Point Forecast Matrices
Issued by NWS San Juan, PR

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Point Forecast Matrices
National Weather Service San Juan PR
503 PM AST Fri Apr 4 2025

PRZ001-050800-
Luis Munoz Marin International Airport-San Juan
18.43N  66.00W Elev. 9 ft
503 PM AST Fri Apr 4 2025

Date           04/04/25      Sat 04/05/25            Sun 04/06/25            Mon
AST 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      74          87          74          87          74
Temp             79 77 75 75 81 86 87 83 79 77 75 75 81 86 87 83 79 77 75 75 81
Dewpt            70 70 70 69 69 70 70 70 70 69 69 68 69 68 69 69 69 69 68 68 68
RH               74 79 84 82 67 59 57 65 74 76 82 79 67 55 55 63 72 76 79 79 65
Wind dir          E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E
Wind spd         16 13 12 11 12 16 16 14 12 11 10 10 10 14 14 14 11  9  8  6 10
Clouds           B2 B2 B2 B2 B2 SC SC SC SC B2 B1 SC SC SC SC SC FW FW FW FW SC
PoP 12hr                     60          60          60          20          20
QPF 12hr                   0.51        0.17        0.15        0.03        0.01
Rain shwrs        L  L  C  L  L  S  S  S  C  L  C  C  S  S  S  S              S
Heat index                   84 90 92 87             84 89 91 87             84
Max heat         87          84    92    91          84    91    91          84
Wind


Date           04/07  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25  Fri 04/11/25
AST 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          87      73    88      73    88      74    88      74    89
Temp          87 78   74 81 88 78   74 81 88 79   75 82 88 79   75 82 89 80
Dewpt         68 68   69 69 69 69   70 70 70 71   71 71 72 71   71 71 72 72
PWind dir         E       E     E       E     E       E     E       E     E
Wind char        GN      GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    SC FW   FW FW SC FW   FW FW SC SC   SC SC B1 SC   SC SC B1 B1
PoP 12hr         20      20    20      20    20      50    50      40    50
Rain shwrs     S  S       S  S  S       S  S  S    S  C  C  C    S  C  C  C

$$
PRZ002-050800-
Roosevelt Roads Naval Airstation-Ceiba PR
18.25N  65.63W Elev. 39 ft
503 PM AST Fri Apr 4 2025

Date           04/04/25      Sat 04/05/25            Sun 04/06/25            Mon
AST 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      75          85          74          84          74
Temp             78 77 76 76 81 84 85 82 78 76 75 75 80 83 84 81 78 76 75 75 80
Dewpt            70 70 70 69 70 71 70 70 70 69 69 69 69 70 70 69 70 69 69 69 69
RH               76 79 82 79 69 65 61 67 76 79 82 82 69 65 63 67 76 79 82 82 69
Wind dir          E  E  E  E  E  E NE NE NE NE  E  E  E  E  E  E  E  E  E  E  E
Wind spd         19 18 16 13 14 14 16 14 13 13 13 13 13 13 13 13 12 12 11 11 12
Clouds           B2 B2 B2 B2 B1 B1 SC SC SC B1 SC SC SC SC SC SC SC SC SC SC SC
PoP 12hr                     60          40          40          20          20
QPF 12hr                   0.40        0.16        0.05        0.04        0.02
Rain shwrs        L  L  C  L  C  C  S  S  C  C  S  S  S  S  S  S  S  S  S  S  S
Heat index                   84 89 90 86             82 87 88 84             83
Max heat         85          84    90    89          82    88    88          83
Wind


Date           04/07  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25  Fri 04/11/25
AST 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          85      73    85      74    85      75    85      75    85
Temp          85 77   74 80 85 78   75 80 85 79   76 81 85 79   76 81 85 79
Dewpt         69 69   69 70 70 70   70 71 71 71   71 72 72 71   71 72 72 72
PWind dir         E       E     E       E     E       E     E       E     E
Wind char        GN      GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    SC FW   FW SC B1 SC   FW FW SC SC   SC SC B1 SC   SC SC B1 B1
PoP 12hr         20      40    40      30    30      50    50      50    60
Rain shwrs     S          C  C  S       C  C  S    S  C  C  S    S  C  C  L

$$
PRZ007-050800-
Mercedita Airport-Ponce PR
18.02N  66.56W Elev. 26 ft
503 PM AST Fri Apr 4 2025

