000
ABNT30 KNHC 011244
TWSAT
Monthly Tropical Weather Summary
NWS National Hurricane Center Miami FL
700 AM EST Fri Dec 1 2017
For the North Atlantic...Caribbean Sea and the Gulf of Mexico:
One named storm, Rina, formed in the North Atlantic basin in
November. Based on a 30-year climatology (1981-2010), a named storm
forms in the basin in roughly 7 out of 10 years in November, with a
hurricane forming about once every other year.
Overall activity in the Atlantic basin in 2017 was well above
average, with 17 named storms, 10 hurricanes, and 6 major
hurricanes. This compares to the long-term averages of 12 named
storms, 6 hurricanes, and 3 major hurricanes. One unnamed tropical
depression also formed in 2017.
In terms of Accumulated Cyclone Energy (ACE), which measures the
combined strength and duration of tropical storms and hurricanes,
preliminary data indicate that the 2017 season was the most active
since 2005 and the 7th most active on record in the basin, behind
1933, 2005, 1893, 1926, 1995, and 2004.
Reports on individual cyclones, when completed, are available at
the National Hurricane Center website at
www.hurricanes.gov/data/tcr/index.php?season=2017&basin=atl .
Summary Table
Name Dates Max Wind (mph)
---------------------------------------------------
TS Arlene 19-21 Apr 50*
TS Bret 19-20 Jun 45
TS Cindy 20-23 Jun 60
TD Four 5- 7 Jul 30*
TS Don 17-18 Jul 50
TS Emily 31 Jul- 1 Aug 45
H Franklin 6-10 Aug 85
H Gert 13-17 Aug 105
MH Harvey 17 Aug- 1 Sep 130
MH Irma 30 Aug-12 Sep 185
MH Jose 5-22 Sep 155
H Katia 5- 9 Sep 105*
MH Lee 15-30 Sep 115
MH Maria 16-30 Sep 175
H Nate 4- 9 Oct 90
MH Ophelia 9-15 Oct 115
TS Philippe 28-29 Oct 60
TS Rina 6- 9 Nov 60
---------------------------------------------------
* Denotes a storm for which the post-storm analysis is complete.
$$
Hurricane Specialist Unit