dir                   S SE  S  S  S  S  S  S  E  E NE NE NE  N  N  N  N  N
Wind spd                   4  8 18 20 20 12 10  6  6  9  9  9 11 10 10  8 10 10
Wind gust                          31 31
Clouds                    SC B2 B1 SC FW FW SC B1 B2 OV OV OV OV OV B2 OV OV OV
PoP 12hr                      0           5          40          80          60
QPF 12hr                      0           0        0.02        0.20        0.10
Snow 12hr                 00-00       00-00       00-00
Drizzle                                         C  C              C
Frzg drzl                                                            C
Frzg rain                                                               L  L  L
Rain                                                  D  D  C  C
Obvis                     PF PF
Wind chill                10  9 17 31 37 30 29 29 29 28 28 30 27 25 21 21 17 15
Min chill                     7     9    30    28    27    27    24    20    14


Date           02/20/18  Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
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          26      10    22       9    34      20    38      24    39
Temp          25 21 16   10 20 21 14   11 31 31 22   22 35 36 28   25 37 37
Dewpt         21 16 10    6  7  8  5    4 12 15 16   19 26 28 26   24 28 28
PWind dir         N      NW    NW       N    SE      SE    SE       N     E
Wind char        GN      GN    GN      LT    LT      LT    GN      LT    LT
Avg clouds    OV OV B2   B1 SC SC FW   FW FW SC SC   B2 B2 B2 B2   B1 B1 B1
PoP 12hr         60       5     0       0     0       5    50      30    30
Frzg rain      L
Rain                                                        C  C          C
Snow                                                     C  C  C    S

$$
IAZ048-191000-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
136 AM CST Sun Feb 18 2018

Date           02/17/18      Sun 02/18/18            Mon 02/19/18            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          51          35          38          21
Temp                      19 24 34 47 51 41 38 37 37 37 36 35 33 31 28 27 24 23
Dewpt                     17 22 26 30 33 34 33 33 32 34 31 32 29 27 23 22 21 19
RH                        92 92 72 51 50 76 82 85 82 89 82 89 85 85 81 81 88 84
Wind dir                  SE SE  S  S  S  S  S SE NE NE NE  N  N  N  N  N  N  N
Wind spd                   3 10 18 23 19 10  6  6  8 10 10 10 10 10 11 10 11 13
Wind gust                          36 29
Clouds                    SC SC SC FW FW FW SC B1 B2 OV OV OV B2 B2 B2 OV OV OV
PoP 12hr                      0           0          60          80          60
QPF 12hr                      0           0        0.07        0.10        0.09
Snow 12hr                 00-00       00-00       00-00
Drizzle                                                     C  C
Frzg drzl                                                         S  S        C
Frzg rain                                                               L  L
Rain                                            L  L  D  D
Obvis                     PF PF
Wind chill                   13 22 39    35       31 30 28 28 25 22 18 17 13 11
Min chill                    11    14    35    32    29    27    21    17     9


Date           02/20/18  Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
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          23      10    23       9    35      22    40      26    40
Temp          22 21 14   10 21 22 14   11 32 31 23   25 38 39 31   27 38 38
Dewpt         17 13  7    4  5  6  4    3 11 14 16   20 28 29 27   24 28 28
PWind dir         N      NW    NW      NE    SE      SE    SE       N     E
Wind char        GN      GN    GN      LT    LT      LT    LT      LT    GN
Avg clouds    OV B2 B1   SC SC SC FW   FW FW SC B1   B2 B2 B2 B2   B1 B1 B1
PoP 12hr         40       5     0       0     5       5    50      30    40
Frzg drzl      C
Rain                                                     C  S  C          C
Sleet          S
Snow                                                     C     C

$$
IAZ004-191000-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
136 AM CST Sun Feb 18 2018

