* WHAT...Temperatures of 33 to 36 will result in frost formation.
* WHERE...Spotsylvania, Central and Southeast Prince William/Manassas/Manassas Park, Northern Fauquier, Northwest Prince William, Stafford, and Rappahannock Counties.
* WHEN...From midnight tonight to 9 AM EST Sunday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
* ADDITIONAL DETAILS...If winds remain elevated more than expected, frost may be more patchy in nature.