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Category: U.S. Severe Weather Blog

Low Tornado Numbers and Low Tornado Deaths, May 2012-April 2013

Posted in U.S. Severe Weather Blog on May 1, 2013 by Harold Brooks.

Updated 10 May 2013 to add new information from April 2013 Updated 2 May 2013 to correct typo on date of previous low tornado count The 12-month period from May 2012 to April 2013 was…

Tags: deaths, severe storms, tornadoes

The Tornado “Drought” of 2012

Posted in U.S. Severe Weather Blog on August 2, 2012 by Harold Brooks.

UPDATE (14-Aug-2012): Graph corrected to indicate 2006 as previous 15 Apr-31 Jul minimum. The 2012 tornado season in the United States got off to a quick start with well-above average numbers in January, February, and…

Tags: climatology, tornadoes

No Tornado Deaths in May 2012

Posted in U.S. Severe Weather Blog on June 7, 2012 by Harold Brooks.

In May 2012, there were no tornado deaths in the United States. How unusual was that? We can look at the record of tornado deaths, discussed here, dating back to 1875. The last time there…

Tags: deaths, tornadoes

Bi-monthly Tornado Counts and ENSO Phase Strength

Posted in U.S. Severe Weather Blog on September 28, 2011 by Greg Carbin.

The charts below illustrate that occasional weak cool-season links may occur between the phase strength of the EL Niño Southern Oscillation (ENSO phase strength) and EF1 to EF5 tornado reports for bi-monthly periods from 1950…

Tags: None

April 4-5, 2011 Severe Weather

Posted in U.S. Severe Weather Blog on April 6, 2011 by Greg Carbin.

A review of this past week’s widespread severe weather event…

Tags: None

10 May 2010 tornado outbreak

Posted in U.S. Severe Weather Blog on May 11, 2010 by Harold Brooks.

Information on the 10 May 2010 tornado outbreak in Oklahoma and Kansas

Tags: deaths, tornadoes, vortex2

Some brief notes on the 24 April 2010 long-track tornado

Posted in U.S. Severe Weather Blog on April 26, 2010 by Harold Brooks.

Preliminary information on the long-track tornado that went from eastern Louisiana across much of Mississippi. 1. It had a path length of at least 97 miles. Over the last 40 years, we’ve averaged about one…

Tags: records, tornadoes

Can tornado activity through April portend May?

Posted in U.S. Severe Weather Blog on April 16, 2010 by Greg Carbin.
tornado chart

Short answer: apparently not! Longer answer follows. Few tornadoes have occurred to date in 2010, especially when compared to very active recent years such as 2008. The adjusted annual tornado trend shown below indicates that…

Tags: climatology, tornadoes

One tornado in February 2010 (UPDATED)

Posted in U.S. Severe Weather Blog on March 1, 2010 by Harold Brooks.

A late tornado report has been received, so there’s now 1 tornado in the database for February 2010.

Tags: climatology, records, tornadoes

U.S. tornado droughts since 1990

Posted in U.S. Severe Weather Blog on December 1, 2009 by Greg Carbin.
U.S. Tornado Droughts (1990-2009)

How does the 23-day tornado drought in November 2009 compare with other years?

Tags: None

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