National Weather Service United States Department of Commerce

Heavy Snow Band north of I-90 - January 18, 2019

A band of heavy snow developed just north of Interstate 90 during the morning of Friday, January 18, 2019. The axis of heaviest snow, with reports of 10 to 15 inches, was along the SD Hwy 34/MN Hwy 30 corridor from around Madison, SD, east toward Windom, MN. Despite not being within the heaviest snow band, new daily snowfall records were set at both Sioux Falls and Huron, South Dakota. Read More >

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 Observations   |   General Information  |  WxCoder

WxCoder - A National Weather Service Cooperative Observation Report Form


WXCODER is a system developed by the National Weather Service that enables Cooperative Weather Observers to send weather observations to the National Weather Service using a web-based form.  If you would like more information on the Cooperative Observer program for the NWS Sioux Falls CWA, please e-mail Brad Adams (Observing Program Leader).

If you are already a Cooperative Observer, and are interested in using WXCODER to transmit your observations, please e-mail Brad Adams or call our 800 number and ask to speak to Brad Adams.

GO TO WXCODER to submit an observation

Helpful Hints for using WxCoder

  • Your Username and Access Code are case-sensitive (lowercase for old form)
  • Select the type of observation:  Daily (24 Hour Totals) -- NOTE: this is the default
  • Verify the date and observation time (if different from the default)

If you need any other assistance in using WxCoder, call our 800 number, and ask to speak to Brad Adams. You can also contact him via email at

 Observations   |   General Information  |  WxCoder

Questions, comments, or interest in the Cooperative Observer Program can be directed to Brad Adams, Observing Program Leader for the NWS Sioux Falls CWA.