Date           04/04/25      Sat 04/05/25            Sun 04/06/25            Mon
AST 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      72          90          71          89          71
Temp             78 75 73 73 82 88 90 85 78 75 72 72 81 87 89 84 77 75 72 72 81
Dewpt            66 66 66 65 65 64 67 67 66 65 64 63 62 60 63 63 63 63 64 64 62
RH               67 74 79 76 56 45 47 55 67 71 76 73 53 40 42 49 62 66 76 76 53
Wind dir         NE NE NE NE  E  E  E  E NE NE NE NE NE  E  E  E  E NE NE NE  E
Wind spd          9  9  6  6  8 13 16 14  8  8  6  6  8 12 17 13  8  6  6  6  8
Wind gust                          27 25                   28
Clouds           FW SC FW SC CL CL SC SC FW CL CL FW FW FW SC SC FW FW FW FW FW
PoP 12hr                     20          10           0          10           0
QPF 12hr                   0.02        0.04           0        0.02           0
Rain shwrs           S     S        S  S                    S  S
Heat index                   84 89 93 87             82 87 90 85             82
Max heat         86          84    93    93          82    90    89          82
Wind


Date           04/07  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25  Fri 04/11/25
AST 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          88      71    88      72    88      72    88      72    89
Temp          88 77   72 81 88 78   73 81 88 78   73 81 88 78   73 82 89 79
Dewpt         62 63   63 64 67 68   64 63 65 67   65 65 67 70   68 67 70 70
PWind dir         E       E     E       E     E       E     E       E     E
Wind char        GN      LT    GN      LT    GN      LT    GN      LT    GN
Avg clouds    FW FW   FW FW SC B1   B1 SC FW FW   FW FW FW FW   SC SC SC B1
PoP 12hr         10       0    40      40     0       5    20      30    40
Rain shwrs     S  S          C  C    C  C                   S    S  C  C  C

$$
PRZ008-050800-
Rafael Hernandez Airport-Aguadilla PR
18.50N  67.13W Elev. 237 ft
503 PM AST Fri Apr 4 2025

Date           04/04/25      Sat 04/05/25            Sun 04/06/25            Mon
AST 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      71          83          71          83          71
Temp             75 73 72 72 78 82 83 80 75 73 72 72 78 82 83 80 75 73 72 72 78
Dewpt            69 71 71 70 68 69 70 70 69 70 69 69 67 68 68 69 68 69 69 68 66
RH               82 93 97 93 71 65 65 72 82 90 90 90 69 63 61 69 79 87 90 87 67
Wind dir          E  E  E  E  E  E NE  E  E  E  E  E  E  E NE  E  E  E  E  E  E
Wind spd         19 19 16 16 16 18 20 18 16 16 14 12 12 16 17 14 13 13 12 10 12
Clouds           SC B1 B1 B2 SC SC CL CL SC B1 B2 B2 CL CL FW FW FW FW FW FW FW
PoP 12hr                     60          30          60           5           5
QPF 12hr                   0.31        0.06        0.16        0.01           0
Rain shwrs        C  C  C  L  S  C        S  C  L  C
Heat index                      85 87 83                84 86 82
Max heat                           87    86                86    86
Wind


Date           04/07  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25  Fri 04/11/25
AST 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          83      70    83      71    84      71    83      71    83
Temp          83 75   71 77 83 75   72 78 84 76   72 78 83 75   72 78 83 76
Dewpt         68 68   68 67 70 70   70 67 70 71   71 68 71 71   72 68 71 71
PWind dir         E       E     E       E     E       E     E       E     E
Wind char        GN      GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    SC SC   SC FW FW SC   SC FW FW SC   FW FW SC B1   SC SC SC B1
PoP 12hr         40      10    40      10    40       5    50      30    50
Rain shwrs     C  C    S  S  C  C    S  S  C  C          C  C    C  C  C  C

$$
PRZ010-050800-
Eugenio Maria de Hosto Airport-Mayaguez PR
18.27N  67.15W Elev. 28 ft
503 PM AST Fri Apr 4 2025

Date           04/04/25      Sat 04/05/25            Sun 04/06/25            Mon
AST 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      70          89          69          89          69
Temp             77 74 71 71 81 87 89 83 76 73 70 70 80 87 89 83 76 73 70 70 80
Dewpt            70 70 69 68 70 71 73 72 71 69 68 67 69 71 72 72 70 69 67 66 68
RH               79 87 93 90 69 59 59 70 85 87 93 90 69 59 57 70 82 87 90 87 67
Wind dir         NE  E NE NE NE NE  E NE NE NE NE  E  E  E  E  E  E  E  E  E  E
Wind spd         14 12 10 10 11 11  8  9 12 11 10  9  8  5  6  5  8  8  9  6  6
Clouds           SC SC SC SC CL CL SC SC FW SC FW SC CL CL B1 B1 FW FW FW FW FW
PoP 12hr                     20          30          20          40           0
QPF 12hr                   0.04        0.37        0.02        0.20           0
Rain shwrs        S  S  S  S        C  C  S  S     S        C  C
Heat index                   84 93 97 89             83 92 96 89             82
Max heat         89          84    97    96          83    96    96          82
Wind


