Weather Alert in Michigan
Air Quality Alert issued July 24 at 12:10PM EDT by NWS Grand Rapids MI
AREAS AFFECTED: Mason; Lake; Osceola; Clare; Oceana; Newaygo; Mecosta; Isabella; Montcalm; Gratiot
DESCRIPTION: Air Quality Advisory for Friday, July 25, 2025 The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Advisory for elevated levels of fine particulate (PM2.5) in the northern half of the Lower Peninsula starting at 3 am on Friday. Pollutants within those areas are expected to be in the Unhealthy for Sensitive Groups (USG, Orange AQI) range. The Air Quality Advisory includes the following counties in the Lower Peninsula: Clare, Gratiot, Isabella, Lake, Mason, Mecosta, Montcalm, Newaygo, Oceana, and Osceola Smoke from Canadian wildfires will move into the Upper Peninsula Thursday afternoon. Models then show the plume moving southeast, reaching the northern portions of the Lower Peninsula early Friday morning and continuing towards the central portion of the state. As the smoke moves in, we anticipate PM2.5 to increase into the Unhealthy for Sensitive Groups (USG) range. There is a possibility that hourly levels could reach the Unhealthy (red AQI) range for a short period of time. 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 up-to-date air quality data for Michigan visit the MiAir site: https://air-egle.hub.arcgis.com/ For up-to-date air quality data nationally visit EPAs Air Now site: 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 are Cirrocumulus Clouds?
Home - Education - Cloud Types - Cirrocumulus Clouds
Next Topic: Cirrostratus Clouds
Cirrocumulus clouds form at high altitudes (usually around 5 km)
and have distinguishing characteristics displayed in a fine layer of
small cloud patches. These small cloud patches are sometimes referred to as
"cloudlets" in relation to the whole cloud formation.
Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the
water droplets in the cloud freeze into ice crystals and the cloud becomes a
cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud
formations generally pass rapidly.
Next Topic: Cirrostratus Clouds
Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
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