Point Forecast Matrices
Issued by NWS Des Moines, IA

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Point Forecast Matrices
National Weather Service Des Moines IA
1122 AM CST Mon Feb 19 2018

IAZ060-192200-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
1122 AM CST Mon Feb 19 2018

Date             Mon 02/19/18            Tue 02/20/18            Wed 02/21/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      46          29          31          13          28
Temp                   39 36 33 30 30 30 30 29 30 29 25 23 19 16 13 16 25 28 25
Dewpt                  36 33 29 28 27 28 27 24 23 22 18 15 11  9  6  8  9 13 11
RH                     89 89 85 92 88 92 88 81 75 75 74 71 70 73 73 70 50 53 55
Wind dir               NW NW NW  N  N  N  N NW NW NW NW NW NW  N  N  N  N  N NE
Wind spd                9 10  9  8  6  5 10 11 12 14 13 13 12 12 11  9  9  8  8
Wind gust                                               24
Clouds                 OV OV OV OV OV OV OV OV OV B2 B1 B1 B1 SC SC SC SC SC SC
PoP 12hr                     50         100          50           0           5
QPF 12hr                   0.01        0.13        0.02           0           0
Snow 12hr                 00-00       00-00       00-00
Drizzle                 C  S
Frzg drzl                     S  S
Frzg rain                           L  D  C  C
Rain                          S
Obvis                  PF PF
Wind chill             32 30 25 22 23 24 21 19 20 18 13 10  6  2 -1  4 15 19 16
Min chill              32    24    22    21    19    13     5    -2    -1    16
Winter Weath                     Y  Y  Y  Y  Y


Date               Thu 02/22/18  Fri 02/23/18  Sat 02/24/18  Sun 02/25/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            18    35      27    40      26    42      28    45
Temp          20   19 33 34 30   28 38 37 28   28 40 41 32   29 42 43
Dewpt         12   13 17 21 23   23 27 27 24   23 29 31 28   25 30 27
PWind dir          NE     E      NE    NE      NE    NE       N    NW
Wind char          LT    LT      LT    LT      LT    LT      LT    GN
Avg clouds    SC   B1 B1 B1 B2   B2 B1 B1 B1   B2 B2 B2 B1   B1 SC SC
PoP 12hr           30    20      50    20      20    40      50    20
Rain                      S          S  S  S          C  C       S
Snow                C  S  S  C    C  S     S             C    S  S

$$
IAZ039-192200-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
1122 AM CST Mon Feb 19 2018

Date             Mon 02/19/18            Tue 02/20/18            Wed 02/21/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      38          29          31          10          24
Temp                   37 37 34 31 30 30 30 30 30 28 24 21 16 14 10 13 20 24 20
Dewpt                  36 36 33 31 30 30 30 27 26 23 19 16 11 10  6  8  9 12 11
RH                     96 96 96100100100100 88 85 81 81 81 80 84 83 80 62 60 67
Wind dir               NE  N  N  N  N NE  N NW NW NW NW NW NW  N  N  N  N  N  N
Wind spd                8  6  6  8  8  5  8  9 12 14 13 14 13 12 11  9  9  9  6
Clouds                 OV OV OV OV OV OV OV OV OV B2 B2 B1 B1 SC SC SC SC SC SC
PoP 12hr                     90         100          60           5           5
QPF 12hr                   0.04        0.12        0.07           0           0
Snow 12hr                 00-00       00-00       00-00
Drizzle                 C  S
Frzg drzl                        S
Frzg rain                           L  D  L  C  S
Rain                          S
Obvis                   F  F
Wind chill             31    27 24 22 24 22 23 21 16 12  8  2  0 -4  1  9 14 11
Min chill              29    27    22    20    19    11     2    -5    -4     9
Winter Weath                     Y  Y  Y  Y  Y


