Weather SCOTT HANDEL National Oceanic and Atmospheric Administration Photo: Courtesy NOAA
Why Become A Meteorologist? • Weather Affects Everyone! • Being Able to Predict the Weather Saves Lives!!!
Outline • Clouds • Thunderstorms • Hail/Lightning • Tornadoes • Hurricanes • Tsunamis (Time Permitting)
Name That Cloud Cumulus
Name That Cloud Stratus
Name That Cloud Cirrus
Name That Cloud Stratus (Fog)
Name That Cloud Cumulonimbus
How does Hail Form? Strong updrafts of warm air and down-drafts of cold air are in a thunderstorm. If a water droplet is picked up by the updrafts...it can be carried well above the freezing level. With temperatures below 32°F...our water droplet freezes. As the frozen droplet begins to fall...carried by cold downdrafts...it may thaw as it moves into warmer air toward the bottom of the thunderstorm But...it may also get picked up again by another updraft...carrying it back into very cold air and re-freezing it. With each trip above and below the freezing level our frozen droplet adds another layer of ice. Finally...our frozen water droplet...with many layers of ice - much like the rings in a tree...falls to the ground - as hail!
How Lightning Forms The connection is made and the protons rush up to meet the electrons. It is at that point that we see lightning and hear thunder. A bolt of lightning heats the air along its path causing it to expand rapidly. Thunder is the sound caused by rapidly expanding air.
Tornadoes What is a tornado? "a violently rotating column of air, pendant from a cumuliform cloud or underneath a cumuliform cloud, and often (but not always) visible as a funnel cloud."
Are Winds Faster In the Strongest Hurricane or In the Strongest Tornado?