Skip Navigation Links
NOAA NOAA United States Department of Commerce

Monthly Eastern North Pacific Tropical Weather Summary



000
ABPZ30 KNHC 011655
TWSEP 

Monthly Tropical Weather Summary
NWS National Hurricane Center Miami FL
800 AM PDT Thu Oct 1 2020

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

Tropical cyclone activity in the eastern North Pacific basin during 
the month of September was slightly below average in terms of the 
number of hurricanes that occurred.  During the month, four 
tropical storms formed, but only one reached hurricane strength.  
Based on a 30-year (1981-2010) climatology, three-to-four named 
storms typically form in the basin in September, with two of those 
becoming hurricanes and one reaching major hurricane intensity. 

In terms of Accumulated Cyclone Energy (ACE), which measures the 
strength and duration of tropical storms and hurricanes, activity 
in the basin so far in 2020 has been rather quiet, about 60 percent 
below the long-term average.


Reports on individual cyclones, when completed, are available at
the National Hurricane Center website at:
www.hurricanes.gov/data/tcr/index.php?season=2020&basin=epac

Summary Table

Name                  Dates          Max Wind (mph)
---------------------------------------------------
TD One-E            25-26 Apr             35*
TS Amanda           30-31 May             40*
TS Boris            24-27 Jun             40
TD Four-E              30 Jun             35
TS Cristina          6-12 Jul             70
TD Six-E            13-14 Jul  35
TD Seven-E          20-21 Jul             35
MH Douglas          20-29 Jul            130  
H  Elida     9-12 Aug            100
TD Ten-E            13-16 Aug             35
TS Fausto           16-17 Aug             40
MH Genevieve        16-21 Aug            130
TS Hernan           26-28 Aug             45
TS Iselle           26-30 Aug             60
TS Julio             5-7  Sep             45
TS Karina           13-16 Sep             60
TS Lowell           20-25 Sep             50
H  Marie            29 Sep-               75
---------------------------------------------------

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

$$
Hurricane Specialist Unit