Marine/aviation Tropical Cyclone Advisory
042 WTPZ24 KNHC 250842 TCMEP4 TROPICAL STORM ISELLE FORECAST/ADVISORY NUMBER 8 NWS NATIONAL HURRICANE CENTER MIAMI FL EP092026 0900 UTC TUE AUG 25 2026 TROPICAL STORM CENTER LOCATED NEAR 20.7N 119.9W AT 25/0900Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 305 DEGREES AT 13 KT ESTIMATED MINIMUM CENTRAL PRESSURE 988 MB MAX SUSTAINED WINDS 60 KT WITH GUSTS TO 75 KT. 50 KT....... 80NE 40SE 0SW 50NW. 34 KT.......140NE 180SE 60SW 90NW. 4 M SEAS....210NE 210SE 105SW 180NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 20.7N 119.9W AT 25/0900Z AT 25/0600Z CENTER WAS LOCATED NEAR 20.4N 119.6W FORECAST VALID 25/1800Z 21.3N 121.4W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 60NE 30SE 0SW 40NW. 34 KT...140NE 160SE 50SW 100NW. FORECAST VALID 26/0600Z 21.9N 123.2W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 30NE 0SE 0SW 20NW. 34 KT...130NE 120SE 40SW 90NW. FORECAST VALID 26/1800Z 22.7N 124.9W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 90NE 60SE 30SW 70NW. FORECAST VALID 27/0600Z 23.4N 126.8W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 50NE 0SE 0SW 40NW. FORECAST VALID 27/1800Z 23.9N 128.8W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 28/0600Z 24.3N 130.7W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM ON DAY 4 AND 125 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 29/0600Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.7N 119.9W NEXT ADVISORY AT 25/1500Z