Point Forecast Matrices
Issued by NWS Tiyan, Guam

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3
314
FOMY50 PGUM 290530
PFMGUM

POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE TIYAN GU
328 PM CHST SUN JUN 29 2025

GUZ001-291800-
GUAM INTERNATIONAL AIRPORT-TIYAN GU
13.48N 144.79E ELEV. 248 FT
328 PM CHST SUN JUN 29 2025

DATE          SUN 06/29/25      MON 06/30/25            TUE 07/01/25         WED
CHST3HRLY     13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04
UTC 3HRLY     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18

MIN/MAX                      76          85          77          85          77
TEMP             84 82 80 78 77 77 81 85 84 83 81 79 77 78 82 85 84 83 81 79 77
DEWPT            77 77 77 77 77 77 77 77 77 77 77 78 77 77 77 77 77 77 78 78 77
RH               80 85 91 97100100 88 77 80 82 88 97100 97 85 77 80 82 91 97100
WIND DIR         SW  S  S  S  S  S  S  S SW SW SW SW SW SW SW SW SW SW SW SW SW
WIND SPD          6  3  0  2  4  9 12 13 14 13 10  9  9 10 10 10  9  9  6  8  6
CLOUDS           B2 B1 B1 OV OV OV OV OV OV OV OV OV OV OV OV OV OV B1 B1 B1 B1
POP 12HR                     60          60          60          60          60
QPF 12HR                   0.67        0.71        0.70        0.84        0.39
RAIN SHWRS        C  C  C  L  L  L  L  L  L  L  L  L  L  L  L  L  L  C  C  C  C
TSTMS             S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
HEAT INDEX       93 90 86          89 95 94 92 88          90 95 94 92 88
MAX HEAT         93    92    84    89    95    94    86    90    95    94    86
FLOOD             A  A  A  A  A


DATE           07/02/25  THU 07/03/25  FRI 07/04/25  SAT 07/05/25  SUN 07/06/25
CHST6HRLY     10 16 22   04 10 16 22   04 10 16 22   04 10 16 22   04 10 16
UTC 6HRLY     00 06 12   18 00 06 12   18 00 06 12   18 00 06 12   18 00 06

MAX/MIN          86      77    87      78    87      77    87      77    87
TEMP          82 85 81   78 83 86 82   79 83 86 82   78 83 86 82   78 83 87
DEWPT         78 78 78   78 78 78 78   78 78 78 78   77 78 78 77   77 77 77
PWIND DIR        SW      SW     S       S     S       S     S       S     S
WIND CHAR        GN      LT    LT      LT    LT      LT    LT      LT    LT
AVG CLOUDS    B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1
POP 12HR         30      30    30      30    30      30    30      30    30
RAIN SHWRS     C  C  C    C  C  C  C    C  C  C  C    C  C  C  C    C  C  C
TSTMS          S  S  S    S  S  S  S    S  S  S  S    S  S  S  S    S  S  S

$$
MPZ001-291800-
ROTA INTERNATIONAL AIRPORT-SINAPALU MP
14.17N 145.23E ELEV. 592 FT
328 PM CHST SUN JUN 29 2025

DATE          SUN 06/29/25      MON 06/30/25            TUE 07/01/25         WED
CHST3HRLY     13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04
UTC 3HRLY     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18

MIN/MAX                      75          84          76          84          76
TEMP             81 80 78 77 75 76 80 84 83 82 79 77 76 76 81 84 83 82 79 77 76
DEWPT            77 77 77 77 75 76 77 77 77 77 77 77 76 76 77 77 77 77 78 77 76
RH               88 91 97100100100 91 80 82 85 94100100100 88 80 82 85 97100100
WIND DIR          S  S  S  S  S  S  S  S  S  S SW SW SW SW SW SW SW SW SW SW SW
WIND SPD         10  4  3  4  5  9 12 13 14 14 12 10 10 12 14 13 12 12 10  9  9
CLOUDS           B2 B1 B1 OV OV OV OV OV OV OV OV OV OV OV OV OV OV B1 B1 B1 B1
POP 12HR                     60          60          60          60          60
QPF 12HR                   0.60        0.64        0.56        0.74        0.44
RAIN SHWRS        C  C  C  L  L  L  L  L  L  L  L  L  L  L  L  L  L  C  C  C  C
TSTMS             S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
HEAT INDEX       89 87             87 93 92 89 84          88 93 92 89 84
MAX HEAT         89    88          87    93    92          88    93    92
FLOOD             A  A  A  A  A


DATE           07/02/25  THU 07/03/25  FRI 07/04/25  SAT 07/05/25  SUN 07/06/25
CHST6HRLY     10 16 22   04 10 16 22   04 10 16 22   04 10 16 22   04 10 16
UTC 6HRLY     00 06 12   18 00 06 12   18 00 06 12   18 00 06 12   18 00 06

MAX/MIN          85      76    86      77    86      76    86      76    86
TEMP          81 84 80   76 82 85 81   77 82 85 80   76 82 85 80   76 82 86
DEWPT         78 78 78   76 78 78 78   77 78 78 78   76 78 78 77   76 77 77
PWIND DIR        SW      SW     S       S     S       S     S       S     S
WIND CHAR        GN      GN    GN      LT    LT      LT    LT      LT    LT
AVG CLOUDS    B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1
POP 12HR         30      30    30      30    30      30    30      30    30
RAIN SHWRS     C  C  C    C  C  C  C    C  C  C  C    C  C  C  C    C  C  C
TSTMS          S  S  S    S  S  S  S    S  S  S  S    S  S  S  S    S  S  S

$$
MPZ002-291800-
TINIAN-SAN JOSE MP
14.97N 145.63E ELEV. 74 FT
328 PM CHST SUN JUN 29 2025

DATE          SUN 06/29/25      MON 06/30/25            TUE 07/01/25         WED
CHST3HRLY     13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04
UTC 3HRLY     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18

