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WESTERN PACIFIC · 1970 SEASON

Typhoon Olga (1970)

Recorded track and intensity · 26 Jun 1970–7 Jul 1970

PEAK INTENSITYCategory 5
THE COMPLETE TRACKOpen in the explorer
OLGA: complete recorded track, 26 Jun 1970–7 Jul 1970Recorded track from 26 Jun 1970 to 7 Jul 1970. Colors show the recorded wind category. The highlighted position follows the replay controls.ASIAPHILIPPINES27 Jun, 00:00 UTC28 Jun, 00:00 UTC29 Jun, 00:00 UTC30 Jun, 00:00 UTC1 Jul, 00:00 UTC2 Jul, 00:00 UTC3 Jul, 00:00 UTC4 Jul, 00:00 UTC5 Jul, 00:00 UTC6 Jul, 00:00 UTC7 Jul, 00:00 UTCPeak · Category 526 JUN7 JUL

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

Wind speed & pressure

1 Jul, 12:00 UTC
Wind speed 140 ktPressure 905 hPa
0900809601601020kthPa26 Jun30 Jun3 Jul7 Jul

Forward speed & ACE

1 Jul, 12:00 UTC
Forward speed 11 ktCumulative ACE 10.37 10⁴ kt²
0015153030kt10⁴ kt²26 Jun30 Jun3 Jul7 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 observations make ACE partial. Missing measurements remain gaps.

Maximum sustained wind140 kt

161 mph / 259 km/h

Minimum recorded pressure905 hPa

1 Jul 1970 · tropical stage

Recorded track duration10.75 days

Full archive record, including non-tropical stages if present

Approximate track distance6,650 km

Along the recorded center positions

STORM HISTORY

Track and intensity summary

Olga is listed in the Western Pacific basin for the 1970 season. Its archived track begins on 26 Jun 1970, 12:00 UTC at 7°N, 153.4°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 1 Jul 1970, 09:00 UTC. The highest recorded tropical-stage one-minute sustained wind is 140 knots (161 mph / 259 km/h), first recorded on 1 Jul 1970, 12:00 UTC at 19.3°N, 126.8°E. The minimum recorded tropical-stage central pressure is 905 hPa on 1 Jul 1970, 06:00 UTC.

The full record spans 258 hours and approximately 6,650 kilometers along the recorded center positions. The last recorded position is 33°N, 127°E on 7 Jul 1970, 06:00 UTC. The final tropical-stage observation is earlier, on 5 Jul 1970, 21:00 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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