Point Forecast Matrices
Issued by NWS San Juan, PR

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FOCA52 TJSJ 130657
PFMSJU

POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN JUAN PR
257 AM AST Wed Dec 13 2017

PRZ001-132030-
LUIS MUNOZ MARIN INTERNATIONAL AIRPORT-SAN JUAN
18.43N  66.00W ELEV. 9 FT
257 AM AST Wed Dec 13 2017

DATE             WED 12/13/17            THU 12/14/17            FRI 12/15/17
AST 3HRLY     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      87          74          86          75          85
TEMP          74 79 86 87 81 78 76 75 74 79 85 86 81 78 77 76 75 79 84 85 81 79
DEWPT         70 71 70 71 72 71 71 70 70 70 72 72 72 71 71 71 71 72 70 70 70 70
RH            87 77 59 59 74 79 85 84 87 74 65 63 74 79 82 85 87 79 63 61 69 74
WIND DIR       S  S SE  E  E  E SE SE  E SE  E  E  E  E  E  E  E  E  E  E  E  E
WIND SPD       4  3  2  3  3  3  2  2  2  4  9 10  9  8  9 10  9  9 11 10 10 10
CLOUDS        FW FW FW FW FW SC SC SC SC SC SC SC SC SC SC SC SC SC SC FW FW SC
POP 12HR                     10          20          30          30          20
QPF 12HR                   0.04        0.04        0.07        0.10        0.07
RAIN SHWRS     S  S  S  S  S  S  S  S  S  S  S  S  S  C  C  C  C  S  S  S  S  S
HEAT INDEX          91 93 85                91 92 85                88 90 85
MAX HEAT               93    90                92    90                90    88


DATE          SAT 12/16/17  SUN 12/17/17  MON 12/18/17  TUE 12/19/17
AST 6HRLY     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6HRLY     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

MIN/MAX          76    85      76    84      76    84      75    84
TEMP          77 80 85 79   77 79 84 78   77 79 84 78   76 79 84 77
DEWPT         72 71 72 72   71 72 71 71   72 73 73 72   72 72 72 72
PWIND DIR         E    NE      NE     E       E     E       E     E
WIND CHAR        GN    GN      GN    BZ      BZ    BZ      GN    GN
AVG CLOUDS    SC SC SC SC   SC SC SC SC   B1 B1 B1 SC   B1 B1 B1 SC
POP 12HR         20    20      20    20      40    40      30    30
RAIN SHWRS     S  S  S  S    S  S  S  S    C  C  C  C    C  C  C  C

$$

PRZ002-132030-
ROOSEVELT ROADS NAVAL AIRSTATION-CEIBA PR
18.25N  65.63W ELEV. 39 FT
257 AM AST Wed Dec 13 2017

DATE             WED 12/13/17            THU 12/14/17            FRI 12/15/17
AST 3HRLY     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      86          72          86          75          85
TEMP          71 77 84 86 79 76 75 73 72 78 84 86 81 78 77 76 75 79 84 85 81 79
DEWPT         71 72 72 72 72 71 71 71 71 72 73 71 71 71 71 72 71 72 71 71 71 71
RH           100 85 67 63 79 85 87 93 97 82 70 61 72 79 82 87 87 79 65 63 72 77
WIND DIR      SW SW  S  S  S  S SE  E  E SE  E SE  E  E  E  E  E  E  E  E  E  E
WIND SPD       3  3  5  6  5  3  1  2  3  8 10 10  8  9 10 11 11 10 10 10 10 11
CLOUDS        SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC FW FW SC
POP 12HR                     20          40          40          30          20
QPF 12HR                   0.11        0.08        0.08        0.10        0.07
RAIN SHWRS     S  S  S  S  S  C  C  C  C  C  S  S  S  C  C  C  C  S  S  S  S  S
HEAT INDEX          90 92                   90 91 85                89 90 85
MAX HEAT               92    90                92    89                90    89


