2006 Western Pacific typhoon season
Typhoon Yagi 2006
Typhoon Yagi looped over the western Pacific before reaching Category 5 strength in September 2006. Its later passage through Japan's Ogasawara Islands damaged homes and cut power and communications.
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161 mph
Sep 21, 2006 during the tropical stage
Full archive record, including non-tropical stages if present
Along the recorded center positions
STORM HISTORY
An early loop over the Pacific
Yagi developed east-northeast of Guam in mid-September. Weak steering winds allowed the storm to make a clockwise loop while it strengthened. After completing the loop, it moved under the influence of a subtropical ridge southeast of Japan.
Maximum one-minute winds reached 140 kt on September 21, equivalent to Category 5. Yagi then passed near Iwo Jima and Chichi-jima as it turned northeast. Increasing wind shear weakened the storm and began its transition out of the tropics.
Power failures on Chichi-jima
On Chichi-jima, about 1,000 homes lost power and around 150 residents moved to shelters. Strong winds damaged roofs and windows, toppled streetlights and brought trees down onto power lines. At least one structure was destroyed, but the saved account reports no deaths or injuries.
Yagi continued northeast as an extratropical system after the island passage. Its remnants crossed the International Date Line on September 27, at the far end of the archived track.
Further reading
NOAA IBTrACS v04r01 historical track archive
QUICK ANSWERS
Yagi in brief
What was Typhoon Yagi's highest wind speed?
161 mph, the highest one-minute sustained wind in its tropical stage, recorded on Sep 21, 2006, 12:00 PM UTC.
What category was Typhoon Yagi?
Category 5 at its peak on the Saffir–Simpson one-minute wind scale, first reaching Category 5 on Sep 21, 2006, 12:00 PM UTC. Other agencies classify storms differently.
What was Typhoon Yagi's lowest pressure?
898 mb, the minimum central pressure recorded during its tropical stage, on Sep 21, 2006, 12:00 PM UTC.
When did Typhoon Yagi occur?
The archived track runs from Sep 16, 2006, 12:00 AM UTC to Sep 27, 2006, 06:00 AM UTC, with the tropical stage from Sep 17, 2006, 12:00 AM UTC to Sep 24, 2006, 03:00 PM UTC.
Where did Typhoon Yagi form?
In the Western Pacific basin, in the 2006 season. Its first archived position is 18.7°N, 155.4°E on Sep 16, 2006, 12:00 AM UTC.
Did Typhoon Yagi make landfall?
No archived position places Typhoon Yagi's center over land, but positions are six-hourly and a brief landfall can fall between them.
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