Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
899 FOMY50 PGUM 011646 PFMGUM Point Forecast Matrices National Weather Service Tiyan GU 246 AM ChST Fri Oct 2 2026 GUZ001-020600- Guam International Airport-Tiyan GU 13.48N 144.79E Elev. 248 ft 246 AM ChST Fri Oct 2 2026 Date Fri 10/02/26 Sat 10/03/26 Sun 10/04/26 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 84 76 82 76 87 Temp 79 79 82 84 83 82 80 78 76 77 80 82 81 80 79 77 76 77 83 87 86 Dewpt 78 79 79 79 79 79 79 78 76 77 79 79 79 79 79 77 76 77 79 79 79 RH 97100 91 85 88 91 97100100100 97 91 94 97100100100100 88 77 80 Wind dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW Wind spd 32 33 34 35 35 36 35 35 33 33 33 33 33 31 31 31 29 29 29 29 28 Wind gust 44 46 47 47 48 46 47 44 43 43 43 43 41 40 40 39 Clouds OV OV OV OV OV B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 70 70 40 40 30 QPF 12hr 1.37 0.58 0.44 0.33 0.22 Rain shwrs L L L L L 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 S S Heat index 91 95 95 92 86 85 92 91 89 93101100 Max heat 85 91 95 94 85 92 91 93 101 High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Wind Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Date Mon 10/05/26 Tue 10/06/26 Wed 10/07/26 Thu 10/08/26 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 87 78 88 79 85 82 85 Temp 82 79 83 86 82 79 84 87 83 80 83 85 84 83 84 85 Dewpt 79 79 79 79 79 79 79 79 79 79 79 79 79 79 78 78 PWind dir SW SW SW SW SW SW W SW Wind char WY WY WY WY BZ GN GN LT Avg clouds B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 PoP 12hr 30 30 40 50 50 50 50 40 Rain shwrs C C C C C C C C C C C C C C C C Tstms S S C C C C C S S S S S S S $$ MPZ001-020600- Rota International Airport-Sinapalu MP 14.17N 145.23E Elev. 592 ft 246 AM ChST Fri Oct 2 2026 Date Fri 10/02/26 Sat 10/03/26 Sun 10/04/26 ChST3hrly 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 Max/Min 84 76 82 76 87 Temp 79 79 82 84 83 82 80 78 76 77 80 82 81 80 79 77 76 77 83 87 86 Dewpt 79 79 79 79 79 79 79 78 76 77 79 79 79 80 79 77 76 77 79 79 79 RH 100100 91 85 88 91 97100100100 97 91 94100100100100100 88 77 80 Wind dir W SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW Wind spd 34 36 37 37 37 37 37 37 36 35 35 35 34 33 32 32 31 31 31 31 29 Wind gust 48 50 50 50 50 49 49 48 47 47 46 46 43 42 41 41 41 41 40 Clouds OV OV OV OV OV B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 70 60 50 30 30 QPF 12hr 0.87 0.82 0.38 0.24 0.19 Rain shwrs L L L L L C C C C C C C C C C C C S S S S Tstms S C C C C S S S S S S S S S S S S S S S S Heat index 91 95 94 92 86 85 92 92 90 94101101 Max heat 85 91 95 94 85 92 91 94 101 High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Wind Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Date Mon 10/05/26 Tue 10/06/26 Wed 10/07/26 Thu 10/08/26 ChST6hrly 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Min/Max 78 87 78 88 79 84 83 84 Temp 82 79 83 86 82 79 84 87 83 80 82 84 84 84 84 84 Dewpt 80 79 79 79 79 79 79 79 79 79 79 79 79 79 78 78 PWind dir SW SW SW SW SW SW W SW Wind char WY WY WY WY BZ GN LT LT Avg clouds B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 PoP 12hr 30 30 30 30 40 50 50 40 Rain shwrs C C C C C C C C C C C C C C C C Tstms S S S S S C C C S S S S S S S $$ MPZ002-020600- Tinian-San