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Boston Globe
13 hours ago
- Climate
- Boston Globe
Heat dome will blanket much of the US, with worrisome temperatures in Midwest
'A lot of those folks have been saying, where's summer? Well, buckle up, because it's coming,' said Kines. The humid conditions will make places that exceed 90 degrees Fahrenheit feel as much as 20 degrees hotter, said Kines. In Boston, highs in the mid- to upper 90s are forecast for Monday and Tuesday. Advertisement A heat dome occurs when a large area of high pressure in the upper atmosphere acts as a reservoir that traps heat and humidity, said Ricky Castro, a National Weather Service meteorologist in Illinois. Get Starting Point A guide through the most important stories of the morning, delivered Monday through Friday. Enter Email Sign Up According to the NWS Weather Prediction Center, daytime temperatures will be in the 90s Fahrenheit and overnight temperatures will only drop to the mid-70s Fahrenheit from the Great Lakes to the East Coast during the heat wave that's expected to last into next week. Moisture blown northward from the Gulf of Mexico is fueling the muggy weather, said Jacob Asherman, a Weather Prediction Center meteorologist. This influx of moisture is fairly typical during late spring and summer, he said. The Gulf, which shares borders with Mexico and the US, was renamed by President Trump to the Gulf of America. Advertisement The heat will be widespread into next week. On Friday, Denver could reach 100 degrees, according to the weather service. Chicago temperatures could reach 96 on Sunday. On Tuesday, Washington, D.C., could see a high of 99 and New York Central Park could reach 96. Several states in the Midwest could see dangerous temperature impacts over the weekend, according to a weather service measure that rates the risk from zero to four. Parts of Nebraska and Kansas will be in the highest category on the scale on Saturday, meaning that anyone without effective cooling or sufficient hydration could face health risks. On Sunday, Iowa, Wisconsin, Missouri, and Illinois also see a category 4 rating. Humidity is the amount of water vapor in the air, and the heat index is what the temperature feels like when the humidity outside is factored in, according to the weather service. When humans sweat, it cools the body down because it absorbs and removes heat as it evaporates off the skin. The air is saturated with water on humid days, which makes it harder for sweat to evaporate. Hot and humid days can be dangerous when the body is unable to cool itself off and can exacerbate pre-existing health conditions and even lead to heat stroke. Minimizing direct sun exposure, wearing loose and light-colored clothing, staying hydrated, and spending time in air-conditioned spaces are ways to cool down during extreme heat, according to the NWS. Some parts of the US, such as Phoenix, Ariz., are famously hot without the mugginess. Phoenix and nearby desert regions experience this so-called 'dry heat' due to being located far away from large water bodies, mountains that block moist air masses, and weather patterns that bring scarce precipitation. Advertisement Sweat evaporates faster in dry climates compared to humid ones. This can be dangerous because it is easy to underestimate how dehydrated you are, according to Johns Hopkins University and Johns Hopkins Health System. In places such as Iowa, crops can affect the humidity in summer months. Plants feel the effects of hot weather and some people in the Midwest are familiar with " corn sweat," which is when crops move water to their leaves and other surfaces so it can evaporate, according to the Ohio State University. Madison County, Iowa, farmer Ryan Marquardt said corn sweat is 'not as bad as a sauna, but it definitely would have a sauna effect. It's humid in there (the cornfield), so you're gonna sweat.'