DATE          SAT 12/16/17  SUN 12/17/17  MON 12/18/17  TUE 12/19/17
AST 6HRLY     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6HRLY     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

MIN/MAX          76    86      77    85      77    86      76    84
TEMP          77 80 86 80   78 80 85 79   78 81 86 79   77 79 84 78
DEWPT         71 72 73 73   71 72 70 72   72 73 74 73   72 73 73 72
PWIND DIR         E    NE      NE    NE      NE     E       E     E
WIND CHAR        GN    GN      BZ    BZ      BZ    BZ      GN    BZ
AVG CLOUDS    SC SC SC SC   SC SC SC SC   B1 B1 B1 SC   B1 B1 B1 SC
POP 12HR         20    20      20    20      40    40      30    30
RAIN SHWRS     S  S  S  S    S  S  S  S    C  C  C  C    C  C  C  C

$$

PRZ007-132030-
MERCEDITA AIRPORT-PONCE PR
18.02N  66.56W ELEV. 26 FT
257 AM AST Wed Dec 13 2017

DATE             WED 12/13/17            THU 12/14/17            FRI 12/15/17
AST 3HRLY     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      87          68          86          68          86
TEMP          71 77 85 87 77 73 71 69 68 75 84 85 77 73 71 69 68 75 84 85 77 74
DEWPT         67 70 70 71 71 70 69 68 67 68 70 71 71 69 68 68 68 70 69 66 68 67
RH            87 79 61 59 82 90 93 97 97 79 63 63 82 87 90 97100 84 61 53 74 79
WIND DIR      NE NE  S  S  S NE NE NE  N NE SE SE  E  E NE NE NE NE  E  E  E NE
WIND SPD       2  1  4  5  3  2  3  3  3  4  6  8  6  4  5  5  5  5  9  9  8  5
CLOUDS        FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW SC
POP 12HR                      5           5           5           5          10
QPF 12HR                      0           0           0           0        0.03
RAIN SHWRS                                                              S  S  S
HEAT INDEX          90 93                   88 90                   88 87
MAX HEAT               93    89                91    88                89    86


DATE          SAT 12/16/17  SUN 12/17/17  MON 12/18/17  TUE 12/19/17
AST 6HRLY     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6HRLY     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

MIN/MAX          69    86      69    85      69    86      68    85
TEMP          70 76 85 74   70 76 84 73   70 75 85 73   69 75 85 72
DEWPT         70 68 69 70   69 69 66 68   69 70 70 70   69 70 69 69
PWIND DIR        NE    NE      NE    NE      NE    NE      NE    NE
WIND CHAR        LT    LT      LT    GN      GN    GN      LT    GN
AVG CLOUDS    SC SC SC SC   SC SC SC SC   SC SC SC SC   SC SC SC SC
POP 12HR         10    20      10    10      10    20      10    10
RAIN SHWRS     S  S  S  S    S  S  S  S    S  S  S  S    S  S  S  S

$$

PRZ008-132030-
RAFAEL HERNANDEZ AIRPORT-AGUADILLA PR
18.50N  67.13W ELEV. 237 FT
257 AM AST Wed Dec 13 2017

DATE             WED 12/13/17            THU 12/14/17            FRI 12/15/17
AST 3HRLY     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      82          73          83          73          83
TEMP          72 76 81 82 77 75 74 73 73 77 82 83 78 76 75 74 73 77 82 83 78 77
DEWPT         68 68 70 72 72 72 72 71 70 70 70 72 73 72 71 71 70 71 71 71 71 71
RH            87 76 69 72 85 90 93 93 90 79 67 70 85 87 87 90 90 82 69 67 79 82
WIND DIR      SE  S  S SW SW  E  E  E  E  E  E NE  E  E  E  E  E  E  E NE NE  E
WIND SPD       6  5  4  4  2  3  8  8  6  6  8  5  4  6 11 12 11 11 11 13 14 14
CLOUDS        FW FW FW SC SC FW FW FW FW FW SC SC SC SC SC SC SC SC SC FW FW SC
POP 12HR                     30           5          20          20          20
QPF 12HR                   0.14           0        0.05        0.07        0.07
RAIN SHWRS              C  C                 S  S  S  S  S  S  S  S  S  S  S  S
HEAT INDEX          85 87                   86 88                   86 88
MAX HEAT               87    84                88    85                88    86


