National Weather Service United States Department of Commerce

June 22nd - 100th Anniversary of the 1919 Fergus Falls F5 Tornado

June 22, 2019 will be the 100th anniversary of the deadly F5 tornado that hit Fergus Falls, Minnesota. This event review looks back at that historic day. Read More >

The Probabilistic Flood Outlook Summary (PFOS) is an experimental product/service that will be posted to this page for evaluation from February 21, 2019 to May 31, 2019. During this period, we encourage your comments or suggestions for improvement. Your feedback will help us determine product/service utility, if modifications are needed, and whether the product/service should become part of our operational suite.

This product/service is a graphic that depicts the probabilities of reaching certain river stages based on the standard probabilities of 95%, 90%, 75%, 50%, 25%, 10%, and 5%. This product is intended to give users an overview of the flood risk at the mainstem forecast points along the Red River of the North for the next 90 days during the spring snowmelt season.

The Product Description Document can be found here.

Feedback/comments regarding this products can be directed to Ryan Knutsvig, MIC, through e-mail: Alternatively, to provide comments via an anonymous survey, please follow the link here.

Prototype/Under Development: Prototype is for demonstration/test purposes only—Not to be relied on for operational decision making. This prototype is not supported 24/7 and may be discontinued at any time without advance notice.

This page was last updated on March 15, 2019.

(Image courtesy of USGS)


Feedback will help determine if this product is continued, modified, or discontinued. Please consider providing feedback here: (