Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
187 FOMY50 PGUM 061810 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 405 AM CHST TUE OCT 7 2025 GUZ001-070600- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 405 AM CHST TUE OCT 7 2025 DATE TUE 10/07/25 WED 10/08/25 THU 10/09/25 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 76 88 76 88 TEMP 77 82 86 85 83 81 78 77 77 83 88 87 85 82 79 77 77 83 88 87 DEWPT 77 77 77 77 77 77 78 78 77 77 77 77 77 78 78 78 78 78 78 78 RH 100 85 75 77 82 88100103100 82 70 72 77 88 97103103 85 72 75 WIND DIR W SW SW SW SW SW SW S S S S S SE E E E E NE NE NE WIND SPD 1 5 12 14 14 11 8 6 8 8 6 4 3 3 3 3 4 5 5 5 CLOUDS OV OV OV OV B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC POP 12HR 70 70 30 20 20 QPF 12HR 0.87 0.37 0.14 0.06 0.05 RAIN SHWRS L L L L 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 S S S S HEAT INDEX 90 97 96 93 88 92100 99 95 90 93101100 MAX HEAT 90 97 95 85 92 100 98 88 93 101 DATE FRI 10/10/25 SAT 10/11/25 SUN 10/12/25 MON 10/13/25 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 89 76 89 76 89 TEMP 82 77 83 86 81 77 84 88 82 77 84 88 82 77 84 88 DEWPT 78 78 78 78 78 78 77 77 78 78 78 78 79 79 78 78 PWIND DIR NE NE E E E E E E WIND CHAR LT LT LT LT LT LT GN GN AVG CLOUDS B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 SC POP 12HR 20 20 20 20 20 20 30 30 RAIN SHWRS S S S S S S S S S S S S C C C S TSTMS S S S S S S S $$ MPZ001-070600- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 405 AM CHST TUE OCT 7 2025 DATE TUE 10/07/25 WED 10/08/25 THU 10/09/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 85 75 87 75 87 TEMP 76 81 85 84 82 80 77 76 76 82 87 86 84 81 77 76 76 82 87 86 DEWPT 77 77 77 77 77 77 77 77 77 77 77 77 77 77 78 78 78 78 78 78 RH 103 88 77 80 85 91100103103 85 72 75 80 88103107107 88 75 77 WIND DIR E SE S SW SW S S S S S S S SE SE E E E E NE NE WIND SPD 8 8 10 14 14 12 10 8 9 8 6 4 4 4 3 3 4 5 5 6 CLOUDS OV OV OV OV B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 60 60 30 20 20 QPF 12HR 0.53 0.22 0.12 0.06 0.05 RAIN SHWRS L L L L C C C C S S S S S S S S S S S S TSTMS S S S S S S S S S S S S HEAT INDEX 88 95 94 91 85 90 99 97 93 88 91 99 98 MAX HEAT 88 95 93 90 99 96 84 91 99 DATE FRI 10/10/25 SAT 10/11/25 SUN 10/12/25 MON 10/13/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 75 86 75 88 75 88 75 87 TEMP 81 76 81 85 80 76 83 87 81 76 83 87 81 76 82 87 DEWPT 78 78 78 78 78 78 78 78 78 78 78 78 79 78 78 79 PWIND DIR NE NE E E E E E E WIND CHAR LT GN LT LT LT GN GN GN AVG CLOUDS B1 B1 SC SC SC SC SC SC B1 B1 B1 SC B1 B1 B1 B1 POP 12HR 20 20 20 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S TSTMS S S S S S $$ MPZ002-070600- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 405 AM CHST TUE OCT 7 2025 DATE TUE 10/07/25 WED 10/08/25 THU 10/09/25 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 88 78 88 TEMP 79 83 87 86 84 82 80 79 79 84 88 87 85 83 80 79 79 84 88 87 DEWPT 77 77 77 78 78 78 78 77 78 78 77 77 77 78 78 78 78 78 78 78 RH 94 82 72 77 82 88 94 94 97 82 70 72 77 85 94 97 97 82 72 75 WIND DIR SE SE SE S S S S S S S S S SE SE E E E E NE NE WIND SPD 17 18 13 16 16 13 11 9 10 9 8 6 5 4 3 3 4 5 5 6 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC POP 12HR 50 40 30 20 20 QPF 12HR 0.48 0.45 0.16 0.08 0.05 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 HEAT INDEX 93 99 98 95 91 86 83 94100 99 96 92 87 83 94101100 MAX HEAT 93 99 97 90 94 100 98 90 94 101 DATE FRI 10/10/25 SAT 10/11/25 SUN 10/12/25 MON 10/13/25 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 88 78 90 78 90 78 89 TEMP 83 79 84 87 83 79 85 89 83 79 85 89 83 79 85 88 DEWPT 78 78 78 78 78 77 78 78 78 78 78 78 79 79 78 79 PWIND DIR NE NE E E E E E E WIND CHAR LT GN LT LT LT GN GN GN AVG CLOUDS SC B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC 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 $$ MPZ003-070600- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 405 AM CHST TUE OCT 7 2025 DATE TUE 10/07/25 WED 10/08/25 THU 10/09/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 87 78 88 78 88 TEMP 79 83 87 86 84 82 80 78 79 84 88 87 85 82 80 78 79 84 88 87 DEWPT 77 77 77 78 78 78 78 78 78 78 78 77 77 78 78 78 78 78 78 78 RH 94 82 72 77 82 88 94100 97 82 72 72 77 88 94100 97 82 72 75 WIND DIR SE SE SE S S S S S S S S S SE SE E E E E NE NE WIND SPD 17 19 13 16 17 13 11 9 11 10 8 6 5 4 3 3 4 5 5 6 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC POP 12HR 50 40 30 20 20 QPF 12HR 0.36 0.37 0.14 0.07 0.06 RAIN SHWRS C C C C C C C C S S S S S S S S S S S S TSTMS S S S S S S S S HEAT INDEX 93 99 98 95 91 85 94100 99 96 91 86 94101100 MAX HEAT 93 99 97 89 94 100 98 90 94 101 DATE FRI 10/10/25 SAT 10/11/25 SUN 10/12/25 MON 10/13/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 78 88 78 90 78 90 78 89 TEMP 82 78 84 87 82 78 85 89 83 78 85 89 83 78 84 88 DEWPT 78 78 78 78 78 77 78 78 78 78 78 78 79 78 79 79 PWIND DIR NE NE E E E E E E WIND CHAR LT GN LT LT GN GN GN GN AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 20 20 20 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S $$