Hurricane History Map

1999 North Atlantic season

16 storms formed in the North Atlantic basin in 1999, from 11 June 1999 to 23 November 1999.

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Years1999
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 1999 season in numbers

The record holds 16 storms for the 1999 North Atlantic season, of which 12 had names.12 reached tropical storm strength (34 knots or more), 8 reached hurricane strength (category 1 or more) and 5 were major (category 3 or more).

  • 16storms
  • 12tropical storm strength or more
  • 8hurricane strength or more
  • 5major (category 3 to 5)
  • 177accumulated 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 1999

  • Floyd (1999)7 September 1999 to 19 September 1999, peak Category 4 (135 kt), 921 hPa
  • Lenny (1999)13 November 1999 to 23 November 1999, peak Category 4 (135 kt), 933 hPa
  • Gert (1999)11 September 1999 to 23 September 1999, peak Category 4 (130 kt), 930 hPa
  • Bret (1999)18 August 1999 to 25 August 1999, peak Category 4 (125 kt), 944 hPa
  • Cindy (1999)19 August 1999 to 31 August 1999, peak Category 4 (120 kt), 942 hPa

All 16 storms of 1999

StormPeak
Arlene Tropical storm
Unnamed storm Tropical depression
Bret Category 4
Cindy Category 4
Emily Tropical storm
Dennis Category 2
Unnamed storm Tropical depression
Floyd Category 4
Gert Category 4
Harvey Tropical storm
Unnamed storm Tropical depression
Unnamed storm Tropical depression
Irene Category 2
Jose Category 2
Katrina Tropical storm
Lenny Category 4

← 1998 · 2000 → · All seasons

Other basins in 1999

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