Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
919 FOMY50 PGUM 022251 PFMGUM Point Forecast Matrices National Weather Service Tiyan GU 851 AM ChST Sat Oct 3 2026 GUZ001-030600- Guam International Airport-Tiyan GU 13.48N 144.79E Elev. 248 ft 851 AM ChST Sat Oct 3 2026 Date Sat 10/03/26 Sun 10/04/26 Mon 10/05/26 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 82 76 87 78 87 Temp 80 82 81 80 79 77 76 77 83 87 86 85 82 80 79 79 83 87 86 Dewpt 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 RH 97 91 94 97100107110107 88 77 80 82 91 97100100 88 77 80 Wind dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW Wind spd 27 26 25 23 19 19 17 19 21 21 19 17 14 14 13 16 19 20 19 Clouds B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 40 40 40 30 30 QPF 12hr 0.38 0.49 0.19 0.13 0.13 Rain shwrs C C C C C C C C C C C C C C C S S S S Tstms S S S S S S S S S S S S S S S Heat index 85 92 91 89 93101100 97 93 86 94100100 Max heat 85 92 91 93 101 99 91 94 100 Flood A A A A A A A A A A A A A A High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y Y Wind Y Y Y Y Y Y Date Tue 10/06/26 Wed 10/07/26 Thu 10/08/26 Fri 10/09/26 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 79 85 82 85 81 87 Temp 82 79 84 87 83 80 83 85 84 83 84 85 83 81 84 86 Dewpt 79 79 79 79 79 79 79 79 79 79 78 79 78 78 78 78 PWind dir SW SW SW SW W W W SW Wind char BZ BZ BZ GN GN GN LT LT Avg clouds B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 20 30 40 50 50 40 30 30 Rain shwrs S S C C C C C C C C C C C C C S Tstms S S S S S S S S S S S S S S S S $$ MPZ001-030600- Rota International Airport-Sinapalu MP 14.17N 145.23E Elev. 592 ft 851 AM ChST Sat Oct 3 2026 Date Sat 10/03/26 Sun 10/04/26 Mon 10/05/26 ChST3hrly 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 Max/Min 82 76 87 78 87 Temp 80 82 81 80 79 77 76 77 83 87 86 85 82 80 79 79 83 87 86 Dewpt 79 79 79 80 80 80 79 79 79 79 79 79 79 79 79 79 79 79 79 RH 97 91 94100103110110107 88 77 80 82 91 97100100 88 77 80 Wind dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW Wind spd 36 34 33 32 27 27 24 27 28 27 27 25 21 21 19 23 25 25 24 Wind gust 47 44 43 Clouds B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 50 50 30 30 30 QPF 12hr 0.52 0.38 0.16 0.10 0.12 Rain shwrs C C C C C C C C C C C C C C C S S S S Tstms S S S S S S S S S S S S S S S Heat index 85 92 91 89 93101100 97 93 86 95101100 Max heat 85 92 91 93 101 99 91 95 101 Flood A A A A A A A A A A A A A A High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y Y Wind Y Y Y Y Y Y Date Tue 10/06/26 Wed 10/07/26 Thu 10/08/26 Fri 10/09/26 ChST6hrly 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Min/Max 78 88 79 84 83 84 81 86 Temp 82 79 84 87 83 80 82 84 84 84 84 84 82 81 84 85 Dewpt 79 79 79 79 79 79 79 79 78 78 78 78 79 78 78 78 PWind dir SW SW SW SW W W W SW Wind char BZ BZ BZ GN GN LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 30 30 40 50 50 40 30 30 Rain shwrs C C C C C C C C C C C C C C C C Tstms S S S S S S S S S S S S S S S S $$ MPZ002-030600- Tinian-San Jose MP 14.97N 145.63E Elev. 74 ft 851 AM ChST Sat Oct 3 2026 Date Sat 10/03/26 Sun 10/04/26 Mon 10/05/26 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 82 76 87 78 87 Temp 80 82 81 80 79 77 76 77 83 87 86 85 82 80 79 79 83 87 86 Dewpt 79 80 79 80 80 80 80 80 79 80 80 80 80 80 79 79 79 79 79 RH 97 94 94100103110114110 88 80 82 85 94100100100 88 77 80 Wind dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW Wind spd 36 35 33 31 27 27 24 27 27 26 25 24 21 21 19 21 23 23 21 Wind gust 47 46 43 41 Clouds OV OV OV B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 70 70 30 30 30 QPF 12hr 1.07 0.53 0.15 0.14 0.15 Rain shwrs L L L C C C C C C C C C C C C S S S S Tstms C C C S S S S S S S S S S S S S S S S Heat index 85 92 92 90 94102101 98 93 87 95101100 Max heat 85 92 91 94 102 100 92 95 101 Coast Flood A A A A A A A A A A A A A A A A A A A Flood A A A A A A A A A A A A A A High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y Y Trop Storm W W W W W W W W W W W W W W W W W W W Date Tue 10/06/26 Wed 10/07/26 Thu 10/08/26 Fri 10/09/26 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 79 86 82 87 78 89 Temp 82 79 84 87 83 80 83 85 84 83 85 86 82 79 84 88 Dewpt 79 79 79 79 79 79 79 78 78 78 78 79 78 78 78 78 PWind dir SW SW SW SW W NW W SW Wind char BZ BZ BZ GN LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B2 B2 B2 B1 B2 B2 B1 B1 B1 B1 PoP 12hr 20 30 40 40 40 50 50 30 Rain shwrs S S C C C C C C C C C C C C C S Tstms S S S S S S S S S S S S S S S S $$ MPZ003-030600- Saipan International Airport-Obyan MP 15.11N 145.72E Elev. 215 ft 851 AM ChST Sat Oct 3 2026 Date Sat 10/03/26 Sun 10/04/26 Mon 10/05/26 ChST3hrly 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 Max/Min 82 76 87 78 87 Temp 80 82 81 80 79 77 76 77 83 87 86 85 82 80 79 79 83 87 86 Dewpt 79 80 80 80 80 80 80 80 80 80 80 80 80 80 79 79 79 79 79 RH 97 94 97100103110114110 91 80 82 85 94100100100 88 77 80 Wind dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW Wind spd 36 35 33 31 26 27 24 27 27 26 25 23 20 20 18 20 23 23 21 Wind gust 47 46 43 Clouds OV OV OV B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 70 70 40 30 30 QPF 12hr 0.78 0.60 0.20 0.15 0.14 Rain shwrs L L L C C C C C C C C C C C C S S S S Tstms C C C S S S S S S S S S S S S S S S S Heat index 85 92 92 90 94102101 98 93 87 95101100 Max heat 85 92 91 94 102 100 92 95 101 Coast Flood A A A A A A A A A A A A A A A A A A A Flood A A A A A A A A A A A A A A High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y Y Trop Storm W W W W W W W W W W W W W W W W W W W Date Tue 10/06/26 Wed 10/07/26 Thu 10/08/26 Fri 10/09/26 ChST6hrly 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Min/Max 78 88 79 86 82 87 78 89 Temp 82 79 84 87 83 80 83 85 84 82 85 86 82 79 84 88 Dewpt 79 79 79 79 79 79 79 78 78 78 78 79 78 78 78 78 PWind dir SW SW SW SW W NW W SW Wind char BZ BZ BZ GN LT LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 B2 B2 B1 B1 B1 B1 PoP 12hr 20 30 40 40 40 50 50 30 Rain shwrs S S C C C C C C C C C C C C C S Tstms S S S S S S S S S S S S S S S S $$