Hurricane Iona (2025)

Hurricane Iona reached Category 4 in the Eastern Pacific between July 26, 2025 and August 1, 2025, with a lowest pressure of 956 mb.

Track and intensity

The whole track of Hurricane Iona, colored by strength, with the other storms of the 2025 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.

Open the live map with storms, cones and warnings

The storm

Basin: Eastern Pacific
Dates: July 26, 2025 to August 1, 2025
Peak strength: Category 4, 115 kt (132 mph)
Lowest pressure: 956 mb (28.23 inHg)
Landfall: No; closest approach 885 km (550 mi)
Accumulated cyclone energy: 8.8
Tropical-storm-force wind reached: 80 nmi (148 km, 92 mi) from the center at its widest
Hurricane-force wind reached: 20 nmi (37 km, 23 mi) from the center at its widest
Eyewall radius at its peak: 5 nmi (9 km, 6 mi)
Overall size: 210 nmi (389 km, 242 mi) to the outermost closed isobar
Peak gust in the best track: 135 kt (155 mph)
Fastest the center moved: 21 kt (24 mph)
Identifier: CP012025

Deaths and damage

No source this site reads carries a casualty or damage figure for this storm.

Track

Time (UTC)	Position	Wind	Pressure	Status
Jul 26, 00:00	10.5N 140.9W	25 kt	1009 mb	Low
Jul 26, 06:00	10.7N 141.6W	25 kt	1009 mb	Low
Jul 26, 12:00	10.8N 142.3W	25 kt	1009 mb	Low
Jul 26, 18:00	10.9N 143.1W	25 kt	1009 mb	Low
Jul 27, 00:00	10.9N 144.1W	25 kt	1008 mb	Tropical depression
Jul 27, 06:00	10.9N 145.1W	30 kt	1007 mb	Tropical depression
Jul 27, 12:00	10.9N 146.0W	30 kt	1007 mb	Tropical depression
Jul 27, 18:00	10.9N 146.9W	35 kt	1006 mb	Tropical storm
Jul 28, 00:00	10.9N 147.8W	40 kt	1005 mb	Tropical storm
Jul 28, 06:00	10.8N 148.8W	45 kt	1004 mb	Tropical storm
Jul 28, 12:00	10.7N 149.7W	55 kt	1001 mb	Tropical storm
Jul 28, 18:00	10.7N 150.6W	65 kt	996 mb	Hurricane
Jul 29, 00:00	10.8N 151.6W	75 kt	988 mb	Hurricane
Jul 29, 06:00	10.8N 152.6W	100 kt	970 mb	Hurricane
Jul 29, 12:00	10.8N 153.7W	115 kt	956 mb	Hurricane
Jul 29, 18:00	10.9N 155.0W	110 kt	960 mb	Hurricane
Jul 30, 00:00	11.0N 156.4W	100 kt	968 mb	Hurricane
Jul 30, 06:00	11.2N 157.9W	90 kt	976 mb	Hurricane
Jul 30, 12:00	11.4N 159.6W	70 kt	991 mb	Hurricane
Jul 30, 18:00	11.6N 161.7W	55 kt	1000 mb	Tropical storm
Jul 31, 00:00	11.8N 163.8W	45 kt	1002 mb	Tropical storm
Jul 31, 06:00	12.1N 165.9W	45 kt	1002 mb	Tropical storm
Jul 31, 12:00	12.5N 167.9W	40 kt	1004 mb	Tropical storm
Jul 31, 18:00	13.0N 169.8W	40 kt	1004 mb	Tropical storm
Aug 1, 00:00	13.4N 171.7W	35 kt	1006 mb	Tropical storm
Aug 1, 06:00	13.6N 173.6W	30 kt	1007 mb	Tropical depression
Aug 1, 12:00	13.8N 175.5W	30 kt	1007 mb	Tropical depression

Other Eastern Pacific storms of 2025

What this means

A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.

Sources

Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.

The National Hurricane Center has published no tropical cyclone report for this storm.

Every advisory and discussion NHC issued while it was live