Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
509 FOMY50 PGUM 262010 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 601 AM CHST SUN JUL 27 2025 GUZ001-270600- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 601 AM CHST SUN JUL 27 2025 DATE SUN 07/27/25 MON 07/28/25 TUE 07/29/25 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 84 77 87 78 87 TEMP 78 81 84 84 82 81 79 78 78 83 86 86 84 82 80 79 79 83 87 86 DEWPT 77 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 97 91 82 82 88 91 97100100 85 77 77 82 88 94 97 97 85 75 77 WIND DIR SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW WIND SPD 14 17 18 17 14 11 10 9 11 13 13 12 10 9 8 8 9 11 11 11 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC B1 B1 B1 B1 POP 12HR 30 30 20 20 20 QPF 12HR 0.19 0.16 0.16 0.10 0.06 RAIN SHWRS C C C C S S S S S S S S S S S S S S S S TSTMS S S S S S S S S S S S S HEAT INDEX 90 95 94 92 88 92 98 98 95 91 86 93 99 98 MAX HEAT 90 95 93 86 92 98 97 90 93 99 COAST FLOOD Y Y Y Y HIGH SURF Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y DATE WED 07/30/25 THU 07/31/25 FRI 08/01/25 SAT 08/02/25 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 77 87 77 88 78 88 TEMP 82 78 83 86 82 78 83 87 82 78 84 87 82 78 84 87 DEWPT 78 78 78 78 78 78 77 77 78 78 77 78 78 78 78 78 PWIND DIR SW SW SW SW SW S SE E WIND CHAR GN GN LT LT LT LT LT LT AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S TSTMS S S S S S S S S S S S S S S S S $$ MPZ001-270600- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 601 AM CHST SUN JUL 27 2025 DATE SUN 07/27/25 MON 07/28/25 TUE 07/29/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 83 77 85 78 85 TEMP 77 80 82 82 81 80 79 78 78 82 85 84 83 81 79 78 79 82 85 84 DEWPT 77 78 78 78 78 78 78 78 78 78 78 78 78 79 79 78 78 78 78 78 RH 100 94 88 88 91 94 97100100 88 80 82 85 94100100 97 88 80 82 WIND DIR SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW WIND SPD 20 23 23 20 18 16 14 13 14 16 16 16 14 12 11 10 11 13 13 11 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 POP 12HR 30 30 30 20 20 QPF 12HR 0.27 0.24 0.09 0.11 0.08 RAIN SHWRS C C C C C C C C S S S S S S S S S S S S TSTMS S S S S S S S S S S S S HEAT INDEX 87 91 91 89 85 91 96 95 93 90 85 91 96 96 MAX HEAT 87 91 90 84 91 96 95 89 91 96 COAST FLOOD W W W W HIGH SURF Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y DATE WED 07/30/25 THU 07/31/25 FRI 08/01/25 SAT 08/02/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 78 85 77 86 77 86 78 86 TEMP 81 78 82 85 81 77 82 85 81 78 82 85 82 78 83 86 DEWPT 78 78 78 78 78 77 78 78 78 78 78 78 78 78 78 78 PWIND DIR SW SW SW SW SW S SE E WIND CHAR GN GN GN LT LT LT LT LT AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S TSTMS S S S S S S S S S S S S S S S S $$ MPZ002-270600- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 601 AM CHST SUN JUL 27 2025 DATE SUN 07/27/25 MON 07/28/25 TUE 07/29/25 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 84 79 86 80 87 TEMP 79 81 83 83 82 81 80 80 80 83 86 85 84 83 81 80 81 84 86 86 DEWPT 78 78 78 78 78 78 78 78 78 78 78 78 79 79 79 79 79 78 78 78 RH 97 91 85 85 88 91 94 94 94 85 77 80 85 88 94 97 94 82 77 77 WIND DIR SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW WIND SPD 23 25 25 23 20 18 16 14 17 18 18 17 16 13 12 11 12 14 14 13 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 POP 12HR 40 40 30 20 20 QPF 12HR 0.34 0.33 0.13 0.12 0.09 RAIN SHWRS C C C C C C C C S S S S S S S S S S S S TSTMS S S S S S S S S S S S S HEAT INDEX 89 93 93 92 90 88 85 88 94 98 98 96 93 90 88 89 95 99 99 MAX HEAT 89 93 93 89 94 98 97 92 95 99 COAST FLOOD W W W W HIGH SURF Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y DATE WED 07/30/25 THU 07/31/25 FRI 08/01/25 SAT 08/02/25 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 80 87 79 87 79 87 78 87 TEMP 83 80 84 86 83 80 84 86 82 79 84 87 82 79 84 86 DEWPT 79 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 PWIND DIR SW SW SW SW SW S SE E WIND CHAR GN GN GN GN LT LT LT LT AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S TSTMS S S S S S S S S S S S S S S S S $$ MPZ003-270600- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 601 AM CHST SUN JUL 27 2025 DATE SUN 07/27/25 MON 07/28/25 TUE 07/29/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 85 79 87 80 87 TEMP 78 82 84 84 83 81 80 79 80 84 87 86 85 83 81 80 80 84 87 87 DEWPT 78 78 78 78 78 78 78 78 78 78 78 78 79 79 79 79 79 78 78 78 RH 100 88 82 82 85 91 94 97 94 82 75 77 82 88 94 97 97 82 75 75 WIND DIR SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW WIND SPD 21 24 23 21 19 17 16 14 16 18 18 17 16 13 12 11 12 14 14 13 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 POP 12HR 40 40 30 20 20 QPF 12HR 0.36 0.31 0.14 0.08 0.07 RAIN SHWRS C C C C C C C C S S S S S S S S S S S S TSTMS S S S S S S S S S S S S HEAT INDEX 90 95 95 93 90 86 85 94100 99 97 94 90 86 88 95101100 MAX HEAT 90 95 94 89 94 100 99 93 95 101 COAST FLOOD W W W W HIGH SURF Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y DATE WED 07/30/25 THU 07/31/25 FRI 08/01/25 SAT 08/02/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 79 87 79 88 79 88 78 88 TEMP 83 80 84 87 83 79 84 87 83 79 84 87 83 78 84 87 DEWPT 79 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 PWIND DIR SW SW SW SW SW S SE E WIND CHAR GN GN GN GN LT LT LT LT AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S TSTMS S S S S S S S S S S S S S S S S $$