From NWS:
…FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM CDT SUNDAY…
The National Weather Service in Paducah has issued a Freeze
Warning, which is in effect from 3 AM to 9 AM CDT Sunday.
* TEMPERATURE…At or below 32 degrees for a few hours.
* IMPACTS…The sub-freezing air will damage or kill unprotected
sensitive vegetation.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.