Weekly Weather Watch: Tuesday, June 25th, 2024
Heat and excessive rainfall are some of the headlines from last week’s weather watch. In this week’s weather briefing, heat and excess moisture are expected. Here are some highlights of items you’ll soon see across your feeds. These weekly weather watches point out what’s ahead, give you the data, and do so without the hype. Monthly subscribers, your July outlook will be in your inbox next week.
THE PATTERN
For this week:
Heat spreads across the Central/Southern Plains to the Southeast.
Severe thunderstorms with flash flooding for the Upper Midwest.
Glimpses of the monsoon for the Southwest/Four Corners Region and Mexico.
Heavy rainfall spreads across Canada.
No imminent tropical system for the Gulf of Mexico.
For next week:
Heat spreads throughout the Eastern U.S.
Heavy precipitation continues for the Southwest.
ON THE RADAR
Timing:
IN THE GAUGES
Total Precipitation this week: There’s a heavy amount of rain for Mexico, that’ll reach into the Southwestern U.S. as part of a monsoonal surge. Parts of corn country / Midwest receive enough rainfall for some flash flooding. Canada stays in the favored pattern for moisture, too.
THE MERCURY
Record heat this week: There are potentially new record highs across the States this week, here are the locations and the possible max temps.
ARE YOU CIRRUS
Simply, the term “heat wave” refers to a period of abnormally hot weather generally lasting more than two days. Heat waves can occur with or without high humidity and have the potential to cover a large area, exposing a large number of people to hazardous heat. The WMO defines this as five or more consecutive days when the daily max temperature surpasses the average max temperature by 9°F or more. (A previous version of this post included an erroneous definition, now replaced with this latest one.)
Have a great week. - Matt
As we close out 2025 and ring in the new year, the weather pattern stays anything but quiet. A multi-day lake-effect snow event is burying areas downwind of Lakes Erie and Ontario, where over 3 feet of snow could fall in the most persistent bands—creating whiteout squalls and treacherous travel through New Year's Day. Meanwhile, Arctic air is spilling deep into the Southeast, sending temperatures below freezing as far south as Florida, with frost and freeze alerts in place. On the other side of the country, a Pacific storm system will bring rounds of heavy rain and a flash flood threat to Southern California, especially around Los Angeles, starting late New Year's Eve. Elsewhere, a couple of fast-moving clippers will spread freezing rain and snow to Alberta, then snow across the Midwest, Ohio Valley, and into New England, while a developing storm may bring soaking rain and thunderstorms from the Deep South to the Southeast Coast by the weekend. Even Northern California faces an atmospheric river event late week, setting the stage for an active and disruptive start to 2026.