National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

NWS Doppler Radar (WSR-88D) Technology

NWS Doppler Radar (WSR-88D) Technology:
Overview of the NWS Doppler Radar System
Dual Polarization (Pol) Radar
Example NWS Doppler Radar Data Images at NWS Louisville
Radar Meteorology Tutorial
Radar Operations Center
Warning Decision Training Branch

Future Radar Technology:
Phased Array Radar: NSSL | NOAA


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