The National Weather Service in Birmingham has issued a Frost Advisory for tonight.

You can read the text of the advisory below:

...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM CDT WEDNESDAY...

* WHAT...Temperatures will be in the low to mid 30s across the
  north, resulting in areas of frost. Colder valleys may reach the
  freezing mark, but a widespread freeze is not expected at this
  time.

* WHERE...Portions of central, east central, northeast,
  northwest and west central Alabama.

* WHEN...From 3 AM to 8 AM CDT Wednesday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.
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