Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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946 FOMY50 PGUM 180520 PFMGUM POINT FORECAST MATRICES NATIONAL WEATHER SERVICE TIYAN GU 310 PM CHST TUE NOV 18 2025 GUZ001-181800- GUAM INTERNATIONAL AIRPORT-TIYAN GU 13.48N 144.79E ELEV. 248 FT 310 PM CHST TUE NOV 18 2025 DATE TUE 11/18/25 WED 11/19/25 THU 11/20/25 FRI 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 78 78 77 77 77 77 77 77 78 78 78 78 78 78 77 77 77 78 79 79 79 RH 75 80 82 91 94 94 80 70 75 80 85 94 97 97 80 70 72 80 88 97100 WIND DIR E E E E E E E E E E E E E E E E E E E E E WIND SPD 12 13 10 9 9 12 16 16 16 16 13 12 10 16 18 18 18 18 16 12 11 CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 20 10 20 20 20 QPF 12HR 0.06 0.02 0.03 0.04 0.06 RAIN SHWRS S S S S S S S S S S S S S S S S S S S S S HEAT INDEX 100 97 91 86 83 93100100 97 92 87 94100 99 97 93 88 MAX HEAT 100 99 89 93 100 99 91 94 100 99 91 DATE 11/21/25 SAT 11/22/25 SUN 11/23/25 MON 11/24/25 TUE 11/25/25 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 78 87 79 88 77 89 77 89 TEMP 83 86 82 79 83 86 83 79 84 87 82 78 84 88 83 78 84 88 DEWPT 78 78 78 78 78 78 78 78 77 77 78 78 78 78 79 78 78 78 PWIND DIR E E E E E E E E E WIND CHAR BZ BZ BZ BZ BZ GN BZ GN GN AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC POP 12HR 30 40 40 30 30 20 20 20 20 RAIN SHWRS C C C C C C C C C S S S S S S S S S TSTMS S S S S S S S $$ MPZ001-181800- ROTA INTERNATIONAL AIRPORT-SINAPALU MP 14.17N 145.23E ELEV. 592 FT 310 PM CHST TUE NOV 18 2025 DATE TUE 11/18/25 WED 11/19/25 THU 11/20/25 FRI CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 76 86 76 86 76 TEMP 85 83 81 78 77 77 82 86 85 83 81 78 77 77 82 86 85 83 81 78 77 DEWPT 78 77 77 77 77 77 77 77 78 78 78 78 78 78 78 78 78 78 78 79 79 RH 80 82 88 97100100 85 75 80 85 91100103103 88 77 80 85 91103107 WIND DIR E E E E E E E E E E E E E E E E E E E E E WIND SPD 13 16 14 12 11 13 17 17 17 17 16 13 12 16 19 18 18 18 16 12 12 CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 20 10 20 20 20 QPF 12HR 0.03 0.02 0.06 0.05 0.10 RAIN SHWRS S S S S S S S S S S S S S S S S S S S S S HEAT INDEX 97 93 87 90 97 97 93 88 91 98 97 93 89 MAX HEAT 97 96 85 90 97 96 85 91 98 96 85 DATE 11/21/25 SAT 11/22/25 SUN 11/23/25 MON 11/24/25 TUE 11/25/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 85 76 85 79 86 77 87 77 87 TEMP 81 84 80 77 81 84 82 79 83 85 81 78 83 87 82 78 83 87 DEWPT 79 78 78 78 78 78 78 78 77 77 78 78 78 78 79 78 78 78 PWIND DIR E E E E E E E E E WIND CHAR BZ BZ BZ BZ BZ BZ BZ BZ GN AVG CLOUDS B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 30 30 30 30 20 20 20 20 20 RAIN SHWRS C C C C C C C S S S S S S S S S S S TSTMS S S S S S $$ MPZ002-181800- TINIAN-SAN JOSE MP 14.97N 145.63E ELEV. 74 FT 310 PM CHST TUE NOV 18 2025 DATE TUE 11/18/25 WED 11/19/25 THU 11/20/25 FRI 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 88 78 TEMP 86 85 82 80 79 79 84 87 87 85 82 80 79 79 84 88 87 85 83 80 79 DEWPT 78 77 76 76 77 77 77 77 78 78 77 77 78 78 77 78 78 78 79 79 79 RH 77 77 82 88 94 94 80 72 75 80 85 91 97 97 80 72 75 80 88 97100 WIND DIR E E E E E E E E E E E E E E E E E E E E E WIND SPD 14 16 13 12 11 13 17 17 16 18 14 13 12 16 19 18 18 18 16 13 12 CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 20 10 20 20 20 QPF 12HR 0.02 0.02 0.06 0.05 0.18 RAIN SHWRS S S S S S S S S S S S S S S S S S S S S S HEAT INDEX 99 95 90 85 93 99 99 96 91 86 94101100 97 93 88 MAX HEAT 99 98 88 93 99 98 89 94 101 99 91 DATE 11/21/25 SAT 11/22/25 SUN 11/23/25 MON 11/24/25 TUE 11/25/25 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 78 87 78 88 76 89 76 89 TEMP 83 86 82 79 83 86 82 78 84 87 82 77 84 88 82 77 84 88 DEWPT 79 78 78 78 78 78 78 77 77 77 77 78 78 78 78 78 77 78 PWIND DIR E E E E E E E E E WIND CHAR BZ BZ BZ BZ BZ BZ BZ BZ GN AVG CLOUDS B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 30 30 30 30 20 20 20 20 20 RAIN SHWRS C C C C C C C S S S S S S S S S S S TSTMS S S S S S $$ MPZ003-181800- SAIPAN INTERNATIONAL AIRPORT-OBYAN MP 15.11N 145.72E ELEV. 215 FT 310 PM CHST TUE NOV 18 2025 DATE TUE 11/18/25 WED 11/19/25 THU 11/20/25 FRI CHST3HRLY 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MIN/MAX 78 88 78 88 78 TEMP 87 85 83 80 79 79 84 88 87 85 83 80 79 79 84 88 87 85 83 80 79 DEWPT 78 77 76 76 77 77 77 77 78 78 77 77 78 78 78 78 78 78 79 79 79 RH 75 77 80 88 94 94 80 70 75 80 82 91 97 97 82 72 75 80 88 97100 WIND DIR E E E E E E E E E E E E E E E E E E E E E WIND SPD 14 16 13 12 11 13 17 17 16 17 16 13 12 16 19 18 18 18 16 13 12 CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 20 10 20 20 20 QPF 12HR 0.03 0.03 0.07 0.06 0.19 RAIN SHWRS S S S S S S S S S S S S S S S S S S S S S HEAT INDEX 100 96 91 86 83 94100100 97 91 87 83 94101101 97 93 88 MAX HEAT 100 99 89 94 100 99 90 94 101 100 91 DATE 11/21/25 SAT 11/22/25 SUN 11/23/25 MON 11/24/25 TUE 11/25/25 CHST6HRLY 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 MAX/MIN 87 78 87 78 88 76 89 76 89 TEMP 83 86 82 79 83 86 82 78 84 87 82 77 84 88 82 77 84 88 DEWPT 79 78 78 78 78 78 78 77 77 77 77 78 78 78 78 78 78 78 PWIND DIR E E E E E E E E E WIND CHAR BZ BZ BZ BZ BZ BZ BZ BZ GN AVG CLOUDS B1 B1 B1 SC B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 30 30 30 30 20 20 20 20 20 RAIN SHWRS C C C C C C C S S S S S S S S S S S TSTMS S S S S S $$