Typhoon Ivy (1977)

Basin

Western Pacific

Dates

October 18, 1977 to October 27, 1977

Peak strength

Category 2, 90 kt (104 mph)

Lowest pressure

940 mb (27.76 inHg)

Landfall

No; closest approach 648 km (403 mi)

Accumulated cyclone energy

9.4

Identifier

WP171977

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 depressionWestern Pacific · 1977Tropical Depression
• Tropical Storm PatsyWestern Pacific · 1977Tropical Storm50 kt · 990 mb
• Unnamed tropical depressionWestern Pacific · 1977Tropical Depression30 kt
• Tropical Storm RuthWestern Pacific · 1977Tropical Storm60 kt · 975 mb
• Unnamed tropical depressionWestern Pacific · 1977Tropical Depression30 kt
• Typhoon SarahWestern Pacific · 1977Cat 175 kt · 970 mb
• Typhoon ThelmaWestern Pacific · 1977Cat 285 kt · 950 mb
• Typhoon VeraWestern Pacific · 1977Cat 3110 kt · 925 mb
• Tropical Storm WandaWestern Pacific · 1977Tropical Storm45 kt · 985 mb
• Unnamed tropical depressionWestern Pacific · 1977Tropical Depression
• Unnamed tropical depressionWestern Pacific · 1977Tropical Depression
• Tropical Storm AmyWestern Pacific · 1977Tropical Storm50 kt · 985 mb
• Tropical Depression AmyWestern Pacific · 1977Tropical Depression
• Unnamed tropical stormWestern Pacific · 1977Tropical Storm40 kt · 988 mb
• Unnamed tropical depressionWestern Pacific · 1977Tropical Depression
• Tropical Storm CarlaWestern Pacific · 1977Tropical Storm35 kt · 990 mb
• Super Typhoon BabeWestern Pacific · 1977Cat 4130 kt · 905 mb
• Typhoon DinahWestern Pacific · 1977Cat 175 kt · 965 mb
• Tropical Storm EmmaWestern Pacific · 1977Tropical Storm60 kt · 965 mb
• Tropical Storm FredaWestern Pacific · 1977Tropical Storm55 kt · 980 mb
• Typhoon GildaWestern Pacific · 1977Cat 170 kt · 965 mb
• Unnamed tropical stormWestern Pacific · 1977Tropical Storm40 kt · 990 mb
• Unnamed tropical depressionWestern Pacific · 1977Tropical Depression
• Tropical Storm HarrietWestern Pacific · 1977Tropical Storm55 kt · 980 mb
• Typhoon JeanWestern Pacific · 1977Cat 165 kt · 970 mb
• Typhoon KimWestern Pacific · 1977Cat 4125 kt · 920 mb
• Typhoon LucyWestern Pacific · 1977Cat 4115 kt · 920 mb
• Typhoon MaryWestern Pacific · 1977Cat 295 kt · 945 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.