National Weather Service United States Department of Commerce

Rare Southern U.S. Winter Storm; Dangerous Cold Weather For Much of the Eastern U.S.; Critical Fire Weather for Southern California

A rare winter storm impacting the Southern U.S. will move offshore Wednesday morning. Behind the storm, arctic air will continue encompassing the eastern two-thirds of the Nation with only a slow return to normal temperatures expected by the end of the week. Moderate to strong Santa Ana winds and low humidity will maintain Critical fire weather conditions in southern California into Thursday. Read More >

Measuring and Reporting Snow to the National Weather Service

The National Weather Service needs your help!  During snow storms, your snow depth measurement, especially if you live in a rural area, is valuable information for determining the impact of the event and accuracy of our forecasts.  When it snows, we encourage you to find a simple yard stick and take snow depth measurements every 3 to 6 hours -- more often if conditions are rapidly changing.  Please report your snow depth (in inches) using our Storm Report Form.  Your report will be immediately sent to and viewed by a NWS forecaster.

Taking accurate snow observations is very important. Please click the following slides for a short primer on how to correctly measure snow depth.

 
   
Report your snow depth measurement on the Storm Report Form
   
Thanks to CoCoRaHS for the images used on this page.  CoCoRaHS is an acronym for the Community Collaborative Rain, Hail and Snow Network. CoCoRaHS is a unique non-profit community-based network of volunteers of all ages and backgrounds working together to measure and map precipitation (rain, hail and snow).  To join CoCoRaHS, go to https://www.cocorahs.org