ABNT30 KNHC 011239

800 AM EST TUE DEC 01 2015

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

One tropical cyclone, Hurricane Kate, formed in the Atlantic basin during November. Based on a 30-year (1981-2010) climatology, a named storm forms in the Atlantic basin in November in about 7 out of 10 years, with a hurricane forming once every other year.

For the 2015 season, 11 named storms formed in the Atlantic basin. Four of the storms became hurricanes, and 2 reached major hurricane status. There was also one unnamed tropical depression. While the number of named storms, hurricanes, and major hurricanes was only a little below the long-term average activity levels of 12, 6, and 3, respectively, many of the named storms were relatively weak and short-lived. As a result, in terms of Accumulated Cyclone Energy (ACE), which measures the combined strength and duration of tropical storms and hurricanes, activity in the Atlantic basin for the season was only about 63 percent of the 1981-2010 median. This makes 2015 a below-average season in terms of ACE.

Reports on individual cyclones, when completed, are available at the National Hurricane Center website at www.nhc.noaa.gov/data/tcr/index.php?season=2015&basin=atl .

Summary Table

Name Dates Max Wind (mph)
TS Ana* 8-11 May 60 TS Bill* 16-18 Jun 60 TS Claudette* 13-14 Jul 50 MH Danny 18-24 Aug 115 TS Erika 25-29 Aug 50 H Fred 30 Aug-6 Sep 85 TS Grace* 5-9 Sep 60 TS Henri* 8-11 Sep 50 TD Nine* 16-19 Sep 35 TS Ida* 18-27 Sep 50 MH Joaquin 28 Sep-7 Oct 155 H Kate 9-12 Nov 75

* Denotes a storm for which the post-storm analysis is complete.

$$ Hurricane Specialist Unit

Preliminary Atlantic Tropical Cyclone Tracks
Preliminary Atlantic Tropical Cyclone Tracks