* WHAT...Temperatures as low as 34 will result in frost formation.
* WHERE...Portions of central and northern West Virginia.
* WHEN...From 3 AM to 9 AM EDT Wednesday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
* ADDITIONAL DETAILS...Isolated sub-freezing temperatures could occur in the low-lying valleys of the northern lowlands of West Virginia early Wednesday morning.