Point Forecast Matrices
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Point Forecast Matrices
National Weather Service Baltimore MD/Washington DC
633 AM EST Thu Dec 14 2017

VAZ054-142100-
Reagan National Airport-Arlington VA
38.86N  77.03W Elev. 66 ft
633 AM EST Thu Dec 14 2017

Date             Thu 12/14/17            Fri 12/15/17            Sat 12/16/17
EST 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                      45          26          37          29          43
Temp             38 41 42 39 35 33 31 29 28 32 36 36 33 32 31 31 31 37 41 41 37
Dewpt            25 25 20 16 16 16 16 15 17 17 17 19 21 21 21 21 21 21 21 21 23
RH               59 52 41 39 45 49 53 55 63 53 45 50 61 63 66 66 66 52 44 44 56
Wind dir         SW NW NW NW  N  N  N NE  E SE  S SW  W  W  W  W  W  W  W  W  W
Wind spd         10 13 12 10 11  8  5  3  4  4  5  5  5  6  5  5  5  8 10  9  3
Wind gust           25    20
Clouds           B2 B1 FW B1 B2 B2 B2 B2 B1 OV OV B1 SC SC FW SC SC SC SC SC FW
PoP 12hr                     10           0          20          10           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Snowshwrs                                       S  S


Date          Sun 12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17
EST 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          30    48      39    54      40    55      37    47
Temp          34 33 46 44   42 41 52 47   44 42 53 46   42 39 46 40
Dewpt         23 25 29 33   37 36 40 41   40 37 40 37   34 29 25 25
PWind dir         W    SE      SW    SW       W     W       W    NW
Wind char        LT    LT      LT    LT      LT    LT      GN    GN
Avg clouds    FW FW SC B2   B2 B2 B1 B1   B1 SC B1 SC   SC SC FW FW
PoP 12hr          0    30      30    20      10    20      10     5
Rain shwrs                   C  C  S  S    S  S  S  S

$$
MDZ013-142100-
Baltimore/Washington Airport-Anne Arundel MD
39.19N  76.67W Elev. 154 ft
633 AM EST Thu Dec 14 2017

Date             Thu 12/14/17            Fri 12/15/17            Sat 12/16/17
EST 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                      44          22          35          27          42
Temp             34 37 41 36 32 29 27 26 24 29 34 34 31 30 29 29 29 35 40 40 35
Dewpt            23 25 19 15 14 13 13 13 14 14 15 18 19 19 19 19 19 19 19 18 21
RH               64 61 41 42 47 51 55 57 65 53 45 51 61 63 66 66 66 52 42 41 56
Wind dir          W NW NW NW NW NW  N  N SE SE  S  S  W  W  W  W  W  W  W  W  W
Wind spd         12 14 13 12  9  6  3  3  3  4  4  5  4  5  6  6  6 10 12 11  3
Clouds           B2 B1 FW SC B2 B2 B2 B2 B1 OV OV B2 B1 SC SC SC SC SC SC SC FW
PoP 12hr                     10           0          20          10           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Snowshwrs                                       S  S


Date          Sun 12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17
EST 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          27    46      36    53      38    54      35    45
Temp          31 30 44 41   39 39 51 46   42 41 52 45   41 37 44 38
Dewpt         21 23 27 32   35 34 39 39   38 36 38 36   32 27 24 24
PWind dir        NW    SE      SW    SW       W     W       W    NW
Wind char        LT    LT      LT    LT      LT    LT      GN    BZ
Avg clouds    FW FW SC B1   B2 B2 B1 B1   B1 B1 B1 SC   SC SC SC FW
PoP 12hr          0    30      30    20      10    20      10     5
Rain shwrs                   C  C  S  S    S  S  S  S

$$
MDZ011-142100-
Baltimore Inner Harbor-Baltimore City MD
39.28N  76.61W Elev. 20 ft
633 AM EST Thu Dec 14 2017

Date             Thu 12/14/17            Fri 12/15/17            Sat 12/16/17
EST 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                      44          24          35          28          41
Temp             36 39 41 37 33 30 28 27 26 30 34 34 32 31 30 29 30 35 40 39 35
Dewpt            23 24 18 15 14 13 13 13 14 14 15 17 20 20 19 19 19 19 19 19 21
RH               59 54 39 40 45 49 53 55 60 51 45 49 61 63 63 66 63 52 42 44 56
Wind dir          W NW NW NW NW NW  N  N SE SE  S  S SW  W  W  W  W  W  W  W  W
Wind spd         13 14 13 12  9  5  3  2  3  4  4  5  4  6  6  6  6 10 12 11  3
Wind gust           25
Clouds           B2 B1 FW SC B2 B2 B2 B2 B2 OV OV B2 B1 SC SC SC SC SC B1 SC SC
PoP 12hr                     10           0          20          10           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Flurries
Snowshwrs                                       S  S


Date          Sun 12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17
EST 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          29    45      37    52      39    53      36    45
Temp          32 32 43 41   39 39 50 46   43 41 51 45   41 37 44 39
Dewpt         21 23 27 31   35 35 39 39   38 36 38 36   32 27 25 24
PWind dir        NW    SE      SW    SW       W     W       W    NW
Wind char        LT    LT      LT    LT      LT    LT      GN    BZ
Avg clouds    SC SC SC B1   B2 B2 B1 B1   B1 B1 B1 SC   SC SC SC SC
PoP 12hr          0    30      30    20      10    20      10     5
Rain shwrs                   C  C  S  S    S  S  S  S

$$
WVZ052-142100-
Martinsburg Airport-Berkeley WV
39.41N  77.98W Elev. 558 ft
633 AM EST Thu Dec 14 2017

Date             Thu 12/14/17            Fri 12/15/17            Sat 12/16/17
EST 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                      39          21          35          24          41
Temp             32 39 37 33 29 27 25 24 23 29 33 33 30 28 27 26 27 34 39 38 33
Dewpt            21 21 16 12 14 14 13 13 13 15 15 18 18 19 18 18 17 19 19 17 20
RH               63 48 42 41 53 57 60 62 65 55 47 53 60 68 68 71 65 54 44 42 58
Wind dir          W NW NW NW NW NW  E  S  S  S  S SW  W  W  W  W  W  W  W NW  W
Wind spd          9 18 13 10  9  4  2  2  3  5  6  5  5  8  6  6  6  9 10  9  3
Wind gust                                                           19
Clouds           B2 B1 FW B1 B2 B2 B2 B2 B2 OV B2 B2 SC SC SC SC SC B1 SC SC FW
PoP 12hr                     10           0          10          10           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Flurries


Date          Sun 12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17
EST 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          24    45      33    52      35    52      32    44
Temp          29 27 43 39   36 36 50 44   40 38 50 42   38 34 43 36
Dewpt         19 21 26 30   32 31 40 38   35 33 37 33   28 24 23 22
PWind dir        SW     S       S     W       W     W       W    NW
Wind char        LT    LT      LT    LT      LT    LT      GN    GN
Avg clouds    FW SC B1 B2   B2 B2 B2 B1   B1 B1 B1 SC   SC SC SC SC
PoP 12hr          0    30      30    20      10    20      10     5
Rain shwrs              S    C  C  S  S    S  S  S  S

$$
VAZ506-142100-
Washington Dulles Airport-Loudoun VA
38.96N  77.45W Elev. 321 ft
633 AM EST Thu Dec 14 2017

Date             Thu 12/14/17            Fri 12/15/17            Sat 12/16/17
EST 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                      44          22          35          26          42
Temp             34 39 42 36 32 29 27 26 24 29 34 34 31 29 29 28 29 35 40 39 34
Dewpt            23 24 18 15 15 14 14 13 15 14 15 17 19 19 19 19 19 20 20 19 21
RH               64 54 37 42 49 53 57 57 68 53 45 49 61 66 66 68 66 54 44 44 58
Wind dir         SW NW NW NW  N  N  N  E SE  S  S SW  W  W  W  W  W  W  W NW  W
Wind spd          9 16 13 10  9  5  3  2  3  4  5  5  5  5  5  5  5  8 10  9  3
Clouds           B2 B1 SC B1 B2 B2 B2 B2 B2 OV OV B1 SC SC SC SC SC B1 SC SC FW
PoP 12hr                     10           0          10          10           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00


Date          Sun 12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17
EST 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          26    46      35    54      37    54      34    46
Temp          31 29 44 41   38 38 52 46   42 40 52 44   40 36 45 38
Dewpt         21 23 27 31   35 34 40 39   38 36 38 35   31 26 24 24
PWind dir         W     S      SW    SW      SW     W       W    NW
Wind char        LT    LT      LT    LT      LT    LT      GN    GN
Avg clouds    FW FW SC B2   B2 B2 B1 B1   B1 SC B1 SC   SC SC FW FW
PoP 12hr          0    30      30    20      10    20      10     5
Rain shwrs              S    C  C  S  S    S  S  S  S

$$
VAZ037-142100-
Charlottesville Airport-Albemarle VA
38.14N  78.45W Elev. 640 ft
633 AM EST Thu Dec 14 2017

