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Radar Data

There are several types of radar data including Manually Digitized Radar (MDR), Radar Coded Messages (RCM) and NEXRAD data (NIDS). These data come from meteorological radars placed at various locations across the US.

  • The RCM messages are combined into a national mosaic which is updated twice an hour at :05 and :35.
  • The Hi-Res Radar is a composite (often referred to as a mosaic) of all NWS WSR-88D Doppler radars located throughout the continental US. Base reflectivity, in precipitation mode, is used to create this composite. The images are updated every 6 minutes.


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RCM Radar
Hi-Res Radar
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