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…
Low Tornado Numbers and Low Tornado Deaths, May 2012-April 2013
Category: U.S. Severe Weather Blog
The Tornado “Drought” of 2012
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…
No Tornado Deaths in May 2012
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…
Bi-monthly Tornado Counts and ENSO Phase Strength
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…
April 4-5, 2011 Severe Weather
A review of this past week’s widespread severe weather event…
10 May 2010 tornado outbreak
Information on the 10 May 2010 tornado outbreak in Oklahoma and Kansas
Some brief notes on the 24 April 2010 long-track tornado
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…
Can tornado activity through April portend May?
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…
One tornado in February 2010 (UPDATED)
A late tornado report has been received, so there’s now 1 tornado in the database for February 2010.
U.S. tornado droughts since 1990
How does the 23-day tornado drought in November 2009 compare with other years?