Back to All Alerts
🟡 Moderate
Dense Fog Advisory
Northern Blue Mountains of Oregon; Southern Blue Mountains of Oregon
Dense Fog Advisory issued October 31 at 11:41PM PDT until November 1 at 12:00PM PST by NWS Pendleton OR
Alert Description
* WHAT...Visibility of one-quarter mile or less in dense fog. * WHERE...Blue Mountains of Oregon. * WHEN...Until noon PST Sunday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Near-zero visibility is occurring and forecast along portions of the main routes across the Blue Mountains, including but not limited to Interstate 84, Highway 395, and Highway 204.
Safety Instructions
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Time Information
Effective
Nov 1, 2026, 6:41 AM
Expires
Nov 1, 2026, 8:00 PM
Issued
Nov 1, 2026, 6:41 AM
Alert Details
Severity
Moderate
Urgency
Expected
Certainty
Likely
Category
Met
Issued By
NWS Pendleton OR
National Weather Service