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“Hyperactive” Atlantic hurricane records broken

Last night we had two Atlantic storms with 150+ mph winds simultaneously. (Irma and Jose)  This was the first time this has occurred in Atlantic Ocean history.

We also have three category 2 or stronger hurricanes in the Atlantic simultaneously. (Irma, Jose, and Katia)  The last time that this happened was in 1893.

These three hurricanes combined to set a new record for the highest single-day Accumulated Cyclone Energy (ACE index) yesterday in Atlantic Ocean history with 14.37.  The ACE index sums up the amount of power being generated in active tropical cyclones.

​From Brian Brettschneider (@Climatologist49 on Twitter)

 

Hurricane Irma is already #4 on the all-time list for single-storm Accumulated Cyclone Energy (ACE) behind 2003’s Isabel and 2004’s Ivan.  It should pass Isabel to reach the #3 position on Sunday, and could approach Ivan on Monday.  The #1 ACE index record is held by the San Ciriaco Hurricane of 1899.


Tim Armstrong
Meteorologist & Climate Program Leader
National Weather Service Wilmington, NC

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