Weather Alert in Minnesota
Air Quality Alert issued July 25 at 11:53AM CDT by NWS Twin Cities/Chanhassen MN
AREAS AFFECTED: Douglas; Todd; Morrison; Mille Lacs; Kanabec; Pope; Stearns; Benton; Sherburne; Isanti; Chisago; Kandiyohi; Meeker; Wright; Hennepin; Anoka; Ramsey; Washington; McLeod; Sibley; Carver; Scott; Dakota; Le Sueur; Rice; Goodhue
DESCRIPTION: * 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...Central Minnesota. * WHEN...Until 11 PM CDT tonight. * 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 heavy smoke from wildfires in Saskatchewan and Manitoba will continue to impact air quality across east central and northeast Minnesota on Friday. Smoke has exited the southern and western portions of the state and air quality has improved in these regions. Therefore, the air quality alert has been cancelled for these areas of the state. Smoke will linger across the alert area Friday afternoon, and then southerly winds are expected to push the smoke back to the north. The heaviest smoke is expected across east central MN, and air quality in the Red (Unhealthy) category is expected. Air quality should improve gradually beginning Friday afternoon, with improvement in fine particle levels below the alert threshold expected by the end of Friday.
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 is Condensation?
Home - Education - Precipitation - Condensation
Next Topic: Contrails
Condensation is the process which creates clouds, and therefore
it is a crucial process in the water cycle.
Condensation is the change of matter from a state of gas into a state of liquid,
and it happens because water molecules release heat into the atmosphere and
become organized into a more closely packed structure, what we might see as
water droplets.
Water is always present in the air around us as a vapor, but it's too small for
us to see. When water undergoes the process of condensation it becomes organized
into visible water droplets. You've probably seen condensation happen before on the
surface of a cold drink!
Next Topic: Contrails
Weather Topic: What are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
Next Topic: Cumulus Clouds
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