State: ORTotal alerts: 2Updated: Nov 4, 2026 9:20am PST
Dense Fog Advisory
Area Lower Columbia Basin of Oregon; Yakima Valley
Dense Fog Advisory issued November 4 at 7:35AM PST until November 4 at 10:00AM PST by NWS Pendleton OR
* WHAT...Visibility as low as one quarter mile in dense fog.
* WHERE...In Oregon, Lower Columbia Basin of Oregon. In Washington,
Yakima Valley.
* WHEN...Until 10 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
Dense Fog Advisory
Area Benton County Lowlands; Linn County Lowlands; Lane County Lowlands
Dense Fog Advisory issued November 4 at 3:39AM PST until November 4 at 10:00AM PST by NWS Portland OR
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Benton County Lowlands, Lane County Lowlands, and Linn
County Lowlands.
* WHEN...Until 10 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
SAFETY and DATA MESSAGE
When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.
Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Progress.
Use the Radar Maps link provided to understand the trajectory of a storm.
For more official information about severe storms and how to stay safe, visit the National Weather Service's Severe Thunderstorm Safety page. We encourage you to also monitor Excessive Rainfall Forecasts on their Weather Prediction Center website.