At 1:37 p.m. on Thursday, the National Weather Service issued an updated freeze warning valid for Friday between 2 a.m. and 9 a.m. for Southern Erie and Crawford County.

"Sub-freezing temperatures as low as 29 degrees expected," adds the weather service. "Freezing temperatures are most likely east of Interstate 79. Even where temperatures don't dip to freezing, frost is expected."

"Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing," comments the weather service. "Take steps now to protect tender plants from the cold."

Freeze watch or warning - this is what it means

Freeze warnings are issued from May to October (but can be extended if necessary), when low temperatures are expected to be 29-32 degrees. If there is a

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