Date           04/07  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25  Fri 04/11/25
AST 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          88      69    88      69    89      70    88      70    89
Temp          88 76   70 80 88 76   70 80 89 77   71 80 88 76   71 81 89 77
Dewpt         72 71   67 70 74 72   70 70 74 73   71 71 75 73   71 71 75 74
PWind dir         E       E     E       E     E       E     E       E     E
Wind char        LT      LT    LT      GN    LT      LT    LT      LT    LT
Avg clouds    SC B1   FW FW SC B1   SC SC SC B1   FW FW SC B1   SC SC B1 B2
PoP 12hr         50       5    50      30    50       5    50      20    60
Rain shwrs     C  C          C  C    C  C  C  C          C  C    S  S  L  L

$$
VIZ001-050800-
CYRIL E. King Airport-St Thomas USVI
18.33N  64.97W Elev. 23 ft
503 PM AST Fri Apr 4 2025

Date           04/04/25      Sat 04/05/25            Sun 04/06/25            Mon
AST 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      77          85          77          86          77
Temp             80 79 78 77 81 84 85 83 80 79 77 78 82 85 86 83 80 79 78 78 82
Dewpt            70 70 69 69 70 70 70 70 70 69 69 69 69 69 69 69 69 69 69 69 68
RH               72 74 74 76 69 63 61 65 72 72 76 74 65 59 57 63 69 72 74 74 63
Wind dir          E  E  E  E  E  E  E  E  E NE  E  E  E  E  E  E  E  E  E  E  E
Wind spd         24 24 20 20 20 19 19 19 19 19 19 17 18 18 17 18 17 17 16 16 17
Clouds           B1 SC SC SC CL SC SC SC SC SC CL FW SC SC SC SC SC SC SC SC SC
PoP 12hr                     40          20          30          20          20
QPF 12hr                   0.11        0.09        0.03        0.03        0.02
Rain shwrs        C  C  C  S     S  S  S  S  C        S  S  S  S  S  S  S  S  S
Heat index       83          85 89 90 87 83          85 89 90 87 83          85
Max heat         88    83    85    90    89    82    85    90    90    82    85
Wind


Date           04/07  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25  Fri 04/11/25
AST 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          86      76    86      77    86      77    86      77    86
Temp          86 80   77 82 86 80   78 82 86 80   78 82 86 80   78 82 86 80
Dewpt         69 69   69 70 70 70   70 70 71 71   71 71 72 72   72 72 72 72
PWind dir         E       E     E       E     E       E     E       E     E
Wind char        BZ      BZ    BZ      BZ    BZ      BZ    BZ      BZ    BZ
Avg clouds    SC FW   SC SC FW SC   SC SC SC SC   B1 B1 SC SC   SC SC B2 B2
PoP 12hr         20      10    10      20    40      40    40      50    60
Rain shwrs     S  S    S  S  S  S    S  S  S  C    C  C  C  S    S  C  C  L

$$
VIZ002-050800-
Henry E. Rohlsen Airport-St Croix USVI
17.70N  64.80W Elev. 74 ft
503 PM AST Fri Apr 4 2025

Date           04/04/25      Sat 04/05/25            Sun 04/06/25            Mon
AST 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
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                      74          87          74          87          74
Temp             79 77 75 75 81 86 87 83 79 77 75 75 81 86 87 83 79 77 75 75 81
Dewpt            69 70 69 69 71 71 71 71 70 70 69 69 70 70 70 70 70 69 69 69 69
RH               72 79 82 82 72 61 59 67 74 79 82 82 69 59 57 65 74 76 82 82 67
Wind dir          E  E  E  E  E  E  E  E NE NE NE  E  E  E  E  E  E  E  E  E  E
Wind spd         19 19 18 16 18 18 18 18 16 16 16 16 17 17 17 14 13 14 13 14 17
Clouds           FW SC SC SC CL SC B2 SC CL SC SC SC SC SC SC SC SC SC SC SC CL
PoP 12hr                     30          50          20          20           5
QPF 12hr                   0.06        0.12        0.04        0.03        0.01
Rain shwrs           C  S  S     S  C  S     S  S  S  S  S  S  S  S  S  S  S
Heat index                   85 91 93 88             85 90 92 87             85
Max heat         87          85    93    92          85    92    91          85
Wind


Date           04/07  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25  Fri 04/11/25
AST 6hrly     14 20   02 08 14 20   02 08 14 20   02 08 14 20   02 08 14 20
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          87      74    87      74    87      75    88      75    88
Temp          87 79   75 81 87 79   75 81 87 79   76 82 88 80   76 82 88 79
Dewpt         69 70   70 70 70 71   71 71 71 72   72 72 72 72   72 73 73 72
PWind dir         E       E     E       E     E       E     E       E     E
Wind char        BZ      BZ    BZ      BZ    BZ      BZ    BZ      BZ    BZ
Avg clouds    CL FW   B1 B1 B2 B1   FW FW FW FW   FW FW SC B1   B1 B1 B2 B2
PoP 12hr         40      60    60       5     5       5    40      50    60
Rain shwrs        C    C  L  L  C                     S  C  C    C  C  C  L

$$