National Weather Service Weather Forecast Office

Tropical Weather Summary

613
ABNT30 KNHC 011154
TWSAT

MONTHLY TROPICAL WEATHER SUMMARY
NWS NATIONAL HURRICANE CENTER MIAMI FL
800 AM EDT TUE OCT 1 2013

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

TROPICAL CYCLONE ACTIVITY IN THE NORTH ATLANTIC BASIN DURING
SEPTEMBER WAS NEAR NORMAL IN TERMS OF THE NUMBER OF NAMED STORMS AND
HURRICANES...BUT BELOW NORMAL IN TERMS OF THE DURATION AND STRENGTH
OF THE CYCLONES.  FOUR NAMED STORMS FORMED...TWO OF WHICH BECAME
HURRICANES...AND THERE WERE NO MAJOR HURRICANES.  ALSO...ONE
TROPICAL DEPRESSION FORMED THAT FAILED TO REACH TROPICAL STORM
INTENSITY.  BASED ON A 30-YEAR (1981-2010) CLIMATOLOGY...FOUR NAMED
STORMS FORM ON AVERAGE IN THE ATLANTIC BASIN IN SEPTEMBER...WITH
TWO OR THREE BECOMING HURRICANES AND ONE BECOMING A MAJOR
HURRICANE.

FOR THE SEASON OVERALL AS OF THE END OF SEPTEMBER...THE TEN NAMED
STORMS IS NEAR THE AVERAGE VALUE OF 9.1...BUT THE TWO HURRICANES TO
DATE IS WELL BELOW THE AVERAGE OF 4.7.  THERE HAVE BEEN NO MAJOR
HURRICANES THUS FAR IN 2013...WELL BELOW THE AVERAGE OF 2.1.  IN
TERMS OF ACCUMULATED CYCLONE ENERGY...WHICH MEASURES THE COMBINED
STRENGTH AND DURATION OF TROPICAL STORMS AND HURRICANES...TROPICAL
CYCLONE ACTIVITY THROUGH THE END OF SEPTEMBER WAS ABOUT 70 PERCENT
BELOW THE 1981-2010 AVERAGE.

REPORTS ON INDIVIDUAL CYCLONES...WHEN COMPLETED...ARE AT THE WEB
SITE OF THE NATIONAL HURRICANE CENTER...USE LOWER-CASE LETTERS...
WWW.HURRICANES.GOV/2013ATLAN.SHTML

SUMMARY TABLE

NAME                DATES         MAX WIND (MPH)
---------------------------------------------------
TS ANDREA*           5-7 JUN           65
TS BARRY           17-20 JUN           45
TS CHANTAL          8-10 JUL           65
TS DORIAN*      23 JUL-3 AUG           60
TS ERIN            15-18 AUG           40
TS FERNAND         25-26 AUG           50
TS GABRIELLE        4-13 SEP           60
TD EIGHT             6-7 SEP           35
H  HUMBERTO         8-19 SEP           85
H  INGRID          12-16 SEP           85
TS JERRY         28 SEP-               50
---------------------------------------------------

* DENOTES A STORM FOR WHICH THE POST-STORM ANALYSIS IS COMPLETE.

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HURRICANE SPECIALIST UNIT