Date             Thu 12/14/17            Fri 12/15/17            Sat 12/16/17
EST 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                      46          22          36          25          46
Temp             35 41 43 41 35 30 28 26 24 30 34 34 31 29 28 27 28 37 44 43 36
Dewpt            24 22 20 18 18 17 17 16 16 16 17 18 19 19 20 19 18 21 21 21 22
RH               64 46 39 39 49 58 63 65 71 55 49 51 61 66 71 71 66 52 39 41 56
Wind dir          W NW NW  N  N NE NE NE  E  S  S SW  W  W  W  W SW  W  W  W SW
Wind spd          6 10  8  5  5  3  2  2  2  3  5  5  5  5  4  4  4  6  8  5  3
Clouds           SC SC SC B2 B2 B2 B1 B1 B1 OV B2 SC FW FW FW SC FW FW FW FW CL
PoP 12hr                     10           0          10           5           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00


Date          Sun 12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17
EST 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          26    48      35    57      37    57      33    48
Temp          32 30 46 42   39 39 55 47   43 40 55 45   40 35 46 39
Dewpt         22 23 27 32   34 33 42 42   38 35 38 36   31 25 23 24
PWind dir        SW    SW      SW    SW       W     W       W     W
Wind char        LT    LT      LT    LT      LT    LT      LT    GN
Avg clouds    FW FW B1 B2   B2 B1 B1 B1   B1 SC SC SC   SC FW FW FW
PoP 12hr          0    30      30    20      10    20      10     5
Rain shwrs              S    C  C  C  C    S  S  S  S

$$
MDZ003-142100-
Hagerstown Airport-Washington MD
39.71N  77.73W Elev. 705 ft
633 AM EST Thu Dec 14 2017

Date             Thu 12/14/17            Fri 12/15/17            Sat 12/16/17
EST 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                      36          21          33          26          38
Temp             30 34 32 31 28 27 25 24 23 28 32 32 30 29 28 27 28 33 37 36 32
Dewpt            21 20 15 12 13 13 13 13 13 13 14 17 18 18 18 17 17 17 18 17 20
RH               69 56 49 45 53 55 60 62 65 53 47 53 60 63 66 65 63 51 46 45 61
Wind dir          W NW NW NW NW NW  N SE  S  S  S SW  W  W  W  W  W  W  W NW  W
Wind spd          8 18 14 11  9  4  2  2  4  6  8  6  6  8  6  6  8 10 11 10  3
Wind gust                                                           20
Clouds           B2 B1 FW SC B2 B2 B2 B2 B2 OV B2 B2 B1 SC SC SC SC B1 B1 B1 SC
PoP 12hr                     10           0          10          10           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Snow


Date          Sun 12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17
EST 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          25    43      34    49      36    50      32    42
Temp          29 28 41 39   37 36 47 43   40 38 48 41   37 34 41 35
Dewpt         19 21 25 29   32 32 39 37   35 33 36 32   28 24 22 22
PWind dir         W     S       S    SW       W     W       W    NW
Wind char        LT    LT      LT    LT      LT    LT      GN    BZ
Avg clouds    SC SC SC B2   B2 B2 B2 B1   B1 B1 B1 SC   SC SC SC SC
PoP 12hr          0    30      30    20      10    20      10     5
Rain shwrs              S    C  C  S  S    S  S  S  S
Snowshwrs                    C  C

$$
MDZ017-142100-
Patuxent River NAS MD
38.29N  76.41W Elev. 39 ft
633 AM EST Thu Dec 14 2017

Date             Thu 12/14/17            Fri 12/15/17            Sat 12/16/17
EST 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                      48          25          37          29          43
Temp             38 42 43 41 36 33 31 29 27 32 36 36 33 32 31 31 31 37 41 41 37
Dewpt            26 27 23 20 19 18 18 18 17 18 20 24 25 25 24 24 22 23 23 22 24
RH               62 55 45 42 50 53 58 63 65 56 52 61 72 75 75 75 69 56 48 46 59
Wind dir          W  W NW NW  N  N  N NE NE  E  E  S  W  W  W  W  W  W  W  W  W
Wind spd         18 17 18 14 12 11  9  6  5  5  4  5  5  9 10 10 10 11 11 11  5
Clouds           SC SC FW B1 B2 B2 B2 B1 B1 B2 OV B2 SC FW FW SC SC SC SC SC FW
PoP 12hr                      5           0          20          10           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Snowshwrs                                       S  S


