Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
170 FOMY50 PGUM 281710 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 302 AM CHST FRI AUG 29 2025 GUZ001-290600- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 302 AM CHST FRI AUG 29 2025 DATE FRI 08/29/25 SAT 08/30/25 SUN 08/31/25 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 88 77 88 77 88 TEMP 77 78 83 88 87 85 82 79 78 78 83 88 87 85 82 79 78 78 83 88 87 DEWPT 78 78 78 78 79 79 79 79 78 78 78 78 79 79 79 78 78 78 78 78 78 RH 103100 85 72 77 82 91100100100 85 72 77 82 91 97100100 85 72 75 WIND DIR E E E E E E E E E E E E SE S S S SW S S S S WIND SPD 6 6 10 10 10 9 6 5 4 6 10 8 6 5 8 6 8 6 10 10 9 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 OV OV OV OV POP 12HR 20 50 50 40 60 QPF 12HR 0.13 0.50 0.50 0.38 0.83 RAIN SHWRS S S S S S C C C C C C C C C C C C L L L L TSTMS S S S S S S S S S S S S S S S S S S S S S HEAT INDEX 94101101 97 92 84 94101101 97 91 84 94101100 MAX HEAT 94 101 100 90 94 101 100 90 94 101 DATE MON 09/01/25 TUE 09/02/25 WED 09/03/25 THU 09/04/25 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 88 77 88 77 88 80 86 TEMP 82 78 84 87 82 78 83 87 82 78 83 87 84 81 84 85 DEWPT 78 78 78 78 78 78 78 78 78 78 78 78 79 78 78 78 PWIND DIR S SE E NE NE SE SE S WIND CHAR LT LT LT GN GN GN GN GN AVG CLOUDS B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 60 30 30 30 40 40 40 40 RAIN SHWRS L C C C C S 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 $$ MPZ001-290600- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 302 AM CHST FRI AUG 29 2025 DATE FRI 08/29/25 SAT 08/30/25 SUN 08/31/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 85 76 85 76 85 TEMP 76 77 81 85 85 83 80 78 76 77 81 85 85 83 80 78 76 77 81 85 85 DEWPT 76 77 79 79 79 79 79 78 76 77 79 79 79 79 79 78 76 77 78 78 78 RH 100100 94 82 82 88 97100100100 94 82 82 88 97100100100 91 80 80 WIND DIR E E E E E E E E E E E E SE SE S S S S S S S WIND SPD 9 10 12 12 12 10 10 8 8 11 12 10 8 6 10 11 10 9 12 13 11 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 OV OV OV OV POP 12HR 20 40 40 40 60 QPF 12HR 0.11 0.34 0.50 0.38 1.13 RAIN SHWRS S S S S S C C C C C C C C C C C C O O O O TSTMS S S S S S S S S S S S S S S S S S S S S S HEAT INDEX 91 98 97 94 89 91 97 97 93 88 90 97 96 MAX HEAT 91 98 96 84 91 97 95 84 90 97 DATE MON 09/01/25 TUE 09/02/25 WED 09/03/25 THU 09/04/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 76 87 76 86 76 86 80 85 TEMP 80 76 82 86 81 76 82 85 80 76 82 85 83 81 83 85 DEWPT 79 76 78 78 78 76 78 78 78 76 78 78 78 78 78 78 PWIND DIR S SE E E E E SE SE WIND CHAR LT LT LT GN GN GN GN GN AVG CLOUDS B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 POP 12HR 60 40 40 30 30 30 40 40 RAIN SHWRS O C C C C C C S C C C C C C C C TSTMS S S S S S S S S S S S S S $$ MPZ002-290600- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 302 AM CHST FRI AUG 29 2025 DATE FRI 08/29/25 SAT 08/30/25 SUN 08/31/25 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 77 78 83 86 86 84 81 79 78 78 83 86 86 84 81 79 78 78 83 86 86 DEWPT 78 78 79 79 79 79 79 79 78 78 79 79 79 79 79 79 78 78 78 78 78 RH 103100 88 80 80 85 94100100100 88 80 80 85 94100100100 85 77 77 WIND DIR E E E E E E E E E E E E E SE SE S S S S S S WIND SPD 10 11 12 12 12 10 11 9 8 11 11 12 11 11 11 10 10 11 11 13 10 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 OV OV OV OV POP 12HR 30 30 30 30 60 QPF 12HR 0.20 0.30 0.27 0.37 1.15 RAIN SHWRS S C C C C C C C C C C C C C C C C O O O O TSTMS S S S S S S S S S S S S S S S S S S S S S HEAT INDEX 93100 99 96 92 93100 99 95 91 92 99 98 MAX HEAT 93 100 98 90 93 100 98 89 92 99 DATE MON 09/01/25 TUE 09/02/25 WED 09/03/25 THU 09/04/25 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 88 77 87 77 87 80 85 TEMP 81 78 83 87 82 78 83 86 82 78 83 86 83 81 83 85 DEWPT 78 78 78 78 78 78 78 78 79 78 78 78 78 78 78 78 PWIND DIR S SE E E E E SE SE WIND CHAR GN LT LT LT GN GN GN GN AVG CLOUDS B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 60 40 40 30 30 30 40 40 RAIN SHWRS O C C C C C C S C C C C C C C C TSTMS S S S S S S S S S S S S S $$ MPZ003-290600- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 302 AM CHST FRI AUG 29 2025 DATE FRI 08/29/25 SAT 08/30/25 SUN 08/31/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 87 77 87 77 87 TEMP 77 78 83 86 86 84 81 79 78 78 83 86 86 84 81 79 78 78 83 86 86 DEWPT 78 78 79 79 79 79 80 79 78 78 79 79 79 79 79 79 78 78 78 78 78 RH 103100 88 80 80 85 97100100100 88 80 80 85 94100100100 85 77 77 WIND DIR E E E E E E E E E E E E E SE SE S S S S S S WIND SPD 10 10 12 12 12 11 12 9 8 10 11 12 11 11 11 10 10 11 11 13 10 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 OV OV OV OV POP 12HR 30 30 30 30 60 QPF 12HR 0.18 0.23 0.26 0.37 1.28 RAIN SHWRS S C C C C C C C C C C C C C C C C O O O O TSTMS S S S S S S S S S S S S S S S S S S S S S HEAT INDEX 93100 99 96 92 93100 99 95 91 92 99 98 MAX HEAT 93 100 99 90 93 100 98 89 92 99 DATE MON 09/01/25 TUE 09/02/25 WED 09/03/25 THU 09/04/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 77 87 77 87 77 87 80 85 TEMP 81 78 83 87 82 78 83 86 82 78 83 86 83 81 83 85 DEWPT 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 PWIND DIR S S E E E E SE SE WIND CHAR GN LT LT LT GN GN GN GN AVG CLOUDS B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 60 40 40 30 30 30 40 40 RAIN SHWRS O C C C C C C S C C C C C C C C TSTMS S S S S S S S S S S S S S $$