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WESTERN PACIFIC · 2021 SEASON

Typhoon Chanthu (2021)

Recorded track and intensity · 5 Sept 2021–20 Sept 2021

PEAK INTENSITYCategory 5
THE COMPLETE TRACKOpen in the explorer
CHANTHU: complete recorded track, 5 Sept 2021–20 Sept 2021Recorded track from 5 Sept 2021 to 20 Sept 2021. Colors show the recorded wind category. The highlighted position follows the replay controls.JAPANPHILIPPINES6 Sep, 00:00 UTC7 Sep, 00:00 UTC8 Sep, 00:00 UTC9 Sep, 00:00 UTC10 Sep, 00:00 UTC11 Sep, 00:00 UTC12 Sep, 00:00 UTC13 Sep, 00:00 UTC14 Sep, 00:00 UTC15 Sep, 00:00 UTC16 Sep, 00:00 UTC17 Sep, 00:00 UTC18 Sep, 00:00 UTC19 Sep, 00:00 UTC20 Sep, 00:00 UTCPeak · Category 55 SEP20 SEP

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DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5Post-tropical
All times UTC

Wind speed & pressure

10 Sep, 18:00 UTC
Wind speed 155 ktPressure 902 hPa
0900809601601020kthPa5 Sep10 Sep15 Sep20 Sep

Forward speed & ACE

10 Sep, 18:00 UTC
Forward speed 9 ktCumulative ACE 25.86 10⁴ kt²
001522.53045kt10⁴ kt²5 Sep10 Sep15 Sep20 Sep

Hover or tap either graph to follow the track. The slider controls both graphs. Each line uses its matching colored axis.

Forward speed measures the center’s motion. ACE accumulates squared one-minute winds at 00, 06, 12 and 18 UTC during tropical or subtropical stages at 34 kt or above. Missing observations make ACE partial. Missing measurements remain gaps.

Maximum sustained wind155 kt

178 mph / 287 km/h

Minimum recorded pressure902 hPa

10 Sept 2021 · tropical stage

Recorded track duration14.75 days

Full archive record, including non-tropical stages if present

Approximate track distance5,950 km

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 5 Sept 2021, 06:00 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 8 Sept 2021, 06:00 UTC. The highest recorded tropical-stage one-minute sustained wind is 155 knots (178 mph / 287 km/h), first recorded on 10 Sept 2021, 18:00 UTC at 19.5°N, 122.3°E. The minimum recorded tropical-stage central pressure is 902 hPa on 10 Sept 2021, 18:00 UTC.

The full record spans 354 hours and approximately 5,950 kilometers along the recorded center positions. The last recorded position is 31.8°N, 140.7°E on 20 Sept 2021, 00:00 UTC. The final tropical-stage observation is earlier, on 18 Sept 2021, 03:00 UTC.

This summary is calculated from the NOAA IBTrACS archive. Category 5 describes the storm’s peak recorded wind intensity, not its intensity at landfall or the severity of impacts at any location. Landfall times, damage and casualties have not been independently reviewed for this page.

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 · Field documentation

Sources & methodology

Browse all Category 5 storm pages