Weather

1
Weather Climatein Seattle

• How weather changes over time and distance

2
Questions
What kind of weather do we have in Seattle?What
kind of weather DON'T we have in Seattle?
3
Questions
What kind of weather do we have in
Seattle?Clouds, Rain, Sun (summer)What kind of
weather DON'T we have in Seattle?Hurricanes,
Lightning, Snow?
4
Clouds in Washington State

• Where does rain come from?
• What do clouds look like?
• Does it rain from all clouds?

5
How do clouds form?

• Clouds require three ingredients
• Moisture
• Rising Air
• Dust/Stuff
• As air rises, it cools and expands
• Liquid water droplets condense to make clouds
  above the ground

6
Stratus Cloud

• Does it rain from stratus clouds?

• How do stratus clouds form?

• Stratus clouds are close to the ground and are
  made of liquid droplets

Nimbo-stratus cloud

• Air pushed upward over a large area

7
Cirrus Cloud

• Cirrus clouds occur high in the atmosphere
• Cirrus clouds are made of ice

• Wind blows the cirrus clouds into streaks

8
Cumulus Cloud

• Does it rain from cumulus clouds?

9
Cumulonimbus Cloud
What is this?
10
Lightning

• When do we have lightning in Seattle?

• What sound does lightning make?

• What should you do if you hear thunder?

11
Supercell thunderstorm

• Do we see thunderstorms like this in Seattle?

12
Tornado
13
Rainbow

• When do we see rainbows?

14
Fog

• Wind blows fog in from Puget Sound

Warm air
Cold water

• Air picks up moisture from water

15
Washington State Precipitation Climatology
16
Washington State Topography
17
Two Maps Together
18
Rain Shadow
How do clouds form? Cloud in a Bottle
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Air Masses
20
Air Masses
1) Why is Seattle cloudier than Colorado?2) Why
is Chicago colder than Seattle?3) Why doesn't
Seattle get hurricanes?
21
Questions?
Thank You!