Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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362 FOMY50 PGUM 161800 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 358 AM CHST FRI OCT 17 2025 GUZ001-170600- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 358 AM CHST FRI OCT 17 2025 DATE FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 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 87 78 88 TEMP 79 79 84 88 87 85 82 80 78 79 83 87 86 85 82 80 78 79 84 87 87 DEWPT 77 77 77 77 77 78 78 78 77 78 78 78 78 79 79 78 78 78 78 78 78 RH 94 94 80 70 72 80 88 94 97 97 85 75 77 82 91 94100 97 82 75 75 WIND DIR E E E E E E E E E E E E E E E E E E E E E WIND SPD 6 11 14 13 12 11 9 9 8 10 14 13 13 13 11 8 9 11 14 13 13 CLOUDS B1 SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC POP 12HR 20 20 30 30 30 QPF 12HR 0.07 0.04 0.14 0.20 0.11 RAIN SHWRS S S S S S S S S S C C C C C C C C S S S S TSTMS S S S S HEAT INDEX 84 94100 99 97 92 86 94100100 97 92 86 94101100 MAX HEAT 94 100 99 90 94 100 99 90 94 101 DATE MON 10/20/25 TUE 10/21/25 WED 10/22/25 THU 10/23/25 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 77 86 78 87 77 86 77 87 TEMP 82 78 83 85 82 78 83 86 81 77 82 85 81 77 83 86 DEWPT 78 78 77 77 78 77 77 77 78 77 77 77 77 76 77 77 PWIND DIR E E E SE SE SE SE E WIND CHAR GN GN GN GN LT GN LT GN AVG CLOUDS B1 B1 B1 B1 B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 SC POP 12HR 20 30 30 20 30 30 30 30 RAIN SHWRS S S C C C S S S C C C C C C C S TSTMS S S S S S S S S S S S S S S S S $$ MPZ001-170600- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 358 AM CHST FRI OCT 17 2025 DATE FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 85 76 85 75 86 TEMP 77 77 82 85 84 83 80 78 76 77 81 85 84 82 80 77 76 76 82 86 85 DEWPT 76 76 77 77 77 77 78 77 76 77 78 78 77 78 78 77 76 76 78 77 77 RH 97 97 85 77 80 82 94 97100100 91 80 80 88 94100100100 88 75 77 WIND DIR E E E E E E E E E E E E E E E E E E E E E WIND SPD 10 13 16 14 13 13 11 11 10 13 16 16 16 16 14 13 11 14 16 14 14 CLOUDS B1 SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC SC POP 12HR 20 20 20 30 30 QPF 12HR 0.07 0.06 0.10 0.17 0.10 RAIN SHWRS S S S S S S S S S S S S S C C C C S S S S HEAT INDEX 89 95 94 91 87 89 96 95 92 85 90 97 96 MAX HEAT 89 95 94 84 89 96 94 90 97 DATE MON 10/20/25 TUE 10/21/25 WED 10/22/25 THU 10/23/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 76 85 76 86 76 85 76 85 TEMP 81 77 81 84 80 77 82 85 81 77 81 84 80 77 82 85 DEWPT 77 77 77 77 77 77 77 77 77 77 77 76 77 76 76 76 PWIND DIR E E E SE SE SE SE E WIND CHAR GN GN GN GN GN GN GN GN AVG CLOUDS SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 30 30 20 30 30 30 30 RAIN SHWRS S S C C C S S S C C C C C C C S TSTMS S S S S S S S S S S S S S S S S $$ MPZ002-170600- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 358 AM CHST FRI OCT 17 2025 DATE FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 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 79 88 79 87 TEMP 79 80 84 88 87 85 83 81 80 80 84 88 87 85 83 81 80 80 84 87 86 DEWPT 77 77 78 78 78 78 78 78 77 78 78 78 78 78 78 78 78 78 78 78 78 RH 94 91 82 72 75 80 85 91 91 94 82 72 75 80 85 91 94 94 82 75 77 WIND DIR E E E E E E E E E E E E E E E E E E E E E WIND SPD 10 13 14 13 12 13 11 11 10 13 14 14 14 16 13 13 11 14 16 14 14 CLOUDS B1 SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 30 30 QPF 12HR 0.03 0.06 0.09 0.09 0.09 RAIN SHWRS S S S S S S S S S S S S S C C C C S S S S TSTMS S HEAT INDEX 84 86 95101100 97 93 89 85 86 95101100 97 93 89 85 86 94 99 98 MAX HEAT 85 95 101 99 92 95 101 99 91 94 99 DATE MON 10/20/25 TUE 10/21/25 WED 10/22/25 THU 10/23/25 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 86 79 87 79 85 79 87 TEMP 83 79 83 85 82 79 84 86 83 79 83 84 82 79 84 86 DEWPT 78 77 78 77 77 77 78 78 77 77 77 77 77 77 77 77 PWIND DIR E E E SE SE SE SE SE WIND CHAR GN GN GN GN GN GN GN GN AVG CLOUDS B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 30 30 20 30 30 30 30 RAIN SHWRS S S C C C S S S C C C S C C C S TSTMS S S S S S S S S S S S S S S S S $$ MPZ003-170600- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 358 AM CHST FRI OCT 17 2025 DATE FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 89 79 88 79 88 TEMP 79 80 85 89 88 86 84 81 80 80 84 88 87 85 83 81 79 80 84 88 87 DEWPT 78 78 78 78 78 78 79 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 97 94 80 70 72 77 85 91 94 94 82 72 75 80 85 91 97 94 82 72 75 WIND DIR E E E E E E E E E E E E E E E E E E E E E WIND SPD 10 13 14 13 13 13 11 11 10 13 16 14 14 16 13 13 11 14 16 14 14 CLOUDS B1 SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 20 20 QPF 12HR 0.04 0.06 0.08 0.08 0.10 RAIN SHWRS S S S S S S S S S S S S S S S S S S S S S TSTMS S HEAT INDEX 85 87 97103102 99 95 89 85 86 96102101 98 93 89 84 85 96101100 MAX HEAT 85 97 103 101 93 96 102 100 91 96 101 DATE MON 10/20/25 TUE 10/21/25 WED 10/22/25 THU 10/23/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 79 87 78 87 77 85 77 87 TEMP 83 79 84 86 82 79 83 86 82 77 82 84 81 78 83 86 DEWPT 78 78 78 78 77 77 78 78 78 77 78 77 78 77 78 77 PWIND DIR E E E SE SE SE SE SE WIND CHAR GN GN GN GN GN GN GN GN AVG CLOUDS B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 30 30 20 30 30 30 30 RAIN SHWRS S S C C C S S S C C C S C C C S TSTMS S S S S S S S S S S S S S S S S $$