Date               Thu 02/22/18  Fri 02/23/18  Sat 02/24/18  Sun 02/25/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            13    31      23    37      22    39      24    40
Temp          15   14 29 30 26   24 36 34 24   24 37 38 30   25 39 36
Dewpt         10   12 16 21 23   22 27 27 23   23 28 30 27   24 28 26
PWind dir          NE     E       E    NE      NW     E       N     W
Wind char          LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    SC   SC B1 B1 B2   B2 B1 B1 B1   B2 B2 B2 B2   B1 SC SC
PoP 12hr           20    40      50    20      20    40      50    10
Frzg rain                 S
Rain                                    S             C  C
Snow                S     C  C    C  S  S  S             C    S

$$
IAZ048-192200-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
1122 AM CST Mon Feb 19 2018

Date             Mon 02/19/18            Tue 02/20/18            Wed 02/21/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      37          27          29          10          24
Temp                   35 33 31 29 28 29 28 28 27 26 23 20 16 14 10 12 21 24 21
Dewpt                  33 31 28 27 26 27 25 22 21 20 17 14 10  8  5  6  8 11 10
RH                     92 92 88 92 92 92 88 78 78 78 77 77 77 76 80 76 56 57 62
Wind dir                N NW NW  N  N  N  N NW NW NW NW NW NW  N  N  N  N  N  N
Wind spd               10 11  9 10  9  8 11 11 13 16 14 13 13 12 11  9  9  8  8
Wind gust                                                     23
Clouds                 OV OV OV OV OV OV OV OV OV B2 B2 B1 B1 SC SC SC SC SC SC
PoP 12hr                     50         100          40           0           5
QPF 12hr                   0.01        0.11        0.02           0           0
Snow 12hr                 00-00       00-00       00-00
Drizzle                 C  S
Frzg drzl                  S  S  S
Frzg rain                           L  D  C  C
Rain
Obvis                   F  F
Wind chill             27 24 22 20 19 21 18 18 16 13 10  7  2  0 -5  0 11 15 12
Min chill              26    21    18    17    14     8     0    -5    -5    11
Winter Weath                     Y  Y  Y  Y  Y


Date               Thu 02/22/18  Fri 02/23/18  Sat 02/24/18  Sun 02/25/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            15    32      23    37      24    40      25    41
Temp          17   16 29 31 26   25 36 35 26   25 38 39 31   26 39 38
Dewpt         10   12 16 21 22   22 26 27 22   22 28 30 27   24 28 27
PWind dir          NE     E       E    NE      NE    NE       N    NW
Wind char          LT    LT      LT    LT      LT    LT      LT    GN
Avg clouds    SC   SC B1 B1 B2   B2 B1 B1 B2   B2 B2 B2 B1   B1 SC SC
PoP 12hr           20    30      50    20      10    30      50    10
Frzg rain                 S
Rain                                    S             C  C
Snow                S     C  C    C  S  S                C

$$
IAZ004-192200-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
1122 AM CST Mon Feb 19 2018

Date             Mon 02/19/18            Tue 02/20/18            Wed 02/21/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      21          16          18           1          18
Temp                   20 21 20 20 18 18 17 16 17 17 13 11  6  3  1  4 13 18 13
Dewpt                  18 19 17 18 17 16 15 11 11 10  8  6  2  1 -1  0  4  7  4
RH                     92 92 88 92 96 92 92 80 77 73 80 80 83 91 91 83 67 61 67
Wind dir                N  N  N  N  N  N  N NW NW NW NW NW NW NW NW NW NW NW NE
Wind spd               19 19 16 13 12 12 13 14 16 17 14 12 12  9  9  5  5  4  4
Clouds                 OV OV OV OV OV OV OV B2 B2 B1 B1 SC SC FW FW FW FW FW FW
PoP 12hr                     70          90          30           0           0
QPF 12hr                   0.02        0.08           0           0           0
Snow 12hr                     T           1       00-00
Frzg drzl               C  S  C  C
Frzg rain                           C  C
Snow                    S  C  S     S  D  C
Wind chill              4  6  6  7  5  5  3  1  2  1 -3 -4-10-11-14 -7  4 11  5
Min chill               3     4     4     2     1    -3   -10   -14   -13     5
Winter Weath            Y  Y  Y  Y  Y  Y  Y  Y


