OTTAWA COUNTY — The extreme weather rollercoaster endured by West Michigan residents tends to lead to a welcome of high temperatures once the long, cold winter is over. 

But the region is in for a massive heat wave this weekend and it’s nothing to balk at. 

The National Weather Service is forecasting highs well into the 90s and heat index values potentially exceeding 100 degrees. The heat wave is anticipated to last from Saturday through at least Tuesday, June 24.

Dr. Gwendolyn Unzicker, Ottawa County Department of Public Health Medical Director, warns residents to take the advisory seriously for the sake of their health. 

“This isn't just uncomfortable weather — it could be life-threatening for vulnerable residents," Unzicker said. "Our biggest concerns are adults over 65, babies and young children, outdoor workers, and anyone with health problems like diabetes or heart disease. If you don't have reliable air conditioning at home, you're also at serious risk and need to make plans now."

Unzicker is urging residents to plan accordingly.

"Don't wait until Friday to prepare. Start drinking extra water now, plan to stay indoors from 10 a.m. to 6 p.m. during the peak heat, and identify your cooling options. Visit libraries, malls or community centers if your home isn't cool enough, or call 2-1-1 to find cooling center," she said. 

She also suggests keeping an eye out for those in our community. 

“This is when we look out for each other. Check on elderly neighbors daily—a quick phone call or visit could save a life. If you work outside, take breaks every 30 minutes and drink water every 15 minutes. And never, ever leave children or pets in vehicles, even for one minute." 

The combination of high temperatures and oppressive humidity poses risks of heat exhaustion, heat stroke and potential power outages due to increased electricity demand.

"Every heat-related illness is completely preventable. It comes down to staying cool, staying hydrated, and not taking chances. When temperatures are this dangerous, changing your plans isn't inconvenient — it's lifesaving,” she said.

“Know the difference between heat exhaustion and heat stroke. Heavy sweating, nausea, and dizziness mean heat exhaustion — get to air conditioning immediately. But if someone is confused, has stopped sweating, or loses consciousness, that's heat stroke. Call 911 right away — don't wait."

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Ottawa County Emergency Management is urging residents to take precautions, according to a news release, especially for vulnerable populations such as young children, older adults, individuals with medical conditions and those without access to air conditioning.

The combination of high temperatures and oppressive humidity poses risks of heat exhaustion, heat stroke and potential power outages due to increased electricity demand.

To stay safe, officials advise the following:

• Stay hydrated: Drink plenty of water, even if not thirsty.
• Avoid peak heat hours: Remain indoors between 11 a.m. and 4 p.m.
• Check on vulnerable individuals: Pay special attention to elderly neighbors, young children and those with health conditions.
• Never leave children or pets in vehicles: Interior temperatures can become deadly within minutes.
• Limit strenuous outdoor activities: Especially during the hottest parts of the day.

Residents are encouraged to monitor local weather forecasts and follow Ottawa County Emergency Management on social media via X (@OttawaCountyEM) and Facebook (OttawaEM) for updates. Additional safety information is available at Ready.gov/heat.

Anyone needing assistance during the extreme heat event can contact Ottawa County Emergency Management or call 2-1-1 for resources.

— Heather VanDyke covers northern Ottawa County for the Ottawa News Network. Contact her at newsroom@ottawanewsnetwork.org.