2021 Western Pacific typhoon season
Typhoon Chanthu 2021
Recorded track and intensity from Sep 5, 2021 to Sep 20, 2021
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178 mph
Sep 10, 2021 during the tropical stage
Full archive record, including non-tropical stages if present
Along the recorded center positions
STORM HISTORY
Track and intensity summary
Chanthu is listed in the Western Pacific basin for the 2021 season. Its archived track begins on Sep 5, 2021, 06:00 AM UTC at 12.4°N, 140.5°E. US-agency wind is not available for this first observation. These dates describe the available observations, which may include stages before and after the tropical cyclone phase.
The first Category 5 observation appears on Sep 8, 2021, 06:00 AM UTC. The highest recorded tropical-stage one-minute sustained wind is 178 mph, first recorded on Sep 10, 2021, 06:00 PM UTC at 19.5°N, 122.3°E. The minimum recorded tropical-stage central pressure is 902 hPa on Sep 10, 2021, 06:00 PM UTC.
The full record spans 354 hours and approximately 3,690 mi along the recorded center positions. The last recorded position is 31.8°N, 140.7°E on Sep 20, 2021, 12:00 AM UTC. The final tropical-stage observation is earlier, on Sep 18, 2021, 03:00 AM UTC.
Further reading
QUICK ANSWERS
Chanthu in brief
What was Typhoon Chanthu's highest wind speed?
178 mph, the highest one-minute sustained wind in its tropical stage, recorded on Sep 10, 2021, 06:00 PM UTC.
What category was Typhoon Chanthu?
Category 5 at its peak on the Saffir–Simpson one-minute wind scale, first reaching Category 5 on Sep 8, 2021, 06:00 AM UTC. Other agencies classify storms differently.
What was Typhoon Chanthu's lowest pressure?
902 mb, the minimum central pressure recorded during its tropical stage, on Sep 10, 2021, 06:00 PM UTC.
When did Typhoon Chanthu occur?
The archived track runs from Sep 5, 2021, 06:00 AM UTC to Sep 20, 2021, 12:00 AM UTC, with the tropical stage from Sep 5, 2021, 06:00 AM UTC to Sep 18, 2021, 03:00 AM UTC.
Where did Typhoon Chanthu form?
In the Western Pacific basin, in the 2021 season. Its first archived position is 12.4°N, 140.5°E on Sep 5, 2021, 06:00 AM UTC.
Did Typhoon Chanthu make landfall?
The archive places its center over land at 1 recorded position; the strongest is 38 mph on Sep 17, 2021, 03:00 PM UTC. Positions are six-hourly, so this is not a landfall chronology.
METHODOLOGY
Data sources and limitations
The map and summary are generated from NOAA's IBTrACS v04r01 archive. Wind and category use US-agency records; minimum pressure is calculated during the tropical stage, with the archive's pressure source retained. Category 5 refers to the Saffir–Simpson one-minute wind scale; local agencies may use different classifications. Coastlines use Natural Earth's 1:10m land data.
Track distance adds great-circle distances between consecutive observations, excluding gaps over 12 hours. This track has no gaps over 12 hours. The line shows the storm's center, not its size, rainfall or flood extent. Converted wind speeds are rounded to the nearest whole unit.
Archive retrieved
NOAA IBTrACS archive and Field documentation
Sources & methodology