Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
850 FOMY50 PGUM 210600 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 356 PM CHST THU AUG 21 2025 GUZ001-211800- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 356 PM CHST THU AUG 21 2025 DATE THU 08/21/25 FRI 08/22/25 SAT 08/23/25 SUN 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 75 88 78 88 78 TEMP 84 82 80 77 76 76 83 88 87 85 83 80 79 79 84 87 87 85 82 80 79 DEWPT 77 77 78 77 76 76 77 77 77 77 78 78 78 78 78 78 78 78 78 78 78 RH 80 85 94100100100 82 70 72 77 85 94 97 97 82 75 75 80 88 94 97 WIND DIR E E E NE NE E E E E E E E SE S E E E NE E E E WIND SPD 8 4 2 3 3 5 9 9 8 5 5 1 3 2 4 4 3 4 4 4 3 CLOUDS OV B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC POP 12HR 70 50 30 30 30 QPF 12HR 0.38 0.13 0.17 0.22 0.12 RAIN SHWRS L C C C C C C C C S S S S C C C C S S S S TSTMS S S S S S S S S S S S S S S S S S HEAT INDEX 99 91 85 91100 99 96 92 87 94100 99 96 92 88 MAX HEAT 100 98 91 100 98 90 94 100 99 91 DATE 08/24/25 MON 08/25/25 TUE 08/26/25 WED 08/27/25 THU 08/28/25 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 79 89 79 88 79 88 78 87 TEMP 83 86 82 79 85 88 84 80 84 87 83 79 84 87 83 79 83 86 DEWPT 78 78 79 79 78 79 79 79 78 77 79 79 79 78 77 77 77 77 PWIND DIR E E E E E SE SE SE SE WIND CHAR LT 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 B1 B1 POP 12HR 20 20 30 30 30 40 40 40 30 RAIN SHWRS S S S S C C C C C C C C C C C C C C TSTMS S S S S S S S S S S S S S $$ MPZ001-211800- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 356 PM CHST THU AUG 21 2025 DATE THU 08/21/25 FRI 08/22/25 SAT 08/23/25 SUN CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 75 86 78 86 78 TEMP 83 81 79 77 76 76 82 86 86 84 82 80 78 79 83 85 85 84 82 80 78 DEWPT 77 77 78 77 76 76 77 77 77 77 78 78 78 78 78 78 78 78 78 78 78 RH 82 88 97100100100 85 75 75 80 88 94100 97 85 80 80 82 88 94100 WIND DIR E E E NE E E E E E E E E E E E E E E E E E WIND SPD 10 8 6 6 6 8 9 10 9 8 6 5 4 5 5 6 6 6 8 8 6 CLOUDS B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC POP 12HR 50 50 30 30 30 QPF 12HR 0.21 0.22 0.16 0.22 0.12 RAIN SHWRS C C C C C C C C C S S S S C C C C S S S S TSTMS S S S S S S S S S S S S S S S S S S S S S HEAT INDEX 98 89 90 98 97 94 91 86 92 97 96 94 90 85 MAX HEAT 98 97 90 98 96 89 92 97 96 89 DATE 08/24/25 MON 08/25/25 TUE 08/26/25 WED 08/27/25 THU 08/28/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 85 79 87 79 86 79 85 78 85 TEMP 82 85 82 79 84 86 83 79 83 85 82 79 83 85 81 79 82 85 DEWPT 78 78 79 78 79 79 79 79 78 77 79 79 79 79 77 77 77 77 PWIND DIR E E E E E SE SE SE SE WIND CHAR GN GN GN GN BZ GN GN GN GN AVG CLOUDS B1 B1 B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 30 30 20 30 30 40 40 40 30 RAIN SHWRS C C C S S S C C C C C C C C C C C C TSTMS S S S S S S S S S S S S $$ MPZ002-211800- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 356 PM CHST THU AUG 21 2025 DATE THU 08/21/25 FRI 08/22/25 SAT 08/23/25 SUN 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 77 78 78 77 77 77 77 77 78 78 78 78 78 78 77 78 78 78 78 78 RH 75 80 88 94 94 94 80 70 72 80 85 94 97 97 82 70 75 80 85 94 97 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 9 6 6 8 10 10 9 8 6 8 6 4 3 6 6 5 6 8 8 6 CLOUDS B1 B1 B1 B1 B1 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC POP 12HR 30 50 30 30 30 QPF 12HR 0.15 0.11 0.12 0.29 0.11 RAIN SHWRS C C C C C C C C C S S S S C C C C S S S S TSTMS S S S S S S S S S S S S S S S S S S S S HEAT INDEX 99 94 91 86 94100 99 96 92 87 94100 99 96 92 88 MAX HEAT 99 98 89 94 100 98 91 94 100 99 91 DATE 08/24/25 MON 08/25/25 TUE 08/26/25 WED 08/27/25 THU 08/28/25 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 79 89 79 88 79 87 78 86 TEMP 83 86 82 79 85 88 83 80 84 87 83 79 84 86 82 79 83 86 DEWPT 78 78 79 79 79 79 80 79 79 77 79 79 79 79 78 78 77 77 PWIND DIR E E E E SE SE SE SE SE WIND CHAR GN GN GN GN GN GN BZ GN GN AVG CLOUDS SC SC B1 B1 B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 30 30 40 40 30 30 RAIN SHWRS S S S S S S C C C C C C C C C C C C TSTMS S S S S S S S S S S S S S S S $$ MPZ003-211800- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 356 PM CHST THU AUG 21 2025 DATE THU 08/21/25 FRI 08/22/25 SAT 08/23/25 SUN CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 88 78 88 78 TEMP 86 84 82 80 79 79 84 88 87 85 83 80 79 79 84 88 87 85 83 80 79 DEWPT 77 77 78 78 77 77 78 77 77 78 78 78 78 78 78 78 78 78 78 78 78 RH 75 80 88 94 94 94 82 70 72 80 85 94 97 97 82 72 75 80 85 94 97 WIND DIR E E E E E E E E E E E E E E E E E E E E E WIND SPD 10 8 8 8 8 9 10 9 8 6 8 5 5 3 6 5 3 6 8 6 6 CLOUDS B1 B1 B1 B1 B1 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC POP 12HR 30 40 30 30 30 QPF 12HR 0.05 0.11 0.11 0.29 0.11 RAIN SHWRS C C C C C C C C C S S S S C C C C S S S S TSTMS S S S S S S S S S S S S S S S S HEAT INDEX 99 95 91 86 94101100 97 92 88 94101100 97 93 88 MAX HEAT 100 98 89 94 101 99 90 94 101 99 91 DATE 08/24/25 MON 08/25/25 TUE 08/26/25 WED 08/27/25 THU 08/28/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 86 79 88 79 88 79 87 78 86 TEMP 83 86 82 79 85 88 83 80 84 87 83 79 84 86 82 79 83 86 DEWPT 78 78 79 79 79 79 80 79 79 77 79 79 79 79 78 78 77 77 PWIND DIR E E E E SE SE SE SE SE WIND CHAR GN GN GN GN GN GN BZ GN GN AVG CLOUDS SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 30 30 40 40 30 30 RAIN SHWRS S S S S S S C C C C C C C C C C C C TSTMS S S S S S S S S S S S S S S S S $$