F
Temperature scale where water freezes at 32°F and boils at 212°F.
Flooding that happens within about 6 hours of rain. It's usually the result of intense local rain and water levels rise rapidly.
When water covers land that is normally dry.
Flat or nearly flat land subject to flooding that is next to a stream or river.
Warm, dry wind generally blowing downslope on the lee side (sheltered from the wind) of a mountain.
The boundary between air masses with different characteristics. See also:
Soft white ice crystals or frozen dewdrops on objects near the ground. It forms when the surface temperature falls below freezing point.
Violent, rotating column of air extending toward the ground from the base of a cumulus or cumulonimbus cloud.
A funnel cloud that reaches the ground is called a tornado if over land, and a waterspout if over water.