NWS to combine Wind Chill and Extreme Cold Warnings

National Weather Service Weather Forecast Offices (WFO) in the upper Midwest will continue to issue Extreme Cold Warnings on an experimental basis. This winter, Extreme Cold Warnings will be issued when either air temperatures or wind chill values are 30 degrees below zero or colder. Separate Wind Chill Warnings and Advisories will not be issued.
Extreme Cold Warnings will be issued as Non-Precipitation Weather (NPW) products and will use the EC.W Valid Time Event Code (VTEC).
Comments on this service may be submitted through an online survey. Upon the completion of this experimental period and the close of the comment period, the NWS will evaluate comments to determine whether to proceed with national implementation of the Extreme Cold Warning.  Other comments or questions may be directed to the Rapid City National Weather Service.

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