* WHAT...Heat index values up to 100. Overnight temperatures
remaining warm in the lower 70s.

* WHERE...Portions of central, east central, south central,
southeast, southwest, and west central Minnesota and northwest and
west central Wisconsin.

* WHEN...Until 9 PM CDT Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses. Prolonged heat waves lead to cumulative heat stress for
those who cannot adequately cool down and recover each night.
Cumulative heat stress significantly increases the risk of heat
exhaustion and heat stroke as time goes on.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

* WHAT...Heat index values up to 100.

* WHERE...Faribault, Freeborn, Martin, Steele, and Waseca Counties.

* WHEN...Until 9 PM CDT Thursday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

* 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...East central, central, west central, southeast, north
central, and northwest Minnesota.

* WHEN...Until 11 AM CDT Friday.

* 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...Very heavy smoke is expected across the
Arrowhead today, as large wildfires continue to spread. Hot
temperatures, when combined with the air pollution, will
exacerbate health impacts. A frontal boundary will then spread
heavy smoke further south this evening into Wednesday morning, as
it moves across northern and central Minnesota. The onset of
smoke will be rapid. This boundary eventually passes through the
Twin Cities and into southeastern Minnesota on Wednesday or
Wednesday evening, bringing heavy smoke even further south.
Additional rounds of heavy smoke are possible from Thursday
through Friday morning across the alert area.

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.