Date               Thu 02/22/18  Fri 02/23/18  Sat 02/24/18  Sun 02/25/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max             4    25      16    31      17    34      19    34
Temp           7    6 22 23 19   17 29 29 18   20 31 33 23   20 33 31
Dewpt          2    3 11 17 16   17 21 22 17   18 23 26 22   19 24 21
PWind dir           E    SE      SE    NE       W    SW       W     W
Wind char          LT    LT      LT    LT      LT    GN      LT    GN
Avg clouds    FW   SC B1 B1 B1   B1 B1 B1 B1   B1 B2 B2 B1   SC SC SC
PoP 12hr            5    60      60    20       5    30      30     5
Snow                      L  L    S  S  S             C  C

$$
IAZ035-192200-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
1122 AM CST Mon Feb 19 2018

Date             Mon 02/19/18            Tue 02/20/18            Wed 02/21/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      29          21          23           6          21
Temp                   28 27 25 24 24 23 22 21 22 22 18 15 11  8  6  7 16 21 17
Dewpt                  26 25 22 24 22 22 20 17 16 15 13 11  7  5  2  3  6 10  8
RH                     92 92 88100 92 96 92 84 77 74 80 84 83 87 83 83 64 62 67
Wind dir                N  N  N  N  N  N  N NW NW NW NW NW NW  N NW  N  N  N NE
Wind spd               13 12 11  9  8  8 10 12 14 14 12 11 11 10  9  6  6  6  5
Clouds                 OV OV OV OV OV OV OV OV B2 B2 B2 SC SC SC SC FW FW FW FW
PoP 12hr                     60          90          30           0           0
QPF 12hr                   0.01        0.06           0           0           0
Snow 12hr                 00-00       00-00       00-00
Frzg drzl               C  S  C  S
Frzg rain                           C  D  C  S
Wind chill             16 16 15 14 15 14 11  9  9  9  5  2 -3 -6 -8 -4  7 12  9
Min chill              15    15    14    10     8     2    -5    -8    -7     9
Winter Weath            Y  Y  Y  Y  Y  Y  Y  Y


Date               Thu 02/22/18  Fri 02/23/18  Sat 02/24/18  Sun 02/25/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            10    29      20    34      22    38      23    38
Temp          12   12 26 27 23   22 33 31 23   24 36 36 26   24 36 36
Dewpt          7    8 14 20 20   20 25 25 20   20 26 28 24   21 26 24
PWind dir          NE     E      SE    NE      NE     E      NW     W
Wind char          LT    LT      LT    LT      LT    LT      LT    GN
Avg clouds    SC   SC B1 B1 B2   B2 B1 B1 B2   B2 B2 B2 B1   B1 SC SC
PoP 12hr           10    50      60    20      10    30      40     5
Rain                                                  C  C
Snow                      C  L    S  S  S             C  C    S

$$
IAZ094-192200-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
1122 AM CST Mon Feb 19 2018

Date             Mon 02/19/18            Tue 02/20/18            Wed 02/21/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      52          32          35          14          30
Temp                   46 42 38 33 33 34 35 32 32 31 26 23 19 16 14 17 25 30 26
Dewpt                  43 38 34 32 32 33 32 29 26 24 20 16 12 11  7  9  9 13 10
RH                     89 86 85 96 96 96 89 88 78 75 78 74 74 80 73 70 50 49 50
Wind dir                W NW NW  N NE NE  N  N NW NW NW  N  N  N  N  N  N  N NE
Wind spd               10 11  8  8  8  8  9 11 13 14 13 14 14 13 13 12 11 11  9
Clouds                 OV OV OV OV OV OV OV OV OV B2 B2 B1 B1 SC SC SC SC SC B1
PoP 12hr                     40         100          60           5           5
QPF 12hr                   0.03        0.26        0.09           0           0
Snow 12hr                 00-00       00-00       00-00
Drizzle                 C  S
Frzg rain                        D  D  D  S  C  S
Rain                          C        D  L  C
Snow                                                                          S
Tstms
Obvis                   F PF
Wind chill                36 32 26 26 27 28 23 22 20 15 10  5  2 -1  3 14 20 17
Min chill              39    29    25    25    21    14     4    -1    -1    17
Winter Weath                     Y  Y  Y  Y  Y


