Weather Alert in Minnesota
Air Quality Alert issued May 31 at 10:44AM CDT by NWS Duluth MN
AREAS AFFECTED: North St. Louis; Northern Cook/Northern Lake; Central St. Louis; Southern Lake/North Shore; Southern Cook/North Shore; Carlton/South St. Louis
DESCRIPTION: MNZ011-012-019>021-037-022300- Carlton/South St. Louis-Central St. Louis-North St. Louis-Northern Cook/Northern Lake-Southern Cook/North Shore-Southern Lake/North Shore- Including the tribal nations of Fond du Lac and Grand Portage Including the cities of Duluth, Ely, Hibbing, and Two Harbors ...AIR QUALITY ALERT NOW IN EFFECT FROM NOON CDT SUNDAY TO 6 PM CDT MONDAY... * 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...Northeastern Minnesota including Cook, Lake, St. Louis, and Carlton Counties. * WHEN...From Noon CDT Sunday until 6 PM 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...Smoke that was lingering over northeastern Minnesota has cleared. The air quality in the Arrowhead will remain in the Yellow (Moderate) category, which is below air quality alert criteria on Saturday. However more smoke is expected Sunday afternoon and will linger into Monday. People should consider moving outdoor activities to Saturday and plan on limiting outdoor exertion Sunday and Monday. Additional smoke events are possible into next week, and this alert may need to be extended.
INSTRUCTION: 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.
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Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
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