Point Forecast Matrices
Issued by NWS Tiyan, Guam

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285
FOMY50 PGUM 181740
PFMGUM

POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE TIYAN GU
335 AM CHST SAT APR 19 2025

GUZ001-190600-
GUAM INTERNATIONAL AIRPORT-TIYAN GU
13.48N 144.79E ELEV. 248 FT
335 AM CHST SAT APR 19 2025

DATE                SAT 04/19/25            SUN 04/20/25            MON 04/21/25
CHST3HRLY     01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16
UTC 3HRLY     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06

MAX/MIN                      89          76          88          76          88
TEMP             77 77 84 89 88 85 82 79 77 77 83 88 87 85 82 78 77 77 83 88 87
DEWPT            76 75 74 74 75 75 76 76 76 75 75 75 75 75 76 76 76 76 76 76 76
RH               97 94 72 61 66 72 82 91 97 94 77 66 68 72 82 94 97 97 80 68 70
WIND DIR          E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E NE
WIND SPD          8 10 13 12 11 10  9  6  5  6 10  9  9  6  6  5  6  9 10 11 11
CLOUDS           SC B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC
POP 12HR                     20          20          20          20          10
QPF 12HR                   0.02        0.01        0.03        0.01        0.04
RAIN SHWRS        S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
HEAT INDEX             91 98 98 94 89          90 97 96 93 88          91 99 98
MAX HEAT               91    98    97    87    90    97    95    86    91    99


DATE               TUE 04/22/25  WED 04/23/25  THU 04/24/25  FRI 04/25/25
CHST6HRLY     22   04 10 16 22   04 10 16 22   04 10 16 22   04 10 16
UTC 6HRLY     12   18 00 06 12   18 00 06 12   18 00 06 12   18 00 06

MIN/MAX            76    88      76    89      76    87      76    86
TEMP          82   77 83 87 82   77 83 88 82   77 83 86 81   77 82 85
DEWPT         76   75 75 75 75   75 75 75 76   76 75 75 76   76 76 76
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 SC SC   SC SC SC SC   SC SC SC SC   SC SC SC
POP 12HR           20    20      20    10      20    20      20    20
RAIN SHWRS     S    S  S  S  S    S  S  S  S    S  S  S  S    S  S  S

$$
MPZ001-190600-
ROTA INTERNATIONAL AIRPORT-SINAPALU MP
14.17N 145.23E ELEV. 592 FT
335 AM CHST SAT APR 19 2025

DATE                SAT 04/19/25            SUN 04/20/25            MON 04/21/25
CHST3HRLY     01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16
UTC 3HRLY     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06

MAX/MIN                      87          77          87          77          87
TEMP             78 78 83 87 87 85 82 79 78 78 83 87 87 85 82 79 78 78 83 87 87
DEWPT            75 75 75 75 75 76 76 76 75 75 75 75 75 75 75 76 76 75 76 76 75
RH               91 91 77 68 68 75 82 91 91 91 77 68 68 72 79 91 94 91 80 70 68
WIND DIR          E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E NE
WIND SPD         13 12 14 12 11 11 10  8  6 10 12 12 12 10 11 10 10 11 12 13 12
CLOUDS           SC B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC
POP 12HR                     20          20          20          20          20
QPF 12HR                   0.04        0.08        0.04        0.05        0.03
RAIN SHWRS        S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
HEAT INDEX             91 97 96 93 89 83       90 96 95 93 89 83       91 97 96
MAX HEAT               91    97    95    87    90    96    95    87    91    97


DATE               TUE 04/22/25  WED 04/23/25  THU 04/24/25  FRI 04/25/25
CHST6HRLY     22   04 10 16 22   04 10 16 22   04 10 16 22   04 10 16
UTC 6HRLY     12   18 00 06 12   18 00 06 12   18 00 06 12   18 00 06

