* WHAT...Temperatures as low as 33 will result in frost formation.
* WHERE...In Minnesota, Northern Aitkin, North Itasca, South Itasca, and Northern Cook and Lake Counties. In Wisconsin, Ashland, Bayfield, Douglas, Iron, Sawyer, and Washburn Counties.
* WHEN...From midnight Thursday Night to 9 AM CDT Friday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
* ADDITIONAL DETAILS...Counties along the South Shore are mainly expected to see frost development a few miles or more away from Lake Superior shorelines and in Bayfield County south of US Highway 2.