Date          Sun 12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17
EST 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          31    48      39    54      41    55      38    48
Temp          34 34 46 44   42 41 52 48   45 43 53 47   43 40 47 41
Dewpt         26 27 31 36   37 38 41 42   42 40 42 41   36 31 27 28
PWind dir         W     S      SW    SW      SW    SW       W    NW
Wind char        LT    LT      LT    LT      LT    LT      GN    BZ
Avg clouds    FW FW SC B1   B2 B2 B1 B1   B1 SC SC SC   SC SC FW FW
PoP 12hr          0    30      30    20      10    20      10     5
Rain shwrs                   C  C  C  C    S  S  S  S

$$
WVZ502-142100-
Petersburg WV
38.99N  79.15W Elev. 963 ft
633 AM EST Thu Dec 14 2017

Date             Thu 12/14/17            Fri 12/15/17            Sat 12/16/17
EST 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                      42          24          36          27          41
Temp             38 36 36 32 30 29 27 26 26 31 35 35 32 30 30 29 29 35 39 39 35
Dewpt            21 20 18 16 17 17 17 17 16 17 19 18 19 19 19 18 18 20 21 20 21
RH               50 52 47 51 58 60 65 68 65 56 52 49 58 63 63 63 63 54 48 46 56
Wind dir          W NW NW NW NW NW  E  S  S  S SW  W  W  W  W  W  W  W  W  W SW
Wind spd         19 16 10  8  4  3  2  2  3  4  5  9  8 11 10  9  8  9  9  8  2
Wind gust                                                     20    19
Clouds           B2 SC SC B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC SC SC SC SC FW
PoP 12hr                     10           5          10          10           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Snow
Wind              Y  Y


Date          Sun 12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17
EST 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          28    48      37    54      40    51      34    42
Temp          32 31 46 43   40 40 52 47   44 42 50 43   39 35 41 36
Dewpt         21 22 29 31   33 36 42 40   37 35 37 33   28 24 22 22
PWind dir        SW     S      SW    SW       W     W       W     W
Wind char        LT    LT      LT    LT      LT    LT      GN    GN
Avg clouds    FW FW B1 B2   B2 B2 B2 B1   B1 B1 B1 B1   B1 SC SC SC
PoP 12hr          0    40      40    30      30    30      30    10
Rain shwrs              S    C  C  C  C    C  C  C  C
Snowshwrs                                                C  C

$$
MDZ014-142100-
Annapolis MD
38.99N  76.49W Elev. 7 ft
633 AM EST Thu Dec 14 2017

Date             Thu 12/14/17            Fri 12/15/17            Sat 12/16/17
EST 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                      45          25          35          29          42
Temp             38 40 43 38 34 32 30 28 27 31 34 34 32 31 31 30 31 36 41 40 36
Dewpt            25 26 21 18 16 16 14 15 14 15 17 20 22 22 21 22 19 20 21 20 22
RH               59 57 41 44 47 51 51 58 57 51 49 56 66 69 66 72 61 52 44 44 56
Wind dir          W  W NW NW NW  N  N  N  E SE  S  S  W  W  W  W  W  W  W  W  W
Wind spd         17 17 16 13 10  8  5  4  3  4  4  5  4  8  8  8  8 10 12 12  5
Wind gust                                                     18
Clouds           B2 B1 FW SC B2 B2 B2 B2 B1 OV OV B2 B1 FW SC SC SC SC SC SC FW
PoP 12hr                     10           0          20          10           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Snowshwrs                                       S  S


Date          Sun 12/17/17  Mon 12/18/17  Tue 12/19/17  Wed 12/20/17
EST 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          29    46      38    53      40    54      37    46
Temp          33 32 44 42   40 40 51 47   44 42 52 46   42 38 45 40
Dewpt         23 24 29 34   37 36 40 41   40 38 40 38   34 29 26 26
PWind dir         W     S      SW    SW       W     W       W    NW
Wind char        LT    LT      LT    LT      LT    LT      GN    BZ
Avg clouds    FW FW SC B1   B2 B2 B1 B1   B1 SC B1 SC   SC SC FW FW
PoP 12hr          0    30      30    20      10    30      10     5
Rain shwrs                   C  C  S  S    S  S  C  C

$$



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