Transcript Notes Air Masses and Fronts

Severe Weather (Storms)
Air Masses – large body of air with
similar humidity and temperature.
Classified by surface over which they form. Maritime form over water
while Continental forms over continents.
Warm front forms when warm air
comes into an area of cold air.
Gradual movement and very low slope producing stratus clouds
and light to moderate precipitation.
Cold Front forms when cold air comes
into an area of warm air.
Faster moving and much steeper, forceful cloud formation leading to
high winds a heavy precipitation.
Forecast the weather
along the East Coast.
Isobars show pressure gradient and
wind direction.
Tornado formation
High pressure air collides with
low pressure air.
Cumulonimbus clouds form by
increased updraft.
Tornado Formation Continued.
Mesocyclone forms by vortex
movement and tornado forms.
WOW!
Tornadoes are measured by Fujita
Scale.
Does Montana have Tornadoes?
The ingredients are all there.
Severe Weather by the Numbers