Date               Thu 02/22/18  Fri 02/23/18  Sat 02/24/18  Sun 02/25/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            19    36      27    42      28    45      28    47
Temp          21   20 32 36 32   28 40 39 31   30 42 44 35   29 43 45
Dewpt         13   15 19 24 25   25 29 30 27   26 31 33 30   26 31 29
PWind dir          NE     E      NE    NE      NE    NE      NW    NW
Wind char          GN    GN      LT    LT      LT    GN      GN    GN
Avg clouds    B1   B1 B1 B1 B2   B2 B2 B2 B1   B1 B2 B2 B2   B1 SC SC
PoP 12hr           30    30      50    20      30    40      60    20
Frzg rain              C  S
Rain                      S  C       S  S  C       S  C  L       S
Snow           S    C  C     C    C  S     C       S          C  S

$$
IAZ017-192200-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
1122 AM CST Mon Feb 19 2018

Date             Mon 02/19/18            Tue 02/20/18            Wed 02/21/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      30          21          23           6          21
Temp                   30 30 27 26 24 24 23 21 23 21 18 16 12  9  6  9 17 21 16
Dewpt                  29 28 24 25 24 23 22 18 18 16 14 11  7  5  3  4  6  9  8
RH                     96 92 88 96100 96 96 88 81 81 84 80 80 83 87 80 61 59 70
Wind dir                N  N  N  N  N  N  N NW NW NW NW NW NW NW NW NW NW  N  N
Wind spd               13 13 13 12 10  9 12 11 13 16 14 12 13 12 11  6  6  5  6
Wind gust                                               23
Clouds                 OV OV OV OV OV OV OV OV OV B2 B2 B1 B1 SC SC FW SC FW FW
PoP 12hr                     90          90          40           0           0
QPF 12hr                   0.05        0.08           0           0           0
Snow 12hr                 00-00       00-00       00-00
Frzg drzl               L  C  C  S
Frzg rain                           C  D  C  C
Wind chill             19 19 16 15 14 14 11  9 11  7  4  2 -4 -7-10 -2  8 13  7
Min chill              19    14    13    11     9     2    -6   -10    -9     6
Winter Weath            Y  Y  Y  Y  Y  Y  Y  Y


Date               Thu 02/22/18  Fri 02/23/18  Sat 02/24/18  Sun 02/25/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max             8    28      19    34      20    36      21    36
Temp          10   10 26 25 22   20 33 30 21   22 33 35 25   23 35 33
Dewpt          6    7 14 19 19   20 25 25 19   20 25 28 23   21 26 25
PWind dir          NE     E       E    NE      NW    NW      NW     W
Wind char          LT    LT      LT    LT      LT    LT      LT    GN
Avg clouds    FW   SC B1 B1 B2   B2 B1 B1 B1   B2 B2 B2 B2   B1 SC B1
PoP 12hr            5    50      60    20      20    30      50     5
Rain                                                  C  C
Snow                      C  L    C  S  S  S          C  C

$$
IAZ049-192200-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
1122 AM CST Mon Feb 19 2018

