National Weather Service United States Department of Commerce

Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Fig. 10. The KMAF 88D base reflectivity from 1729 to 2025 UTC showed Tropical Storm Claudette as it crossed the Rio Grande River into west Texas. The storm’s central circulation and convective spiral bands are easily seen. In addition, data from the Lightning Detection Network depicted very few cloud-to-ground strikes within the storm’s central precipitation shield with a much higher frequency of lighting strikes in the convective bands.