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 >

Regional Radars

 National Nexrad network

 

Fig. 1 depicts our regional NEXRAD radars and their “theoretical” areas of coverage. In reality, our weather radar coverage is about 80-90 percent of this theoretical coverage, due to beam attenuation and extreme height of the beam at longer distances.  Additionally, mountains will block smaller scale areas, such as the Franklin Mountains blocking portions of El Paso and Hudspeth Counties. Larger areas void of data include the area north and west of Silver City and much of southern and eastern Hudspeth County.

 

Fig. 2 shows the NEXRAD radar network of the continental U.S., including NWS and Department of Defense sites.