Weather Alert in Michigan
Air Quality Alert issued May 30 at 10:28AM EDT by NWS Marquette MI
AREAS AFFECTED: Keweenaw; Ontonagon; Houghton; Baraga; Marquette; Alger; Luce; Gogebic; Iron; Dickinson; Menominee; Delta; Southern Schoolcraft; Southern Houghton; Northern Schoolcraft
DESCRIPTION: The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Advisory for elevated levels of fine particulates (PM2.5) across the state of Michigan. Pollutants are expected to be in the Unhealthy for Sensitive Groups (USG, Orange AQI) range Friday into Saturday morning. The Air Quality Advisory issued yesterday for the western Upper Peninsula has been expanded to cover all of Michigan. A cold front moving down from Ontario will bring wildfire smoke plumes from fires in the provinces of Manitoba and Saskatchewan into the state. The smoke plumes and associated increased PM2.5 will sink from north to south through the state from Friday morning to Saturday morning. Increased vertical mixing associated with the boundary will likely bring smoke to the surface. As a result, we anticipate PM2.5 levels rising into the Unhealthy for Sensitive Groups (USG) range across the state. There is a possibility that hourly levels could reach the Unhealthy (Red AQI) range for a short period of time. While not all locations will reach USG for PM2.5, there is enough of a threat to warrant an Advisory. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases such as 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, and use of residential wood burning devices. 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 further information, please see EPA's Air Now site for up-to- date air quality data at https://www.airnow.gov For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke. Air Quality Advisory Michigan Department of Environment, Great Lakes, and Energy May 30, 2025
INSTRUCTION: N/A
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Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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