Point Forecast Matrices
Issued by NWS Tiyan, Guam

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FOMY50 PGUM 160550
PFMGUM

POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE TIYAN GU
343 PM CHST WED JUL 16 2025

GUZ001-161800-
GUAM INTERNATIONAL AIRPORT-TIYAN GU
13.48N 144.79E ELEV. 248 FT
343 PM CHST WED JUL 16 2025

DATE          WED 07/16/25      THU 07/17/25            FRI 07/18/25         SAT
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                      78          88          77          87          76
TEMP             87 85 82 80 78 79 84 88 87 85 82 79 77 78 83 86 86 84 81 78 77
DEWPT            75 76 76 76 77 77 77 77 76 77 78 77 77 77 77 77 77 77 78 77 77
RH               68 75 82 88 97 94 80 70 70 77 88 94100 97 82 75 75 80 91 97100
WIND DIR         SE SE  E  E  E SE SE  E  E SE SE SE SE  E  E  E  E  E  E  E  E
WIND SPD          8  8  8  5  5  6 10 10 10  8  6  5  6  8  8  8  8  8  8  6  5
CLOUDS           B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR                     30          30          30          40          40
QPF 12HR                   0.14        0.05        0.12        0.26        0.28
RAIN SHWRS        C  C  C  C  C  S  S  S  S  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  S  S  S
HEAT INDEX       96 94 90 85       93 99 98 95 90          91 98 97 94 89
MAX HEAT         98    96    88    93    99    97    88    91    98    96    86


DATE           07/19/25  SUN 07/20/25  MON 07/21/25  TUE 07/22/25  WED 07/23/25
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      76    87      76    86      77    87      76    86
TEMP          82 86 81   77 83 86 81   77 82 86 81   77 83 86 81   76 82 86
DEWPT         77 77 77   76 76 77 77   77 77 77 76   76 77 77 77   76 77 76
PWIND DIR         E      SE     S      SE     S       S     S       S    SW
WIND CHAR        GN      LT    LT      LT    GN      GN    GN      LT    LT
AVG CLOUDS    B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1
POP 12HR         40      40    40      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  S
TSTMS          S  S  S    S  S  S  S    S  S  S  S    S  S  S  S    S  S  S

$$
MPZ001-161800-
ROTA INTERNATIONAL AIRPORT-SINAPALU MP
14.17N 145.23E ELEV. 592 FT
343 PM CHST WED JUL 16 2025

DATE          WED 07/16/25      THU 07/17/25            FRI 07/18/25         SAT
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          75          84          75
TEMP             85 83 81 78 77 77 81 85 84 82 80 77 76 76 80 83 83 81 79 77 76
DEWPT            75 76 76 76 75 76 76 76 76 77 77 76 76 76 76 76 77 77 77 77 76
RH               72 80 85 94 94 97 85 75 77 85 91 97100100 88 80 82 88 94100100
WIND DIR         SE  E  E  E SE SE SE  E  E  E  E  E  E  E  E  E  E  E  E  E NE
WIND SPD         11 10  9  8  8 10 12 12 12 11 11 10 10 10 12 12 12 11 11 10  9
CLOUDS           B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR                     30          30          30          40          40
QPF 12HR                   0.16        0.05        0.19        0.22        0.21
RAIN SHWRS        C  C  C  C  C  S  S  S  S  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  S  S  S
HEAT INDEX       94 91 87          88 94 93 90 84          86 92 91 88
MAX HEAT         95    93    85    88    94    92          86    92    91


