Quantcast

2014 tornado season so far - KTBS.com - Shreveport, LA News, Weather and Sports

2014 tornado season so far

Posted: Updated:
Fig. 1  Polar Vortex during the early Spring of 2014 Fig. 1 Polar Vortex during the early Spring of 2014
Fig.2  Preliminary Tornado Count as of 4/28/14 Fig.2 Preliminary Tornado Count as of 4/28/14
Tornado Reports (Red) on 4/28/14 Tornado Reports (Red) on 4/28/14
Weather pattern on 4/28/14 Weather pattern on 4/28/14
The Polar Vortex kept Tornado and Dixie Alleys much cooler this early Spring compared to normal (Fig. 1).  As a result, with the lower instability and a Winter-like weather pattern, tornadoes were kept at bay.  In fact, the tornado count through late last week was down to only a fourth of the 2005-2013 January through April average (Fig. 2).  In other words, as of the 27th, there had only been about 152 tornadoes compared to the normal of nearly 500.

Turn the calendar page one day to April 28th and all of a sudden we have a tornado outbreak!  An additional 90 tornadoes (Fig. 3) were added to the April 27th total.  This brought us up to 250 which is about half the norm (Fig. 2...gray boxed number of 509).  The latest outbreak doesn't quite get Tornado and Dixie Alleys caught up, but there's plenty of damage, loss of life and injuries to contend with!

A major weather pattern change can be to blame the latest tornado outbreak (Fig. 4).  The Polar Vortex stayed up in Canada this past week and a very amplified west to east jet stream pattern evolved.  A powerful, negatively tilted storm system (tilted toward the west) developed out of this and slowly moved into the plains by last Saturday.  As a result, strong jet dynamics (providing atmospheric lift), instability (cold upper atmosphere over warm lower), wind shear (increasing wind speed and changing direction as you ascend in the atmosphere...separates the up and down drafts of storms...makes storms stronger), heat and moisture (from the Gulf of Mexico) plus a dry line (boundary between dry and moist air...brown line in Fig. 4) to get the storms going made for the largest tornado outbreak in the last few years.

 
  • KTBS 3 News Tips

    Send your news tip or story idea to the KTBS 3 Newsroom.  Enter your email address below to get started.

    * denotes required fields
    We're sorry, but only one entry is allowed per person.
    Thank you for your continued interest.

    Thank you for your submission to KTBS 3 News.  A member of our staff may contact you for more information.

  • Local NewsMore>>

  • Caddo Sheriff's officials searching for suspects who robbed restaurant at gunpoint

    Caddo Sheriff's officials searching for suspects who robbed restaurant at gunpoint

    Saturday, July 26 2014 8:27 AM EDT2014-07-26 12:27:40 GMT
    Caddo Parish Sheriff's officials are searching for two men who allegedly robbed a north Shreveport restaurant early Saturday morning.
    Caddo Parish Sheriff's officials are searching for two men who allegedly robbed a north Shreveport restaurant early Saturday morning.
  • One person dead in boat accident on Lake Pontchartrain

    One person dead in boat accident on Lake Pontchartrain

    Saturday, July 26 2014 7:40 AM EDT2014-07-26 11:40:37 GMT
    A sailboat accident claimed the life of an unidentified man in his early 20's Friday evening.According to the St. Tammany Sheriff's Office, a small sailboat flipped over in Lake Pontchartrain near the mouth of Tchefuncte River around 5 p.m.Another person who was thrown from the boat was rescued, said the sheriff's office.Around 8:30 p.m., St. Tammany Sheriff's Office confirmed a body had been found.
    A sailboat accident claimed the life of an unidentified man in his early 20's Friday evening.According to the St. Tammany Sheriff's Office, a small sailboat flipped over in Lake Pontchartrain near the mouth of Tchefuncte River around 5 p.m.Another person who was thrown from the boat was rescued, said the sheriff's office.Around 8:30 p.m., St. Tammany Sheriff's Office confirmed a body had been found.
  • Officials: Counterfeit money passed at local businesses in Hope, AR

    Officials: Counterfeit money passed at local businesses in Hope, AR

    Saturday, July 26 2014 7:16 AM EDT2014-07-26 11:16:33 GMT
    A rash of "funny money" being passed around town.That's what officials in Hope, AR say they're dealing with right now, and they want residents to be aware.“While certainly the types of incidents reported to HPD that involve counterfeit currency do not pose a serious threat to our local economy, none the less, over the past two months, HPD has seen a significant rise in the cases reported,” said Hope Police Chief JR Wilson.Officials say, over a 41 day period, police seized 16 counterfeit bills...
    A rash of "funny money" being passed around town.That's what officials in Hope, AR say they're dealing with right now, and they want residents to be aware.“While certainly the types of incidents reported to HPD that involve counterfeit currency do not pose a serious threat to our local economy, none the less, over the past two months, HPD has seen a significant rise in the cases reported,” said Hope Police Chief JR Wilson.Officials say, over a 41 day period, police seized 16 counterfeit bills...
Share Your Images
Powered by WorldNow
    Powered by WorldNow
    All content © Copyright 2000 - 2014 Worldnow and KTBS. All Rights Reserved. For more information on this site, please read our Privacy Policy and Terms of Service.
    Advertising | EEO Public File | KTBS 3 Public File | KPXJ 21 Public File