Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
124 FOMY50 PGUM 140751 PFMGUM Point Forecast Matrices National Weather Service Tiyan GU 551 PM ChST Tue Apr 14 2026 GUZ001-141800- Guam International Airport-Tiyan GU 13.48N 144.79E Elev. 248 ft 551 PM ChST Tue Apr 14 2026 Date Tue 04/14/26 Wed 04/15/26 Thu 04/16/26 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 79 84 79 85 77 Temp 82 81 80 79 80 82 84 83 83 81 80 79 80 83 85 84 83 81 79 77 Dewpt 78 78 77 77 77 78 77 77 77 78 77 77 77 78 78 77 77 77 76 76 RH 88 91 91 94 91 88 80 82 82 91 91 94 91 85 80 80 82 88 91 97 Wind dir W W W W W W W W W SW SW SW SW SW SW SW SW SW SW W Wind spd 41 40 39 36 35 37 40 39 35 29 27 26 27 29 27 26 21 19 17 16 Wind gust 54 51 50 48 47 50 57 54 51 49 43 40 37 31 Clouds OV OV OV OV B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 100 100 40 30 20 QPF 12hr 1.58 0.64 0.40 0.25 0.08 Rain shwrs C C C C C C C C C C C C C C C S S S S S Tstms S S S S S S S S S S S S Heat index 90 89 85 84 85 90 94 93 91 89 87 84 85 91 96 95 92 88 Max heat 91 88 90 94 93 89 91 96 94 85 Coast Flood W W W W W W W W W W W W Flood A A A A A High Surf W W W W W W W W W W W W W W W W Trop Storm W W W W W W W W W W W W W W W W W W W W Typhoon A A A A A A A A A A A A A A A A A A A A Date 04/17/26 Sat 04/18/26 Sun 04/19/26 Mon 04/20/26 Tue 04/21/26 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 86 78 87 78 89 76 88 76 89 Temp 82 85 82 78 83 86 82 79 84 88 82 77 83 87 81 77 84 88 Dewpt 77 77 77 75 75 75 76 75 75 75 75 74 74 73 74 74 73 73 PWind dir W SW SW SW SW S SE E E Wind char BZ BZ GN GN LT LT LT LT LT Avg clouds B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 20 20 20 20 20 10 10 Rain shwrs S S S S S S S S S S S S S S S S S S $$ MPZ001-141800- Rota International Airport-Sinapalu MP 14.17N 145.23E Elev. 592 ft 551 PM ChST Tue Apr 14 2026 Date Tue 04/14/26 Wed 04/15/26 Thu 04/16/26 Fri ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 79 84 79 85 78 Temp 82 81 80 79 80 82 84 83 83 81 80 79 80 83 85 84 83 81 80 79 Dewpt 78 78 77 77 77 78 77 77 77 77 77 77 77 77 77 77 77 77 77 76 RH 88 91 91 94 91 88 80 82 82 88 91 94 91 82 77 80 82 88 91 91 Wind dir NW W W W W W W W W SW SW SW SW SW SW SW SW SW SW SW Wind spd 55 54 51 48 46 43 41 39 36 35 32 31 32 33 31 28 26 23 21 20 Wind gust 71 70 66 63 59 56 54 50 48 56 54 50 47 33 Clouds OV OV OV OV OV OV OV OV B2 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 100 100 60 30 30 QPF 12hr 3.40 2.03 0.42 0.19 0.09 Rain shwrs L L L C C C C C C C C C C C C C S S S S Tstms S S S S S S S S S S S S Heat index 91 89 86 84 85 90 94 93 91 89 87 84 85 91 95 95 92 89 85 Max heat 91 88 90 94 93 88 91 95 94 88 Coast Flood W W W W W W W W W W W W Flood A A A A A High Surf W W W W W W W W W W W W W W W W Typhoon W W W W W W W W W W W W W W W W W W W W Date 04/17/26 Sat 04/18/26 Sun 04/19/26 Mon 04/20/26 Tue 04/21/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 86 79 87 79 85 77 85 77 87 Temp 83 85 82 79 83 86 82 79 83 84 81 78 82 84 81 78 83 87 Dewpt 77 77 77 76 76 76 76 75 75 75 75 74 74 73 74 74 73 73 PWind dir SW SW SW SW SW S SE E E Wind char BZ BZ GN GN LT LT LT LT LT Avg clouds B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 