Full Notification

* WHAT...Sub-freezing temperatures around 29 to 32 degrees expected.

* WHERE...In Maryland, Frederick MD, Carroll, Northern Baltimore and Northwest Harford Counties. In Virginia, Clarke and Western Loudoun Counties. In West Virginia, Jefferson County.

* WHEN...From 2 AM to 9 AM EDT Wednesday.

* IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

* AFFECTED AREAS: FREDERICK ... CARROLL ... NORTHERN BALTIMORE ... NORTHWEST HARFORD ... CLARKE ... WESTERN LOUDOUN ... JEFFERSON

Instructions:

Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing.