Get ready for record high temperatures.
The heat dome will affect millions of Americans in the coming days, with temperatures expected to reach triple digits in some areas as Independence Day approaches. Temperatures in New York City will reach 95 degrees on July 4, according to AccuWeather Senior Meteorologist Alan Reppert.
“If that happens, it will be the hottest Fourth of July since 2010, when temperatures in Central Park reached 96 degrees Fahrenheit,” Reppert said.
But what exactly is a heat dome? USA TODAY asked Reppert to explain.
What causes dangerous temperatures?Heat dome
Heat domes act like a lid on the atmosphere, trapping heat in the same area for long periods of time. “Heat domes are caused by strong high pressure over a wide area, and they can heat up and expand a little bit,” Reppert said, adding that they typically move more slowly than other weather patterns, so they can last a while.
“As the storm moves slowly on the west coast and east of the system, the jet stream rises north, pushing warm air northward and bringing heat to much of the central and eastern parts of the country. There are also storms in the Atlantic Ocean, which are not as strong as the storms to the west, but they are trapping this ridge,” Reppert said.
If you can’t see the graphic, click here to view it.
According to AccuWeather, heat domes can also prevent cloud formation and increase solar radiation, increasing temperatures. Uninterrupted sun dries the soil and increases the risk of drought, while weak winds cause pollutants to accumulate and worsen air quality, especially in urban areas.
How do you expect Heat Dome to play out this week?
“For many Americans, the heat has already arrived. But in many cities and communities, the hottest days are still ahead. Temperatures and AccuWeather “As RealFeel temperatures continue to rise throughout the week, it’s important to take the heat seriously by limiting outdoor time during the hottest parts of the day, staying hydrated, and checking on those most at risk of heat-related illness, such as seniors, children, and pets,” said AccuWeather Expert Meteorologist Carl Erickson.
How hot can it get by July 4th
How dangerous the combination of humidity and heat is
It’s not just the heat, but also the humidity.
The National Weather Service warns that “extreme heat and humidity significantly increase the likelihood of heat-related illness, especially for those engaged in or participating in outdoor activities.”
According to a recent NWS announcement, “The intensity and length of the heatwave will further exacerbate the impacts on both people and infrastructure. This is not the kind of heat we see every year, and could be the hottest period the region has experienced since July 2011. This heat will be especially dangerous for young people, the elderly, and other vulnerable populations.”
This graph shows how hot you feel when the effects of humidity and high temperature combine, a measurement known as the heat index.
Know the signs of heat stroke and heat stroke
Hot and humid environments make it difficult for the body to regulate its temperature. Your health depends on recognizing the warning signs that it’s too hot and knowing how to act.
According to the Centers for Disease Control and Prevention, common signs and symptoms of heat-related illness include:
Additional tips for staying cool
- drink water, No matter how active you are, more than usual. Don’t wait until you’re thirsty. Give your pet plenty to drink.
- Avoid sugar, alcohol and caffeine. Fluids containing large amounts of these substances can increase fluid loss.
- Stay in an air-conditioned building As much as possible.
- Take a cold shower or bath.
- limit outdoor activities; Especially during the day.
- Use curtains or shades Near the window to avoid sunlight.
- Limit the use of ovens and stoves To keep the temperature inside the house low.
- Please wear light-colored, loose-fitting clothing To improve sweat evaporation.
Source AccuWeather, National Weather Service, Centers for Disease Control and Prevention, USA TODAY research
