Point Forecast Matrices
Issued by NWS Tiyan, Guam

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894
FOMY50 PGUM 292040
PFMGUM

POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE TIYAN GU
636 AM CHST SAT AUG 30 2025

GUZ001-300600-
GUAM INTERNATIONAL AIRPORT-TIYAN GU
13.48N 144.79E ELEV. 248 FT
636 AM CHST SAT AUG 30 2025

DATE                SAT 08/30/25            SUN 08/31/25            MON 09/01/25
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                      86          77          86          77          88
TEMP                79 84 86 85 83 81 79 78 78 82 86 85 83 81 79 78 78 84 88 87
DEWPT               78 78 78 78 78 77 77 77 77 77 78 77 77 78 78 78 78 78 78 78
RH                  97 82 77 80 85 88 94 97 97 85 77 77 82 91 97100100 82 72 75
WIND DIR             E  E SE  S NW NE  S SE NW  N  N  E  E  E SE SE SW  E  E NE
WIND SPD             6  5  5 11  3  3 23  8  1  1  3  5  6  5  4  3  1  6  6  8
CLOUDS              OV OV OV OV OV OV OV OV B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR                     60          70          70          50          30
QPF 12HR                   1.03        1.73        0.36        0.15        0.10
RAIN SHWRS           L  L  L  L  L  L  L  L  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
HEAT INDEX             92 98 97 94 89          91 97 96 93 89          94101100
MAX HEAT               92    98    96    87    91    97    95    88    94   101


DATE               TUE 09/02/25  WED 09/03/25  THU 09/04/25  FRI 09/05/25
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    86      77    86      77    86      77    88
TEMP          82   78 82 85 81   78 82 85 81   78 82 85 81   78 83 87
DEWPT         78   78 78 78 78   78 78 78 78   78 78 78 79   78 78 78
PWIND DIR          NE    NE       E    SE      SE    SE      SE     E
WIND CHAR          GN    GN      GN    GN      GN    LT      LT    LT
AVG CLOUDS    B1   B1 B1 B1 B1   B1 B2 B2 B2   B2 B2 B1 B1   B1 B1 B1
POP 12HR           40    40      40    40      40    40      40    30
RAIN SHWRS     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

$$
MPZ001-300600-
ROTA INTERNATIONAL AIRPORT-SINAPALU MP
14.17N 145.23E ELEV. 592 FT
636 AM CHST SAT AUG 30 2025

DATE                SAT 08/30/25            SUN 08/31/25            MON 09/01/25
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                      85          76          85          76          87
TEMP                78 82 85 84 82 80 78 76 77 81 85 84 82 80 78 76 77 82 86 86
DEWPT               77 78 78 78 78 78 77 76 77 77 78 78 78 78 78 76 77 78 78 78
RH                  97 88 80 82 88 94 97100100 88 80 82 88 94100100100 88 77 77
WIND DIR            SE SE  S  E SW  E SE  S SW SW SW  E  E  E SE SE  E  E  E NE
WIND SPD             6  8  3  4  8  4 18 16  8  5  4  1  5  6  6  2  2 10 10 10
CLOUDS              OV OV OV OV OV OV OV OV B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR                     60          70          70          50          30
QPF 12HR                   0.93        2.05        0.39        0.12        0.10
RAIN SHWRS           L  L  L  L  L  L  L  L  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
HEAT INDEX             90 96 95 91 85          89 96 95 91 86          91 99 98
MAX HEAT               90    96    94          89    96    94          91    99


DATE               TUE 09/02/25  WED 09/03/25  THU 09/04/25  FRI 09/05/25
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    85      76    85      76    85      76    86
TEMP          81   76 81 84 80   76 81 84 80   76 81 84 80   76 82 85
DEWPT         78   76 78 78 78   76 78 78 79   76 78 78 79   76 79 78
PWIND DIR          NE    NE       E    SE      SE    SE       E     E
WIND CHAR          GN    GN      GN    GN      GN    GN      GN    GN
AVG CLOUDS    B1   B1 B1 B1 B1   B1 B2 B2 B2   B2 B2 B1 B1   B1 B1 B1
POP 12HR           40    40      40    40      40    40      40    30
RAIN SHWRS     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