Date           02/17/18      Sun 02/18/18            Mon 02/19/18            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                      13          44          18          21          10
Temp                      15 21 30 41 44 37 29 24 22 21 19 19 20 19 18 17 13 12
Dewpt                     14 20 25 30 33 31 27 20 17 17 14 15 14 15 13 12 11  9
RH                        96 96 81 65 65 79 92 84 81 84 80 84 77 84 80 80 91 87
Wind dir                   S  S  S  S SW SW  N  N  N  N  N  N  N  N  N  N  N  N
Wind spd                   8 21 27 26 17 10 13 17 19 19 21 20 19 18 16 14 17 17
Wind gust                       41 40
Clouds                    B1 B2 B1 SC SC SC B1 B1 B2 OV OV OV OV OV B2 OV OV OV
PoP 12hr                      5           5          40          70          60
QPF 12hr                      0           0        0.01        0.10        0.06
Snow 12hr                 00-00       00-00       00-00
Frzg drzl                                       C  C        S  C  S  S
Frzg rain                                             L  C              S  S
Snow                                                  C  L  C  S     S  L  L  S
Obvis                     PF PF
Wind chill                 4  5 15 30 36 30 18 10  7  5  2  3  4  4  3  2 -4 -5
Min chill                     3     7    29    10     4     2     3     1    -8


Date           02/20/18  Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
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          15       0    17       5    30      16    33      19    35
Temp          15 12  6    0 15 15  6    9 28 27 18   19 31 31 25   19 32 34
Dewpt          8  7  1   -4  3  4  0    2 12 15 14   16 23 24 21   18 23 24
PWind dir         N      NW     W      SW     S       S     E       W    NW
Wind char        BZ      GN    GN      LT    GN      GN    GN      GN    GN
Avg clouds    OV B2 SC   FW FW FW FW   FW FW FW SC   B1 B2 B2 B1   B1 SC B1
PoP 12hr         20       5     0       0     0       5    40      10    40
Rain                                                                      C
Snow           S                                         C  C             C

$$
IAZ035-191000-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
136 AM CST Sun Feb 18 2018

Date           02/17/18      Sun 02/18/18            Mon 02/19/18            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                      17          48          26          29          16
Temp                      17 23 32 45 48 40 36 32 29 28 27 28 26 25 23 22 19 17
Dewpt                     16 22 26 32 35 34 31 28 24 25 24 25 23 22 19 17 16 14
RH                        96 96 78 60 60 79 82 85 81 88 88 88 88 88 84 81 88 88
Wind dir                   S  S  S  S  S  S  S  N NE NE  N  N  N  N  N  N  N  N
Wind spd                   9 14 26 26 18 10  6 10 12 13 14 13 12 11 13 11 13 12
Wind gust                       40 40
Clouds                    SC B1 B1 FW FW FW SC B1 B2 OV OV OV OV OV B2 OV OV OV
PoP 12hr                      0           0          50          70          50
QPF 12hr                      0           0        0.04        0.08        0.07
Snow 12hr                 00-00       00-00       00-00
Drizzle                                         C
Frzg drzl                                       C  C        C  C              S
Frzg rain                                             L  L              C  C
Sleet                                                                      S
Snow                                                                          S
Obvis                     PF PF
Wind chill                 6 10 18 35    33 30 24 18 17 15 17 15 14 11 10  6  4
Min chill                     6    11    33    24    17    15    14     9     2


Date           02/20/18  Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
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          19       5    21       8    33      20    37      23    39
Temp          19 17 11    5 19 19 11   10 30 30 23   21 35 35 28   23 37 37
Dewpt         13 10  5    0  4  5  3    2 12 15 16   18 26 26 24   22 27 26
PWind dir         N      NW    NW       S     S       S    SE       N     S
Wind char        GN      GN    GN      LT    GN      GN    GN      LT    GN
Avg clouds    OV B2 B1   SC SC FW FW   FW FW FW B1   B2 B2 B2 B1   B1 B1 B1
PoP 12hr         20       5     0       0     5       5    50      20    40
Frzg drzl      S
Rain                                                        C  S          C
Snow           S                                         C  C  S

$$
IAZ094-191000-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
136 AM CST Sun Feb 18 2018

