tornadoes
Download
Skip this Video
Download Presentation
Tornadoes

Loading in 2 Seconds...

play fullscreen
1 / 13

Tornadoes - PowerPoint PPT Presentation


  • 128 Views
  • Uploaded on

Tornadoes. Tornado Formation. Severe “Super Cell” Thunderstorm (1% spawn tornadoes) Often occur along cold fronts and move to NE Strong updrafts Wind shear (change in direction or strength of winds from top to bottom of storm). Funnel Cloud v. Tornado. Tornado. Funnel Cloud.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Tornadoes' - shauna


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
tornado formation
Tornado Formation
  • Severe “Super Cell” Thunderstorm (1% spawn tornadoes)
  • Often occur along cold fronts and move to NE
  • Strong updrafts
  • Wind shear (change in direction or strength of winds from top to bottom of storm)
funnel cloud v tornado
Funnel Cloud v. Tornado

Tornado

Funnel Cloud

world tornado geography
World Tornado Geography
  • USA: 90%+ of all tornadoes
usa tornado geography
USA Tornado Geography
  • Every state!
  • Tornado Alley (TX, OK, KS, NE)
usa tornado season
USA Tornado Season

Most common when temperature gradient in central U.S. is greatest.

usa tornado occurrence
USA Tornado Occurrence
  • About 800-1000 tornadoes spotted each year.
tornado classification
Tornado Classification
  • Fujita F-scale
    • F0 (winds < 120 mph) to F5 (winds 200-300+ mph)
    • based on rotational wind speed and damage done
  • Size: Tornadoes generally < 1/4 mile wide (damage path only 150 ft.)
deadliest tornado
Deadliest Tornado
  • Tri-state tornado outbreak of March 18, 1925
  • Kills 689 people in Missouri, Illinois & Indiana

Largest Tornado Outbreak

  • April 3-4, 1974 Super-Outbreak
  • 148 tornadoes overnight across 11 states
tornado forecasting
Tornado Forecasting
  • NEXRAD doppler radar (WSR-88D)
    • 138 stations across the USA
  • Intensity of storm noted by amount of reflection off rain, hail, and ice crystals.
  • Hook cloud is an indicator.

Orlando, Florida

tornado indicators
Tornado Indicators
  • What to look for….
ad