DATE          SAT 12/16/17  SUN 12/17/17  MON 12/18/17  TUE 12/19/17
AST 6HRLY     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6HRLY     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

MIN/MAX          74    84      74    82      74    83      73    83
TEMP          75 78 84 77   75 77 82 76   74 77 83 76   74 77 83 75
DEWPT         70 70 73 72   71 72 71 71   71 72 73 72   72 72 72 72
PWIND DIR         E    NE      NE     E       E     E       E     E
WIND CHAR        GN    BZ      BZ    BZ      BZ    BZ      BZ    BZ
AVG CLOUDS    SC SC SC SC   SC SC SC SC   SC SC SC SC   SC SC SC SC
POP 12HR         20    20      20    20      10    20      10    20
RAIN SHWRS     S  S  S  S    S  S  S  S    S  S  S  S    S  S  S  S

$$

PRZ010-132030-
EUGENIO MARIA DE HOSTO AIRPORT-MAYAGUEZ PR
18.27N  67.15W ELEV. 28 FT
257 AM AST Wed Dec 13 2017

DATE             WED 12/13/17            THU 12/14/17            FRI 12/15/17
AST 3HRLY     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      83          69          84          70          84
TEMP          71 76 82 83 76 73 71 70 69 75 82 84 77 74 72 71 70 76 82 84 77 75
DEWPT         67 69 71 72 72 71 70 69 67 68 68 70 72 71 70 69 68 70 70 69 70 69
RH            87 79 69 70 87 93 97 97 93 79 63 63 85 90 93 93 93 82 67 61 79 82
WIND DIR       E SE  S  S  S  E  E  E  E  E  E SE SE  E  E  E  E  E  E NE NE  E
WIND SPD       6  6  6  8  5  3  5  5  5  5  4  2  2  3  5  6  6  5  5  5  6  8
CLOUDS        FW FW FW SC SC FW FW FW FW FW SC SC SC FW FW FW FW FW FW SC SC SC
POP 12HR                     20           5          30          10          10
QPF 12HR                   0.09           0        0.10        0.02        0.04
RAIN SHWRS              S  S                 C  C  C  S  S  S  S  S  S  S  S  S
HEAT INDEX          86 88                   85 88                   86 88
MAX HEAT               88    85                88    86                88    85


DATE          SAT 12/16/17  SUN 12/17/17  MON 12/18/17  TUE 12/19/17
AST 6HRLY     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6HRLY     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

MIN/MAX          71    85      71    83      71    84      70    84
TEMP          72 77 85 75   72 76 83 74   72 76 84 74   71 76 84 73
DEWPT         68 69 72 71   70 71 70 69   70 71 72 72   71 71 71 71
PWIND DIR         E    NE      NE    NE      NE    NE       E    NE
WIND CHAR        GN    GN      GN    BZ      BZ    GN      GN    GN
AVG CLOUDS    SC SC SC SC   SC SC SC SC   SC SC SC SC   SC SC SC SC
POP 12HR         10    20      10    20      10    20      10    20
RAIN SHWRS     S  S  S  S    S  S  S  S    S  S  S  S    S  S  S  S

