Typhoon Choi-Wan (2015)

Basin

Western Pacific

Dates

October 1, 2015 to October 11, 2015

Peak strength

Category 1, 70 kt (81 mph)

Lowest pressure

952 mb (28.11 inHg)

Landfall

Yes

Accumulated cyclone energy

5.7

Tropical-storm-force wind reached

330 nmi (611 km, 380 mi) from the center at its widest

Hurricane-force wind reached

75 nmi (139 km, 86 mi) from the center at its widest

Eyewall radius at its peak

50 nmi (93 km, 58 mi)

Overall size

400 nmi (741 km, 460 mi) to the outermost closed isobar

Peak gust in the best track

65 kt (75 mph)

Fastest the center moved

33 kt (38 mph)

Identifier

WP232015

The sources count different things and are not added together.

NOAA’s Storm Events database, the record National Weather Service offices compile months after a storm, as compiled March 2026.

Deaths

0 (0 direct, 0 indirect)

Injuries

3

Property damage

none recorded

Crop damage

none recorded

Events recorded

1 in 1 reports from 1 states and marine areas

State by state

What was recorded

1 high surf.

From the Storm Events narratives, unedited.

During the morning of October 3rd, Tropical Depression 23W formed just west of Wake Island. The depression became Tropical Storm Choi-wan later that same morning. Further intensification resulted in Choi-wan becoming a typhoon on the afternoon of the 6th. The typhoon passed to the northeast of the Marianas, and even though it did not pass across any local islands, swells generated by the typhoon pushed down across Guam. The long period swells from Choi-wan impacted a 25 foot boat that was trying to exit Hagatna Boat Basin on the morning of the 9th. The waves capsized the boat and sent two out of the three people using the boat to the hospital.

Belau, Guam · High Surf · Oct 5, 02:00 UTC

• Typhoon MekkhalaWestern Pacific · 2015 · 3 deathsCat 170 kt · 970 mb
• Super Typhoon HigosWestern Pacific · 2015Cat 4130 kt · 926 mb
• Tropical Storm BaviWestern Pacific · 2015Tropical Storm50 kt · 985 mb
• Super Typhoon MaysakWestern Pacific · 2015Cat 5150 kt · 911 mb
• Tropical Storm HaishenWestern Pacific · 2015Tropical Storm45 kt · 989 mb
• Super Typhoon NoulWestern Pacific · 2015Cat 5140 kt · 918 mb
• Super Typhoon DolphinWestern Pacific · 2015Cat 5140 kt · 918 mb
• Tropical Storm KujiraWestern Pacific · 2015Tropical Storm50 kt · 985 mb
• Typhoon Chan-HomWestern Pacific · 2015Cat 4120 kt · 933 mb
• Typhoon LinfaWestern Pacific · 2015Cat 175 kt · 967 mb
• Super Typhoon NangkaWestern Pacific · 2015Cat 4135 kt · 922 mb
• Unnamed tropical stormWestern Pacific · 2015Tropical Storm35 kt · 996 mb
• Super Typhoon SoudelorWestern Pacific · 2015 · 59 deathsCat 5155 kt · 907 mb
• Unnamed tropical depressionWestern Pacific · 2015Tropical Depression30 kt · 1000 mb
• Tropical Storm MolaveWestern Pacific · 2015Tropical Storm45 kt · 986 mb
• Typhoon GoniWestern Pacific · 2015Cat 4120 kt · 933 mb
• Super Typhoon AtsaniWestern Pacific · 2015Cat 5140 kt · 918 mb
• Tropical Storm EtauWestern Pacific · 2015Tropical Storm60 kt · 978 mb
• Tropical Storm VamcoWestern Pacific · 2015Tropical Storm35 kt · 996 mb
• Typhoon KrovanhWestern Pacific · 2015Cat 3100 kt · 948 mb
• Super Typhoon DujuanWestern Pacific · 2015Cat 4130 kt · 926 mb
• Typhoon MujigaeWestern Pacific · 2015Cat 4115 kt · 937 mb
• Super Typhoon KoppuWestern Pacific · 2015Cat 4130 kt · 926 mb
• Typhoon ChampiWestern Pacific · 2015Cat 4125 kt · 929 mb
• Unnamed tropical stormWestern Pacific · 2015Tropical Storm35 kt · 996 mb
• Typhoon In-FaWestern Pacific · 2015Cat 4120 kt · 933 mb
• Typhoon MelorWestern Pacific · 2015Cat 4125 kt · 929 mb
• Unnamed tropical depressionWestern Pacific · 2015Tropical Depression25 kt · 1004 mb
• Unnamed tropical depressionWestern Pacific · 2015Tropical Depression30 kt · 1001 mb

A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.

Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.