Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
831 FOMY50 PGUM 190600 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 354 PM CHST TUE AUG 19 2025 GUZ001-191800- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 354 PM CHST TUE AUG 19 2025 DATE TUE 08/19/25 WED 08/20/25 THU 08/21/25 FRI 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 86 84 82 80 79 79 84 88 87 85 83 80 79 79 84 88 87 85 83 80 79 DEWPT 77 78 78 78 78 78 78 78 77 77 78 78 78 78 78 78 77 77 78 78 78 RH 75 82 88 94 97 97 82 72 72 77 85 94 97 97 82 72 72 77 85 94 97 WIND DIR SE SE E E E SE E E NE NE E E E E E E E E E E E WIND SPD 5 3 5 5 5 5 8 8 6 8 6 5 5 6 8 9 9 9 9 8 6 CLOUDS B1 SC SC SC SC B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 50 30 20 30 30 QPF 12HR 0.13 0.04 0.06 0.26 0.33 RAIN SHWRS C C C C C S S S S S S S S C C C C C C C C TSTMS S S S S S S S S S S S S S S S S S S S S S HEAT INDEX 98 95 91 86 94100 99 96 92 87 94100 99 96 91 87 MAX HEAT 99 97 90 94 100 98 90 94 100 98 90 DATE 08/22/25 SAT 08/23/25 SUN 08/24/25 MON 08/25/25 TUE 08/26/25 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 78 88 78 86 79 89 79 88 TEMP 84 87 83 79 84 87 82 79 83 86 82 79 85 88 84 80 84 87 DEWPT 77 77 78 78 78 78 78 78 78 78 79 79 78 79 79 79 78 77 PWIND DIR E E E E E E E E E WIND CHAR LT LT LT LT LT LT GN LT GN AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 30 30 30 30 20 30 30 30 30 RAIN SHWRS C C C C C C C S S S C C C C C C C C TSTMS S S S S S S S S S S S S S S S S S $$ MPZ001-191800- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 354 PM CHST TUE AUG 19 2025 DATE TUE 08/19/25 WED 08/20/25 THU 08/21/25 FRI CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 87 78 87 78 TEMP 86 84 82 80 79 79 83 87 86 84 82 80 79 79 83 87 86 84 82 80 79 DEWPT 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 77 77 77 78 78 77 RH 77 82 88 94 97 97 85 75 77 82 88 94 97 97 85 72 75 80 88 94 94 WIND DIR SE E E E E E E NE NE E E E E E E E E E E E E WIND SPD 6 5 4 5 5 6 9 9 8 9 9 8 5 8 10 11 11 10 10 9 8 CLOUDS B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 40 40 20 20 20 QPF 12HR 0.39 0.11 0.03 0.16 0.16 RAIN SHWRS S S S C C S S S S S S S S S S S S S S S S TSTMS S S S S S S S S S S S S S HEAT INDEX 98 95 91 86 93 99 98 95 91 86 93 98 98 95 91 86 MAX HEAT 98 97 90 93 99 97 89 93 98 97 89 DATE 08/22/25 SAT 08/23/25 SUN 08/24/25 MON 08/25/25 TUE 08/26/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 86 78 86 78 85 79 87 79 86 TEMP 83 86 82 78 83 85 82 78 82 85 82 79 84 86 83 79 83 85 DEWPT 77 77 78 78 78 78 78 78 78 78 79 78 79 79 79 79 78 77 PWIND DIR E E E E E E E E E WIND CHAR GN LT LT LT LT GN GN GN GN AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 30 30 30 30 30 30 30 30 30 RAIN SHWRS C C C C C S C C C S C C C C C C C C TSTMS S S S S S S S S S S S S S S S S S $$ MPZ002-191800- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 354 PM CHST TUE AUG 19 2025 DATE TUE 08/19/25 WED 08/20/25 THU 08/21/25 FRI 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 82 80 79 79 84 87 87 85 82 80 79 79 84 87 87 85 82 80 79 DEWPT 78 78 78 78 78 78 78 78 77 78 78 78 78 78 78 77 77 77 78 78 77 RH 75 80 88 94 97 97 82 75 72 80 88 94 97 97 82 72 72 77 88 94 94 WIND DIR SE E E NE NE NE E E E E E E E E E E E E E E E WIND SPD 4 4 4 4 4 5 8 9 8 10 8 8 5 8 9 10 10 10 9 9 8 CLOUDS B1 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 0.12 0.09 0.02 0.07 0.10 RAIN SHWRS S S S C C S S S S S S S S S S S S S S S S TSTMS S S S S S HEAT INDEX 100 96 92 87 94100 99 96 92 87 94100 99 96 91 87 MAX HEAT 100 99 90 94 100 98 90 94 100 98 90 DATE 08/22/25 SAT 08/23/25 SUN 08/24/25 MON 08/25/25 TUE 08/26/25 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 78 88 78 87 79 89 79 88 TEMP 84 87 83 79 84 87 83 79 83 86 82 79 85 88 83 80 84 87 DEWPT 77 77 78 78 78 78 78 78 78 78 79 79 79 79 80 79 79 77 PWIND DIR E E E E E E E E E WIND CHAR GN LT LT LT LT GN GN GN GN AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 30 30 30 30 30 30 30 30 RAIN SHWRS S S C C C S C C C 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 $$ MPZ003-191800- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 354 PM CHST TUE AUG 19 2025 DATE TUE 08/19/25 WED 08/20/25 THU 08/21/25 FRI CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 88 78 88 78 TEMP 87 85 83 80 79 79 84 88 87 85 83 80 79 79 84 88 87 85 83 80 79 DEWPT 78 78 78 78 78 78 78 78 77 78 78 78 78 78 77 77 77 77 78 78 77 RH 75 80 85 94 97 97 82 72 72 80 85 94 97 97 80 70 72 77 85 94 94 WIND DIR SE E E NE NE NE E E E E E E E E E E E E E E E WIND SPD 5 4 4 4 4 5 9 9 6 10 8 8 5 8 9 10 10 10 9 8 8 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC B1 B1 B1 B1 POP 12HR 30 30 20 20 20 QPF 12HR 0.15 0.11 0.03 0.07 0.10 RAIN SHWRS S S S C C S S S S S S S S S S S S S S S S TSTMS S S S S S HEAT INDEX 100 97 92 87 94100 99 96 92 87 94100 99 96 92 87 MAX HEAT 101 99 90 94 100 98 90 94 100 98 90 DATE 08/22/25 SAT 08/23/25 SUN 08/24/25 MON 08/25/25 TUE 08/26/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 88 78 88 78 86 79 88 79 88 TEMP 84 87 83 79 84 87 83 79 83 86 82 79 85 88 83 80 84 87 DEWPT 78 77 78 78 78 78 78 78 78 78 79 79 79 79 80 79 79 77 PWIND DIR E E E E E E E E E WIND CHAR GN LT LT LT GN GN GN GN GN AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 30 30 20 20 30 30 RAIN SHWRS S S S S S S C C C S S S S S C C C S TSTMS S S S S S S S S S S S S S S S $$