NWUS56 KOTX 130105

LSROTX



Preliminary Local Storm Report

National Weather Service Spokane WA

505 PM PST Fri Dec 12 2025



..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...

..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....

            ..REMARKS..



1040 PM     Debris Flow      Mazama                  48.57N 120.38W

12/10/2025                   Okanogan           WA   Dept of Highways 



            Corrects previous flood report from Mazama. 

            At least 3 debris flow going across SR20. As 

            of 5 PM Dec 12th, SR 20 remains closed 12 

            miles west of Winthrop between mileposts 179 

            and 184. 





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JW