Technology, Discovery & Innovation NewsFactor Sites:     Enterprise Security Today     CRM Daily     Business Report     Sci-Tech Today  
This ad will display for the next 20 seconds. Click for more information, or
Home Computing Digital Life Discovery Space More Topics...
Average Rating:
Rate this article:  
Right Mix of Conditions Brewed Tornado Outbreak
Right Mix of Conditions Brewed Tornado Outbreak

By Seth Borenstein
April 30, 2014 12:23PM

Bookmark and Share
A perfect storm of weather conditions created the killer tornadoes. Dry, cool air swooped off California's Sierra Madre and southern Rocky mountains. That sat on top warm, moist air from the Gulf of Mexico. And the jet stream brought in wind shear, which helps provide rotation. Cook that all with daytime heating and it makes a tornado outbreak.

Related Topics

Jet Stream

Weather from nearly all parts of the country combined to brew this week's killer tornadoes. To get tornadoes -- especially the big deadly kind -- everything has to come together in just the right way and it hadn't been doing that lately, said meteorologist Greg Carbin at the Storm Prediction Center in Norman, Okla.

Until the weekend, there had been relatively few significant twisters this year across the United States -- just 20 and no deaths.

But the conditions were right on Sunday in the central U.S.

Dry, cool air swooped off California's Sierra Madre and southern Rocky mountains. That sat on top warm, moist air from the Gulf of Mexico, creating thunderstorms. And the jet stream brought in wind shear, which helps provide rotation.

Cook that all with daytime heating and it makes a tornado outbreak, meteorologists say.

What makes this outbreak unusual is that it is essentially stalled, Carbin said. The slow-moving jet stream plunging from the Northwest is keeping a large, high-pressure system off the East Coast. And that's preventing the tornado-prone weather from moving east and weakening.

That could mean more storms in across the South, maybe into Wednesday.

In the past few decades, the U.S. has averaged about 1,250 tornadoes a year. Last year, which also had a slow start, ended with 908 tornadoes that killed 55 people.

"You expect to see one or two outbreaks like this each spring and certainly we were due," said Jeff Masters, meteorology director of the private Weather Underground.

© 2014 Associated Press under contract with NewsEdge. All rights reserved.

Tell Us What You Think

Name: is the market and technology leader in Software-as-a-Service. Its award-winning CRM solution helps 82,400 customers worldwide manage and share business information over the Internet. Experience CRM success. Click here for a FREE 30-day trial.

1.   Beer-Loving Bugs Swarm in Midwest
2.   Bats Navigate Using Polarized Light
3.   Study: Beef Pollutes More than Pork
4.   Globe on Fire: June Had Record Heat
5.   Shark Sightings Off Cape Cod a Boon

Product Information and Resources for Technology You Can Use To Boost Your Business

Network Security Spotlight
Researchers Working To Fix Tor Security Exploit
Developers for the Tor privacy browser are scrambling to fix a bug revealed Monday that researchers say could allow hackers, or government surveillance agencies, to track users online.
Wall Street Journal Hacked Again
Hacked again. That’s the story at the Wall Street Journal this week as the newspaper reports that the computer systems housing some of its news graphics were breached. Customers not affected -- yet.
Dropbox for Business Beefs Up Security
Dropbox is upping its game for business users. The cloud-based storage and sharing company has rolled out new security, search and other features to boost its appeal for businesses.

Enterprise Hardware Spotlight
Watson Gets His First Customer Service Gig
Since appearing on Jeopardy, IBM's Watson supercomputer has been making a living using his super-intelligent knowledge base for business verticals. Now, Watson's been hired for his first customer service job.
Tablet Giants Apple and Samsung Feel the Heat
When a company saturates its home market with a once-hot product, expect it to pump up efforts elsewhere. Apple, for its part, is now pushing iPads to big corporations and the enterprise market.
Microsoft Makes Design Central to Its Future
Over the last four years, Microsoft has doubled the number of designers it employs, putting a priority on fashioning devices that work around people's lives -- and that are attractive and cool.

Mobile Technology Spotlight
T-Mobile Calls 'BS' on AT&T's New Promotion
While Verizon Wireless is moving to throttle bandwidth hogs, a scrappy T-Mobile is taking on the giants with a limited-time promotion it hopes will drive up the churn rates of its wireless rivals.
Microsoft Update to Windows Phone 8.1 Already Coming
An update to Windows Phone 8.1 is on the way just weeks after the release of the product itself. Microsoft has begun detailing some of the update features to phone manufacturers.
Stanford Researchers Report Battery Breakthrough
Stanford researchers have found a way to use lithium in a battery's anode, a breakthrough that could triple capacity and has been described as the "holy grail of battery science."

Sci-Tech Today
Home/Top News | Computing | Digital Life | Discovery | Space | Innovation | Health | Science News
NewsFactor Network Enterprise I.T. Sites
NewsFactor Technology News | Enterprise Security Today | CRM Daily

NewsFactor Business and Innovation Sites
Sci-Tech Today | NewsFactor Business Report

NewsFactor Services
FreeNewsFeed | Free Newsletters

About NewsFactor Network | How To Contact Us | Article Reprints | Careers @ NewsFactor | Services for PR Pros | Top Tech Wire | How To Advertise

Privacy Policy | Terms of Service
© Copyright 2000-2014 NewsFactor Network. All rights reserved. Article rating technology by Blogowogo. Member of Accuserve Ad Network.