000 ABNT30 KNHC 011239 TWSAT MONTHLY TROPICAL WEATHER SUMMARY NWS NATIONAL HURRICANE CENTER MIAMI FL 800 AM EST THU DEC 1 2011 FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO... ONE TROPICAL STORM...SEAN...FORMED DURING THE MONTH OF NOVEMBER. ON AVERAGE...A NAMED STORM FORMS DURING NOVEMBER ABOUT ONCE EVERY OTHER YEAR. TROPICAL CYCLONE ACTIVITY IN THE ATLANTIC BASIN DURING 2011 WAS ABOVE AVERAGE. THERE WERE 19 TROPICAL STORMS...INCLUDING AN UNNAMED STORM DURING SEPTEMBER THAT WAS ADDED DURING THE ROUTINE POST- ANALYSIS OF DATA FROM THE SEASON. POST-ANALYSIS ALSO REVEALED THAT NATE REACHED HURRICANE STRENGTH DURING ITS LIFETIME. OF THE 19 STORMS...7 BECAME HURRICANES...AND 3 BECAME MAJOR HURRICANES. ONE TROPICAL DEPRESSION ALSO FORMED THAT DID NOT REACH TROPICAL STORM STRENGTH. THE LONG-TERM AVERAGES FOR THE BASIN ARE 11 NAMED STORMS...6 HURRICANES AND 2 MAJOR HURRICANES. IN TERMS OF ACCUMULATED CYCLONE ENERGY...ACE...WHICH MEASURES THE COMBINED STRENGTH AND DURATION OF TROPICAL STORMS AND HURRICANES...2011 WAS ABOVE NORMAL...WITH A VALUE OF 132 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/2011ATLAN.SHTML REPORTS ON SYSTEMS WITH AN ASTERISK NEXT TO THEIR NAME HAVE BEEN FINALIZED AS OF 1 DECEMBER. SUMMARY TABLE NAME DATES MAX WIND (MPH) ---------------------------------------------------- TS ARLENE 29 JUN-1 JUL 65 TS BRET 17-22 JUL 65 *TS CINDY 20-22 JUL 70 *TS DON 27-30 JUL 50 TS EMILY 1-7 AUG 50 *TS FRANKLIN 12-13 AUG 45 *TS GERT 13-16 AUG 65 TS HARVEY 19-22 AUG 60 MH IRENE 20-28 AUG 120 TD TEN 25-26 AUG 35 TS JOSE 28-29 AUG 45 MH KATIA 29 AUG-10 SEP 135 TS UNNAMED 1-2 SEP 45 TS LEE 2-5 SEP 60 H MARIA 6-16 SEP 80 *H NATE 7-11 SEP 75 MH OPHELIA 21 SEP-3 OCT 140 H PHILIPPE 24 SEP-9 OCT 90 H RINA 23-28 OCT 110 TS SEAN 8-11 NOV 65 $$ HURRICANE SPECIALIST UNIT