WESTERN PACIFIC · 1971 SEASON
Typhoon Amy (1971)
Recorded track and intensity · 27 Apr 1971–7 May 1971
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Wind speed & pressure
2 May, 06:00 UTCForward speed & ACE
2 May, 06:00 UTCHover 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.
173 mph / 278 km/h
2 May 1971 · tropical stage
Full archive record, including non-tropical stages if present
Along the recorded center positions
STORM HISTORY
Track and intensity summary
Amy is listed in the Western Pacific basin for the 1971 season. Its archived track begins on 27 Apr 1971, 18:00 UTC at 5°N, 155°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 2 May 1971, 00:00 UTC. The highest recorded tropical-stage one-minute sustained wind is 150 knots (173 mph / 278 km/h), first recorded on 2 May 1971, 06:00 UTC at 10.7°N, 146.3°E. The minimum recorded tropical-stage central pressure is 890 hPa on 2 May 1971, 06:00 UTC.
The full record spans 240 hours and approximately 5,240 kilometers along the recorded center positions. The last recorded position is 35.5°N, 160°E on 7 May 1971, 18:00 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