Weather Alert in Michigan
Air Quality Alert issued June 16 at 12:24PM EDT by NWS Grand Rapids MI
AREAS AFFECTED: Muskegon; Ottawa; Kent; Allegan; Van Buren
DESCRIPTION: Air Quality Advisory for June 17, 2025 The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has declared an Air Quality Advisory for June 17 for elevated levels of ozone in several western lake shore counties. Pollutants within those areas are expected to be in the Unhealthy for Sensitive Groups (USG, Orange AQI) range. The Air Quality Advisory is in effect for the following Michigan counties: Allegan, Kent, Muskegon, Ottawa, and Van Buren All signs point towards the likely development of elevated ozone along the several lake shore counties. Elements such as wind direction, temperature, dew points, upper air conditions all point towards the likelihood that could see ozone concentration in the Unhealthy for Sensitive Groups (USG) range along those counties. Cloud cover is uncertain during the peak heating hours of the day, but enough sun will likely be present to trigger the photochemical reactions necessary to generate ozone. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with respiratory diseases such as asthma. People and businesses are urged to avoid activities which can lead to ozone formation. These activities include: refueling vehicles or topping off when refueling, using gasoline powered lawn equipment, using charcoal lighter fluid. Positive activities include: Driving less, telecommuting, walking or bike riding, delaying or combining errands, using water-based paints. For further information, please see EPAs Air Now site for up-to- date air quality data: https://www.airnow.gov/
INSTRUCTION: N/A
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Weather Topic: What is Freezing Rain?
Home - Education - Precipitation - Freezing Rain
Next Topic: Graupel
Freezing rain is a condition where precipitation which has fallen in the form of
water droplets reaches temperatures which are below freezing and freezes upon
coming into contact
with surface objects. The result of this precipitation is a glaze of ice which
can be damaging to plants and man-made structures. A severe onset of freezing
rain which results in a very thick glaze of ice is known as an ice storm.
Next Topic: Graupel
Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
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