Point Forecast Matrices
Issued by NWS San Juan, PR

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

PRZ001-042000-
Luis Munoz Marin International Airport-San Juan
18.43N  66.00W Elev. 9 ft
503 AM AST Fri Apr 4 2025

Date             Fri 04/04/25            Sat 04/05/25            Sun 04/06/25
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          87          74          87
Temp             81 86 87 83 79 77 75 75 81 86 87 83 79 77 75 75 81 86 87 83 79
Dewpt            67 67 69 70 70 70 70 69 69 70 70 70 70 69 69 68 69 68 69 69 69
RH               63 53 55 65 74 79 84 82 67 59 57 65 74 76 82 79 67 55 55 63 72
Wind dir          E  E NE  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E
Wind spd         24 25 26 24 17 14 13 12 14 16 16 14 11 11 10 10 11 14 16 14 10
Clouds           SC SC SC B1 B2 B2 B2 B2 B2 SC SC SC SC SC SC SC SC SC SC SC FW
PoP 12hr                     60          60          60          30          20
QPF 12hr                   0.19        0.51        0.15        0.03        0.04
Rain shwrs        S  S  C  C  L  L  C  L  L  S  S  S  C  C  S  S  S  S  S  S
Heat index       84 88 91 87             84 90 92 87             84 89 91 87
Max heat         84    91    91          84    92    91          84    91    91
Wind              Y  Y  Y  Y


Date          Mon 04/07/25  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25
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    87      73    88      73    88      74    88
Temp          75 81 87 78   74 81 88 78   74 81 88 79   75 82 88 79
Dewpt         68 68 68 68   69 69 69 69   70 70 70 71   71 71 72 71
PWind dir         E     E       E     E       E     E       E     E
Wind char        GN    GN      GN    GN      LT    GN      LT    GN
Avg clouds    FW SC SC FW   FW FW SC FW   FW FW SC SC   SC SC B1 SC
PoP 12hr         20    20      20    20      20    20      50    50
Rain shwrs        S  S  S       S  S  S       S  S  S    S  C  C  C

$$
PRZ002-042000-
Roosevelt Roads Naval Airstation-Ceiba PR
18.25N  65.63W Elev. 39 ft
503 AM AST Fri Apr 4 2025

Date             Fri 04/04/25            Sat 04/05/25            Sun 04/06/25
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                      84          75          85          74          84
Temp             80 83 84 81 78 77 76 76 81 84 85 82 78 76 75 75 80 83 84 81 78
Dewpt            67 68 70 70 70 70 70 69 70 71 70 70 70 69 69 69 69 70 70 69 70
RH               65 61 63 69 76 79 82 79 69 65 61 67 76 79 82 82 69 65 63 67 76
Wind dir          E  E NE NE  E  E  E  E  E  E NE  E NE NE  E  E  E  E  E  E  E
Wind spd         24 25 24 24 18 17 16 13 16 16 16 14 12 13 11 12 13 13 14 11 11
Clouds           SC SC B1 B1 B2 B2 B2 B2 B1 B1 SC SC SC SC SC SC SC SC SC SC SC
PoP 12hr                     60          60          40          30          20
QPF 12hr                   0.16        0.40        0.16        0.05        0.05
Rain shwrs        S  S  C  C  L  L  C  L  C  C  S  S  C  C  S  S  S  S  S  S  S
Heat index       82 86 88 85             84 89 90 86             82 87 88 84
Max heat         82    88    88          84    90    89          82    88    88
Wind              Y  Y  Y  Y


Date          Mon 04/07/25  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25
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    85      73    85      74    85      75    85
Temp          75 80 85 77   74 80 85 78   75 80 85 79   76 81 85 79
Dewpt         69 69 69 69   69 70 70 70   70 71 71 71   71 72 72 71
PWind dir         E     E       E     E       E     E       E     E
Wind char        GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    SC SC SC FW   FW SC B1 SC   FW FW SC SC   SC SC B1 SC
PoP 12hr         20    20      40    40      30    30      50    50
Rain shwrs     S  S  S          C  C  S       C  C  S    S  C  C  S

$$
PRZ007-042000-
Mercedita Airport-Ponce PR
18.02N  66.56W Elev. 26 ft
503 AM AST Fri Apr 4 2025

