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WESTERN PACIFIC · 1971 SEASON

Typhoon Nadine (1971)

Recorded track and intensity · 19 Jul 1971–27 Jul 1971

PEAK INTENSITYCategory 5
THE COMPLETE TRACKOpen in the explorer
NADINE: complete recorded track, 19 Jul 1971–27 Jul 1971Recorded track from 19 Jul 1971 to 27 Jul 1971. Colors show the recorded wind category. The highlighted position follows the replay controls.PHILIPPINES19 Jul, 00:00 UTC20 Jul, 00:00 UTC21 Jul, 00:00 UTC22 Jul, 00:00 UTC23 Jul, 00:00 UTC24 Jul, 00:00 UTC25 Jul, 00:00 UTC26 Jul, 00:00 UTC27 Jul, 00:00 UTCPeak · Category 519 JUL27 JUL

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

Wind speed & pressure

24 Jul, 06:00 UTC
Wind speed 150 ktPressure 900 hPa
0900809601601020kthPa19 Jul21 Jul24 Jul27 Jul

Forward speed & ACE

24 Jul, 06:00 UTC
Forward speed 10 ktCumulative ACE 15.49 10⁴ kt²
0010152030kt10⁴ kt²19 Jul21 Jul24 Jul27 Jul

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 measurements remain gaps.

Maximum sustained wind150 kt

173 mph / 278 km/h

Minimum recorded pressure900 hPa

24 Jul 1971 · tropical stage

Recorded track duration8.5 days

Full archive record, including non-tropical stages if present

Approximate track distance3,810 km

Along the recorded center positions

STORM HISTORY

Track and intensity summary

Nadine is listed in the Western Pacific basin for the 1971 season. Its archived track begins on 19 Jul 1971, 00:00 UTC at 11.3°N, 143.8°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 23 Jul 1971, 15:00 UTC. The highest recorded tropical-stage one-minute sustained wind is 150 knots (173 mph / 278 km/h), first recorded on 24 Jul 1971, 06:00 UTC at 19.5°N, 127.8°E. The minimum recorded tropical-stage central pressure is 900 hPa on 24 Jul 1971, 06:00 UTC.

The full record spans 204 hours and approximately 3,810 kilometers along the recorded center positions. The last recorded position is 29.3°N, 114.5°E on 27 Jul 1971, 12:00 UTC. The final tropical-stage observation is earlier, on 26 Jul 1971, 15:00 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

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