$$

VIZ001-132030-
CYRIL E. KING AIRPORT-ST THOMAS USVI
18.33N  64.97W ELEV. 23 FT
257 AM AST Wed Dec 13 2017

DATE             WED 12/13/17            THU 12/14/17            FRI 12/15/17
AST 3HRLY     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      83          75          85          74          85
TEMP          76 79 82 83 79 77 76 76 75 79 84 85 80 77 76 75 74 78 84 85 81 79
DEWPT         71 72 72 72 71 71 71 72 72 73 72 71 72 72 72 72 72 72 71 71 72 73
RH            85 79 72 70 77 82 85 87 90 82 67 63 77 85 87 90 93 82 65 63 74 82
WIND DIR       S SW  S SW  S  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E
WIND SPD       5  5  6  5  4  2  5 10 12 12 12 11 11 12 14 16 14 13 14 13 14 18
CLOUDS        SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC FW FW SC
POP 12HR                     20          40          40          30          20
QPF 12HR                   0.11        0.08        0.08        0.10        0.07
RAIN SHWRS     S  S  S  S  S  C  C  C  C  C  S  S  S  C  C  C  C  S  S  S  S  S
HEAT INDEX          87 88                   90 90 84                89 90 85
MAX HEAT               88    87                91    88                90    89


DATE          SAT 12/16/17  SUN 12/17/17  MON 12/18/17  TUE 12/19/17
AST 6HRLY     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6HRLY     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

MIN/MAX          76    87      75    86      76    85      75    85
TEMP          77 80 87 78   76 79 86 79   77 80 85 78   76 79 85 77
DEWPT         73 73 73 73   72 72 72 73   74 73 73 73   73 73 72 73
PWIND DIR         E    NE      NE    NE      NE     E       E     E
WIND CHAR        BZ    BZ      BZ    BZ      WY    BZ      BZ    BZ
AVG CLOUDS    SC SC SC SC   SC SC SC SC   SC SC SC SC   B1 B1 B1 SC
POP 12HR         20    20      20    20      20    30      30    30
RAIN SHWRS     S  S  S  S    S  S  S  S    S  S  C  C    C  C  C  C

$$

VIZ002-132030-
HENRY E. ROHLSEN AIRPORT-ST CROIX USVI
17.70N  64.80W ELEV. 74 FT
257 AM AST Wed Dec 13 2017

DATE             WED 12/13/17            THU 12/14/17            FRI 12/15/17
AST 3HRLY     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
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                      85          72          85          73          85
TEMP          72 77 84 85 79 76 74 73 72 77 84 85 79 76 75 74 73 78 84 85 80 77
DEWPT         72 71 72 72 71 71 72 72 72 72 71 71 71 72 73 72 72 71 71 73 72 73
RH           100 82 67 65 77 85 93 97100 85 65 63 77 87 94 93 97 79 65 67 77 87
WIND DIR       S  S  S  S  S SE  E  E  E  E  E  E  E  E  E  E  E  E  E  E NE  E
WIND SPD       6  8  8  8  5  4  6 10 13 13 12 12 12 13 17 17 16 16 16 14 17 18
CLOUDS        SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC FW FW SC
POP 12HR                     20          40          40          20          20
QPF 12HR                   0.11        0.08        0.07        0.07        0.07
RAIN SHWRS     S  S  S  S  S  C  C  C  C  C  S  S  S  S  S  S  S  S  S  S  S  S
HEAT INDEX          90 91                   89 90                   89 92 84
MAX HEAT               91    88                90    88                92    88


DATE          SAT 12/16/17  SUN 12/17/17  MON 12/18/17  TUE 12/19/17
AST 6HRLY     02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6HRLY     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

MIN/MAX          74    86      74    86      75    86      74    85
TEMP          75 79 86 77   75 79 86 78   76 79 86 77   75 78 85 76
DEWPT         73 73 73 73   72 72 72 74   73 73 74 74   73 73 73 73
PWIND DIR         E    NE      NE    NE       E     E       E     E
WIND CHAR        BZ    BZ      BZ    WY      WY    BZ      BZ    BZ
AVG CLOUDS    SC SC SC SC   SC SC SC SC   SC SC SC SC   SC SC SC SC
POP 12HR         20    20      10    20      20    30      20    30
RAIN SHWRS     S  S  S  S    S  S  S  S    S  S  C  C    S  S  C  C

$$



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