2 advisories are in effect for San Juan County, WA. The most serious is a wind advisory.
Since 2016 the National Weather Service has issued about 385 alerts that included San Juan County, roughly 39 a year. The most common is the wind advisory (163 from 2016 to 2025). No tornado warnings were recorded here in that period.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
* WHAT...Southeast winds 20 to 30 mph with gusts up to 55 mph
expected.
* WHERE...San Juan County.
* WHEN...Until 4 AM PST Sunday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* ADDITIONAL DETAILS...Winds will be strongest tonight.
What to do: Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.
Secure outdoor objects.
San Juan County; Lowlands of Western Whatcom CountyUntil · NWS Seattle WA
COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY
Full alert text
* WHAT...Minor coastal flooding. Inundation of 1.75 to 2.25 feet
above ground level is possible along shorelines and low-lying
coastal areas.
* WHERE...San Juan County and Lowlands of Western Whatcom County
zones.
* WHEN...Until noon PST today.
* IMPACTS...Minor coastal flooding due to tidal overflow is
expected around high tide. This may lead to flooding of
parking lots, parks, and roads, with only isolated road
closures expected.
What to do: If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Inundation above ground level refers to the height above the Mean
Higher High Water (MHHW) level.
Map data: NWS, OpenFreeMap, OpenStreetMap
Recent alerts in San Juan County
Issued
Alert
Area
Nov 14, 10:43 AM EST
Coastal Flood Advisory
San Juan County; Lowlands of Western Whatcom County
Nov 14, 7:29 AM EST
Wind Advisory
Northern Washington Coast; Grays Harbor County Coast
San Juan County alert history
Alert events that included San Juan County or its forecast zones, from the NWS warning archive.