Thoughts from Severe Weather Awareness Week

This week has been Severe Weather Awareness Week in Alabama. The purpose of the exercise is for all Alabamians to review their severe weather safety rules.

There were a record 77 tornadoes in Alabama in 2005. This easily beat the old record of 56 tornadoes set in 2005. There have only been seven years with more than fifty tornadoes in Alabama. Those years were 1957, 1973, 1974, 1998, 2001, 2004 and 2005.

But the record is a bit of a special case. You see, 49 of the 77 tornadoes occurred in conjunction with landaflling tropical weather systems. There were five tornado outbreaks in the state this past year. An outbreak is defined as five or more tornadoes. Those outbreaks occurred on April 30th, July 6th (Tropical Storm Cindy), August 28-29 (Hurricane Katrina), September 25 (Hurricane Rita) and November 28th.

It certainly seems there are more tornadoes these days. Nationwide, tornado counts are up. This is not a factor of global warning or weather gone wild. It is a factor of better verification. National Weather Service meteorologists have more opportunities and better ways to do post storm investigations. Doppler radar signatures are more accurate at pinpointing where potential tornado tracks may have occurred.

The top five Alabama counties for tornadoes since 1950: Baldwin (83), Mobile (70), Jefferson (69), Cullman (51), Tuscaloosa (50), Take a moment to review your personal tornado safety plan. Know basic tornado safety rules and be prepared to act when severe weather threatens.
Posted by  
on February 25, 2006, 10:40 pm
Just a thought...has anyone thought how bad our draught would have been last year without the tropical systems? We seemed to have no rain at all from May-Oct. without the help from them.

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Posted by  
on February 26, 2006, 2:06 am
While the Mobile/Baldwin tornadoes are understandable because of hurricanes, is there any possible explanation for the high number of tornadoes that pass through Tuscaloosa, Cullman and Jefferson Counties?

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Posted by   www
on February 26, 2006, 6:17 am
It has a lot to do with population density, Julie. There's just more folks there to view them, as opposed to the more rural counties.

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Posted by Chris M.  
on February 26, 2006, 7:32 am
Might be some of it but I think it's mostly that we are on the edge of tornado alley. Most of the tornado "heads up" reports come from the west as they are coming our way from yep, rural areas. Technology catches a lot of the tornadoes people never ever see in yep, rural areas. Tornadoes are seen with more than just direct human interaction. Just because a tornado rips a path in a rural county or area does it mean it doesn't get noticed?

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Posted by   www
on February 26, 2006, 9:24 am
I would like to see graphics for additional years, such as this one by Brian Peters,
http://www.srh.noaa.gov/bmx/aware/AL_Tornado_2002_map_lrg.gif

Graphics give a much better idea of the frequency and distribution of tornadoes than does just a listing of the same information.
Aside from better reporting of tornadoes in general and a recent skew of numbers due to tropical systems, I believe there is a case to be made for a distinct and historic "tornado alley" across north central Alabama.
True, this graphic is for only one year, but I think total numbers over a longer period might indicate more tornado activity in certain sections of the state.
I'm obviously not a met and this is just my opinion. I'd like to know if we do have our own mini tornado alley.


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