20 20 20 20 20 10 10 Rain shwrs S S S S S S S S S S S S S S S S S S $$ MPZ002-141800- Tinian-San Jose MP 14.97N 145.63E Elev. 74 ft 551 PM ChST Tue Apr 14 2026 Date Tue 04/14/26 Wed 04/15/26 Thu 04/16/26 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 79 84 79 85 76 Temp 82 81 80 79 80 82 84 83 83 81 80 79 80 83 85 84 83 80 78 77 Dewpt 79 79 79 78 78 78 78 78 78 78 77 77 78 78 78 78 78 78 77 76 RH 91 94 97 97 94 88 82 85 85 91 91 94 94 85 80 82 85 94 97 97 Wind dir N NW NW W W W W SW SW SW SW SW SW SW SW SW SW SW SW SW Wind spd 79 92 89 73 65 59 55 50 46 42 40 37 37 37 35 33 31 28 26 24 Wind gust 103120117 96 85 77 71 65 59 55 51 49 55 51 49 35 Clouds OV OV OV OV OV OV OV OV OV B2 B1 B1 B2 B2 B2 B1 B1 B1 B1 B1 PoP 12hr 100 100 100 30 30 QPF 12hr 4.71 6.23 1.65 0.56 0.19 Rain D D D D Rain shwrs D L L L C C C C C C C C C S S S Tstms C C C C S S S S S S S S S S S S Heat index 92 90 86 85 85 91 94 94 92 89 87 84 85 92 96 95 92 88 Max heat 92 89 91 94 93 89 92 96 94 85 Coast Flood W W W W W W W W W W W W Flood A A A A A High Surf W W W W W W W W W W W W W W W W Typhoon W W W W W W W W W W W W W W W W W W W W Date 04/17/26 Sat 04/18/26 Sun 04/19/26 Mon 04/20/26 Tue 04/21/26 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 86 77 87 79 87 76 87 76 89 Temp 82 85 81 78 83 86 83 79 84 86 81 77 83 86 81 77 84 88 Dewpt 77 77 77 76 76 76 76 76 75 75 75 74 74 74 74 74 73 73 PWind dir SW SW SW SW SW SW SE E E Wind char WY BZ GN GN LT LT LT LT LT Avg clouds B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 20 20 20 20 20 10 10 Rain shwrs S S S S S S S S S S S S S S S S S S $$ MPZ003-141800- Saipan International Airport-Obyan MP 15.11N 145.72E Elev. 215 ft 551 PM ChST Tue Apr 14 2026 Date Tue 04/14/26 Wed 04/15/26 Thu 04/16/26 Fri ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 79 84 79 85 76 Temp 82 81 80 79 80 82 84 83 83 81 80 79 80 83 85 84 82 80 78 77 Dewpt 79 79 79 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 77 76 RH 91 94 97 97 94 88 82 85 85 91 94 97 94 85 80 82 88 94 97 97 Wind dir N N NW W W W SW SW SW SW SW SW SW SW SW SW SW SW SW SW Wind spd 83112124 98 74 64 58 54 49 44 42 39 39 39 36 34 32 29 27 26 Wind gust 110143143128 97 83 77 70 63 58 55 51 50 54 50 36 Clouds OV OV OV OV OV OV OV OV OV B2 B1 B1 B2 B2 B2 B1 B1 B1 B1 B1 PoP 12hr 100 100 100 30 30 QPF 12hr 3.93 5.39 2.08 0.74 0.24 Rain D D D D D Rain shwrs D L L C C C C C C C C C S S C Tstms C C C C C S S S S S S S S S S S Heat index 92 90 86 85 85 91 94 94 92 90 87 84 85 92 96 95 92 87 Max heat 92 89 91 94 93 89 92 96 94 84 Coast Flood W W W W W W W W W W W W Flood A A A A A High Surf W W W W W W W W W W W W W W W W Typhoon W W W W W W W W W W W W W W W W W W W W Date 04/17/26 Sat 04/18/26 Sun 04/19/26 Mon 04/20/26 Tue 04/21/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 86 77 87 79 87 76 87 76 89 Temp 82 85 81 77 83 86 83 79 84 86 81 77 83 86 81 77 84 88 Dewpt 78 78 77 76 77 76 76 76 76 75 75 74 74 74 74 74 73 73 PWind dir SW SW SW SW SW SW SE E E Wind char WY BZ GN GN LT LT LT LT LT Avg clouds B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 20 20 20 20 20 20 10 10 Rain shwrs C S S S S S S S S S S S S S S S S S $$