National Weather Service Sioux Falls radar back up and running

 

 The Sioux Falls National Weather Service radar is back up and running.  It had been down for several days with a major upgrade, the installation of Dual Polarization (Dual Pol) technology.  

Benefits of Dual Polarization technology:

  • Better estimation of total precipitation amounts
  • Better estimation of the size distribution of hydrometeors (raindrops, snowflakes, hailstones, drizzle)
  • Much improved ability to identify areas of extremely heavy rainfall that are closely linked with flash floods
  • Improved detection and mitigation of non-weather related radar echoes (chaff, smoke plumes, ground clutter)
  • Easier identification of the melting layer (helpful for identifying snow levels in higher terrain)
  • Improved ability to classify precipitation type

The full benefit of dual-pol radar, however, will not be fully realized until NWS forecasters and research meteorologists develop real-time expertise.



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