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Axios
a day ago
- Climate
- Axios
What to expect for July 4 weather: Storms and heat
Your July 4 fireworks and barbecues may be indoors this year — depending on the weather. Why it matters: Scorching hot temperatures and widespread thunderstorms may disrupt your festivities or cause travel delays for the record-number of people hitting the road this holiday weekend. Here's on the menu for July 4 weather. What to expect for July 4th weather Zoom out: Much of the United States will see clear skies for fireworks. But it might be hot. Like, really hot. Parts of the Upper Plains will see temperatures surge 10 to 20 degrees above average on Thursday and Friday, according to NOAA's weather outlook for the weekend. A cold front will push that hot air to the Great Lakes and Appalachians over the weekend. Parts of Minnesota are under a heat advisory, with the heat index near 100 degrees. The Southeast will also see higher temperatures, according to NOAA, and triple digit temperatures are expected in parts of Texas. What they're saying: Bryan Jackson, a meteorologist at the NWS Weather Prediction Center, told Axios that those in Wisconsin, Minnesota and the upper Midwest should stay weather aware due to the heat. The other side: The Western U.S. will face below average temperatures caused by breezes off the Pacific Ocean, according to NOAA. "It's still 104 in Phoenix, but that's below normal," Jackson said. Areas of the Northeast — including Philadelphia, Boston and New York City — as well as North Dakota are under threat from storms to end the week, too. But "sunny, summer conditions" and "pretty great weather" are on tap for the Northeast this weekend, Jackson said. Travel delays for July 4 are possible Context: AAA projects 72.2 million Americans will travel domestically for the July 4 holiday period (defined as June 28 through July 6). TSA expects over 18.5 million travelers to be screened from July 1 to July 7. "This year, we're seeing strong demand for road trips, flights, and cruises, especially with the holiday falling on a Friday," Debbie Haas, vice president of AAA Travel, said in a statement. "This is allowing travelers to extend their getaways and make lasting memories with loved ones." Yes, but: Rain could cause travel delays. Sections of the Southwestern U.S. — Texas, New Mexico and Arizona — will face downpours Thursday and Friday, according to NOAA's weather outlook. A frontal system could develop into a tropical storm off the coast of Florida, according to NOAA's National Hurricane Center. Flashback: Showers and thunderstorms boomed in Florida, Baltimore and Washington, D.C., earlier this week. Congress was even worried about travel headaches ahead of the vote on President Trump's "big, beautiful bill." Thunderstorms caused ground stops in New York City, and Washington, D.C., on Tuesday. July 4 fire warnings What to know: Parts of Oregon, Idaho, Nevada and Utah are facing red flag warnings, according to the National Weather Service's weather outlook.
Newsweek
3 days ago
- Climate
- Newsweek
Dangerous Flash Flooding Could Hit US Capital: What to Know
Based on facts, either observed and verified firsthand by the reporter, or reported and verified from knowledgeable sources. Newsweek AI is in beta. Translations may contain inaccuracies—please refer to the original content. A Tuesday forecast issued by the National Weather Service (NWS) predicts excessive rainfall in Washington, D.C., on Tuesday, which could potentially develop into flash flooding. Up to 3 inches of rain could fall in the Washington, D.C., area, NWS meteorologist Kevin Witt told Newsweek, and there's a chance for higher amounts. "We've been getting a lot of rain lately, so flooding is definitely a possibility," he said. Why It Matters A slow-moving frontal boundary will bring multiple rounds of rain showers and thunderstorms with the risk of flash flooding across the Upper Mid-Atlantic, the Ohio Valley, and the Central Appalachians on Tuesday, the NWS said in a forecast. NWS offices across the region have already issued flood watches and hazardous weather outlooks. What To Know A forecast map shared by the NWS Weather Prediction Center shows a moderate risk area, where there is at least a 40 percent chance of excessive rainfall, located in northern Virginia, far eastern West Virginia, Maryland, northern Delaware, southern Pennsylvania, and Washington, D.C. An excessive rainfall outlook from the NWS Weather Prediction Center shows a moderate risk for Washington, D.C. An excessive rainfall outlook from the NWS Weather Prediction Center shows a moderate risk for Washington, D.C. NWS Weather Prediction Center "Heavy rain and numerous instances of flash flooding are likely today across portions of the mid-Atlantic, including major cities and populations between Washington D.C. and Philadelphia. A Moderate Risk (level 3 of 4) is in effect through tonight in these regions," the NWS Weather Prediction Center said in a Facebook post on Tuesday morning. In addition to heavy rain and flash flooding in the D.C. area, damaging winds are also possible, the NWS forecast office for the region warned in a hazardous weather outlook. "Numerous thunderstorms are expected to form and move across the Watch area this afternoon and evening. While thunderstorms will move along at a decent clip, they will be capable of producing very heavy instantaneous rainfall rates, and may exhibit some training motion at times," the office said in a flood watch. "Multiple rounds of thunderstorms may be possible at any single location," the flood watch said. "In total, a widespread 1 to 2 inches of rain is expected, with embedded higher totals of 2 to 5 inches. Flash flooding may occur as a result." Average July rainfall for Washington, D.C., is 4.33 inches, Witt said. The storms are not uncommon for this time of year, as July is still in D.C.'s severe weather season. What People Are Saying The NWS office for Washington, D.C., on Tuesday morning on X, formerly Twitter: "An active weather day is expected today, with threats for both flash flooding and severe thunderstorms this afternoon into this evening. A Flood Watch has been issued for much of the area, and many of the same locations are in a Slight Risk for Severe Thunderstorms from [Storm Prediction Center]." NWS in a Tuesday forecast: "Scattered strong to severe storms, excessive rainfall, and flooding are expected across parts of the Mid-Atlantic into the Northeast today. Flood Watches are in effect." What Happens Next The flood watches across the area are expected to remain in place through Tuesday evening or late Tuesday night, depending on the location. No hazardous weather is expected from Wednesday through Saturday, according to the hazardous weather outlook.
Boston Globe
19-06-2025
- 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.'
18-06-2025
- Climate
Heat dome will blanket much of the US, with worrisome temperatures in Midwest
Summer will make a dramatic entrance in the U.S. this week with a heat dome that will bring stifling temperatures and uncomfortable humidity to millions. The heat will be particularly worrisome this weekend across wide stretches of Nebraska, Illinois, Wisconsin and Iowa, where forecasters are warning of extreme temperature impacts. 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. 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. ___
Winnipeg Free Press
18-06-2025
- Climate
- Winnipeg Free Press
Heat dome will blanket much of the US, with worrisome temperatures in Midwest
Summer will make a dramatic entrance in the U.S. this week with a heat dome that will bring stifling temperatures and uncomfortable humidity to millions. The heat will be particularly worrisome this weekend across wide stretches of Nebraska, Illinois, Wisconsin and Iowa, where forecasters are warning of extreme temperature impacts. 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. Heat dome forming 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. High humidity makes it hard to cool down 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. Even the crops 'sweat' 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. ___ Associated Press writer Jack Dura in Bismarck, North Dakota, contributed to this report. ___ The Associated Press' climate and environmental coverage receives financial support from multiple private foundations. AP is solely responsible for all content. Find AP's standards for working with philanthropies, a list of supporters and funded coverage areas at
