Typhoon Seth path, 1991

What the record says

Seth was a typhoon in the Western North Pacific basin that lasted about 18 days, from 28 October 1991 to 15 November 1991. Its peak was Category 4 (130 kt) on 3 November 1991, with a 1-minute sustained wind of 130 kt (150 mph, 241 km/h). Its lowest recorded pressure was 925 hPa.

• Category 4peak intensity
• 130 ktpeak wind (150 mph)
• 925 hPalowest pressure
• 18 dayslifetime

Source of the peak wind: US Joint Typhoon Warning Center (western Pacific). The regional forecast centre (RSMC Tokyo (Japan Meteorological Agency)) gave a peak of 100 kt on its own averaging convention (10-minute winds), so the two figures differ.

It has its own page because it reached category 4 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.

• Northern Mariana Islands
• Philippines
• Marshall Islands

US counties it came within 50 km of

• Northern Islands Municipality, Commonwealth of the Northern Mariana Islands
• Saipan Municipality, Commonwealth of the Northern Mariana Islands

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.