Areas of dense fog reducing visibility as low as one quarter mile
will persist across many areas especially above about 2000 ft
through the duration of the afternoon and into the evening. By the
evening and overnight, many of these areas of dense fog will
expand to lower elevations, becoming more widespread, especially
for areas along the foothills of the Blue Mountains.

Motorists should be prepared for dense fog expanding overnight,
potentially creating a travel hazard well into the late morning
on Friday.

WHAT: Visibility one half mile or less in freezing fog.

WHERE: Central Oregon.

WHEN: Until 10 AM PST Friday.

IMPACTS: Low visibility could make driving conditions hazardous.

ADDITIONAL DETAILS: Freezing temperatures overnight could make
roads slick. Use extra pre-caution.

Oregon Department of Environmental Quality has issued an Air Quality
Advisory until noon PST Saturday.

For the Air Quality Advisory, stagnant air conditions will trap
smoke and other air pollutants near the ground where people breathe.

Check with your local health or air agency for current restrictions
on woodstove use. There are often exceptions for those who use wood
exclusively to heat their homes and those with limited income.

People can take the following precautions to protect their health:

* Follow local burn restrictions to prevent deteriorating air
quality.
* Avoid strenuous outdoor activity in smoky conditions.
* People with heart or lung problems and young children are
especially vulnerable. These people should stay indoors while
smoke levels are high.
* Use certified High Efficiency Particulate Air (HEPA) filters in
indoor heating ventilation, cooling, and air purification systems.
* Avoid using wood-burning stoves and other sources of indoor smoke
if possible.

For additional information...please visit the Web site at
http://www.oregon.gov/DEQ