DATE           07/19/25  SUN 07/20/25  MON 07/21/25  TUE 07/22/25  WED 07/23/25
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          83      75    84      75    84      75    83      74    84
TEMP          80 82 79   75 80 83 79   76 80 83 79   75 80 82 78   75 80 83
DEWPT         77 76 76   75 76 76 76   76 77 76 76   75 76 76 76   75 76 75
PWIND DIR         E      SE     S      SE    SE       S    SE      SE    SE
WIND CHAR        GN      GN    GN      GN    GN      GN    GN      GN    GN
AVG CLOUDS    B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1
POP 12HR         40      40    40      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

$$
MPZ002-161800-
TINIAN-SAN JOSE MP
14.97N 145.63E ELEV. 74 FT
343 PM CHST WED JUL 16 2025

DATE          WED 07/16/25      THU 07/17/25            FRI 07/18/25         SAT
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                      79          87          78          86          78
TEMP             87 85 83 81 79 80 84 87 86 84 82 80 79 79 83 86 86 84 82 80 78
DEWPT            76 76 76 76 76 76 77 77 77 77 77 77 77 77 77 77 77 78 78 77 77
RH               70 75 80 85 91 88 80 72 75 80 85 91 94 94 82 75 75 82 88 91 97
WIND DIR         SE  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E
WIND SPD         10  9  9  8  8  9 10 11 10 10  9  8  8  9  9 10 10 10  9  9 10
CLOUDS           B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR                     30          30          30          40          40
QPF 12HR                   0.19        0.09        0.14        0.19        0.26
RAIN SHWRS        C  C  C  C  C  S  S  S  S  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  S  S  S
HEAT INDEX       97 95 91 87 84 85 93 98 97 95 91 85       92 97 97 94 90 85
MAX HEAT         98    96    90    93    98    97    89    92    97    96    89


DATE           07/19/25  SUN 07/20/25  MON 07/21/25  TUE 07/22/25  WED 07/23/25
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      78    87      78    86      78    86      78    86
TEMP          83 86 82   79 83 86 82   79 83 85 82   79 83 85 82   79 83 85
DEWPT         77 77 77   76 77 77 77   76 77 77 77   76 77 77 77   76 76 77
PWIND DIR         E       E    SE      SE    SE       S    SE      SE     S
WIND CHAR        GN      GN    GN      GN    GN      GN    GN      GN    GN
AVG CLOUDS    B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1
POP 12HR         40      40    40      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

$$
MPZ003-161800-
SAIPAN INTERNATIONAL AIRPORT-OBYAN MP
15.11N 145.72E ELEV. 215 FT
343 PM CHST WED JUL 16 2025

DATE          WED 07/16/25      THU 07/17/25            FRI 07/18/25         SAT
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                      79          89          77          87          77
TEMP             88 86 83 81 79 80 85 89 88 86 82 79 78 78 83 87 86 84 81 79 77
DEWPT            76 76 77 77 76 77 77 77 77 77 78 77 77 77 77 77 78 78 78 78 77
RH               68 72 82 88 91 91 77 68 70 75 88 94 97 97 82 72 77 82 91 97100
WIND DIR         SE  E  E  E  E  E  E  E  E  E  E  E SE  E  E  E  E  E  E  E  E
WIND SPD         11 10  9  8  6  8 10 11 11 10  8  8  8  9 10 11 11 11 10  9  9
CLOUDS           B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR                     30          30          30          40          40
QPF 12HR                   0.19        0.09        0.13        0.19        0.26
RAIN SHWRS        C  C  C  C  C  S  S  S  S  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  S  S  S
HEAT INDEX       98 96 92 87    85 95101100 97 91 84       92 99 98 95 90
MAX HEAT        100    98    90    95   101    99    89    92    99    97    88


DATE           07/19/25  SUN 07/20/25  MON 07/21/25  TUE 07/22/25  WED 07/23/25
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          87      78    88      78    88      77    88      77    88
TEMP          83 86 82   78 84 87 82   78 84 87 82   78 83 87 82   78 84 87
DEWPT         78 77 77   77 77 77 77   77 77 77 77   77 77 77 77   77 77 77
PWIND DIR         E       E    SE      SE    SE      SE    SE      SE     S
WIND CHAR        GN      GN    GN      GN    GN      GN    GN      GN    GN
AVG CLOUDS    B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1
POP 12HR         40      40    40      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

$$