Date           02/17/18      Sun 02/18/18            Mon 02/19/18            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          58          43          56          26
Temp                      26 28 38 52 58 48 44 44 47 51 54 54 45 39 35 33 30 28
Dewpt                     21 23 26 30 33 34 36 39 42 45 47 46 42 35 30 27 26 24
RH                        81 81 62 43 39 58 73 82 83 80 77 74 89 85 82 78 85 85
Wind dir                  SE  S  S  S  S  S  S  S  S  S  S  W NW  N  N  N  N  N
Wind spd                   8 11 17 25 23 12 10  9 10 11 10 11  9 10 10  9  9 12
Wind gust                          37 34
Clouds                    FW FW FW FW FW SC B1 B2 OV OV OV OV B2 OV OV OV OV OV
PoP 12hr                      0           5          70          70          60
QPF 12hr                      0           0        0.10        0.19        0.15
Snow 12hr                 00-00       00-00       00-00
Frzg rain                                                               S  L  C
Rain                                            L  L  L  L  C  C  C  C  L
Tstms                                                 C  C  S  S
Wind chill                18 18 28                               32 27 26 22 18
Min chill                    16    19          38                31    25    17


Date           02/20/18  Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
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          29      13    28      15    40      26    43      29    45
Temp          27 26 19   13 25 27 20   16 36 37 28   29 41 42 34   30 43 42
Dewpt         21 16  9    6  6  7  8    7 13 18 21   24 30 31 30   27 30 31
PWind dir         N       N     N      NE    SE      SE    SE       N     E
Wind char        GN      GN    GN      LT    LT      LT    GN      LT    GN
Avg clouds    OV B2 B1   B1 SC SC FW   FW SC SC B1   B2 B2 B2 B2   B1 B1 B1
PoP 12hr         50      10     0       0     5      40    60      50    30
Frzg drzl         S
Frzg rain      C
Rain                                                     L  C  C          C
Snow                                                  C  L     C    C

$$
IAZ017-191000-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
136 AM CST Sun Feb 18 2018

Date           02/17/18      Sun 02/18/18            Mon 02/19/18            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                      12          44          25          28          17
Temp                      12 16 26 40 44 38 34 30 27 27 26 27 27 25 23 22 20 18
Dewpt                     12 16 25 30 32 32 30 27 24 24 24 25 23 23 20 18 17 15
RH                       100100 96 67 62 79 85 88 88 88 92 92 85 92 88 84 88 88
Wind dir                   S SE  S  S  S  S  S  N  N NE  N  N NE  N  N  N  N  N
Wind spd                   6 12 23 24 19 11  8  9 11 14 16 14 16 13 12 12 12 14
Wind gust                       34 36 29
Clouds                    B1 B2 B2 SC SC SC B1 B1 B2 OV OV OV OV OV B2 OV OV OV
PoP 12hr                      0           5          30          80          60
QPF 12hr                      0           0        0.01        0.14        0.07
Snow 12hr                 00-00       00-00       00-00
Frzg drzl                                       S  C        C  C  S  S        C
Frzg rain                                             D  D              L  L
Sleet                                           C                          S
Obvis                     PF PF
Wind chill                 1  2 12 29 36 31 27 22 17 15 13 15 15 13 11 10  8  4
Min chill                     0     4    31    22    15    13    12    10     4


Date           02/20/18  Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
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          18       5    19       6    31      18    36      21    37
Temp          18 17 11    5 18 17  9    8 29 28 21   19 34 34 27   22 35 35
Dewpt         14 11  6    1  5  5  2    2 11 13 16   17 26 26 23   21 25 26
PWind dir         N      NW    NW      SW     S       S    SE      NW    SW
Wind char        BZ      GN    GN      LT    GN      GN    GN      GN    GN
Avg clouds    OV B2 B1   SC SC FW FW   FW FW FW SC   B2 B2 B2 B2   B1 B1 B1
PoP 12hr         30       5     0       0     0       5    50      20    40
Frzg drzl      C
Rain                                                        C             C
Snow           C                                         C  C  S          C

$$
IAZ049-191000-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
136 AM CST Sun Feb 18 2018

