Freeze
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- A freeze is when the surface air temperature is expected to be 32°F or below over a widespread area for a climatologically significant period of time. Use of the term is usually restricted to advective situations or to occasions when wind or other conditions prevent frost. "Killing" may be used during the growing season when the temperature is expected to be low enough for a sufficient duration to kill all but the hardiest herbaceous crops.
NOAA National Weather Service - Cite This Source - This Definition - EPCTG, Freezing Drizzle Advisory, Freezing Rain Advisory, Frost Advisory, XCPT, XPC