Weather Alert in Michigan
Air Quality Alert issued July 3 at 11:45AM EDT by NWS Detroit/Pontiac MI
AREAS AFFECTED: St. Clair; Livingston; Oakland; Macomb; Washtenaw; Wayne; Monroe
DESCRIPTION: The Michigan Department of Environment, Great Lakes, and Energy has declared an Air Quality Alert for Thursday July 4th for elevated levels of fine particulate (PM2.5) due to residual wildfire smoke and firework displays. Air Quality Index (AQI) levels are expected to be in the Unhealthy for Sensitive Groups (AQI Orange) Range. The advisory is in effect for the following Michigan counties... St. Clair...Livingston...Oakland...Macomb...Washtenaw...Wayne and Monroe. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases like asthma. Monitor for symptoms such as wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. Reduce or eliminate activities that contribute to air pollution, such as: outdoor burning, use of residential wood burning devices. Tips for households: Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. For further information, please see EPAs Air Now site for up-to-date air quality data: https://www.airnow.gov/ For further health information, please see MDHHS Wildfire Smoke and Your Health site: https://www.michigan.gov/mdhhs/safety-injury-prev/environmental-health/ your-health-and-wildfire-smoke
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Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
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