Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
937 FOMY50 PGUM 071800 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 356 AM CHST WED OCT 8 2025 GUZ001-080600- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 356 AM CHST WED OCT 8 2025 DATE WED 10/08/25 THU 10/09/25 FRI 10/10/25 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 76 88 76 87 TEMP 77 77 83 88 87 85 82 79 77 77 83 88 87 85 82 79 77 77 83 87 86 DEWPT 78 77 77 77 77 77 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 103100 82 70 72 77 88 97103103 85 72 75 80 88 97103103 85 75 77 WIND DIR S S S S S E NE NE NE NE NE NE NE NE NE NE NE NE E E E WIND SPD 8 6 5 4 3 4 4 4 4 5 8 8 8 9 8 5 5 6 6 5 4 CLOUDS B1 SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 40 20 10 30 30 QPF 12HR 0.07 0.09 0.14 0.22 0.16 RAIN SHWRS C S S S S S S S S S S S S C C C C S S S S TSTMS S HEAT INDEX 92100 99 95 90 93101100 96 91 92 99 98 MAX HEAT 92 100 98 88 93 101 99 89 92 99 DATE SAT 10/11/25 SUN 10/12/25 MON 10/13/25 TUE 10/14/25 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 89 76 89 76 89 76 87 TEMP 81 77 84 88 82 77 84 88 82 77 84 88 82 77 83 86 DEWPT 78 78 77 77 78 78 78 78 79 79 78 78 77 77 77 77 PWIND DIR E E E E E E E E WIND CHAR LT LT 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 TSTMS S S S S S S S $$ MPZ001-080600- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 356 AM CHST WED OCT 8 2025 DATE WED 10/08/25 THU 10/09/25 FRI 10/10/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 87 75 87 75 86 TEMP 75 76 82 87 86 84 81 77 76 76 82 87 86 84 81 77 76 76 81 85 85 DEWPT 77 77 77 77 77 77 77 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 107103 85 72 75 80 88103107107 88 75 77 82 91103107107 91 80 80 WIND DIR S S S S S SE NE NE N NE NE NE NE NE NE NE NE NE E E E WIND SPD 9 8 8 5 3 3 3 4 4 6 8 8 8 9 8 6 6 8 8 6 5 CLOUDS B2 SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC SC POP 12HR 40 20 20 20 20 QPF 12HR 0.13 0.09 0.11 0.20 0.15 RAIN SHWRS C S S S S S S S S S S S S S S S S S S S S TSTMS S HEAT INDEX 90 99 97 93 88 91 99 98 94 88 90 97 96 MAX HEAT 90 99 96 84 91 99 97 85 90 97 DATE SAT 10/11/25 SUN 10/12/25 MON 10/13/25 TUE 10/14/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 75 88 75 88 75 87 75 85 TEMP 80 76 83 87 81 76 83 87 81 76 82 86 81 76 81 85 DEWPT 78 78 78 78 78 78 78 78 79 78 78 79 77 77 77 77 PWIND DIR E E E E E E E E WIND CHAR LT LT LT GN GN GN GN GN AVG CLOUDS SC SC B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 20 20 20 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S TSTMS S S S S S $$ MPZ002-080600- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 356 AM CHST WED OCT 8 2025 DATE WED 10/08/25 THU 10/09/25 FRI 10/10/25 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 78 88 78 88 TEMP 78 79 84 88 87 85 83 80 79 79 84 88 87 85 83 80 79 79 84 88 87 DEWPT 77 78 78 77 77 77 78 78 78 78 78 78 78 78 78 79 78 78 78 78 78 RH 97 97 82 70 72 77 85 94 97 97 82 72 75 80 85 97 97 97 82 72 75 WIND DIR S S S S S SE NE NE NE E NE NE NE NE NE NE NE NE E E E WIND SPD 10 9 9 5 3 3 3 4 4 6 8 8 9 9 8 6 6 8 9 8 6 CLOUDS B2 SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC SC POP 12HR 50 20 20 20 20 QPF 12HR 0.12 0.08 0.03 0.19 0.14 RAIN SHWRS C S S S S S S S S S S S S S S S S S S S S TSTMS S HEAT INDEX 83 94100 99 96 92 87 83 94101100 97 92 88 94100 99 MAX HEAT 94 100 98 90 94 101 99 91 94 100 DATE SAT 10/11/25 SUN 10/12/25 MON 10/13/25 TUE 10/14/25 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 90 78 90 78 89 78 88 TEMP 83 79 85 89 83 79 85 89 83 79 85 88 83 79 84 87 DEWPT 78 77 78 78 78 78 78 78 79 79 78 79 77 77 77 77 PWIND DIR E E E E E E E E WIND CHAR LT LT LT GN GN GN GN GN AVG CLOUDS B1 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 TSTMS S S S S S $$ MPZ003-080600- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 356 AM CHST WED OCT 8 2025 DATE WED 10/08/25 THU 10/09/25 FRI 10/10/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 88 78 88 78 88 TEMP 78 79 84 88 87 85 82 80 78 79 84 88 87 85 82 80 78 79 84 88 87 DEWPT 78 78 78 78 77 77 78 78 78 78 78 78 78 78 78 79 78 78 78 78 78 RH 100 97 82 72 72 77 88 94100 97 82 72 75 80 88 97100 97 82 72 75 WIND DIR S S S S S E NE NE NE E NE NE NE NE NE NE NE NE E E E WIND SPD 10 9 9 5 3 3 3 4 5 6 9 8 9 9 8 6 6 9 9 8 8 CLOUDS B2 SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC SC POP 12HR 40 20 20 20 20 QPF 12HR 0.12 0.08 0.04 0.18 0.13 RAIN SHWRS C S S S S S S S S S S S S S S S S S S S S TSTMS S HEAT INDEX 94100 99 96 91 86 94101100 97 92 86 94101 99 MAX HEAT 94 100 98 90 94 101 99 91 94 101 DATE SAT 10/11/25 SUN 10/12/25 MON 10/13/25 TUE 10/14/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 78 90 78 90 78 89 78 88 TEMP 82 78 85 89 83 78 85 89 83 78 84 88 83 78 84 87 DEWPT 78 77 78 78 78 78 78 78 79 78 79 79 77 77 77 77 PWIND DIR E E E E E E E E WIND CHAR LT LT LT GN GN GN GN GN AVG CLOUDS B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 20 20 20 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S TSTMS S S S S S $$