Typhoon Agnes (1984)

Basin

Western Pacific

Dates

October 28, 1984 to November 9, 1984

Peak strength

Category 4, 120 kt (138 mph)

Lowest pressure

925 mb (27.32 inHg)

Landfall

Yes

Accumulated cyclone energy

21.7

Fastest the center moved

18 kt (21 mph)

Identifier

WP271984

The sources count different things and are not added together.

• Tropical Storm VernonWestern Pacific · 1984Tropical Storm40 kt · 994 mb
• Tropical Storm WynneWestern Pacific · 1984Tropical Storm60 kt · 980 mb
• Typhoon AlexWestern Pacific · 1984Cat 175 kt · 960 mb
• Tropical Storm BettyWestern Pacific · 1984Tropical Storm55 kt · 985 mb
• Typhoon CaryWestern Pacific · 1984Cat 290 kt · 955 mb
• Typhoon DinahWestern Pacific · 1984Cat 4125 kt · 915 mb
• Typhoon EdWestern Pacific · 1984Cat 3100 kt · 950 mb
• Tropical Storm FredaWestern Pacific · 1984Tropical Storm55 kt · 985 mb
• Unnamed tropical depressionWestern Pacific · 1984Tropical Depression30 kt
• Unnamed tropical depressionWestern Pacific · 1984Tropical Depression
• Typhoon HollyWestern Pacific · 1984Cat 175 kt · 960 mb
• Tropical Storm GeraldWestern Pacific · 1984Tropical Storm55 kt · 980 mb
• Unnamed tropical depressionWestern Pacific · 1984Tropical Depression
• Unnamed tropical depressionWestern Pacific · 1984Tropical Depression20 kt
• Tropical Depression HollyWestern Pacific · 1984Tropical Depression
• Tropical Storm JuneWestern Pacific · 1984Tropical Storm60 kt · 985 mb
• Typhoon IkeWestern Pacific · 1984Cat 4125 kt · 950 mb
• Typhoon KellyWestern Pacific · 1984Cat 175 kt · 965 mb
• Tropical Storm LynnWestern Pacific · 1984Tropical Storm40 kt · 998 mb
• Tropical Storm NinaWestern Pacific · 1984Tropical Storm55 kt · 992 mb
• Tropical Storm MauryWestern Pacific · 1984Tropical Storm60 kt · 990 mb
• Typhoon OgdenWestern Pacific · 1984Cat 170 kt · 980 mb
• Typhoon PhyllisWestern Pacific · 1984Cat 180 kt · 975 mb
• Tropical Storm RoyWestern Pacific · 1984Tropical Storm35 kt · 996 mb
• Tropical Storm SusanWestern Pacific · 1984Tropical Storm40 kt · 996 mb
• Typhoon ThadWestern Pacific · 1984Cat 4120 kt · 935 mb
• Typhoon WarrenWestern Pacific · 1984Cat 165 kt · 975 mb
• Unnamed tropical depressionWestern Pacific · 1984Tropical Depression
• Super Typhoon VanessaWestern Pacific · 1984Cat 5155 kt · 880 mb
• Unnamed tropical depressionWestern Pacific · 1984Tropical Depression
• Super Typhoon BillWestern Pacific · 1984Cat 4130 kt · 910 mb
• Typhoon ClaraWestern Pacific · 1984Cat 3110 kt · 940 mb
• Typhoon DoyleWestern Pacific · 1984Cat 4125 kt · 940 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.

• Wikipedia article: Typhoon Agnes