* WHAT...Temperatures as low as 34 will result in frost formation.
* WHERE...Koochiching, North Itasca, South Itasca, Central St. Louis, North St. Louis, and Northern Cook and Lake Counties.
* WHEN...From 1 AM to 8 AM CDT Wednesday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
* ADDITIONAL DETAILS...The best chances for frost will be in inland areas away from Lake Superior.