$$
MPZ002-300600-
TINIAN-SAN JOSE MP
14.97N 145.63E ELEV. 74 FT
636 AM CHST SAT AUG 30 2025

DATE                SAT 08/30/25            SUN 08/31/25            MON 09/01/25
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                      85          77          85          77          88
TEMP                79 83 85 85 83 81 79 77 78 82 85 85 83 81 79 77 78 83 87 87
DEWPT               78 78 77 78 78 78 77 77 77 77 78 78 78 78 78 77 78 78 78 78
RH                  97 85 77 80 85 91 94100 97 85 80 80 85 91 97100100 85 75 75
WIND DIR            SE  E SE  E  E  S  S  S SW SW SW  S SE SE SE SE  E  E  E NE
WIND SPD            11  9  6  3 13 10 16 20 13 11  6  4  5  5  5  2  2  8 10 10
CLOUDS              OV OV OV OV OV OV OV OV B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR                     60          70          70          50          30
QPF 12HR                   0.18        1.38        0.39        0.06        0.11
RAIN SHWRS           L  L  L  L  L  L  L  L  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
HEAT INDEX             91 96 95 92 89          90 96 95 92 89          93100 99
MAX HEAT               91    96    95    87    90    96    95    88    93   100


DATE               TUE 09/02/25  WED 09/03/25  THU 09/04/25  FRI 09/05/25
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    85      77    85      77    85      77    87
TEMP          82   78 82 85 81   77 82 85 81   77 82 85 81   77 83 86
DEWPT         78   78 78 78 78   77 78 78 79   77 78 78 79   77 78 78
PWIND DIR          NE    NE       E    SE      SE    SE       E     E
WIND CHAR          GN    GN      GN    GN      GN    GN      LT    GN
AVG CLOUDS    B1   B1 B1 B1 B1   B1 B2 B2 B2   B2 B2 B1 B1   B1 B1 B1
POP 12HR           40    40      40    40      40    40      40    30
RAIN SHWRS     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

$$
MPZ003-300600-
SAIPAN INTERNATIONAL AIRPORT-OBYAN MP
15.11N 145.72E ELEV. 215 FT
636 AM CHST SAT AUG 30 2025

DATE                SAT 08/30/25            SUN 08/31/25            MON 09/01/25
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                      85          77          85          77          87
TEMP                79 83 85 85 83 81 79 77 78 82 85 85 83 81 79 77 78 83 87 87
DEWPT               78 78 78 78 78 78 77 77 77 77 78 78 78 78 78 77 78 78 78 78
RH                  97 85 80 80 85 91 94100 97 85 80 80 85 91 97100100 85 75 75
WIND DIR             E SE SE  E  E  S  S  S SW SW SW  S SE SE SE SE  E  E  E NE
WIND SPD             9  8  6  4 12 12 16 18 14 11  6  5  5  5  5  3  2  9 10 10
CLOUDS              OV OV OV OV OV OV OV OV B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR                     60          70          70          50          30
QPF 12HR                   0.32        1.27        0.40        0.06        0.11
RAIN SHWRS           L  L  L  L  L  L  L  L  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
HEAT INDEX             91 96 96 93 89          90 96 95 93 89          93100 99
MAX HEAT               91    96    95    87    90    96    95    88    93   100


DATE               TUE 09/02/25  WED 09/03/25  THU 09/04/25  FRI 09/05/25
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    85      77    85      77    85      77    87
TEMP          82   78 82 85 81   77 82 85 81   77 82 85 81   77 83 86
DEWPT         78   78 78 78 78   77 78 78 79   77 78 78 79   77 78 78
PWIND DIR          NE    NE       E    SE      SE    SE       E     E
WIND CHAR          GN    GN      GN    GN      GN    GN      LT    GN
AVG CLOUDS    B1   B1 B1 B1 B1   B1 B2 B2 B2   B2 B2 B1 B1   B1 B1 B1
POP 12HR           40    40      40    40      40    40      40    30
RAIN SHWRS     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

$$