Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
985 FOMY50 PGUM 141810 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 406 AM CHST WED OCT 15 2025 GUZ001-150600- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 406 AM CHST WED OCT 15 2025 DATE WED 10/15/25 THU 10/16/25 FRI 10/17/25 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 86 78 87 78 88 TEMP 79 83 86 85 84 82 80 78 79 83 87 86 84 82 80 79 79 84 88 87 DEWPT 77 77 77 78 78 78 78 78 78 78 78 78 79 79 79 79 79 79 78 79 RH 94 82 75 80 82 88 94100 97 85 75 77 85 91 97100100 85 72 77 WIND DIR SE SE SE SE SE E E E E E E E E E E E E E E E WIND SPD 21 23 18 16 12 11 8 4 12 13 8 9 10 10 8 8 10 14 14 13 CLOUDS OV OV OV OV OV OV OV OV B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC POP 12HR 90 90 60 30 20 QPF 12HR 2.18 1.99 0.82 0.18 0.09 RAIN SHWRS L L L L L L L L C C C C S S S S S S S S TSTMS S S S S S S S S S S S S HEAT INDEX 92 97 97 94 91 86 94 99 99 96 93 86 95102101 MAX HEAT 92 97 96 89 94 99 98 91 95 102 FLOOD A A A A A A A A DATE SAT 10/18/25 SUN 10/19/25 MON 10/20/25 TUE 10/21/25 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 78 88 78 88 78 87 78 88 TEMP 83 79 84 87 83 79 84 87 82 79 83 86 82 79 84 87 DEWPT 79 79 78 78 79 79 79 79 80 79 79 79 79 79 79 78 PWIND DIR E E E E E E E E WIND CHAR GN GN GN GN GN GN GN GN AVG CLOUDS 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 RAIN SHWRS S S C C C C C C C C C C C C C C $$ MPZ001-150600- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 406 AM CHST WED OCT 15 2025 DATE WED 10/15/25 THU 10/16/25 FRI 10/17/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 86 78 86 78 86 TEMP 79 83 86 85 84 82 80 78 79 83 86 85 84 82 80 78 79 83 86 85 DEWPT 77 77 78 78 78 78 78 78 78 78 78 79 79 79 79 78 79 79 78 79 RH 94 82 77 80 82 88 94100 97 85 77 82 85 91 97100100 88 77 82 WIND DIR SE E E SE SE SE E E E E E E E E E E E E E E WIND SPD 20 18 17 14 12 12 11 8 13 16 12 10 9 10 9 10 13 17 16 14 CLOUDS OV OV OV OV OV OV OV OV B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC POP 12HR 90 90 60 30 20 QPF 12HR 1.15 0.79 0.56 0.14 0.08 RAIN SHWRS L L L L L L L L C C C C S S S S S S S S TSTMS S S S S S S S S S S S S HEAT INDEX 92 97 97 94 91 86 93 98 98 95 92 86 93 98 98 MAX HEAT 92 97 96 89 93 98 97 91 93 98 FLOOD A A A A A A A A DATE SAT 10/18/25 SUN 10/19/25 MON 10/20/25 TUE 10/21/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 78 86 78 86 78 86 78 86 TEMP 82 78 83 85 82 78 83 85 82 78 83 85 82 78 83 86 DEWPT 79 78 79 79 79 78 79 79 79 78 79 79 79 78 79 79 PWIND DIR E E E E E E E E WIND CHAR GN BZ BZ GN GN GN GN GN AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 30 30 30 30 30 30 30 RAIN SHWRS S S C C C C C C C C C C C C C C $$ MPZ002-150600- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 406 AM CHST WED OCT 15 2025 DATE WED 10/15/25 THU 10/16/25 FRI 10/17/25 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 86 78 87 78 87 TEMP 79 83 86 85 84 82 80 78 79 83 87 86 84 82 80 79 79 84 87 87 DEWPT 78 78 78 78 78 78 78 78 78 78 78 78 79 79 79 79 79 79 79 78 RH 97 85 77 80 82 88 94100 97 85 75 77 85 91 97100100 85 77 75 WIND DIR SE E E E E E E E E E E E E E E E E E E E WIND SPD 18 17 18 12 13 16 12 8 13 16 14 12 9 8 10 12 14 17 16 14 CLOUDS OV OV OV OV OV OV OV OV B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC POP 12HR 60 60 60 40 20 QPF 12HR 0.94 0.51 0.33 0.18 0.11 RAIN SHWRS L L L L L L L L C C C C S S S S S S S S TSTMS S S S S S S S S S S S S S S S S HEAT INDEX 92 97 97 94 91 86 94100 99 97 93 86 95101100 MAX HEAT 92 97 96 89 94 100 98 91 95 101 DATE SAT 10/18/25 SUN 10/19/25 MON 10/20/25 TUE 10/21/25 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 78 87 78 87 78 87 78 87 TEMP 82 79 83 86 82 79 83 86 82 79 83 86 82 79 83 86 DEWPT 79 79 79 79 79 79 79 79 80 79 79 79 79 79 78 78 PWIND DIR E E E E E E E E WIND CHAR BZ BZ BZ BZ GN GN GN GN AVG CLOUDS 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 RAIN SHWRS S S C C C C C C C C C C C C C C $$ MPZ003-150600- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 406 AM CHST WED OCT 15 2025 DATE WED 10/15/25 THU 10/16/25 FRI 10/17/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 87 78 88 78 88 TEMP 79 83 87 86 85 82 80 79 79 84 88 87 85 83 80 79 79 84 88 87 DEWPT 78 78 78 78 78 78 78 78 78 78 78 79 79 79 79 79 79 79 79 79 RH 97 85 75 77 80 88 94 97 97 82 72 77 82 88 97100100 85 75 77 WIND DIR E E E E E E E E E E E E E E E E E E E E WIND SPD 16 17 19 11 13 16 11 8 12 16 14 12 9 8 10 12 14 17 16 14 CLOUDS OV OV OV OV OV OV OV OV B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC POP 12HR 60 60 60 40 20 QPF 12HR 0.99 0.47 0.32 0.22 0.11 RAIN SHWRS L L L L L L L L C C C C S S S S S S S S TSTMS S S S S S S S S S S S S S S S S HEAT INDEX 93 99 98 96 92 86 95102101 98 94 89 96102101 MAX HEAT 93 99 98 90 95 102 100 92 96 102 DATE SAT 10/18/25 SUN 10/19/25 MON 10/20/25 TUE 10/21/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 78 88 78 88 78 88 78 88 TEMP 83 79 84 87 83 79 84 87 83 79 84 87 83 79 84 87 DEWPT 79 79 79 79 80 79 79 79 80 79 79 79 79 79 78 78 PWIND DIR E E E E E E E E WIND CHAR BZ BZ BZ BZ GN GN GN GN AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 20 30 30 30 30 30 30 30 RAIN SHWRS S S C C C C C C C C C C C C C C $$