The Independent
a day ago
- Climate
- The Independent
Millions brace for powerful ‘heat dome' set to engulf much of America
Millions across the United States are bracing for a dramatic start to summer this week, as a powerful 'heat dome' is set to engulf vast swathes of the country, bringing with it stifling temperatures and oppressive humidity. Forecasters have issued warnings of extreme temperature impacts, particularly highlighting the upcoming weekend for Nebraska, Illinois, Wisconsin, and Iowa, where residents can expect the most severe conditions. This will be the first stretch of true summertime weather for many from Midwest to the East Coast, said Tom Kines, a meteorologist at the private weather company AccuWeather. 'A lot of those folks have been saying, where's summer? Well, buckle up, because it's coming,' said Kines. The humid conditions will make places that exceed 90 degrees Fahrenheit (30 degrees Celsius) feel as much as 20 degrees hotter, said Kines. What is a heat dome? A heat dome occurs when a large area of high pressure in the upper atmosphere acts as a reservoir that traps heat and humidity, said Ricky Castro, a National Weather Service meteorologist in Illinois. According to the NWS Weather Prediction Center, daytime temperatures will be in the 90s Fahrenheit (30s Celsius) and overnight temperatures will only drop to the mid-70s Fahrenheit (mid-20s Celsius) from the Great Lakes to the East Coast during the heat wave that's expected to last into next week. Moisture blown northward from the Gulf of Mexico is fueling the muggy weather, said Jacob Asherman, a Weather Prediction Center meteorologist. This influx of Gulf moisture is fairly typical during late spring and summer, he said. The heat will be widespread into next week. On Friday, Denver could reach 100°F (38°C), according to the weather service. Chicago temperatures could reach 96 degrees (36°C) on Sunday. On Tuesday, Washington, D.C., could see a high of 99°F (37°C) and New York Central Park could reach 96°F (36°C). Several states in the Midwest could see dangerous temperature impacts over the weekend, according to a weather service measure. Parts of Nebraska and Kansas will be in the highest of four categories on the scale on Saturday, meaning that anyone without effective cooling or sufficient hydration could face health risks. On Sunday, Iowa, Wisconsin, Missouri and Illinois also see a category 4 rating. Humidity is the amount of water vapor in the air, and the heat index is what the temperature feels like when the humidity outside is factored in, according to the weather service. When humans sweat, it cools the body down because it absorbs and removes heat as it evaporates off the skin. The air is saturated with water on humid days, which makes it harder for sweat to evaporate. Hot and humid days can be dangerous when the body is unable to cool itself off and can exacerbate pre-existing health conditions and even lead to heat stroke. Minimizing direct sun exposure, wearing loose and light-colored clothing, staying hydrated and spending time in air-conditioned spaces are ways to cool down during extreme heat, according to the NWS. Some parts of the U.S., such as Phoenix, Arizona, are famously hot without the mugginess. Phoenix and nearby desert regions experience this so-called 'dry heat' due to being located far away from large water bodies, mountains that block moist air masses and weather patterns that bring scarce precipitation. Sweat evaporates faster in dry climates compared to humid ones. This can be dangerous because it is easy to underestimate how dehydrated you are, according to Johns Hopkins University and Johns Hopkins Health System. In places such as Iowa, crops can affect the humidity in summer months. Plants feel the effects of hot weather and some people in the Midwest are familiar with ' corn sweat,' which is when crops move water to their leaves and other surfaces so it can evaporate, according to the Ohio State University. Madison County, Iowa, farmer Ryan Marquardt said corn sweat is 'not as bad as a sauna, but it definitely would have a sauna effect. It's humid in there (the cornfield), so you're gonna sweat.' Cornfield contributions to the overall humidity are much lower compared to the humidity winds carry from the Gulf of Mexico, according to OSU.
Chicago Tribune
20-04-2025
- Climate
- Chicago Tribune
Heavy rain in Chicago delays Easter Sunday Cubs game
Afternoon egg hunts and the Cubs game Sunday were interrupted by a bout of heavy rain across the Chicago area, expected to ease up in the late afternoon before more stormy weather overnight. The worst of the Easter rain was expected to dry by about 3:30 p.m., National Weather Service meteorologist Ricky Castro said. Showers were expected around 8 p.m. with stormy conditions including wind gusts and possible lightning likely around midnight. The series finale between the Cubs and Diamondbacks was delayed at least twice Sunday afternoon because of the weather. Shortly after a delayed 2 p.m. start, the game stopped again due to lightning in the area, the Cubs posted on social media. Inland in the metro area, temperatures 'could make a run toward 60 degrees,' Castro said. But there won't be much of a warm up for fans at Wrigley Field or anywhere on the lakefront, he said, as temperatures there hovered in the 40s on Sunday and were expected to stay cool.
