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Tropical Weather Summary



000
ABPZ30 KNHC 011536
TWSEP 

MONTHLY TROPICAL WEATHER SUMMARY
NWS NATIONAL HURRICANE CENTER MIAMI FL
800 AM PST THU DEC 1 2011

FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE..

ONE NAMED STORM FORMED DURING THE MONTH OF NOVEMBER...KENNETH...
WHICH BECAME A RARE LATE-SEASON MAJOR HURRICANE. ON AVERAGE...SINCE
THE BEGINNING OF THE SATELLITE ERA IN 1971...A HURRICANE FORMS IN
THE BASIN DURING NOVEMBER ONLY ABOUT ONCE EVERY 10 YEARS. KENNETH
WAS THE LATEST OBSERVED MAJOR HURRICANE ON RECORD IN THE BASIN IN
THE SATELLITE ERA.

DURING THE 2011 EASTERN NORTH PACIFIC HURRICANE SEASON 11 NAMED
STORMS FORMED...OF WHICH 10 BECAME HURRICANES AND 6 BECAME MAJOR
HURRICANES. TWO TROPICAL DEPRESSIONS ALSO FORMED THAT DID NOT REACH
TROPICAL STORM STRENGTH. THE LONG-TERM AVERAGES ARE 15 NAMED
STORMS...9 HURRICANES AND 4 MAJOR HURRICANES. FOR 2011 THE NUMBER
OF NAMED STORMS WAS BELOW THE LONG-TERM AVERAGE...THE NUMBER OF
HURRICANES WAS NEAR AVERAGE...AND THE NUMBER OF MAJOR HURRICANES
WAS ABOVE AVERAGE. IN TERMS OF ACCUMULATED CYCLONE ENERGY...ACE...
WHICH MEASURES THE COMBINED STRENGTH AND DURATION OF TROPICAL STORMS
AND HURRICANES...ACTIVITY IN THE BASIN WAS ABOVE NORMAL...WITH A
VALUE OF 120 PERCENT OF THE LONG-TERM MEDIAN. 

REPORTS ON INDIVIDUAL CYCLONES...WHEN COMPLETED...ARE AT THE WEB
SITE OF THE NATIONAL HURRICANE CENTER...USE LOWER-CASE LETTERS...
HTTP://WWW.NHC.NOAA.GOV/2011EPAC.SHTML

REPORTS ON SYSTEMS WITH AN ASTERISK NEXT TO THEIR NAME HAVE BEEN
FINALIZED AS OF 1 DECEMBER. 

NAME                 DATES         MAX WIND (MPH)    
-------------------------------------------------
*MH ADRIAN         7-12 JUN            140
*H BEATRIZ        19-22 JUN             90
*H CALVIN          7-10 JUL             80
*MH DORA          18-24 JUL            155
*MH EUGENE     31 JUL-6 AUG            140
TS FERNANDA       15-19 AUG             65
 H GREG           16-21 AUG             85 
*TD EIGHT-E          31 AUG             35
MH HILARY         21-30 SEP            145
 H IRWIN           6-16 OCT             90
MH JOVA            6-12 OCT            125
TD TWELVE-E       12-13 OCT             35
MH KENNETH        19-25 NOV            145

$$
HURRICANE SPECIALIST UNIT




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Page last modified: Thursday, 01-Dec-2011 15:36:56 UTC