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Frost Advisory issued May 12 at 9:54PM CDT until May 13 at 8:00AM CDT by NWS Duluth MN * WHAT...Temperatures as low as 37 will result in frost formation. * WHERE...Koochiching, North Itasca, Central St. Louis, North St. Louis, and Northern Cook and Lake Counties. This includes the Tribal Lands of the Bois Forte Band, Nett Lake, Lake Vermilion and, Deer Creek areas. Recreation spots such as Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...From 2 AM to 8 AM CDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. Take steps now to protect tender plants from the cold.

Air Quality Alert issued May 12 at 11:02AM CDT by NWS Duluth MN * WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Red or Unhealthy category. * WHERE...All of northeastern and north central Minnesota. * WHEN...Until 8AM CDT Monday. * IMPACTS...Some members of the general public may experience health effects. Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, may experience health effects. * ADDITIONAL DETAILS...A band of very heavy smoke from wildfires in northeast British Columbia has moved into northern Minnesota and will sweep south across the state on Sunday behind a cold front. The smoke will continue to move across northeastern and north central Minnesota this afternoon with maximum smoke impacts expected Sunday afternoon and evening but will linger overnight. Areas along Lake Superior may have some local clearing from the smoke Sunday afternoon before smoke settles again overnight. Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should avoid prolonged or heavy exertion. The general public should limit prolonged or heavy exertion. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.