ABNT30 KNHC 010513

Monthly Tropical Weather Summary
NWS National Hurricane Center Miami FL
800 AM EDT Sat Dec 1 2018

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

No tropical cyclones occurred in the basin during November, which is not uncommon since a November tropical storm occurs about once every other year.

Overall, the 2018 Atlantic hurricane season featured above normal activity. Fifteen named storms formed, of which eight became hurricanes and two became major hurricanes - category 3 or higher on the Saffir-Simpson Hurricane Wind Scale. This compares to the long-term average of 12 named storms, 6 hurricanes, and 3 major hurricanes. There was also one tropical depression that did not reach tropical-storm strength. In terms of Accumulated Cyclone Energy (ACE), which measures the combined strength and duration of tropical storms and hurricanes, activity in the Atlantic basin in 2018 was also above normal. In addition, 7 systems were subtropical at some point in their lifetime this season, which eclipses the previous record of 5 in 1969.

Reports on individual cyclones, when completed, are available at the National Hurricane Center website at www.hurricanes.gov/data/tcr/index.php?season=2018&basin=atl .

Summary Table

Name Dates Max Wind (mph)
TS Alberto 25-31 May 65* H Beryl 4-15 Jul 80* H Chris 6-12 Jul 105 TS Debby 7- 9 Aug 50 TS Ernesto 15-18 Aug 45 MH Florence 31 Aug-17 Sep 140 TS Gordon 3- 7 Sep 70 H Helene 7-16 Sep 110 H Isaac 7-15 Sep 75 TS Joyce 12-18 Sep 45 TD Eleven 22-23 Sep 35 TS Kirk 22-28 Sep 60 H Leslie 23 Sep-13 Oct 90 MH Michael 7-12 Oct 155 TS Nadine 9-12 Oct 65 H Oscar 27-31 Oct 105

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

$$ Hurricane Specialist Unit

Preliminary Atlantic Tropical Cyclone Tracks
Preliminary Atlantic Tropical Cyclone Tracks