MIN/MAX                      77          85          77          85          77
TEMP             83 82 80 79 77 78 82 85 84 83 81 79 77 78 82 85 84 83 81 79 77
DEWPT            77 77 77 77 77 77 77 77 77 77 77 78 77 77 77 77 77 77 78 78 77
RH               82 85 91 94100 97 85 77 80 82 88 97100 97 85 77 80 82 91 97100
WIND DIR          S  S  S  S  S  S  S  S  S  S  S SW SW SW  S SW SW SW SW SW SW
WIND SPD         11  8  6  6  6  8 11 12 12 13 12 11 10 13 17 16 14 13 11 10  9
CLOUDS           B2 SC SC B2 B2 OV OV OV OV OV OV OV OV OV OV OV OV B1 B1 B1 B1
POP 12HR                     40          60          60          60          60
QPF 12HR                   0.43        0.41        0.74        0.77        0.38
RAIN SHWRS        C  S  S  C  C  L  L  L  L  L  L  L  L  L  L  L  L  C  C  C  C
TSTMS             S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
HEAT INDEX       92 90 87          90 95 95 92 88          90 95 95 92 88
MAX HEAT         92    91    84    90    95    94    86    90    95    94    86


DATE           07/02/25  THU 07/03/25  FRI 07/04/25  SAT 07/05/25  SUN 07/06/25
CHST6HRLY     10 16 22   04 10 16 22   04 10 16 22   04 10 16 22   04 10 16
UTC 6HRLY     00 06 12   18 00 06 12   18 00 06 12   18 00 06 12   18 00 06

MAX/MIN          86      77    87      78    87      77    87      77    87
TEMP          82 85 81   78 83 86 82   79 83 86 82   78 83 86 82   78 83 86
DEWPT         78 78 79   78 78 78 78   78 78 78 78   78 78 78 77   77 77 77
PWIND DIR        SW      SW     S      SW     S       S     S       S     S
WIND CHAR        GN      GN    GN      LT    LT      LT    LT      LT    LT
AVG CLOUDS    B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1
POP 12HR         30      30    30      30    30      30    30      30    30
RAIN SHWRS     C  C  C    C  C  C  C    C  C  C  C    C  C  C  C    C  C  C
TSTMS          S  S  S    S  S  S  S    S  S  S  S    S  S  S  S    S  S  S

$$
MPZ003-291800-
SAIPAN INTERNATIONAL AIRPORT-OBYAN MP
15.11N 145.72E ELEV. 215 FT
328 PM CHST SUN JUN 29 2025

DATE          SUN 06/29/25      MON 06/30/25            TUE 07/01/25         WED
CHST3HRLY     13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04
UTC 3HRLY     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18

MIN/MAX                      77          85          77          85          77
TEMP             85 83 81 79 77 78 82 85 84 83 81 79 77 78 82 85 84 83 81 79 77
DEWPT            77 77 77 77 77 77 77 77 77 77 77 78 77 77 77 77 77 77 78 78 77
RH               77 82 88 94100 97 85 77 80 82 88 97100 97 85 77 80 82 91 97100
WIND DIR          S  S  S  S  S  S  S  S  S  S  S  S SW  S  S SW SW SW SW SW SW
WIND SPD         11  8  6  6  6  8 10 12 12 13 12 11 10 12 16 16 16 13 12 10 10
CLOUDS           B2 SC SC B2 B2 OV OV OV OV OV OV OV OV OV OV OV OV B1 B1 B1 B1
POP 12HR                     40          60          60          60          60
QPF 12HR                   0.40        0.40        0.73        0.78        0.40
RAIN SHWRS        C  S  S  C  C  L  L  L  L  L  L  L  L  L  L  L  L  C  C  C  C
TSTMS             S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
HEAT INDEX       94 92 88          90 95 95 92 88          90 95 95 92 88
MAX HEAT         95    94    87    90    95    94    86    90    95    94    86


DATE           07/02/25  THU 07/03/25  FRI 07/04/25  SAT 07/05/25  SUN 07/06/25
CHST6HRLY     10 16 22   04 10 16 22   04 10 16 22   04 10 16 22   04 10 16
UTC 6HRLY     00 06 12   18 00 06 12   18 00 06 12   18 00 06 12   18 00 06

MAX/MIN          86      77    87      78    87      77    87      77    87
TEMP          82 85 81   78 83 86 82   79 83 86 82   78 83 86 82   78 83 86
DEWPT         78 78 79   78 78 78 78   78 78 78 78   78 78 78 77   77 77 77
PWIND DIR        SW      SW     S      SW     S       S     S       S     S
WIND CHAR        GN      GN    GN      LT    LT      LT    LT      LT    LT
AVG CLOUDS    B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1
POP 12HR         30      30    30      30    30      30    30      30    30
RAIN SHWRS     C  C  C    C  C  C  C    C  C  C  C    C  C  C  C    C  C  C
TSTMS          S  S  S    S  S  S  S    S  S  S  S    S  S  S  S    S  S  S

$$