ABNT30 KNHC 011244

800 AM EST SUN NOV 01 2015

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

No tropical cyclones formed in the Atlantic basin during the month of October. Joaquin was a major hurricane that was ongoing at the beginning of the month. Joaquin strengthened into a category 4 hurricane later that day and maintained that intensity until 2 October when it weakened to just below category 4 status. Joaquin re-intensified on 3 October to just below category 5 strength while moving slowly southwestward into the central Bahamas, killing 34 people. Joaquin moved northeastward and steadily weakened as it passed just west of Bermuda on 5 October and became an extratropical low over the far North Atlantic on 7 October. Based on a 30-year (1981-2010) climatology, two named storms typically form in the Atlantic basin in October, with one becoming a hurricane. A major hurricane forms in October once every other year.

In terms of Accumulated Cyclone Energy (ACE), which measures the combined strength and duration of tropical storms and hurricanes, activity in the Atlantic basin through October has only been about 58 percent of the 30-year average.

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 50 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

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

$$ Hurricane Specialist Unit

Preliminary Atlantic Tropical Cyclone Tracks
Preliminary Atlantic Tropical Cyclone Tracks