NOAA’s National Weather
Service
Let’s Get Started!
Something you shouldn’t do
Highway Overpasses
Class Goals
Wall Cloud & Shelf Cloud
Basic Spotter Rules
Hazards to report
Reports
Hailstone
Hail Reporting
Estimating Wind Speed
Before you submit your
report:
Reports
Thunderstorm
Structure
…where wall clouds and shelf clouds are found
…when you see a shelf cloud, you’re thinking straight-line winds and maybe some
large hail and heavy rains
Quick Storm Introduction
Thunderstorms
Downdraft - Downburst
Shelf Cloud Formation
Tornadic Supercell Tstm
Tornadic Supercell Tstm
Multi-cell Thunderstorm
Thunderstorms
Downburst Winds
Shelf Clouds
Downburst Winds
Shelf Clouds
Shelf Clouds
Downburst!
Bow Echo – downburst!
Bow Echo – downburst!
Bow Echo – downburst!
Downburst Winds
Break Time!
10 minutes
Tornadoes & Wall Clouds
Rotating Wall Clouds
Thunderstorms
Tornado
Hard-to-See Tornado
Wall Clouds
Wall Clouds vs. Shelf Clouds
Updraft & Downdraft
Wall Clouds
Wall Clouds
Wall Clouds
Wall Clouds
Wall Clouds
Wall Clouds
Wall Clouds
Wall Cloud Attachment - Tail
Cloud
Wall Cloud Becomes Shelf
Cloud
Funnel Clouds
Quiz Time
Quiz Time (continued)
Tornadoes across the state
Relative Frequency of Events
2004 Wisconsin Tornadoes
Waupun Supercell 6-23-04
DeForest Tornado May 23,
2004
Tornado
Tornadoes
Tornadoes
Tornadic Supercell Tstm
Supercell Wall Cloud
Tornadoes
Tornadoes
Supercell & Tornado!
Tornadoes
Mesocyclone
Oakfield Tornado
Tornado
Tornado
Tornado
Tornadoes
Common Deceivers