Typhoon Irma path, 1971

What the record says

Irma was a typhoon in the Western North Pacific basin that lasted about 10 days, from 7 November 1971 to 17 November 1971. Its peak was Category 5 (155 kt) on 11 November 1971, with a 1-minute sustained wind of 155 kt (178 mph, 287 km/h). Its lowest recorded pressure was 885 hPa.

• Category 5peak intensity
• 155 ktpeak wind (178 mph)
• 885 hPalowest pressure
• 10 dayslifetime

Source of the peak wind: US Joint Typhoon Warning Center (western Pacific).

It has its own page because it reached category 5 or stronger.

This page gives the official record's figures. It does not describe the human cost of the storm, which is far larger than any wind speed or pressure here.

Where it came ashore

The record shows no landfall: the storm stayed at sea.

Countries it came within 50 km of

Strongest effect first.

• Federated States of Micronesia
• Japan

How to read this track

The line joins the storm's six-hourly positions with straight lines, coloured by its intensity at each point, so it shows how the storm strengthened and weakened. The real path curved between the positions. A dashed grey stretch means the storm had become post-tropical. Records before the satellite era (about the 1960s) are estimates.

Source: NOAA NCEI IBTrACS, public domain. See data sources and caveats.