Typhoon Merbok (2011)

Basin

Western Pacific

Dates

August 2, 2011 to August 12, 2011

Peak strength

Category 1, 75 kt (86 mph)

Lowest pressure

967 mb (28.56 inHg)

Landfall

No; closest approach 313 km (194 mi)

Accumulated cyclone energy

6.6

Tropical-storm-force wind reached

280 nmi (519 km, 322 mi) from the center at its widest

Hurricane-force wind reached

35 nmi (65 km, 40 mi) from the center at its widest

Eyewall radius at its peak

20 nmi (37 km, 23 mi)

Overall size

240 nmi (444 km, 276 mi) to the outermost closed isobar

Fastest the center moved

20 kt (23 mph)

Identifier

WP122011

No source this site reads carries a casualty or damage figure for this storm.

• Unnamed tropical depressionWestern Pacific · 2011Tropical Depression30 kt · 1000 mb
• Unnamed tropical depressionWestern Pacific · 2011Tropical Depression30 kt · 1000 mb
• Tropical Storm AereWestern Pacific · 2011Tropical Storm50 kt · 978 mb
• Super Typhoon SongdaWestern Pacific · 2011Cat 5140 kt · 918 mb
• Unnamed tropical depressionWestern Pacific · 2011Tropical Depression
• Tropical Depression SarikaWestern Pacific · 2011Tropical Depression30 kt · 1000 mb
• Tropical Storm HaimaWestern Pacific · 2011Tropical Storm35 kt · 993 mb
• Tropical Storm MeariWestern Pacific · 2011Tropical Storm55 kt · 982 mb
• Typhoon Ma-OnWestern Pacific · 2011Cat 4115 kt · 937 mb
• Tropical Depression TokageWestern Pacific · 2011Tropical Depression30 kt · 1000 mb
• Typhoon Nock-TenWestern Pacific · 2011Cat 165 kt · 974 mb
• Super Typhoon MuifaWestern Pacific · 2011Cat 5140 kt · 918 mb
• Unnamed tropical depressionWestern Pacific · 2011Tropical Depression30 kt · 1000 mb
• Super Typhoon NanmadolWestern Pacific · 2011Cat 5140 kt · 918 mb
• Tropical Storm TalasWestern Pacific · 2011Tropical Storm55 kt · 982 mb
• Tropical Storm NoruWestern Pacific · 2011Tropical Storm45 kt · 982 mb
• Tropical Storm KulapWestern Pacific · 2011Tropical Storm40 kt · 993 mb
• Typhoon RokeWestern Pacific · 2011Cat 4115 kt · 937 mb
• Typhoon SoncaWestern Pacific · 2011Cat 290 kt · 956 mb
• Typhoon NesatWestern Pacific · 2011Cat 4115 kt · 937 mb
• Tropical Storm HaitangWestern Pacific · 2011Tropical Storm35 kt · 996 mb
• Super Typhoon NalgaeWestern Pacific · 2011Cat 4130 kt · 926 mb
• Tropical Depression BanyanWestern Pacific · 2011Tropical Depression30 kt · 1000 mb
• Unnamed tropical depressionWestern Pacific · 2011Tropical Depression25 kt · 1004 mb
• Unnamed tropical depressionWestern Pacific · 2011Tropical Depression25 kt · 1004 mb
• Unnamed tropical depressionWestern Pacific · 2011Tropical Depression25 kt · 1004 mb
• Tropical Storm WashiWestern Pacific · 2011Tropical Storm50 kt · 985 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.