Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
Versions:
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560 FOMY50 PGUM 121810 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 400 AM CHST MON OCT 13 2025 GUZ001-130600- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 400 AM CHST MON OCT 13 2025 DATE MON 10/13/25 TUE 10/14/25 WED 10/15/25 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 89 76 87 76 87 TEMP 77 77 84 89 88 85 82 79 77 77 83 87 86 84 81 78 77 77 83 87 86 DEWPT 77 77 78 78 78 78 78 78 77 77 78 78 78 78 78 78 77 77 78 78 78 RH 100100 82 70 72 80 88 97100100 85 75 77 82 91100100100 85 75 77 WIND DIR E E E E E E E E E E E E SE E E E E E NE E SE WIND SPD 4 8 11 12 11 11 9 9 6 9 12 12 10 12 11 8 8 10 18 17 18 CLOUDS B1 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 50 70 QPF 12HR 0.13 0.19 0.32 0.69 2.62 RAIN SHWRS C C C C C C C C C C C C C C C C C L L L L TSTMS S S S S S S S S S S S S S S S S HEAT INDEX 94102101 97 91 92 99 98 95 90 92 99 98 MAX HEAT 94 102 100 89 92 99 97 88 92 99 DATE THU 10/16/25 FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 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 76 87 76 88 79 88 79 89 TEMP 81 77 83 86 81 77 83 87 83 79 84 87 83 79 85 88 DEWPT 79 77 79 78 79 77 79 79 80 79 79 79 79 79 79 79 PWIND DIR SE SE SE E E E E E WIND CHAR BZ GN GN GN GN GN GN GN AVG CLOUDS OV OV B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC POP 12HR 70 60 30 30 20 20 20 20 RAIN SHWRS L L L C C C C S S S S S S S S S TSTMS S S S S S S S S S $$ MPZ001-130600- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 400 AM CHST MON OCT 13 2025 DATE MON 10/13/25 TUE 10/14/25 WED 10/15/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 87 75 85 75 85 TEMP 75 76 82 87 86 84 81 78 76 76 81 85 84 82 80 77 76 76 81 85 84 DEWPT 75 76 78 77 78 78 78 78 76 76 78 78 78 78 78 77 76 76 78 78 78 RH 100100 88 72 77 82 91100100100 91 80 82 88 94100100100 91 80 82 WIND DIR E E E E E E E E E E E SE E SE E E E E E E E WIND SPD 9 10 12 13 13 13 12 12 11 12 16 16 13 16 13 12 11 14 20 20 21 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 OV OV OV OV POP 12HR 30 30 40 40 60 QPF 12HR 0.22 0.19 0.27 0.30 1.17 RAIN SHWRS C C C C C C C C C C C C C C C C C L L L L TSTMS S S S S S S S S S S S S HEAT INDEX 91 99 99 95 89 90 97 96 92 86 90 97 96 MAX HEAT 91 100 98 85 90 97 95 90 97 DATE THU 10/16/25 FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 75 85 75 87 79 87 79 87 TEMP 80 76 81 84 80 76 82 87 83 79 84 87 83 79 84 87 DEWPT 79 76 79 79 79 76 79 79 80 79 79 79 79 79 79 79 PWIND DIR SE SE E E E E E E WIND CHAR BZ GN GN GN GN GN GN GN AVG CLOUDS OV B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 SC B1 B1 B1 SC POP 12HR 60 60 30 30 20 20 20 20 RAIN SHWRS L L L C C C C S S S S S S S S S TSTMS S S S S S S S S S $$ MPZ002-130600- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 400 AM CHST MON OCT 13 2025 DATE MON 10/13/25 TUE 10/14/25 WED 10/15/25 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 89 78 88 78 88 TEMP 78 79 85 89 88 86 83 80 79 79 84 88 87 85 83 80 79 79 84 88 87 DEWPT 78 78 77 77 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 100 97 77 68 72 77 85 94 97 97 82 72 75 80 85 94 97 97 82 72 75 WIND DIR E E E E E E E E E E E SE SE SE SE E E E E E E WIND SPD 10 12 13 14 13 14 12 14 11 16 17 17 14 16 16 14 12 16 18 18 18 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 B2 B2 B2 B2 POP 12HR 30 30 40 40 50 QPF 12HR 0.17 0.19 0.27 0.23 0.49 RAIN SHWRS C C C C C C C C C C C C C C C C C C C C C TSTMS S S S S S S S S HEAT INDEX 84 95102101 98 93 88 95101100 97 92 87 95101100 MAX HEAT 95 102 100 91 95 101 99 91 95 101 DATE THU 10/16/25 FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 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 79 88 78 89 TEMP 83 79 84 87 83 79 84 87 83 80 84 87 83 78 85 88 DEWPT 79 79 79 79 79 79 79 79 80 79 79 79 80 78 79 79 PWIND DIR E SE E E E E E E WIND CHAR BZ GN GN GN GN GN GN GN AVG CLOUDS B2 B2 B1 B1 B1 B1 B1 SC B1 B1 B1 SC B1 B1 B1 B1 POP 12HR 50 50 30 20 20 20 20 20 RAIN SHWRS C C C C C S S S S S S S S S S S TSTMS S S S S S S S $$ MPZ003-130600- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 400 AM CHST MON OCT 13 2025 DATE MON 10/13/25 TUE 10/14/25 WED 10/15/25 CHST3HRLY 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MAX/MIN 89 78 88 78 88 TEMP 78 79 84 89 88 86 83 80 78 79 84 88 87 85 82 80 78 79 84 88 87 DEWPT 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 RH 100 97 82 70 72 77 85 94100 97 82 72 75 80 88 94100 97 82 72 75 WIND DIR E E E E E E E E E E E SE SE SE SE E E E E E E WIND SPD 10 12 13 13 14 14 12 13 11 14 17 16 14 16 14 14 12 14 18 18 18 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 B2 B2 B2 B2 POP 12HR 30 30 40 40 50 QPF 12HR 0.11 0.25 0.25 0.22 0.45 RAIN SHWRS C C C C C C C C C C C C C C C C C C C C C TSTMS S S S S S S S S HEAT INDEX 95102101 98 93 87 95101100 97 92 86 95101100 MAX HEAT 95 102 100 91 95 101 99 90 95 101 DATE THU 10/16/25 FRI 10/17/25 SAT 10/18/25 SUN 10/19/25 CHST6HRLY 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MIN/MAX 78 88 78 88 79 88 78 89 TEMP 82 78 84 87 82 78 84 87 83 80 84 87 82 78 84 88 DEWPT 79 78 79 79 79 78 79 79 80 79 79 79 80 78 79 79 PWIND DIR E SE E E E E E E WIND CHAR BZ GN GN GN GN GN GN GN AVG CLOUDS B2 B2 B1 B1 B1 B1 B1 SC B1 B1 SC SC B1 B1 B1 B1 POP 12HR 50 50 30 20 20 20 20 20 RAIN SHWRS C C C C C S S S S S S S S S S S TSTMS S S S S S S S $$