Apex Wx

Heavy Rainfall and Potential Flooding Threaten Multiple Regions Across the United States
A weather system moving eastward across the central states will bring significant atmospheric moisture, creating a risk of excessive rainfall. Regions along the Missouri and Mississippi valleys, including parts of Arkansas, face the highest threat of heavy, repeating downpours through Friday morning. Meanwhile, monsoonal moisture across the Four Corners region will keep localized flooding risks present in Arizona, New Mexico, and Colorado, although a high-pressure ridge should limit overall coverage. Along the Central Gulf Coast and Southeast, a trailing frontal boundary will prompt afternoon downpours and localized flooding. Finally, as a low-pressure system moves off the southern New England coast, saturated soils and potential training storms maintain a low risk of flooding.

Dry Thunderstorms and Elevated Fire Weather Continue Across the West
Warm and dry weather will continue across much of the western United States as high pressure slowly shifts westward and expands across the Southwest and southern Plains. A few thunderstorms are expected to develop over the higher terrain of the Four Corners region, although overall conditions will continue to become drier. Additional isolated to scattered thunderstorms are possible across parts of central and eastern Idaho and western Montana during the afternoon and evening. Many of these storms may produce little rainfall, increasing the risk of lightning without meaningful precipitation. Smoke from ongoing wildfires could also affect where storms develop. Meanwhile, low humidity and gusty winds across parts of the Inland Northwest and the western and northern Great Basin will create elevated fire weather conditions and may allow any new or existing wildfires to spread more quickly.