Date             Fri 04/04/25            Sat 04/05/25            Sun 04/06/25
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                      89          72          90          71          89
Temp             81 87 89 84 78 75 73 73 82 88 90 85 78 75 72 72 81 87 89 84 77
Dewpt            64 60 60 64 66 66 66 65 65 64 67 67 66 65 64 63 62 60 63 63 63
RH               56 40 38 51 67 74 79 76 56 45 47 55 67 71 76 73 53 40 42 49 62
Wind dir         NE  E  E  E NE NE NE NE NE  E  E  E NE NE NE NE NE  E  E  E  E
Wind spd         19 24 24 21  9  8  6  6  9 16 20 16  9  8  6  8  9 16 20 17  8
Wind gust        32 40 40 35                26 34 26                26 34 28
Clouds           FW FW FW SC FW SC FW SC CL CL SC SC FW FW FW FW FW FW SC SC FW
PoP 12hr                     10          20          10           0          10
QPF 12hr                   0.01        0.02        0.04           0        0.02
Rain shwrs                 S     S     S        S  S                    S  S
Heat index       83 87 89 86             84 89 93 87             82 87 90 85
Max heat         83    89    89          84    93    93          82    90    89
Wind              Y  Y  Y  Y


Date          Mon 04/07/25  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25
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    88      71    88      72    88      72    88
Temp          72 81 88 77   72 81 88 78   73 81 88 78   73 81 88 78
Dewpt         64 62 62 63   63 64 67 68   64 63 65 67   65 65 67 70
PWind dir        NE     E       E     E       E     E       E     E
Wind char        LT    GN      LT    GN      LT    GN      LT    GN
Avg clouds    FW FW FW FW   FW FW SC B1   B1 SC FW FW   FW FW FW FW
PoP 12hr          0    10       0    40      40     0       5    20
Rain shwrs           S  S          C  C    C  C                   S

$$
PRZ008-042000-
Rafael Hernandez Airport-Aguadilla PR
18.50N  67.13W Elev. 237 ft
503 AM AST Fri Apr 4 2025

Date             Fri 04/04/25            Sat 04/05/25            Sun 04/06/25
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          71          83          71          83
Temp             78 81 82 79 75 73 72 72 78 82 83 80 75 73 72 72 78 82 83 80 75
Dewpt            66 66 68 69 69 71 71 70 68 69 70 70 69 70 69 69 67 68 68 69 68
RH               67 60 63 72 82 93 97 93 71 65 65 72 82 90 90 90 69 63 61 69 79
Wind dir          E  E NE  E  E  E  E  E  E  E NE NE  E  E  E  E  E  E NE  E  E
Wind spd         24 26 26 26 23 23 19 18 20 21 23 21 20 18 16 14 17 19 19 14 19
Clouds           SC SC FW SC SC B1 B1 B2 SC SC CL CL FW FW FW FW CL CL FW FW FW
PoP 12hr                     30          60          30           5           5
QPF 12hr                   0.06        0.31        0.04           0        0.01
Rain shwrs        S  S     S  C  C  C  L  S  C
Heat index          83 85                   85 87 83                84 86 82
Max heat               85    85                87    86                86    86
Wind              Y  Y  Y  Y


Date          Mon 04/07/25  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25
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    83      70    83      71    84      71    83
Temp          72 78 83 75   71 77 83 75   72 78 84 76   72 78 83 75
Dewpt         69 66 68 68   68 67 70 70   70 67 70 71   71 68 71 71
PWind dir         E     E       E     E       E     E       E    NE
Wind char        BZ    GN      GN    BZ      GN    GN      GN    GN
Avg clouds    FW FW SC SC   SC FW FW SC   SC FW FW SC   FW FW SC B1
PoP 12hr          5    40      10    40      10    40       5    50
Rain shwrs           C  C    S  S  C  C    S  S  C  C          C  C

$$
PRZ010-042000-
Eugenio Maria de Hosto Airport-Mayaguez PR
18.27N  67.15W Elev. 28 ft
503 AM AST Fri Apr 4 2025

Date             Fri 04/04/25            Sat 04/05/25            Sun 04/06/25
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                      89          70          89          69          89
Temp             81 87 89 84 77 74 71 71 81 87 89 83 76 73 70 70 80 87 89 83 76
Dewpt            69 69 70 71 70 70 69 68 70 71 73 72 71 69 68 67 69 71 72 72 70
RH               67 55 54 65 79 87 93 90 69 59 59 70 85 87 93 90 69 59 57 70 82
Wind dir          E NE NE NE NE NE NE NE  E  E  E NE  E  E  E  E  E  E  E  E  E
Wind spd         20 24 20 24 18 14 13 13 14 13  4  9 12 14 11  9  9  3  5  4 10
Clouds           FW SC SC SC SC SC SC SC CL CL SC SC FW FW FW FW CL CL B1 B1 FW
PoP 12hr                     30          20          30           5          40
QPF 12hr                   0.04        0.04        0.37           0        0.20
Rain shwrs           S  S  C  S  S  S  S        C  C  S  S              C  C
Heat index       84 91 94 89             84 93 97 89             83 92 96 89
Max heat         84    94    94          84    97    96          83    96    96
Wind              Y  Y  Y  Y