Date             Mon 02/19/18            Tue 02/20/18            Wed 02/21/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      39          29          30          10          24
Temp                   37 36 34 30 30 30 30 30 29 26 22 21 16 13 10 13 20 24 20
Dewpt                  36 35 31 30 29 29 29 25 24 22 19 15 10  9  6  8  9 13 11
RH                     96 96 89100 96 96 96 81 81 85 88 77 77 84 83 80 62 62 67
Wind dir                N NW NW  N  N  N  N NW NW NW NW NW NW  N  N  N  N  N  N
Wind spd                8  9  9  9  9  5 10 10 13 14 14 14 14 12 12 10  9  9  8
Wind gust                                                     23
Clouds                 OV OV OV OV OV OV OV OV OV B2 B2 B1 B1 SC SC SC SC SC SC
PoP 12hr                     70         100          50           5           5
QPF 12hr                   0.02        0.13        0.07           0           0
Snow 12hr                 00-00       00-00       00-00
Drizzle                 C  S
Frzg drzl                        S
Frzg rain                           D  D  C  C  S
Rain                          S
Obvis                   F  F
Wind chill             31 29 27 22 21 23 21 21 18 14  9  7  1 -1 -5  0 10 14 10
Min chill              29    25    20    20    17     9     1    -5    -5     9
Winter Weath                     Y  Y  Y  Y  Y


Date               Thu 02/22/18  Fri 02/23/18  Sat 02/24/18  Sun 02/25/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            14    32      22    37      23    39      24    40
Temp          15   15 30 29 25   23 35 35 26   25 37 38 29   25 38 37
Dewpt         11   12 16 21 23   23 27 28 23   22 28 30 27   24 28 27
PWind dir          NE     E       E    NE       N    NE       N    NW
Wind char          LT    LT      LT    LT      LT    LT      LT    GN
Avg clouds    SC   B1 B1 B1 B2   B2 B1 B1 B2   B2 B2 B2 B2   B1 SC SC
PoP 12hr           20    40      50    20      20    40      40    10
Frzg rain                 C
Rain                                    S  S          C  C
Snow                S  S  C  C    C  S  S  S             C    S

$$
IAZ086-192200-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
1122 AM CST Mon Feb 19 2018

Date             Mon 02/19/18            Tue 02/20/18            Wed 02/21/18
CST 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      54          35          40          16          30
Temp                   54 48 41 36 35 37 40 38 36 35 30 28 22 20 16 20 26 30 27
Dewpt                  50 43 37 35 35 35 36 34 31 29 24 20 15 13 10 12 12 15 12
RH                     86 83 85 96100 92 85 85 82 78 78 71 74 74 77 71 55 53 53
Wind dir               SW  W NW NW  N NE NE NW NW NW NW NW NW  N  N  N  N  N  N
Wind spd               12 11  9  8  8  5  8 10 12 14 14 16 16 13 13 12 12 11  9
Clouds                 OV OV OV OV OV OV OV OV OV OV OV B2 B2 B1 B1 SC B1 SC B1
PoP 12hr                     80         100          80          10          10
QPF 12hr                   0.10        0.31        0.23           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                    L  C  D  D  D  D  D  L  C  C
Snow                                                                          S
Tstms                   S  S  S  S
Obvis                     PF
Wind chill                   35 30 29       31 28 25 19 16  9  7  2  7 16 21 18
Min chill                    35    28    30    25    18     8     2     2    16


Date               Thu 02/22/18  Fri 02/23/18  Sat 02/24/18  Sun 02/25/18
CST 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            20    37      29    42      28    44      28    46
Temp          23   21 33 37 33   30 41 40 31   29 41 43 36   28 43 44
Dewpt         15   16 20 25 27   27 30 30 27   26 32 33 32   27 31 29
PWind dir          NE     E      NE    NE       N    NE       N    NW
Wind char          GN    GN      LT    LT      LT    LT      GN    GN
Avg clouds    B1   B1 B1 B1 B2   B2 B2 B2 B2   B2 B2 B2 B2   B1 SC SC
PoP 12hr           30    30      60    20      30    40      50    20
Rain                      S  C       S  S  C          C  C    C  S
Snow           S    C  C  S  C    L  S     C    S             C  S

$$



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