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Monthly Eastern North Pacific Tropical Weather Summary

ABPZ30 KNHC 011549

Monthly Tropical Weather Summary
NWS National Hurricane Center Miami FL
800 AM PST Tue Dec 1 2020

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

Two tropical storms, Odalys and Polo, formed in the basin in 
November.  Although the long-term (1981-2010) average is one 
tropical storm forming in the basin every second or third year, this 
is the third straight November with at least one named storm 
forming.  In fact, named storms have formed in November in six of 
the past seven years in the basin. 

Overall, the 2020 eastern Pacific hurricane season featured an 
average number of named storms, but below average hurricane and 
major hurricane activity. There were sixteen named storms, of which 
four became hurricanes and three became major hurricanes - category 
3 or higher on the Saffir-Simpson Hurricane Wind Scale.  This 
compares to the long-term averages of fifteen named storms, eight 
hurricanes, and four major hurricanes. There were also five tropical 
depressions that did not reach tropical storm strength.

In terms of Accumulated Cyclone Energy (ACE), which measures the 
strength and duration of tropical storms and hurricanes, activity in 
the basin for 2020 was below normal, more than 40 percent below the 
long-term average.

Reports on individual cyclones, when completed, are available at
the National Hurricane Center website at:

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          20-28 Jul            130*  
H  Elida             8-12 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
MH Marie         29 Sep-6 Oct            130
TS Norbert           5-15 Oct             50
TS Odalys            3-6  Nov             50
TS Polo             17-19 Nov             45

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

Hurricane Specialist Unit