Date          Mon 04/07/25  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25
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    88      69    88      69    89      70    88
Temp          70 80 88 76   70 80 88 76   70 80 89 77   71 80 88 76
Dewpt         67 68 72 71   67 70 74 72   70 70 74 73   71 71 75 73
PWind dir         E     E       E     E       E     E       E     E
Wind char        GN    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW SC B1   FW FW SC B1   SC SC SC B1   FW FW SC B1
PoP 12hr          0    50       5    50      30    50       5    50
Rain shwrs           C  C          C  C    C  C  C  C          C  C

$$
VIZ001-042000-
CYRIL E. King Airport-St Thomas USVI
18.33N  64.97W Elev. 23 ft
503 AM AST Fri Apr 4 2025

Date             Fri 04/04/25            Sat 04/05/25            Sun 04/06/25
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          77          85          77          86
Temp             82 85 86 83 80 79 78 77 81 84 85 83 80 79 77 78 82 85 86 83 80
Dewpt            67 69 70 70 70 70 69 69 70 70 70 70 70 69 69 69 69 69 69 69 69
RH               61 59 59 65 72 74 74 76 69 63 61 65 72 72 76 74 65 59 57 63 69
Wind dir          E  E  E  E  E  E  E  E  E  E  E  E NE NE  E  E  E  E  E  E  E
Wind spd         26 25 23 25 24 25 21 21 20 19 20 18 18 20 18 19 19 18 16 16 18
Clouds           FW FW SC SC B1 SC SC SC CL SC SC SC SC SC SC SC SC SC SC SC SC
PoP 12hr                     40          40          20          20          20
QPF 12hr                   0.06        0.11        0.07        0.01        0.04
Rain shwrs              S  C  C  C  C  S     S  S  S  S  S  S  S  S  S  S  S  S
Heat index       84 89 91 88 83          85 89 90 87 83          85 89 90 87 83
Max heat         84    91    90    83    85    90    89    82    85    90    90
Wind              Y  Y  Y  Y


Date          Mon 04/07/25  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25
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          77    86      76    86      77    86      77    86
Temp          78 82 86 80   77 82 86 80   78 82 86 80   78 82 86 80
Dewpt         69 68 69 69   69 70 70 70   70 70 71 71   71 71 72 72
PWind dir         E     E       E     E       E     E       E     E
Wind char        BZ    BZ      BZ    GN      GN    BZ      BZ    GN
Avg clouds    SC SC SC FW   SC SC FW SC   SC SC SC SC   B1 B1 SC SC
PoP 12hr         20    20      10    10      20    40      40    40
Rain shwrs     S  S  S  S    S  S  S  S    S  S  S  C    C  C  C  S

$$
VIZ002-042000-
Henry E. Rohlsen Airport-St Croix USVI
17.70N  64.80W Elev. 74 ft
503 AM AST Fri Apr 4 2025

Date             Fri 04/04/25            Sat 04/05/25            Sun 04/06/25
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          87          74          87
Temp             81 85 87 83 79 77 75 75 81 86 87 83 79 77 75 75 81 86 87 83 79
Dewpt            68 68 69 69 69 70 69 69 71 71 71 71 70 70 69 69 70 70 70 70 70
RH               65 57 55 63 72 79 82 82 72 61 59 67 74 79 82 82 69 59 57 65 74
Wind dir          E  E  E  E  E  E  E  E  E  E  E  E NE NE NE  E  E  E  E  E  E
Wind spd         25 23 25 23 19 20 19 18 19 19 18 18 17 18 18 17 18 18 16 14 14
Clouds           SC FW FW SC FW SC SC SC CL SC B2 SC SC SC SC SC SC SC SC SC SC
PoP 12hr                     20          30          50          20          20
QPF 12hr                   0.03        0.06        0.12        0.04        0.04
Rain shwrs        S        S     C  S  S     S  C  S  S  S  S  S  S  S  S  S  S
Heat index       84 89 91 87             85 91 93 88             85 90 92 87
Max heat         84    91    91          85    93    92          85    92    91
Wind              Y  Y  Y  Y


Date          Mon 04/07/25  Tue 04/08/25  Wed 04/09/25  Thu 04/10/25
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    87      74    87      74    87      75    88
Temp          75 81 87 79   75 81 87 79   75 81 87 79   76 82 88 80
Dewpt         69 69 69 70   70 70 70 71   71 71 71 72   72 72 72 72
PWind dir         E     E       E     E       E     E       E     E
Wind char        BZ    BZ      BZ    BZ      GN    GN      GN    GN
Avg clouds    SC FW CL FW   B1 B1 B2 B1   FW FW FW FW   FW FW SC B1
PoP 12hr          5    40      60    60       5     5       5    40
Rain shwrs     S  S     C    C  L  L  C                     S  C  C

$$