Hurricane Hernan (1990)

Basin

Eastern Pacific

Dates

July 19, 1990 to July 31, 1990

Peak strength

Category 4, 135 kt (155 mph)

Lowest pressure

928 mb (27.40 inHg)

Landfall

No; closest approach 775 km (482 mi)

Accumulated cyclone energy

30.6

Fastest the center moved

10 kt (12 mph)

Identifier

EP091990

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.

• Hurricane AlmaEastern Pacific · 1990Cat 175 kt · 979 mb
• Hurricane BorisEastern Pacific · 1990Cat 180 kt · 977 mb
• Tropical Storm CristinaEastern Pacific · 1990Tropical Storm55 kt · 994 mb
• Tropical Storm DouglasEastern Pacific · 1990Tropical Storm55 kt · 992 mb
• Hurricane ElidaEastern Pacific · 1990Cat 170 kt · 990 mb
• Unnamed tropical depressionEastern Pacific · 1990Tropical Depression30 kt
• Hurricane FaustoEastern Pacific · 1990Cat 175 kt · 979 mb
• Hurricane GenevieveEastern Pacific · 1990Cat 290 kt · 970 mb
• Hurricane IselleEastern Pacific · 1990Cat 3105 kt · 958 mb
• Unnamed tropical depressionEastern Pacific · 1990Tropical Depression25 kt
• Tropical Storm AkaEastern Pacific · 1990Tropical Storm55 kt · 994 mb
• Unnamed tropical depressionEastern Pacific · 1990Tropical Depression30 kt
• Unnamed tropical depressionEastern Pacific · 1990Tropical Depression30 kt
• Hurricane JulioEastern Pacific · 1990Cat 3100 kt · 960 mb
• Hurricane KennaEastern Pacific · 1990Cat 175 kt · 980 mb
• Hurricane LowellEastern Pacific · 1990Cat 165 kt · 986 mb
• Hurricane MarieEastern Pacific · 1990Cat 4120 kt · 944 mb
• Unnamed tropical depressionEastern Pacific · 1990Tropical Depression30 kt
• Hurricane NorbertEastern Pacific · 1990Cat 170 kt · 983 mb
• Hurricane OdileEastern Pacific · 1990Cat 4125 kt · 935 mb
• Tropical Storm RachelEastern Pacific · 1990Tropical Storm55 kt · 994 mb
• Hurricane PoloEastern Pacific · 1990Cat 165 kt · 987 mb
• Tropical Storm SimonEastern Pacific · 1990Tropical Storm60 kt · 990 mb
• Hurricane TrudyEastern Pacific · 1990Cat 4135 kt · 924 mb
• Hurricane VanceEastern Pacific · 1990Cat 285 kt · 975 mb
• Hurricane OwenEastern Pacific · 1990Cat 5140 kt · 925 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.