Hurricane Isidore (1990)

Basin

North Atlantic

Dates

September 4, 1990 to September 17, 1990

Peak strength

Category 2, 85 kt (98 mph)

Lowest pressure

978 mb (28.88 inHg)

Landfall

No; closest approach 588 km (365 mi)

Accumulated cyclone energy

19.5

Fastest the center moved

22 kt (25 mph)

Identifier

AL101990

No source this site reads publishes a machine-readable casualty or damage figure for a storm of this era. The National Hurricane Center’s season tables begin in 1995 and carry deaths and damage only from 2005 in the Atlantic and 2020 in both basins; the US Storm Events record begins in 1996.

• Unnamed tropical depressionNorth Atlantic · 1990Tropical Depression25 kt
• Tropical Storm ArthurNorth Atlantic · 1990Tropical Storm60 kt · 995 mb
• Hurricane BerthaNorth Atlantic · 1990Cat 170 kt · 973 mb
• Tropical Storm CesarNorth Atlantic · 1990Tropical Storm45 kt · 1000 mb
• Tropical Storm EdouardNorth Atlantic · 1990Tropical Storm40 kt · 1003 mb
• Hurricane DianaNorth Atlantic · 1990Cat 285 kt · 980 mb
• Tropical Storm FranNorth Atlantic · 1990Tropical Storm35 kt · 1007 mb
• Hurricane GustavNorth Atlantic · 1990Cat 3105 kt · 956 mb
• Tropical Storm HortenseNorth Atlantic · 1990Tropical Storm55 kt · 993 mb
• Unnamed tropical depressionNorth Atlantic · 1990Tropical Depression30 kt
• Hurricane JosephineNorth Atlantic · 1990Cat 175 kt · 980 mb
• Hurricane KlausNorth Atlantic · 1990Cat 170 kt · 985 mb
• Hurricane LiliNorth Atlantic · 1990Cat 165 kt · 987 mb
• Tropical Storm MarcoNorth Atlantic · 1990Tropical Storm55 kt · 989 mb
• Hurricane NanaNorth Atlantic · 1990Cat 175 kt · 989 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.