Weather, climate extremes punctuate warm, very wet April in U.S.

April U.S. temperature ranked 39th warmest, precipitation ranked 10th wettest

May 9, 2011

Historic flooding, a record-breaking tornado outbreak and devastating wildfire activity made April 2011 a month of historic climate extremes across much of the United States, according to scientists at NOAA’s National Climatic Data Center (NCDC) in Asheville, N.C.

The average U.S. temperature in April was 52.9 degrees F, which is 0.9 degrees F above the long-term (1901-2000) average. April precipitation was 0.7 inches above the long-term average, the 10th wettest April on record. This monthly analysis, based on records dating back to 1895, is part of the suite of climate services NOAA provides.

April 2011 temperature "divisional rank" maps.

April 2011 temperature "divisional rank" maps are available at the NCDC site.

High resolution (Credit: NOAA)

U.S. Climate Highlights – April 

April 2011 precipitation "divisional rank" map.

April 2011 precipitation "divisional rank" map are available at the NCDC site.

High resolution (Credit: NOAA)

U.S. Climate Highlights
February – April

Previous 12 months

Year-to-Date Period

NCDC’s State of the Climate analyses, which assess the current state of the climate, are released soon after the end of each month. They are based on preliminary data, which are subject to revision. Additional quality control is applied to the data when late reports are received several weeks after the end of the month and as new scientific methods improve NCDC’s processing algorithms.

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