Regional Flooding – Travel Advisory for Islanders • San Juan County, WA

SAN JUAN COUNTY, WA. December 10, 2025— Island residents and companies who’re planning on mainland journey this week needs to be conscious that the flooding forecast for Skagit County could affect each Highway 20 and I-5. 

The peak of the flooding in Mt. Vernon is at present forecasted to happen at 4:00 am on Friday, December twelfth. It just isn’t clear precisely when or if flooding would possibly affect the highways, but it surely may doubtlessly happen through the day on Thursday, December eleventh.

Islanders are strongly inspired to delay non-critical journey till after the flooding has receded and it has been confirmed that the roads are open. Road situations can be found on the WSDOT map at: https://wsdot.com/Travel/Real-time/Map/ 

While the water is forecasted to go down pretty shortly, if roads are impacted, it could take time till roads reopen, relying on the severity and period of the impacts. Do not ever attempt to drive via a flooded roadway. 

Skagit County Emergency Info is on-line at: https://www.skagitcounty.net/Departments/EmergencyInformation/main.htm 

The map beneath exhibits areas weak to flooding (blue) and areas protected by levees or dikes that could be weak on this occasion (gray).