MIN/MAX            77    87      77    87      77    86      77    85
TEMP          82   78 83 87 82   78 83 86 82   78 83 86 81   78 82 84
DEWPT         75   75 75 75 75   75 75 75 75   75 75 76 76   76 76 76
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 SC SC   SC SC SC SC   SC SC SC SC   SC SC SC
POP 12HR           20    20      10    10      20    20      20    20
RAIN SHWRS     S    S  S  S  S    S  S  S  S    S  S  S  S    S  S  S

$$
MPZ002-190600-
TINIAN-SAN JOSE MP
14.97N 145.63E ELEV. 74 FT
335 AM CHST SAT APR 19 2025

DATE                SAT 04/19/25            SUN 04/20/25            MON 04/21/25
CHST3HRLY     01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16
UTC 3HRLY     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06

MAX/MIN                      89          76          89          76          89
TEMP             77 77 84 89 88 85 82 79 77 77 84 89 88 85 82 79 77 77 84 89 88
DEWPT            75 75 75 74 75 75 76 75 75 75 75 74 74 75 75 76 76 75 75 75 75
RH               94 94 74 61 66 72 82 88 94 94 74 61 63 72 79 91 97 94 74 64 66
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         12 14 14 13 12 12 10 10  9  9 11 12 11 10  9  9 10 11 11 11 11
CLOUDS           SC B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC
POP 12HR                     20          20          20          20          20
QPF 12HR                   0.10        0.04        0.11        0.05        0.01
RAIN SHWRS        S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
HEAT INDEX             91 98 97 94 89          91 98 97 94 89          91 98 97
MAX HEAT               91    98    97    87    91    98    96    86    91    98


DATE               TUE 04/22/25  WED 04/23/25  THU 04/24/25  FRI 04/25/25
CHST6HRLY     22   04 10 16 22   04 10 16 22   04 10 16 22   04 10 16
UTC 6HRLY     12   18 00 06 12   18 00 06 12   18 00 06 12   18 00 06

MIN/MAX            76    89      76    88      76    89      76    87
TEMP          82   77 84 88 82   77 83 87 81   77 84 88 82   77 83 86
DEWPT         75   75 75 74 75   75 75 74 75   75 75 75 76   76 76 76
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 SC SC   SC SC SC SC   SC SC SC SC   SC SC SC
POP 12HR           10    10      10    10      20    20      20    20
RAIN SHWRS     S    S  S  S  S    S  S  S  S    S  S  S  S    S  S  S

$$
MPZ003-190600-
SAIPAN INTERNATIONAL AIRPORT-OBYAN MP
15.11N 145.72E ELEV. 215 FT
335 AM CHST SAT APR 19 2025

DATE                SAT 04/19/25            SUN 04/20/25            MON 04/21/25
CHST3HRLY     01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16
UTC 3HRLY     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06

MAX/MIN                      89          76          89          76          89
TEMP             77 77 84 89 88 85 82 79 77 77 84 89 88 85 82 79 77 77 84 89 88
DEWPT            75 75 75 74 75 75 76 75 75 75 75 75 74 75 75 76 75 75 75 75 75
RH               94 94 74 61 66 72 82 88 94 94 74 64 63 72 79 91 94 94 74 64 66
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         12 14 14 13 12 11 10  9  9  9 11 11 11  9  9  9  9 10 11 11 11
CLOUDS           SC B1 B1 SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC SC SC SC SC SC
POP 12HR                     20          20          20          20          20
QPF 12HR                   0.09        0.03        0.10        0.04        0.01
RAIN SHWRS        S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
HEAT INDEX             91 98 97 94 89          91 98 97 94 89          91 98 98
MAX HEAT               91    98    97    87    91    98    96    86    91    98


DATE               TUE 04/22/25  WED 04/23/25  THU 04/24/25  FRI 04/25/25
CHST6HRLY     22   04 10 16 22   04 10 16 22   04 10 16 22   04 10 16
UTC 6HRLY     12   18 00 06 12   18 00 06 12   18 00 06 12   18 00 06

MIN/MAX            76    89      76    88      76    89      76    88
TEMP          82   77 84 88 82   77 83 87 82   77 84 88 82   77 83 87
DEWPT         75   75 75 74 75   75 75 74 75   75 75 75 76   76 76 76
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 SC SC   SC SC SC SC   SC SC SC SC   SC SC SC
POP 12HR           10    10       5    10      20    20      20    20
RAIN SHWRS     S    S  S  S  S    S  S  S  S    S  S  S  S    S  S  S

$$