Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
674 FOMY50 PGUM 301830 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 421 AM CHST SUN AUG 31 2025 GUZ001-310600- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 421 AM CHST SUN AUG 31 2025 DATE SUN 08/31/25 MON 09/01/25 TUE 09/02/25 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 78 87 78 87 TEMP 79 83 86 86 84 82 80 78 79 83 87 86 84 82 80 78 79 83 86 86 DEWPT 77 77 77 77 77 78 78 78 78 77 77 78 78 78 78 78 78 78 78 78 RH 94 82 75 75 80 88 94100 97 82 72 77 82 88 94100 97 85 77 77 WIND DIR SW S S S SE E E E E NE NE NE NE E NE NE NE E E E WIND SPD 8 10 11 11 5 8 5 4 6 10 11 12 13 10 10 10 3 12 11 11 CLOUDS B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 60 40 30 30 40 QPF 12HR 0.30 0.15 0.25 0.59 0.38 RAIN SHWRS 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 HEAT INDEX 92 98 97 94 90 85 93 99 99 96 91 85 93 99 98 MAX HEAT 92 98 96 89 93 99 98 90 93 99 DATE WED 09/03/25 THU 09/04/25 FRI 09/05/25 SAT 09/06/25 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 78 87 78 87 78 87 78 87 TEMP 82 78 83 86 82 78 83 86 82 78 83 86 82 78 83 86 DEWPT 78 78 78 78 79 78 78 78 78 78 78 78 78 78 78 78 PWIND DIR E SE SE SE E E E E WIND CHAR GN GN GN LT LT LT LT LT AVG CLOUDS B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 40 40 40 30 30 20 30 30 RAIN SHWRS C C C C C C C C C S S S C C C C TSTMS S S S S S $$ MPZ001-310600- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 421 AM CHST SUN AUG 31 2025 DATE SUN 08/31/25 MON 09/01/25 TUE 09/02/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 87 78 87 78 87 TEMP 79 83 87 86 84 82 80 78 79 83 87 86 84 82 80 78 79 83 86 86 DEWPT 77 77 77 77 77 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 94 82 72 75 80 88 94100 97 85 75 77 82 88 94100 97 85 77 77 WIND DIR SW S SE SE S E E E E NE NE NE E E NE NE NE E E E WIND SPD 8 10 10 14 2 8 6 5 8 12 12 14 17 13 12 11 12 13 13 13 CLOUDS B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 60 40 30 30 40 QPF 12HR 0.16 0 0.23 0.83 0.43 RAIN SHWRS C C C C S S S S C C C C C C C C C C C C TSTMS S S S S S S S S S S S S HEAT INDEX 92 98 97 94 90 85 93 99 99 96 91 85 93 99 98 MAX HEAT 92 98 97 89 93 99 98 90 93 99 DATE WED 09/03/25 THU 09/04/25 FRI 09/05/25 SAT 09/06/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 78 86 78 87 78 87 78 87 TEMP 82 78 83 85 82 78 83 86 82 78 83 86 82 78 83 86 DEWPT 79 78 79 78 79 78 78 78 78 78 78 78 78 78 78 78 PWIND DIR E SE SE SE E E E E WIND CHAR GN GN GN GN GN GN GN GN AVG CLOUDS B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 40 40 40 30 30 20 30 30 RAIN SHWRS C C C C C C C C C S S S C C C C TSTMS S S S S S S S $$ MPZ002-310600- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 421 AM CHST SUN AUG 31 2025 DATE SUN 08/31/25 MON 09/01/25 TUE 09/02/25 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 78 87 78 86 TEMP 79 83 86 86 84 82 79 78 79 83 86 86 84 82 79 78 79 83 86 86 DEWPT 77 77 77 77 77 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 94 82 75 75 80 88 97100 97 85 77 77 82 88 97100 97 85 77 77 WIND DIR S SW SE SE S E E E NE NE NE E E E NE NE E E E E WIND SPD 12 10 6 9 4 8 6 5 8 11 11 14 16 13 12 8 12 13 13 13 CLOUDS B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 60 40 30 30 40 QPF 12HR 1.17 0.24 0.21 0.49 0.28 RAIN SHWRS 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 HEAT INDEX 91 97 96 94 90 85 92 98 98 95 91 85 92 98 98 MAX HEAT 91 97 96 89 92 98 97 89 92 98 DATE WED 09/03/25 THU 09/04/25 FRI 09/05/25 SAT 09/06/25 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 78 86 78 87 78 87 78 87 TEMP 82 78 83 85 82 78 83 86 82 78 83 86 82 78 83 86 DEWPT 79 78 79 78 79 78 78 78 78 78 78 78 78 78 78 78 PWIND DIR E SE SE E E E E E WIND CHAR GN GN GN GN LT GN LT GN AVG CLOUDS B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 40 40 40 30 30 20 30 30 RAIN SHWRS C C C C C C C C C S S S C C C C TSTMS S S S S S $$ MPZ003-310600- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 421 AM CHST SUN AUG 31 2025 DATE SUN 08/31/25 MON 09/01/25 TUE 09/02/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 86 78 86 78 86 TEMP 79 83 86 85 84 82 79 78 79 83 86 86 84 82 79 78 79 83 86 85 DEWPT 77 77 77 77 77 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 94 82 75 77 80 88 97100 97 85 77 77 82 88 97100 97 85 77 80 WIND DIR SW E S SE S E E E NE NE NE E E E NE NE E E E E WIND SPD 16 10 10 6 3 6 6 5 8 11 11 14 16 13 11 8 11 14 14 13 CLOUDS B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 60 40 30 30 40 QPF 12HR 0.94 0.18 0.20 0.45 0.28 RAIN SHWRS C C C C S S S S C C C C C C C C C C C C TSTMS S S S S S S S S S S S S HEAT INDEX 91 97 96 94 90 85 92 98 97 94 91 85 92 98 97 MAX HEAT 91 97 96 89 92 98 97 89 92 98 DATE WED 09/03/25 THU 09/04/25 FRI 09/05/25 SAT 09/06/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 78 86 78 87 78 87 78 87 TEMP 81 78 83 85 82 78 83 86 82 78 83 86 82 78 83 86 DEWPT 79 78 79 78 79 78 78 78 78 78 78 78 78 78 78 78 PWIND DIR E SE SE E E E E E WIND CHAR GN GN GN GN LT GN LT GN AVG CLOUDS B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 40 40 40 30 30 20 30 30 RAIN SHWRS C C C C C C C C C S S S C C C C TSTMS S S S S S $$