Hurricane Isis (2004)

Basin

Eastern Pacific

Dates

September 8, 2004 to September 21, 2004

Peak strength

Category 1, 65 kt (75 mph)

Lowest pressure

987 mb (29.15 inHg)

Landfall

No; closest approach 708 km (440 mi)

Accumulated cyclone energy

4.9

Tropical-storm-force wind reached

90 nmi (167 km, 104 mi) from the center at its widest

Hurricane-force wind reached

15 nmi (28 km, 17 mi) from the center at its widest

Peak gust in the best track

80 kt (92 mph)

Fastest the center moved

11 kt (13 mph)

Identifier

EP122004

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

• Tropical Storm AgathaEastern Pacific · 2004Tropical Storm50 kt · 997 mb
• Unnamed tropical depressionEastern Pacific · 2004Tropical Depression30 kt · 1007 mb
• Unnamed tropical depressionEastern Pacific · 2004Tropical Depression25 kt · 1007 mb
• Tropical Storm BlasEastern Pacific · 2004Tropical Storm55 kt · 991 mb
• Hurricane CeliaEastern Pacific · 2004Cat 175 kt · 981 mb
• Hurricane DarbyEastern Pacific · 2004Cat 3105 kt · 957 mb
• Unnamed tropical depressionEastern Pacific · 2004Tropical Depression25 kt · 1008 mb
• Tropical Storm EstelleEastern Pacific · 2004Tropical Storm60 kt · 989 mb
• Hurricane FrankEastern Pacific · 2004Cat 175 kt · 979 mb
• Unnamed tropical depressionEastern Pacific · 2004Tropical Depression30 kt · 1005 mb
• Tropical Storm GeorgetteEastern Pacific · 2004Tropical Storm55 kt · 995 mb
• Hurricane HowardEastern Pacific · 2004Cat 4120 kt · 943 mb
• Hurricane JavierEastern Pacific · 2004Cat 4130 kt · 930 mb
• Tropical Storm KayEastern Pacific · 2004Tropical Storm40 kt · 1004 mb
• Tropical Storm LesterEastern Pacific · 2004Tropical Storm45 kt · 1000 mb
• Unnamed tropical depressionEastern Pacific · 2004Tropical Depression30 kt · 1004 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.

The National Hurricane Center has published no tropical cyclone report for this storm.

• Every advisory and discussion NHC issued while it was live