Point Forecast Matrices
Issued by NWS San Juan, PR

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2
000
FOCA52 TJSJ 180903
PFMSJU

Point Forecast Matrices
National Weather Service San Juan PR
503 AM AST Thu Apr 18 2024

PRZ001-182000-
Luis Munoz Marin International Airport-San Juan
18.43N  66.00W Elev. 9 ft
503 AM AST Thu Apr 18 2024

Date             Thu 04/18/24            Fri 04/19/24            Sat 04/20/24
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          76          85          76          84
Temp             82 85 86 83 80 78 77 77 81 84 85 82 79 78 77 76 80 83 84 81 78
Dewpt            72 73 73 72 72 72 72 71 72 73 74 73 72 72 71 71 71 71 72 71 71
RH               72 67 65 70 77 82 85 82 74 70 70 74 79 82 82 85 74 67 67 72 79
Wind dir         NE NE NE NE NE NE NE NE NE NE NE  N  N  N NE NE NE NE NE NE NE
Wind spd          3  6  8  6  5  4  1  1  2  6  8  8  6  5  4  5  9 11 11 11  9
Clouds           B1 B1 SC SC SC SC B2 B2 B2 SC B1 B1 B2 B2 B1 B1 B1 B1 B1 B1 B1
PoP 12hr                     30          60          60          50          50
QPF 12hr                   0.21        0.17        0.22        0.14        0.21
Rain shwrs        S  C  C  S  S  S  S  C  L  S  C  C  C  C  C  C  C  C  C  C  C
Heat index       86 91 93 89 83          85 90 92 88 83          84 88 90 86
Max heat         86    93    92          85    92    92          84    90    89


Date          Sun 04/21/24  Mon 04/22/24  Tue 04/23/24  Wed 04/24/24
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          75    84      75    87      76    87      76    86
Temp          76 80 84 78   76 82 87 80   77 82 87 80   77 82 86 79
Dewpt         71 72 73 73   73 74 76 75   74 74 76 75   74 74 75 73
PWind dir        NE    NE       E     E       E     E       E     E
Wind char        GN    GN      GN    GN      LT    GN      GN    GN
Avg clouds    B1 B1 B2 B2   B2 B2 B2 B2   B2 B2 B2 B2   B2 B2 B2 B1
PoP 12hr         50    60      60    60      60    60      60    60
Rain shwrs     C  C  C  L    L  L  C  L    L  L  L  L    L  L  L  C
Tstms                              S  S                        S  S

$$
PRZ002-182000-
Roosevelt Roads Naval Airstation-Ceiba PR
18.25N  65.63W Elev. 39 ft
503 AM AST Thu Apr 18 2024

Date             Thu 04/18/24            Fri 04/19/24            Sat 04/20/24
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          75          86          75          86
Temp             82 86 87 84 79 77 76 76 81 85 86 83 79 77 76 76 81 85 86 83 80
Dewpt            73 73 74 74 73 73 73 72 73 74 74 73 73 73 73 71 73 73 73 73 72
RH               74 65 65 72 82 87 90 87 77 70 68 72 82 87 90 85 77 67 65 72 77
Wind dir         NE NE NE NE NE NE NE NE NE NE NE  N  N  N NE NE NE NE NE NE NE
Wind spd          5  8  8  8  6  6  4  4  4  6  8  9  8  8  6  8 10 11 11 11 10
Clouds           B1 B1 SC SC SC B1 B2 OV B2 SC SC SC B2 B2 B2 B2 B1 B1 SC SC B2
PoP 12hr                     30          60          60          50          50
QPF 12hr                   0.26        0.21        0.18        0.14        0.14
Rain shwrs        S  C  C  C  S  S  S  C  L  S  C  S  C  C  C  C  C  C  S  S  C
Heat index       87 93 95 90 83          86 92 94 89             86 91 93 89 83
Max heat         87    95    94          86    94    93          86    93    92


Date          Sun 04/21/24  Mon 04/22/24  Tue 04/23/24  Wed 04/24/24
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      77    87      77    88      77    88
Temp          77 82 87 81   78 83 87 81   78 83 88 81   78 83 88 81
Dewpt         73 73 74 74   74 75 76 76   75 75 76 76   75 74 75 73
PWind dir        NE    NE       E     E       E     E       E     E
Wind char        GN    GN      GN    GN      LT    GN      GN    GN
Avg clouds    B2 B2 B1 B2   B2 B2 B1 B1   B2 B2 B2 B2   B2 B2 B2 B2
PoP 12hr         50    60      60    60      60    60      60    60
Rain shwrs     C  C  C  L    L  L  C  L    L  L  L  L    L  L  L  C
Tstms                              S  S                        S  S

$$
PRZ007-182000-
Mercedita Airport-Ponce PR
18.02N  66.56W Elev. 26 ft
503 AM AST Thu Apr 18 2024

