Hurricanes & Tropical Storms - April 2011


NCDC added Alaska climate divisions to its nClimDiv dataset on Friday, March 6, 2015, coincident with the release of the February 2015 monthly monitoring report. For more information on this data, please visit the Alaska Climate Divisions FAQ.


Note: This report catalogs recent tropical cyclones and places each basin's tropical cyclone activity in a climate-scale context. It is not updated in real time. Users seeking real time status and forecasts of tropical cyclones should visit The National Hurricane Center.

Australian Basin

Errol Track
Tropical Storm Errol Forecast Track


Safir Simpson Color Legend for Track Map from Unisys
Saffir-Simpson Scale Color Legend
Tropical Cyclone Summary
Tropical Cyclone Errol
Cyclogenesis Date 04/15
Cyclolysis Date 04/18
Highest Saffir-Simpson Category TS
Maximum 6-hr Sustained Wind 63 mph (55 kt or 102 km/h)
Min Pressure 986 mbar
Accumulated Cyclone Energy (ACE*) Index (kt2) 2.6275 x 104
Landfall Information (date, location and sustained winds)
Deaths 0
*The (ACE) Index calculations are based on preliminary data.

Citing This Report

NOAA National Climatic Data Center, State of the Climate: Hurricanes & Tropical Storms for April 2011, published online May 2011, retrieved on May 22, 2015 from http://www.ncdc.noaa.gov/sotc/tropical-cyclones/201104.