Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
Versions:
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844 FOMY50 PGUM 090550 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 344 PM CHST THU OCT 9 2025 GUZ001-091800- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 344 PM CHST THU OCT 9 2025 DATE THU 10/09/25 FRI 10/10/25 SAT 10/11/25 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 76 87 76 89 76 TEMP 87 85 82 79 77 77 83 87 86 84 81 78 77 77 84 89 88 85 82 79 77 DEWPT 77 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 72 80 88 97103103 85 75 77 82 91100103103 82 70 72 80 88 97103 WIND DIR NE E E E E E E E E SE E E NE E E E E E E E E WIND SPD 10 8 6 4 4 4 6 6 4 3 2 1 1 3 4 3 3 4 5 4 4 CLOUDS B1 SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 30 30 30 20 20 QPF 12HR 0.30 0.32 0.12 0.05 0.06 RAIN SHWRS S S S C C C C C C 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 99 96 90 92 99 98 95 90 94102101 97 91 MAX HEAT 100 98 88 92 99 97 88 94 102 100 89 DATE 10/12/25 MON 10/13/25 TUE 10/14/25 WED 10/15/25 THU 10/16/25 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 89 76 89 76 87 76 87 76 87 TEMP 84 88 82 77 84 88 82 77 83 86 81 77 83 86 81 77 83 86 DEWPT 78 78 79 79 78 78 79 78 78 79 79 79 79 79 79 79 79 79 PWIND DIR E E E E E E E E E WIND CHAR LT GN GN GN GN GN GN GN GN AVG CLOUDS SC B1 B1 SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 20 30 30 30 30 30 RAIN SHWRS S S S S S S S S C C C C C C C C C S TSTMS S S S S S S S S S $$ MPZ001-091800- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 344 PM CHST THU OCT 9 2025 DATE THU 10/09/25 FRI 10/10/25 SAT 10/11/25 SUN CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 75 86 75 88 75 TEMP 86 84 81 77 76 76 81 85 85 83 80 77 76 76 83 87 87 84 81 78 76 DEWPT 77 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 75 82 91103107107 91 80 80 85 94103107107 85 75 75 82 91100107 WIND DIR NE NE E E E E E E E E NE NE NE E E E E E E E E WIND SPD 10 10 8 6 5 5 6 6 2 2 2 1 1 4 4 4 4 6 6 5 5 CLOUDS B1 SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC POP 12HR 30 30 20 20 20 QPF 12HR 0.31 0.19 0.13 0.06 0.07 RAIN SHWRS S S S C C S S S S S S S S S S S S S S S S TSTMS S S S S S S S S S HEAT INDEX 98 94 88 90 97 96 92 86 92100 99 95 89 MAX HEAT 98 97 85 90 97 95 92 100 98 85 DATE 10/12/25 MON 10/13/25 TUE 10/14/25 WED 10/15/25 THU 10/16/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 88 75 87 75 85 75 85 75 85 TEMP 83 87 81 76 82 86 81 76 81 84 80 76 81 84 80 76 81 85 DEWPT 78 78 79 78 78 79 79 79 78 79 79 79 79 79 79 79 79 79 PWIND DIR E E E E E E E E E WIND CHAR GN GN GN GN GN GN GN GN GN AVG CLOUDS B1 B1 B1 SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 20 30 30 30 30 30 RAIN SHWRS S S S S S S S S C C C C C C C C C S TSTMS S S S S S S S S S $$ MPZ002-091800- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 344 PM CHST THU OCT 9 2025 DATE THU 10/09/25 FRI 10/10/25 SAT 10/11/25 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 90 78 TEMP 87 85 83 80 79 79 84 88 87 85 83 80 79 79 85 90 89 87 83 80 79 DEWPT 77 78 78 78 78 78 78 78 77 78 78 78 78 78 78 78 78 78 78 78 78 RH 72 80 85 94 97 97 82 72 72 80 85 94 97 97 80 68 70 75 85 94 97 WIND DIR NE NE E E E E E E E E E E E E E E E E E E E WIND SPD 8 11 8 6 5 6 9 6 4 3 3 3 4 4 5 5 5 8 6 6 6 CLOUDS B1 SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC POP 12HR 30 30 30 20 20 QPF 12HR 0.27 0.23 0.25 0.08 0.05 RAIN SHWRS S S S C C C C C C S S S S S S S S S S S S TSTMS S S S S S S S S S HEAT INDEX 99 97 92 88 94100 99 96 92 87 84 96103102 99 94 88 MAX HEAT 100 99 91 94 100 98 90 96 103 101 92 DATE 10/12/25 MON 10/13/25 TUE 10/14/25 WED 10/15/25 THU 10/16/25 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 90 78 89 78 88 78 88 78 88 TEMP 85 89 83 79 85 88 83 79 84 87 83 79 84 87 83 79 84 87 DEWPT 78 78 79 78 78 78 79 78 78 78 79 78 79 79 79 79 79 79 PWIND DIR E E E E E E E E E WIND CHAR GN GN GN GN GN GN GN GN GN AVG CLOUDS B1 B1 B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 20 20 20 30 30 30 RAIN SHWRS S S S S S S S S S S S S C C C C C S TSTMS S S S S S $$ MPZ003-091800- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 344 PM CHST THU OCT 9 2025 DATE THU 10/09/25 FRI 10/10/25 SAT 10/11/25 SUN CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 88 78 90 78 TEMP 87 85 82 80 78 79 84 88 87 85 82 80 78 79 85 90 89 86 83 80 78 DEWPT 77 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 72 80 88 94100 97 82 72 75 80 88 94100 97 80 68 70 77 85 94100 WIND DIR NE E E E E E E E E E E E E E E E E E E E E WIND SPD 8 11 8 6 5 8 9 6 4 3 3 3 4 4 5 5 6 8 6 6 6 CLOUDS B1 SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC POP 12HR 30 30 30 20 20 QPF 12HR 0.28 0.26 0.26 0.08 0.05 RAIN SHWRS S S S C C C C C C S S S S S S S S S S S S TSTMS S S S S S S S S S HEAT INDEX 99 96 92 86 94100 99 96 92 86 96104102 99 93 88 MAX HEAT 100 99 91 94 100 99 90 96 104 101 92 DATE 10/12/25 MON 10/13/25 TUE 10/14/25 WED 10/15/25 THU 10/16/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 90 78 89 78 88 78 88 78 88 TEMP 85 89 83 78 84 88 83 78 84 87 83 78 84 87 83 78 84 87 DEWPT 78 78 79 78 78 78 79 78 78 78 79 78 79 79 79 79 79 79 PWIND DIR E E E E E E E E E WIND CHAR GN GN GN GN GN GN GN GN GN AVG CLOUDS B1 B1 B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 20 20 20 20 20 20 20 20 RAIN SHWRS S S S S S S S S S S S S S S S S S S TSTMS S S S S S $$