Persistent showers and thunderstorms will continue to bring heavy rainfall and isolated lightning across the South and Mid-Atlantic. At the same time, the western heat wave begins to shift east, focusing on portions of the northern Plains.,

A stalled front stretching from Texas to the Mid-Atlantic will spark scattered showers and thunderstorms to much of the eastern half of the lower 48 today. Stay tuned to the WeatherRadar and remain vigilant, especially if you've had heavy rain recently, as the risk of flash floods is higher due to saturated soils.

Meanwhile, heat gradually becomes less intense over the Central Valley of California and the Great Basin through mid-to late week as the heat wave shifts east over the northern Plains. Widespread record-breaking temperatures are expected across multiple locales from western Oregon through Idaho and Montana today.

A low-pressure system south of southern Mexico has a low chance of developing as it moves west-northwest. Similarly, another tropical system south of Baja California is moving northwest with a low chance of development over the next seven days. Neither system poses a risk of land impacts during this period.

When heat builds and a front nears, the atmosphere's natural response is to produce storms. Under the right conditions, these storms can become intense or even damaging. Always stay storm-aware with our automated alert system. Here's how you can turn it on!