Hurricane Ophelia (2011)

Basin

North Atlantic

Dates

September 20, 2011 to October 4, 2011

Peak strength

Category 4, 120 kt (138 mph)

Lowest pressure

940 mb (27.76 inHg)

Landfall

Yes

Accumulated cyclone energy

18.7

Tropical-storm-force wind reached

250 nmi (463 km, 288 mi) from the center at its widest

Hurricane-force wind reached

40 nmi (74 km, 46 mi) from the center at its widest

Eyewall radius at its peak

15 nmi (28 km, 17 mi)

Overall size

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

Peak gust in the best track

145 kt (167 mph)

Fastest the center moved

38 kt (44 mph)

Identifier

AL162011

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

• Tropical Storm ArleneNorth Atlantic · 2011Tropical Storm55 kt · 993 mb
• Tropical Storm BretNorth Atlantic · 2011Tropical Storm60 kt · 995 mb
• Tropical Storm CindyNorth Atlantic · 2011Tropical Storm60 kt · 994 mb
• Tropical Storm DonNorth Atlantic · 2011Tropical Storm45 kt · 997 mb
• Tropical Storm EmilyNorth Atlantic · 2011Tropical Storm45 kt · 1003 mb
• Tropical Storm FranklinNorth Atlantic · 2011Tropical Storm40 kt · 1004 mb
• Tropical Storm GertNorth Atlantic · 2011Tropical Storm55 kt · 1000 mb
• Tropical Storm HarveyNorth Atlantic · 2011Tropical Storm55 kt · 994 mb
• Hurricane IreneNorth Atlantic · 2011 · 56 deathsCat 3105 kt · 942 mb
• Unnamed tropical depressionNorth Atlantic · 2011Tropical Depression30 kt · 1006 mb
• Tropical Storm JoseNorth Atlantic · 2011Tropical Storm40 kt · 1006 mb
• Hurricane KatiaNorth Atlantic · 2011Cat 4120 kt · 942 mb
• Unnamed tropical stormNorth Atlantic · 2011Tropical Storm40 kt · 1002 mb
• Tropical Storm LeeNorth Atlantic · 2011Tropical Storm50 kt · 986 mb
• Hurricane MariaNorth Atlantic · 2011Cat 170 kt · 983 mb
• Hurricane NateNorth Atlantic · 2011Cat 165 kt · 994 mb
• Hurricane PhilippeNorth Atlantic · 2011Cat 180 kt · 976 mb
• Hurricane RinaNorth Atlantic · 2011Cat 3100 kt · 966 mb
• Tropical Storm SeanNorth Atlantic · 2011Tropical Storm55 kt · 982 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.

• Tropical cyclone report, National Hurricane Center
• Every advisory and discussion NHC issued while it was live
• Best track as KMZ, National Hurricane Center
• Wikipedia article: Hurricane Ophelia