Date           02/17/18      Sun 02/18/18            Mon 02/19/18            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                      17          48          36          41          22
Temp                      17 21 31 43 48 41 38 37 37 38 39 40 37 33 30 29 25 24
Dewpt                     17 20 25 30 32 33 32 33 33 34 33 36 32 31 26 25 23 22
RH                       100 96 78 60 54 73 79 85 85 85 79 85 82 92 85 85 92 92
Wind dir                  SE SE  S  S  S  S  S SE  E  E NE  N  N  N  N  N  N  N
Wind spd                   4 10 19 23 19 11 10  8  8 11 10 11 11 11 10 10 10 12
Wind gust                       31 36 29
Clouds                    B2 B1 SC FW FW FW SC B1 B2 OV OV OV B2 B2 B2 OV OV OV
PoP 12hr                      0           0          50          80          60
QPF 12hr                      0           0        0.06        0.17        0.09
Snow 12hr                 00-00       00-00       00-00
Drizzle                                                     C  C  C
Frzg drzl                                                         C  C
Frzg rain                                                               L  L  L
Rain                                            C  C  D  D
Obvis                     PF PF
Wind chill                10 10 19 34    34 31 31 31 30 32 33 29 24 21 21 15 12
Min chill                     8    11    34    30    29    29    23    20    10


Date           02/20/18  Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
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          25       9    23       9    34      21    38      24    40
Temp          24 20 15    9 21 21 14   11 31 31 22   23 36 36 28   25 38 37
Dewpt         19 15  9    5  6  8  5    4 12 15 17   20 27 29 27   25 29 29
PWind dir         N      NW    NW       N    SE      SE    SE       N     E
Wind char        GN      GN    GN      LT    LT      LT    GN      LT    GN
Avg clouds    OV B2 B2   B1 SC SC FW   FW FW SC B1   B2 B2 B2 B2   B1 B1 B1
PoP 12hr         60       5     0       0     0       5    50      40    30
Frzg rain      L
Rain                                                        C  C          C
Sleet          S
Snow                                                     C  C  C    S

$$
IAZ086-191000-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
136 AM CST Sun Feb 18 2018

Date           02/17/18      Sun 02/18/18            Mon 02/19/18            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                      21          54          40          60          32
Temp                      21 23 34 48 54 43 41 41 43 47 53 59 50 42 37 36 35 33
Dewpt                     21 22 27 29 32 32 33 36 39 43 45 47 43 41 34 32 31 30
RH                       100 96 75 47 43 65 73 82 86 86 74 64 77 96 89 85 85 89
Wind dir                  SE  S  S  S  S  S  S  S SE SE SE SW  W NW NW  N  N  N
Wind spd                   6  8 16 21 20 12 10 10 10 11 11 13 10 11  9  8  6 10
Wind gust                          33 31
Clouds                    FW SC FW FW FW SC SC B2 OV OV OV OV OV OV OV OV OV OV
PoP 12hr                      0           0          70          80          70
QPF 12hr                      0           0        0.10        0.38        0.30
Snow 12hr                 00-00       00-00       00-00
Frzg rain                                                                  S  S
Rain                                            L  L  D  D  L  L  L  L  L  L  L
Tstms                                                 C  C  C  S  S
Wind chill                12 14 24       36 35 35 37             36 31 30 29 25
Min chill                    10    16    36    33    35          36    29    24


Date           02/20/18  Wed 02/21/18  Thu 02/22/18  Fri 02/23/18  Sat 02/24/18
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          34      15    29      15    40      26    42      30    45
Temp          31 28 21   15 27 27 21   16 37 35 28   28 40 41 34   30 43 43
Dewpt         27 20 13    8  9  9  9    8 15 19 22   24 30 31 31   28 31 31
PWind dir        NW      NW     N      NE     E      SE    SE       N     E
Wind char        GN      GN    GN      LT    LT      LT    GN      LT    GN
Avg clouds    OV OV B2   B1 SC SC SC   FW FW SC B1   B2 OV B2 B2   B2 B1 B1
PoP 12hr         70      20     0       0     0      20    70      50    30
Frzg drzl         C
Frzg rain      L     S
Rain           L                                         L  C  C          C
Snow                 S                                S  L     C    C

$$



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