Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
831 FOMY50 PGUM 200520 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 318 PM CHST WED AUG 20 2025 GUZ001-201800- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 318 PM CHST WED AUG 20 2025 DATE WED 08/20/25 THU 08/21/25 FRI 08/22/25 SAT 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 77 77 78 78 78 78 78 78 77 77 78 78 78 78 77 77 77 77 78 78 78 RH 72 77 85 94 97 97 82 72 72 77 85 94 97 97 80 70 72 77 85 94 97 WIND DIR NE NE E E NE NE NE E E E E E E E E E SE E E E E WIND SPD 6 6 4 5 4 5 10 9 8 8 6 5 3 4 9 8 5 3 4 4 4 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 40 30 30 30 30 QPF 12HR 0.18 0.19 0.28 0.33 0.15 RAIN SHWRS S C C C C C C C C C C C C 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 99 96 92 87 94100 99 96 91 87 94100 99 96 92 87 MAX HEAT 100 98 90 94 100 98 90 94 100 98 90 DATE 08/23/25 SUN 08/24/25 MON 08/25/25 TUE 08/26/25 WED 08/27/25 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 86 79 89 79 88 81 88 TEMP 84 87 82 79 83 86 82 79 85 88 84 80 84 87 84 81 85 87 DEWPT 78 78 78 78 78 78 79 79 78 79 79 79 78 77 79 79 79 78 PWIND DIR SE E E E E E E E SE WIND CHAR LT LT GN GN GN GN GN LT GN AVG CLOUDS B1 B1 B1 B1 SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 POP 12HR 20 20 20 30 30 30 30 40 40 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 S S $$ MPZ001-201800- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 318 PM CHST WED AUG 20 2025 DATE WED 08/20/25 THU 08/21/25 FRI 08/22/25 SAT CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 87 78 86 78 TEMP 86 84 82 80 79 79 83 87 86 84 82 80 79 79 83 86 86 84 82 80 78 DEWPT 78 78 78 78 78 78 78 77 77 77 78 78 77 77 77 77 77 77 78 78 78 RH 77 82 88 94 97 97 85 72 75 80 88 94 94 94 82 75 75 80 88 94100 WIND DIR NE E E E NE NE NE E E E E E E E E E SE E E E E WIND SPD 8 9 9 9 8 10 11 11 10 11 9 9 8 9 11 10 8 5 6 8 8 CLOUDS SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC POP 12HR 30 30 30 30 30 QPF 12HR 0.06 0.15 0.18 0.27 0.11 RAIN SHWRS S S S S S S S S S C C C C C C C C S S S S TSTMS S S S S S S S S S S S S S S S S S S S S S HEAT INDEX 98 95 91 86 93 98 98 95 91 86 92 98 97 94 91 86 MAX HEAT 98 97 89 93 98 97 89 92 98 96 89 DATE 08/23/25 SUN 08/24/25 MON 08/25/25 TUE 08/26/25 WED 08/27/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 86 78 85 79 87 79 86 81 85 TEMP 83 85 82 78 82 85 82 79 84 86 83 79 83 85 83 81 84 85 DEWPT 78 78 78 78 78 78 79 78 79 79 79 79 78 77 79 79 79 79 PWIND DIR E E E E E E E E SE WIND CHAR LT GN GN GN GN GN GN GN GN AVG CLOUDS B1 B1 B1 SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 POP 12HR 30 30 20 20 30 30 30 40 40 RAIN SHWRS C C C S S S S S C C C C C C C C C C TSTMS S S S S S S S S S S S S S S S S S S $$ MPZ002-201800- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 318 PM CHST WED AUG 20 2025 DATE WED 08/20/25 THU 08/21/25 FRI 08/22/25 SAT 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 88 87 85 83 80 79 DEWPT 77 78 78 78 78 78 78 77 77 77 78 78 77 77 77 77 77 78 78 78 78 RH 72 80 88 94 97 97 82 72 72 77 88 94 94 94 80 70 72 80 85 94 97 WIND DIR E NE E NE NE NE NE E E E E E E E E E E E E E E WIND SPD 8 10 8 8 8 9 11 11 10 10 9 9 8 8 10 10 8 6 8 8 8 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 0.06 0.07 0.09 0.23 0.13 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 S S S S S S S HEAT INDEX 99 96 92 87 94100 99 96 91 87 94100 99 96 92 87 MAX HEAT 99 98 90 94 100 98 90 94 100 98 91 DATE 08/23/25 SUN 08/24/25 MON 08/25/25 TUE 08/26/25 WED 08/27/25 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 87 79 89 79 88 81 87 TEMP 84 87 83 79 83 86 82 79 85 88 83 80 84 87 84 81 84 86 DEWPT 78 78 78 78 78 78 79 79 79 79 80 79 79 77 79 79 79 79 PWIND DIR E E E E E E E E SE WIND CHAR LT GN GN GN GN GN GN GN GN AVG CLOUDS B1 B1 B1 SC SC SC SC SC B1 B1 B1 B1 B1 B1 B2 B2 B2 B1 POP 12HR 20 20 20 20 20 30 40 40 40 RAIN SHWRS S S 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 $$ MPZ003-201800- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 318 PM CHST WED AUG 20 2025 DATE WED 08/20/25 THU 08/21/25 FRI 08/22/25 SAT CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 88 78 88 78 TEMP 87 85 83 80 79 79 84 88 87 85 83 80 79 79 84 88 87 85 83 80 79 DEWPT 77 78 78 78 78 78 77 77 77 77 78 78 77 77 78 77 77 78 78 78 78 RH 72 80 85 94 97 97 80 70 72 77 85 94 94 94 82 70 72 80 85 94 97 WIND DIR E E E E NE NE E E E E E E E E E E E E E E E WIND SPD 6 9 9 8 6 9 11 10 10 9 9 9 6 8 9 10 8 6 8 8 6 CLOUDS B1 SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC SC POP 12HR 20 20 20 30 30 QPF 12HR 0.05 0.06 0.07 0.24 0.13 RAIN SHWRS S S S S S S S S S S S S S C C C C S S S S TSTMS S S S S S S S S HEAT INDEX 99 96 92 87 94100 99 96 92 87 94101100 97 92 88 MAX HEAT 100 98 90 94 100 98 90 94 101 99 90 DATE 08/23/25 SUN 08/24/25 MON 08/25/25 TUE 08/26/25 WED 08/27/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 88 78 86 79 88 79 88 81 87 TEMP 84 87 83 79 83 86 82 79 85 88 83 80 84 87 84 81 84 86 DEWPT 78 78 78 78 78 78 79 79 79 79 80 79 79 77 79 79 79 79 PWIND DIR E E E E E E E E SE WIND CHAR LT LT GN GN GN GN GN GN GN AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 SC B1 B1 B1 B1 B1 B1 B2 B2 B2 B1 POP 12HR 20 20 20 20 20 30 30 40 40 RAIN SHWRS S S S S S S S S S S C C C C C C C C TSTMS S S S S S S S S S S S $$