ABPZ30 KNHC 011249

Monthly Tropical Weather Summary
NWS National Hurricane Center Miami FL
700 AM PST Fri Dec 1 2017

For the eastern North Pacific, east of 140 degrees west longitude:

No tropical cyclones formed in the basin in November. This is not unusual, however, with a named storm forming in the basin in November only once every 4 years based on a 1981-2010 climatology.

For the 2017 season, 18 named storms formed, including 9 hurricanes and 4 major hurricanes. The number of named storms was above the long-term average of 15, while the number of hurricanes and major hurricanes was near the long term averages of 8 and 4, respectively. There were also two tropical depressions that formed 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 basin in 2017 was near normal. Despite the large number of tropical storms that formed in 2017, many of them were weak and/or short lived.

Reports on individual cyclones, when completed, are available at the National Hurricane Center website at: hurricanes.gov/data/tcr/index.php?season=2017&basin=epac

Summary Table

Name Dates Max Wind (mph)
TS Adrian 9-10 May 45* TS Beatriz 31 May- 2 Jun 45* TS Calvin 11-13 Jun 45* H Dora 24-28 Jun 105* MH Eugene 7-12 Jul 115* MH Fernanda 12-22 Jul 145 TS Greg 17-26 Jul 60 TD Eight-E 18-20 Jul 35 H Hilary 21-30 Jul 105 H Irwin 22 Jul- 1 Aug 90 TD Eleven-E 4- 5 Aug 35* TS Jova 11-13 Aug 40* MH Kenneth 18-23 Aug 130 TS Lidia 31 Aug- 3 Sep 65 H Max 13-15 Sep 80 H Norma 14-20 Sep 75 MH Otis 11-19 Sep 115 TS Pilar 23-25 Sep 40 TS Ramon 4- 5 Oct 45 TS Selma 27-28 Oct 40*

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

$$ Hurricane Specialist Unit

Preliminary Eastern North Pacific Tropical Cyclone Tracks
Preliminary Eastern North Pacific Tropical Cyclone Tracks