Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
573 FOMY50 PGUM 060420 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 219 PM CHST SAT DEC 6 2025 GUZ001-061800- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 219 PM CHST SAT DEC 6 2025 DATE SAT 12/06/25 SUN 12/07/25 MON 12/08/25 TUE CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 88 78 88 77 TEMP 87 85 83 80 79 79 84 88 87 85 82 80 78 79 84 87 87 85 82 79 77 DEWPT 77 76 76 76 76 76 76 76 76 76 77 77 76 77 76 76 76 76 76 76 76 RH 72 75 80 88 91 91 77 68 70 75 85 91 94 94 77 70 70 75 82 91 97 WIND DIR E E E E E E E E NE NE NE NE NE NE NE NE E E E E E WIND SPD 10 9 9 8 8 9 11 9 9 9 8 6 6 8 9 10 10 9 9 8 6 CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 10 20 20 20 QPF 12HR 0.07 0.01 0 0.11 0.12 RAIN SHWRS S S S S S S S S S S S S S S S S S HEAT INDEX 97 95 90 86 92 98 98 95 91 85 92 98 97 94 89 83 MAX HEAT 99 97 89 92 98 97 89 92 98 96 87 HIGH SURF Y Y Y Y Y Y Y Y DATE 12/09/25 WED 12/10/25 THU 12/11/25 FRI 12/12/25 SAT 12/13/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 88 77 88 77 88 78 87 78 87 TEMP 83 87 82 78 83 87 82 78 83 87 82 78 83 87 82 78 83 86 DEWPT 75 75 76 76 76 76 76 76 76 76 77 76 77 77 77 77 77 77 PWIND DIR E E E E E E NE NE E WIND CHAR GN GN GN GN GN GN BZ BZ BZ AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 20 10 10 10 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S S S $$ MPZ001-061800- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 219 PM CHST SAT DEC 6 2025 DATE SAT 12/06/25 SUN 12/07/25 MON 12/08/25 TUE CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 86 76 86 76 TEMP 85 84 82 80 78 79 83 86 85 83 81 78 77 77 82 86 85 83 81 78 77 DEWPT 77 77 77 76 76 76 76 76 77 77 77 77 77 77 77 77 76 76 76 76 76 RH 77 80 85 88 94 91 80 72 77 82 88 97100100 85 75 75 80 85 94 97 WIND DIR E E E E E E E E E NE NE NE NE NE NE NE E E E E E WIND SPD 10 12 10 9 9 11 11 10 9 9 9 9 8 8 9 9 10 11 10 8 10 CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 POP 12HR 20 5 20 20 20 QPF 12HR 0.02 0 0 0.03 0.13 RAIN SHWRS S S S S S S S S S S S S S S S S S HEAT INDEX 96 93 89 85 91 96 95 92 87 90 96 95 92 86 MAX HEAT 97 95 88 91 96 94 85 90 96 94 85 HIGH SURF Y Y Y Y Y Y Y Y DATE 12/09/25 WED 12/10/25 THU 12/11/25 FRI 12/12/25 SAT 12/13/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 86 76 86 76 86 76 86 76 86 TEMP 82 85 81 77 82 85 81 77 82 85 81 77 82 85 81 77 82 85 DEWPT 76 75 76 75 76 76 76 76 76 76 76 77 77 77 77 77 77 77 PWIND DIR E E E E E E NE NE NE WIND CHAR GN GN GN BZ BZ BZ BZ BZ BZ AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 20 10 10 10 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S S S $$ MPZ002-061800- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 219 PM CHST SAT DEC 6 2025 DATE SAT 12/06/25 SUN 12/07/25 MON 12/08/25 TUE CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 87 78 87 78 TEMP 86 85 82 80 79 79 83 87 86 85 82 80 79 79 83 87 86 84 82 80 79 DEWPT 77 77 76 76 76 76 76 76 76 77 77 77 77 77 77 76 76 76 76 76 76 RH 75 77 82 88 91 91 80 70 72 77 85 91 94 94 82 70 72 77 82 88 91 WIND DIR E E E E E E E E E E NE NE NE NE E E E E E E E WIND SPD 10 11 10 9 9 10 10 9 10 9 9 8 6 6 10 11 11 11 9 11 9 CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC SC POP 12HR 20 5 20 20 20 QPF 12HR 0.01 0 0 0.06 0.06 RAIN SHWRS S S S S S S S S S S S S S S S S S HEAT INDEX 99 94 90 85 92 97 97 94 90 85 92 97 96 93 89 85 MAX HEAT 100 98 88 92 97 96 89 92 97 96 88 HIGH SURF Y Y Y Y Y Y Y Y DATE 12/09/25 WED 12/10/25 THU 12/11/25 FRI 12/12/25 SAT 12/13/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 87 78 86 78 86 78 87 78 86 TEMP 83 86 82 79 83 85 82 78 83 85 82 78 83 86 82 79 83 86 DEWPT 75 75 76 76 76 75 76 76 75 75 76 77 77 77 77 77 77 77 PWIND DIR E E E E E NE NE NE NE WIND CHAR GN GN GN BZ GN BZ BZ BZ BZ AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 20 10 10 10 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S S S $$ MPZ003-061800- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 219 PM CHST SAT DEC 6 2025 DATE SAT 12/06/25 SUN 12/07/25 MON 12/08/25 TUE CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 88 78 88 78 TEMP 87 85 83 80 79 79 84 88 87 85 82 80 78 79 84 87 87 85 82 80 78 DEWPT 77 77 76 76 76 76 76 76 76 77 77 77 77 77 77 76 76 76 76 76 76 RH 72 77 80 88 91 91 77 68 70 77 85 91 97 94 80 70 70 75 82 88 94 WIND DIR E E E E E E E E E E NE NE NE NE E E E E E E E WIND SPD 11 11 10 9 8 10 10 9 10 10 8 8 6 8 11 12 11 11 9 11 9 CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC SC POP 12HR 20 10 20 20 20 QPF 12HR 0.01 0.03 0.01 0.07 0.06 RAIN SHWRS S S S S S S S S S S S S S S S S S HEAT INDEX 99 95 90 86 93 98 98 95 90 85 92 98 97 94 89 84 MAX HEAT 101 98 89 93 98 97 89 92 98 96 88 HIGH SURF Y Y Y Y Y Y Y Y DATE 12/09/25 WED 12/10/25 THU 12/11/25 FRI 12/12/25 SAT 12/13/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 88 77 87 77 88 78 87 77 87 TEMP 84 87 82 78 83 87 82 78 83 87 82 78 83 86 82 78 83 86 DEWPT 75 75 76 75 76 76 76 76 75 75 76 77 77 77 77 77 77 77 PWIND DIR E E E NE E NE NE NE NE WIND CHAR GN GN GN GN GN GN BZ BZ BZ AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 20 10 10 10 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S S S $$