Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
644 FOMY50 PGUM 130740 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 530 PM CHST MON OCT 13 2025 GUZ001-131800- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 530 PM CHST MON OCT 13 2025 DATE MON 10/13/25 TUE 10/14/25 WED 10/15/25 THU 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 87 76 TEMP 83 80 78 77 77 83 87 86 84 81 78 77 77 83 87 86 84 81 78 77 DEWPT 78 78 78 77 77 78 78 78 78 78 78 77 77 78 78 78 78 79 78 77 RH 85 94100100100 85 75 77 82 91100100100 85 75 77 82 94100100 WIND DIR E E E E E E SE E E E SE SE SE SE SE SE SE SE SE SE WIND SPD 11 9 9 8 11 14 13 12 12 12 11 10 13 18 17 16 11 10 9 5 CLOUDS B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 OV OV OV OV OV OV OV OV OV OV POP 12HR 30 40 70 80 80 QPF 12HR 0.14 0.54 0.78 2.63 1.02 RAIN SHWRS S S S S C C C C C C L L O O O O L L L L TSTMS S S S S S S S S S S S S S S S S HEAT INDEX 93 87 92 99 98 94 89 92 99 98 95 90 MAX HEAT 100 84 92 99 97 87 92 99 97 88 DATE 10/16/25 FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 MON 10/20/25 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 76 88 79 88 79 89 78 88 TEMP 83 86 81 77 83 87 83 79 84 87 83 79 85 88 83 78 84 88 DEWPT 78 79 80 77 79 79 79 79 79 79 79 79 79 79 79 78 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 B2 B1 B1 B1 B1 B1 B1 B1 B1 SC B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 60 30 20 20 20 30 30 30 20 RAIN SHWRS L C C S S S S S S S C C C C C S S S TSTMS S S S S S S S S S S S S S S S $$ MPZ001-131800- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 530 PM CHST MON OCT 13 2025 DATE MON 10/13/25 TUE 10/14/25 WED 10/15/25 THU CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 75 85 75 85 75 TEMP 82 79 77 75 76 81 85 84 82 80 77 76 76 81 85 84 82 80 77 76 DEWPT 78 78 77 75 76 78 78 78 78 78 77 76 76 78 78 78 78 79 77 76 RH 88 97100100100 91 80 82 88 94100100100 91 80 82 88 97100100 WIND DIR E E E E E E SE SE E E E SE E E E E E E E E WIND SPD 13 12 11 8 13 16 16 17 18 16 17 14 17 20 17 17 16 13 12 10 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 OV OV OV OV B2 B2 B2 B2 POP 12HR 30 30 50 60 60 QPF 12HR 0.30 0.30 0.34 1.02 0.84 RAIN SHWRS C C C C C C C C C C C C L L L L L L L L TSTMS S S S S S S S S S S S S S S S S HEAT INDEX 90 90 97 96 92 85 89 97 96 92 86 MAX HEAT 98 90 97 95 89 97 95 DATE 10/16/25 FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 MON 10/20/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 85 75 87 79 87 79 87 79 87 TEMP 81 84 80 76 82 87 83 79 84 87 83 79 84 87 83 79 84 86 DEWPT 79 79 79 76 79 79 80 79 79 79 79 79 79 79 79 79 79 79 PWIND DIR E E E E E E E E E WIND CHAR GN GN GN GN GN GN GN GN GN AVG CLOUDS B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC B1 B1 POP 12HR 60 30 20 30 30 20 20 20 20 RAIN SHWRS L C C S S S C C C S S S S S S S S S TSTMS S S S S S S S S S S S S S S S $$ MPZ002-131800- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 530 PM CHST MON OCT 13 2025 DATE MON 10/13/25 TUE 10/14/25 WED 10/15/25 THU 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 87 78 TEMP 84 81 79 78 79 84 88 87 85 83 80 79 79 83 87 86 84 82 80 79 DEWPT 77 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 79 79 79 RH 80 91 97100 97 82 72 75 80 85 94 97 97 85 75 77 82 91 97100 WIND DIR E E E E E E E SE SE E SE E SE E E E E E E E WIND SPD 14 12 14 11 16 17 17 16 20 18 16 12 16 18 17 12 14 14 14 11 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 OV OV OV OV POP 12HR 30 30 40 60 60 QPF 12HR 0.17 0.17 0.34 0.43 0.71 RAIN SHWRS C C C C C C C C C C C C L L L L L L L L TSTMS S S S S S S S S S S S S S S S S HEAT INDEX 94 90 85 94101100 97 92 87 93 99 99 96 92 86 MAX HEAT 100 88 94 101 99 90 93 99 98 91 DATE 10/16/25 FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 MON 10/20/25 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 79 88 78 89 78 88 TEMP 84 87 83 79 84 87 83 80 84 87 83 78 85 88 83 78 84 87 DEWPT 79 78 79 79 79 79 80 79 79 79 79 78 79 79 79 78 79 79 PWIND DIR E E E E E E E E E WIND CHAR BZ GN GN GN GN GN GN GN GN AVG CLOUDS B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 60 30 30 30 30 20 20 20 30 RAIN SHWRS L C C C C S C C C S S S S S S S C C TSTMS S S S S S S S S S S S S S S $$ MPZ003-131800- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 530 PM CHST MON OCT 13 2025 DATE MON 10/13/25 TUE 10/14/25 WED 10/15/25 THU CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 88 78 87 78 TEMP 84 81 79 78 79 84 88 87 85 82 80 78 79 83 87 86 84 82 80 78 DEWPT 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 79 79 78 RH 82 91 97100 97 82 72 75 80 88 94100 97 85 75 77 82 91 97100 WIND DIR E E E E E SE E SE SE E SE E SE E E E E E E E WIND SPD 13 12 13 11 14 16 18 16 20 17 14 11 14 18 17 11 13 14 13 11 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 OV OV OV OV POP 12HR 30 30 40 60 60 QPF 12HR 0.18 0.37 0.41 0.38 0.59 RAIN SHWRS C C C C C C C C C C C C L L L L L L L L TSTMS S S S S S S S S S S S S S S S S HEAT INDEX 94 89 84 94101100 97 92 86 93 99 99 96 92 85 MAX HEAT 100 88 94 101 99 90 93 99 98 90 DATE 10/16/25 FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 MON 10/20/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 88 78 88 79 88 78 89 78 88 TEMP 84 87 82 78 84 87 83 80 84 87 82 78 84 88 83 78 84 87 DEWPT 79 79 79 78 80 79 80 79 79 79 79 78 79 79 79 78 79 79 PWIND DIR E E E E E E E E E WIND CHAR BZ GN GN GN GN GN GN GN GN AVG CLOUDS B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 POP 12HR 60 30 30 30 30 20 20 20 30 RAIN SHWRS L C C C C S C C C S S S S S S S C C TSTMS S S S S S S S S S S S S S S $$