Jose MP 14.97N 145.63E Elev. 74 ft 246 AM ChST Fri Oct 2 2026 Date Fri 10/02/26 Sat 10/03/26 Sun 10/04/26 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 84 76 82 76 87 Temp 79 79 82 84 83 82 80 78 76 77 80 82 81 80 79 77 76 77 83 87 86 Dewpt 78 79 79 79 78 79 79 78 76 77 80 80 80 80 79 77 76 77 80 80 80 RH 97100 91 85 85 91 97100100100100 94 97100100100100100 91 80 82 Wind dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW Wind spd 40 42 42 42 41 41 41 40 40 39 37 37 36 35 33 33 32 32 33 32 32 Wind gust 55 56 56 55 55 54 54 52 51 50 49 48 46 43 43 43 42 43 42 Clouds OV OV OV OV OV OV OV OV OV OV OV OV OV B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 80 70 60 60 30 QPF 12hr 1.44 0.88 0.72 0.41 0.19 Rain shwrs O L L L L L L L L L L L L C C C C S S S S Tstms C C C C C S S S S S S S S S S S S S S S S Heat index 91 95 94 91 86 85 92 92 90 94102101 Max heat 85 91 95 93 85 92 91 94 102 Coast Flood A A 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 A A A A A A A High Surf Y Y Y Y Y Y Y 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 W W Date Mon 10/05/26 Tue 10/06/26 Wed 10/07/26 Thu 10/08/26 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 87 78 88 79 86 82 87 Temp 82 79 83 86 82 79 84 87 83 80 83 85 84 83 85 86 Dewpt 80 79 79 79 79 79 79 79 79 79 79 79 79 78 78 78 PWind dir SW SW SW SW SW SW W SW Wind char WY WY WY WY GN GN LT LT Avg clouds B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B1 B1 B1 B1 PoP 12hr 30 30 30 30 40 40 40 30 Rain shwrs C C 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 $$ MPZ003-020600- Saipan International Airport-Obyan MP 15.11N 145.72E Elev. 215 ft 246 AM ChST Fri Oct 2 2026 Date Fri 10/02/26 Sat 10/03/26 Sun 10/04/26 ChST3hrly 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 Max/Min 84 76 82 76 87 Temp 79 79 82 84 83 82 80 78 76 77 80 82 81 80 79 77 76 77 83 87 86 Dewpt 78 79 79 79 78 79 79 78 76 77 80 80 80 80 79 77 76 77 80 80 80 RH 97100 91 85 85 91 97100100100100 94 97100100100100100 91 80 82 Wind dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW Wind spd 41 42 43 42 42 42 41 41 41 39 39 37 36 35 33 33 33 33 33 32 32 Wind gust 56 57 56 56 55 55 54 54 51 51 50 48 47 44 43 43 43 43 42 42 Clouds OV OV OV OV OV OV OV OV OV OV OV OV OV B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 80 80 70 70 30 QPF 12hr 1.80 1.34 1.31 0.43 0.17 Rain shwrs O O O O O L L L L L L L L C C C C S S S S Tstms C C C C C S S S S S S S S S S S S S S S S Heat index 91 95 94 91 86 85 92 92 90 94102101 Max heat 85 91 95 93 85 92 91 94 102 Coast Flood A A A A A A A A A A A A A A A A A A A A A Flood A A A A A A A A A A A A A A A A A A A A A High Surf Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Trop Storm W W W W W W W W W W W W W W W W W W W W W Date Mon 10/05/26 Tue 10/06/26 Wed 10/07/26 Thu 10/08/26 ChST6hrly 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Min/Max 78 87 78 88 79 86 82 87 Temp 82 79 83 86 82 79 84 87 83 80 83 85 84 82 85 86 Dewpt 80 79 79 79 79 79 79 79 79 79 79 79 79 78 78 78 PWind dir SW SW SW SW SW SW W S Wind char WY WY WY WY GN LT LT LT Avg clouds B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B1 B1 B1 B1 PoP 12hr 30 30 30 30 40 40 40 30 Rain shwrs C C C C C S C C C C C C C C C S Tstms S S S S S S S S S S S S S S S S $$