Rapid City weather radar: KUDX

A NEXRAD WSR-88D weather radar in South Dakota, the United States, operated by National Weather Service, NOAA.

Station
Rapid City (KUDX)
Site
New Underwood
Operator
National Weather Service, NOAA
Network
NEXRAD WSR-88D
Antenna
44.125° N, 102.830° W, 3,081 ft (939 m) above sea level
Products
Reflectivity, composite reflectivity, echo tops, vertically integrated liquid, velocity, correlation coefficient, differential reflectivity, specific differential phase (KDP), spectrum width

KUDX is the Rapid City WSR-88D weather radar. It stands in Pennington County beside New Underwood, about 32 km east of Rapid City and 20 km east of Ellsworth Air Force Base. The National Weather Service owns and operates it, and the Rapid City forecast office at 300 East Signal Drive is responsible for it.

The NWS lists the site as Rapid City, SD, while the Radar Operations Center gives the radar data acquisition location as New Underwood and NCEI's station record carries New Underwood as an alias. The Aberdeen and Sioux Falls offices both name KUDX as an adjacent radar to use when their own radars are down for maintenance.

Radar shows rain, snow and hail, not cloud, and nothing below its lowest beam; far from the antenna the beam passes high above the ground.

Nearby

  • Rapid City 20 mi west
  • Box Elder 12 mi west
  • Ellsworth Air Force Base 12 mi west
  • Rapid Valley 16 mi west
  • New Underwood 2 mi south
  • Blackhawk 24 mi west
  • Summerset 26 mi west

Nearby radars

  • North Platte (KLNX) 188 mi southeast
  • Bismarck (KBIS) 209 mi northeast
  • Cheyenne (KCYS) 229 mi southwest

South Dakota radars · United States · Find your radar

Sources: NWS WSR-88D radar list (August 2026), NWS API radar station record KUDX, ROC NEXRAD network sites (January 2018), NCEI HOMR station record NEXRAD:KUDX, NWS Rapid City, SD forecast office home page, NWS Aberdeen, SD, radar back in service after upgrade (March 2021), NWS Sioux Falls, SD, radar outage notice (dome panel replacement), Wikipedia, NEXRAD (list of sites).

Radar data: NOAA National Weather Service (NEXRAD). Place names: GeoNames, CC BY 4.0.