Date             Thu 04/18/24            Fri 04/19/24            Sat 04/20/24
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          73          88          73          85
Temp             81 85 87 83 78 76 74 74 81 86 88 84 78 76 74 74 80 84 85 81 76
Dewpt            68 67 69 70 70 69 68 67 67 68 69 69 70 69 68 67 68 67 70 69 69
RH               65 55 55 65 76 79 82 79 63 55 54 61 76 79 82 79 67 57 61 67 79
Wind dir          N SE SE NE NE NE  N  N NE SE  S  N  N  N  N NE NE NE  E NE NE
Wind spd          3  6  8  4  2  4  4  3  3  8  6  1  4  5  5  5  4 10 11  3  8
Clouds           SC SC B2 SC FW FW SC FW SC CL B1 SC FW FW FW FW FW FW B2 B2 SC
PoP 12hr                     50          20          40           5          50
QPF 12hr                   0.36        0.05        0.20        0.01        0.22
Rain shwrs        S  S  C  C        S     S     C  C                    C  C  C
Heat index       84 88 91 87             84 90 92 88             82 86 90 84
Max heat         84    91    91          84    92    92          82    90    89


Date          Sun 04/21/24  Mon 04/22/24  Tue 04/23/24  Wed 04/24/24
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    86      72    86      74    87      75    87
Temp          72 79 86 77   73 80 86 78   75 81 87 79   76 82 87 77
Dewpt         67 68 70 70   69 69 72 72   70 70 72 72   70 70 72 71
PWind dir        NE     E      NE     E       E     E       E     E
Wind char        LT    GN      LT    GN      LT    LT      LT    GN
Avg clouds    SC SC FW FW   CL CL FW SC   FW FW FW FW   CL FW SC SC
PoP 12hr         30    10       0    20       5     5       5    30
Rain shwrs     C  C  S  S          S  S                        C  C

$$
PRZ008-182000-
Rafael Hernandez Airport-Aguadilla PR
18.50N  67.13W Elev. 237 ft
503 AM AST Thu Apr 18 2024

Date             Thu 04/18/24            Fri 04/19/24            Sat 04/20/24
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          73          83          75          82
Temp             79 82 83 80 77 75 74 74 79 82 83 81 78 77 75 75 79 81 82 79 76
Dewpt            71 70 71 71 71 72 72 72 70 71 71 71 70 72 72 71 69 69 70 70 70
RH               77 67 67 74 82 90 93 93 74 69 67 72 76 85 90 87 72 67 67 74 82
Wind dir         NE NE NE NE NE  E  E NE NE NE NE NE NE NE NE NE NE NE NE NE  E
Wind spd          9 10 12 12 11 10  8  8  9 11 13 14 13 11 11 11 13 14 19 16 17
Clouds           SC SC FW CL SC SC SC SC SC CL SC SC SC SC SC SC FW FW B1 B1 FW
PoP 12hr                     10          20          20          30          30
QPF 12hr                   0.05        0.10        0.06        0.07        0.13
Rain shwrs        S  S        S  S  S  S  S     S  S  S  S  C  C  S  S  C  C
Heat index       82 86 88 84                86 88 85                85 86 82
Max heat         82    88    87                88    87                86    85


Date          Sun 04/21/24  Mon 04/22/24  Tue 04/23/24  Wed 04/24/24
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          73    83      72    83      74    83      75    83
Temp          74 79 83 76   73 78 83 77   75 79 83 78   75 79 83 77
Dewpt         72 70 71 72   73 71 73 74   74 72 74 74   74 72 73 73
PWind dir         E    NE       E     E       E    NE       E     E
Wind char        BZ    BZ      BZ    GN      GN    GN      GN    BZ
Avg clouds    FW FW SC SC   SC SC B1 B2   B2 B1 SC B1   SC SC B1 B1
PoP 12hr          5    30      30    60      50    60      30    40
Rain shwrs        S  C  C    C  C  L  L    C  C  L  L    S  C  C  C
Tstms                              S  S                        S  S

$$
PRZ010-182000-
Eugenio Maria de Hosto Airport-Mayaguez PR
18.27N  67.15W Elev. 28 ft
503 AM AST Thu Apr 18 2024

Date             Thu 04/18/24            Fri 04/19/24            Sat 04/20/24
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                      88          73          88          73          86
Temp             81 86 88 84 78 76 74 74 81 86 88 84 78 76 74 74 80 85 86 82 76
Dewpt            73 75 76 76 74 73 72 71 73 75 76 76 73 73 71 71 72 74 75 74 72
RH               77 70 68 77 88 90 93 90 77 70 68 77 85 90 90 90 77 70 70 77 87
Wind dir         NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE
Wind spd          6  5  9 12 10  8  6  8  8  8 10 14 13 10 10 10 11  9 13  9 12
Clouds           CL FW B1 SC SC FW FW FW SC FW SC B1 CL CL FW FW FW FW B2 B2 SC
PoP 12hr                     40          20          30           0          60
QPF 12hr                   0.24        0.07        0.14           0        0.37
Rain shwrs              C  S  S  S  S     S  S  S  C                    L  L  S
Tstms                                                                   S  S
Heat index       86 96 99 93             86 96 99 93             84 92 95 88
Max heat         86    99    99          86    99    99          84    95    94


