Tropical system forming close to Mexico, could bring heavy rain

The first tropical system of the season in the eastern Pacific, to be named Alvin when it reaches tropical storm strength, is forecast to form about 300 miles southwest of Mexico on Wednesday, according to the National Hurricane Center.
The storm is predicted to strengthen through Friday, with a chance for it to reach low-end hurricane strength due in part to above-average water temperatures in the region.

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Wall Street Journal

2 hours ago

• Wall Street Journal

Dangerous Heat Dome to Bring Record Temperatures to Much of the U.S.

Forecasters warn that dangerously hot and humid weather will blanket nearly 200 million people this weekend and next week as a phenomenon known as a heat dome traps the sweltering air. 'There will be three, four, maybe five days in a row of a persistent heat dome with hot, humid, sunny conditions over a good portion of the Eastern U.S.,' said Bryan Jackson, meteorologist at the National Weather Service's Weather Prediction Center in College Park, Md.

Washington Post

2 hours ago

• Washington Post

CWG Live updates: Heat arrives today, becomes potentially dangerous early week

Welcome to updated around-the-clock by Capital Weather Gang meteorologists. Happening now: Our heat wave gets going today with highs near 90 and into the low 90s locally. Relatively modest humidity keeps it bearable, for now. What's next? Sunday through Wednesday look rather brutal and possibly dangerous. Heat indexes approach 110 or higher with actual temperatures around 100 to start the workweek. Today's daily digit — 5/10: Hot but just a preview of what's to come. Humidity could be worse, too. | 🤚 Your call? The digit is a somewhat subjective rating of the day's weather, on a 0-to-10 scale. Forecast in detail Today (Saturday): Lots of sun from start to finish. Highs range from the upper 80s in the coolest spots to the low 90s in the city. Winds are from the south and southwest around 5 to 10 mph. Relatively modest humidity. Confidence: High Tonight: Decent this evening, with temperatures staying in the 80s till sunset. Mainly clear tonight. Lows about 70 to 75. Confidence: High Tomorrow (Sunday): It's another day of near wall-to-wall sunshine as a high-pressure heat dome builds into the region. Mid- to upper 90s should do it for highs in most locations. Confidence: High Tomorrow night: Mostly clear. Lows range from the mid-70s to around 80. Confidence: Medium-High A look ahead Upper 90s to near 100 both Monday and Tuesday as high pressure exerts control and delivers more sunshine. With dew points around 70, humidity is high enough to push heat indexes toward 110 in the afternoon in the hottest spots. Confidence: Medium-High Maybe a touch less scorching by Wednesday, but you might not notice given stifling humidity. Highs in the mid- and upper 90s feel about 10 degrees hotter than that. As high pressure shifts a bit, we may introduce a chance of storms late-day. Confidence: Medium Today's daily digit — 5/10: Hot but just a preview of what's to come. Humidity could be worse, too. | 🤚 Your call? The digit is a somewhat subjective rating of the day's weather, on a 0-to-10 scale. Forecast in detail Today (Saturday): Lots of sun from start to finish. Highs range from the upper 80s in the coolest spots to the low 90s in the city. Winds are from the south and southwest around 5 to 10 mph. Relatively modest humidity. Confidence: High Tonight: Decent this evening, with temperatures staying in the 80s till sunset. Mainly clear tonight. Lows about 70 to 75. Confidence: High Tomorrow (Sunday): It's another day of near wall-to-wall sunshine as a high-pressure heat dome builds into the region. Mid- to upper 90s should do it for highs in most locations. Confidence: High Tomorrow night: Mostly clear. Lows range from the mid-70s to around 80. Confidence: Medium-High A look ahead Upper 90s to near 100 both Monday and Tuesday as high pressure exerts control and delivers more sunshine. With dew points around 70, humidity is high enough to push heat indexes toward 110 in the afternoon in the hottest spots. Confidence: Medium-High Maybe a touch less scorching by Wednesday, but you might not notice given stifling humidity. Highs in the mid- and upper 90s feel about 10 degrees hotter than that. As high pressure shifts a bit, we may introduce a chance of storms late-day. Confidence: Medium

Yahoo

2 hours ago

• Yahoo

First heat wave of the season could break records in York

After cool and rainy days in southcentral Pennsylvania, summer will kick off with a heat wave. Temperatures are expected to rise into the 90s, starting this weekend, and remain high through at least the middle of next week. It will mark the first heat wave of the season, and the first time the mercury has reached 90 degrees this year, National Weather Service meteorologist Mike Dangelo said. The heat could break records in York on Sunday and Monday, senior meteorologist Adam Douty said. The temperature on Sunday is expected to reach 97 degrees, and the record is 98 degrees set in 1988, he said. On Monday, a high of 98 degrees is predicted, which could break the record of 96 degrees set in 1943. With the humidity and the high temperatures, it could feel like 105 degrees, Douty said. The National Weather Service predicts the first 90-degree day will be on Sunday, with a high of 93 degrees, while expects the mercury to reach 91 degrees on Saturday. Both the weather service and predict that temperatures will remain in the 90s for days. forecasts the hot weather could last into the following weekend. A big ridge of high pressure will sit over the area, bringing the hot and dry weather, Douty said. It'll be a big switch from the cloudy, rainy and cool weather the area has experienced recently. Meteorologists are advising the public to take precautions to stay healthy. "It'll be steamy and hot," Dangelo said. Heat waves can make people ill as their bodies try to regulate their temperature, and steps can be taken to help prevent an emergency, according to the National Weather Service. Heat strokes require immediate medical attention. The weather service offers these tips for helping to stay cool during a heat wave: Drink plenty of fluids, including water, and avoid alcoholic beverages. Plan strenuous activities during the coolest times of the day, such as in the morning or the evening. Wear lightweight, loose fitting, and light-colored clothing to help stay cool. Eat light meals, such as salads and fruit, that are easier to digest. Turn on the air conditioner or go some place that offers A/C, such as a mall or the library. Use a portable fan to remove heat from a room or to pull in cooler air. Take cool baths or showers. Keep children, people with disabilities, the elderly, pets and others safe during extreme temperatures. This article originally appeared on York Daily Record: First heat wave of 2025 predicted for York, Adams and Lebanon counties