Clark County, WA
Alerts
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Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.
In effect from Saturday 10/31 8:47 AM PDT – Saturday 10/31 12:00 PM PDT
Issued by NWS Portland OR
What
Visibility one quarter mile or less in dense fog.
Where
In Oregon, East Central Willamette Valley, East Portland Metro, Inner Portland Metro, Lower Columbia River, Tualatin Valley, and West Central Willamette Valley. In Washington, East Clark County Lowlands, Inner Vancouver Metro, and North Clark County Lowlands.
When
Until noon PDT today.
Impacts
Low visibility could make driving conditions hazardous.
What to Do
If driving, slow down, use your headlights, and leave plenty of distance ahead of you. Pedestrians and cyclists should wear bright or reflective clothing to increase the chances of being seen by others in poor visibility conditions.
Areas Impacted
- Lower Columbia River
- Tualatin Valley
- Inner Portland Metro
- East Portland Metro
- West Central Willamette Valley
- East Central Willamette Valley
- North Clark County Lowlands
- Inner Vancouver Metro
- East Clark County Lowlands
Tips to Stay Safe
A Dense Fog Advisory means that thick fog is happening now or very soon. It will limit visibility to less than a quarter mile, creating dangerous travel conditions.
- Limit driving or other travel if possible.
- If driving, slow down and plan for extra travel time to reach your destination.
- Use headlights and fog lights if you have them. Do not use high-beam lights, as the glare makes it more difficult for you to see.
- Leave plenty of distance between you and other vehicles.
In effect from Saturday 10/31 8:47 AM PDT – Saturday 10/31 9:00 AM PDT
Issued by NWS Portland OR
What
Visibility one quarter mile or less in dense fog.
Where
In Oregon, East Central Willamette Valley, East Portland Metro, Inner Portland Metro, Lower Columbia River, Tualatin Valley, and West Central Willamette Valley. In Washington, East Clark County Lowlands, Inner Vancouver Metro, and North Clark County Lowlands.
When
Until noon PDT today.
Impacts
Low visibility could make driving conditions hazardous.
What to Do
If driving, slow down, use your headlights, and leave plenty of distance ahead of you. Pedestrians and cyclists should wear bright or reflective clothing to increase the chances of being seen by others in poor visibility conditions.
Areas Impacted
- Lower Columbia River
- Tualatin Valley
- Inner Portland Metro
- East Portland Metro
- West Central Willamette Valley
- East Central Willamette Valley
- North Clark County Lowlands
- Inner Vancouver Metro
- East Clark County Lowlands
Tips to Stay Safe
A Frost Advisory means that your area is likely to see frost developing overnight, which can harm young or vulnerable plants. Cover these plants before the sun goes down to help them retain heat.
In effect from Saturday 10/31 5:33 AM PDT – Saturday 10/31 11:00 AM PDT
Issued by NWS Portland OR
Areas of fog, some locally dense, have developed early this morning the Willamette Valley, Upper Hood River Valley, and southwest Washington lowlands, resulting in roadway visibility of one mile or less. Morning commuters should expected to encounter areas of rapidly changing visibility. Freezing fog is also possible this morning where temperatures have fallen below freezing.
If driving, slow down, use your headlights, and leave plenty of distance ahead of you. If walking or cycling, wear bright or reflective clothing and carry a light to increase your visibility to drivers.
Areas Impacted
- Tualatin Valley
- Inner Portland Metro
- West Central Willamette Valley
- East Central Willamette Valley
- Benton County Lowlands
- Linn County Lowlands
- Lane County Lowlands
- Upper Hood River Valley
- North Clark County Lowlands
- Inner Vancouver Metro
Briefings
From the Forecaster
Seven-day Weather Risk Overview
The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.
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