Date          Sun 04/21/24  Mon 04/22/24  Tue 04/23/24  Wed 04/24/24
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    87      72    87      73    87      74    88
Temp          72 80 87 77   73 80 87 78   74 81 87 79   75 82 88 78
Dewpt         70 72 76 75   73 74 78 76   74 75 79 76   74 74 78 75
PWind dir        NE    NE       E     E       E    NE       E    NE
Wind char        GN    LT      GN    LT      LT    LT      LT    LT
Avg clouds    SC FW SC B1   CL CL SC B1   FW FW SC SC   CL CL SC B1
PoP 12hr         10    70       0    60       0    50       0    60
Rain shwrs     S  S  L  L          L  L          C  C          L  L
Tstms                              S  S                        S  S

$$
VIZ001-182000-
CYRIL E. King Airport-St Thomas USVI
18.33N  64.97W Elev. 23 ft
503 AM AST Thu Apr 18 2024

Date             Thu 04/18/24            Fri 04/19/24            Sat 04/20/24
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          87          77          87
Temp             82 85 86 83 80 79 78 78 83 86 87 84 81 79 78 78 83 86 87 84 80
Dewpt            74 73 74 74 74 74 73 73 73 74 74 73 73 74 73 73 73 73 73 73 73
RH               77 67 68 74 82 85 85 85 72 68 65 70 77 85 85 85 72 65 63 70 79
Wind dir         NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE
Wind spd          6  8  9  9 10  9  8  8  6  8  6  9 11 12 12 13 13 13 14 14 16
Clouds           SC SC SC SC SC B1 B2 OV B2 SC SC SC B1 B1 B2 B2 B1 B1 SC SC B2
PoP 12hr                     30          50          50          50          50
QPF 12hr                   0.14        0.30        0.17        0.14        0.14
Rain shwrs        C  C  S  S  S  C  C  C  C  S  C  C  C  C  C  C  C  C  S  S  C
Heat index       88 92 94 90 85          88 93 95 91 85          88 93 94 90 84
Max heat         88    94    93    84    88    95    95    84    88    94    94


Date          Sun 04/21/24  Mon 04/22/24  Tue 04/23/24  Wed 04/24/24
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      77    86      78    86      77    87
Temp          77 82 87 81   78 82 86 81   78 82 86 80   78 83 87 81
Dewpt         73 74 75 75   75 76 76 76   76 76 76 76   75 75 75 74
PWind dir         E     E       E     E       E     E       E     E
Wind char        BZ    BZ      BZ    GN      GN    GN      BZ    BZ
Avg clouds    B2 B2 B2 B1   SC SC SC B1   B2 B1 B1 B1   B2 B1 B1 B1
PoP 12hr         50    60      30    50      50    50      50    40
Rain shwrs     C  C  L  L    S  C  C  C    C  C  C  C    C  C  C  C
Tstms                                                             S

$$
VIZ002-182000-
Henry E. Rohlsen Airport-St Croix USVI
17.70N  64.80W Elev. 74 ft
503 AM AST Thu Apr 18 2024

Date             Thu 04/18/24            Fri 04/19/24            Sat 04/20/24
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          75          87
Temp             83 86 87 83 79 77 75 75 81 86 87 84 79 77 76 76 82 86 87 84 79
Dewpt            74 73 73 73 73 73 73 72 74 73 74 73 73 73 73 72 73 73 74 73 73
RH               74 65 63 72 82 87 94 90 79 65 65 70 82 87 90 87 74 65 65 70 82
Wind dir         NE NE NE NE NE NE NE NE NE  E NE NE NE NE NE NE NE NE NE NE NE
Wind spd          4  5  8  8  8  9  6  5  5  6  5  8 10 10  9 10 11 12 12 12 12
Clouds           SC SC FW FW SC B1 B2 B2 B1 B1 SC SC B1 B1 B1 B1 B1 B1 SC SC B1
PoP 12hr                     30          50          40          40          40
QPF 12hr                   0.12        0.29        0.18        0.11        0.12
Rain shwrs        C  C     S  S  C  C  C  C  C  S  S  C  C  C  C  C  C  S  S  C
Heat index       89 93 95 90             87 93 95 90 83          87 93 95 90 83
Max heat         89    95    94          87    95    94          87    95    94


Date          Sun 04/21/24  Mon 04/22/24  Tue 04/23/24  Wed 04/24/24
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          75    87      76    87      76    88      75    86
Temp          76 82 87 80   77 82 87 80   77 83 88 80   76 81 86 79
Dewpt         73 74 74 74   74 75 75 75   74 75 75 74   74 74 74 73
PWind dir        NE     E       E     E       E     E       E     E
Wind char        GN    GN      GN    GN      GN    GN      GN    BZ
Avg clouds    B1 B1 B1 B1   B1 B1 SC B1   B1 B1 SC B1   B2 B1 B1 B1
PoP 12hr         40    40      40    40      40    50      50    40
Rain shwrs     C  C  C  C    C  C  C  C    C  C  C  C    C  C  C  C
Tstms                                                          S  S

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.