Hurricane History Map

1977 Eastern and central Pacific season

17 storms formed in the Eastern and central Pacific basin in 1977, from 25 May 1977 to 23 October 1977.

Tap or scroll to load the interactive map

Years1977
Ocean basin

Choosing a minimum category hides storms with no wind speed in the record. To see which storms have passed near you, search a town or ZIP code, or tap the map.

Key
  • Tropical depression Winds below 34 knots (39 mph)
  • Tropical storm 34 to 63 knots (39 to 73 mph)
  • Category 1 64 to 82 knots (74 to 95 mph)
  • Category 2 83 to 95 knots (96 to 110 mph)
  • Category 3 96 to 112 knots (111 to 129 mph), major
  • Category 4 113 to 136 knots (130 to 156 mph), major
  • Category 5 137 knots (157 mph) or more, major
  • Unknown intensity No wind speed in the record
  • Post-tropical Storm has become post-tropical (dashed line)

How to read the lines. Each line is the track of one storm, drawn through its six-hourly positions and coloured by its intensity at each point (the Saffir-Simpson scale), so a line changes colour as the storm strengthens or weakens. Tap a line for its details, or tap anywhere else to see which storms have passed nearby. Weaker storms appear as you zoom in. Hurricanes, typhoons and cyclones are the same kind of storm with different names in different oceans.

The 1977 season in numbers

The record holds 17 storms for the 1977 Eastern and central Pacific season, of which 8 had names.8 reached tropical storm strength (34 knots or more), 4 reached hurricane strength (category 1 or more) and 0 were major (category 3 or more).

  • 17storms
  • 8tropical storm strength or more
  • 4hurricane strength or more
  • 0major (category 3 to 5)
  • 22accumulated cyclone energy

Accumulated cyclone energy adds up the squared wind speed of every position of 34 knots or more, divided by 10,000. It is approximate here because the winds are 1-minute equivalents, and it is mostly useful for comparing seasons of one basin.

Strongest storms of 1977

  • Florence (1977)20 September 1977 to 24 September 1977, peak Category 2 (90 kt)
  • Claudia (1977)3 July 1977 to 7 July 1977, peak Category 1 (80 kt)
  • Heather (1977)4 October 1977 to 7 October 1977, peak Category 1 (75 kt)
  • Doreen (1977)13 August 1977 to 18 August 1977, peak Category 1 (65 kt), 979 hPa
  • Ava (1977)25 May 1977 to 30 May 1977, peak Tropical storm (55 kt), 997 hPa

All 17 storms of 1977

StormPeak
Ava Tropical storm
Unnamed storm Tropical depression
Unnamed storm Tropical depression
Bernice Tropical storm
Claudia Category 1
Unnamed storm Tropical depression
Unnamed storm Tropical depression
Unnamed storm Tropical depression
Unnamed storm Tropical depression
Doreen Category 1
Unnamed storm Tropical depression
Emily Tropical storm
Unnamed storm Tropical depression
Florence Category 2
Glenda Tropical storm
Heather Category 1
Unnamed storm Tropical depression

← 1976 · 1978 → · All seasons

Other basins in 1977

Embed this map

Copy this code into your web page. It is free to use. Please keep the link under the map, as it is how people find where the map comes from.