Weather Alerts for Oregon

Recent Locations: Tuthill, SD Elbert, CO Eugene, OR

Current Alerts for Eugene, OR: Heat Advisory

1. Extreme Heat Watch for: Lower Columbia River; Cowlitz County Lowlands

2. Extreme Heat Watch for: Tualatin Valley; Inner Portland Metro; East Portland Metro; West Central Willamette Valley; East Central Willamette Valley; West Columbia River Gorge I-84 Corridor; Upper Hood River Valley; Central Columbia River Gorge I-84 Corridor; North Clark County Lowlands; Inner Vancouver Metro; East Clark County Lowlands; West Columbia River Gorge - SR 14; Central Columbia River Gorge - SR 14

3. Extreme Heat Watch for: West Hills and Chehalem Mountains; Outer Southeast Portland Metro; West Columbia River Gorge of Oregon above 500 ft

4. Heat Advisory for: Benton County Lowlands; Linn County Lowlands; Lane County Lowlands

5. Heat Advisory for: Central Douglas County; Eastern Douglas County Foothills

6. Heat Advisory for: Eastern Columbia River Gorge of Oregon; Lower Columbia Basin of Oregon; Foothills of the Northern Blue Mountains of Oregon; Eastern Columbia River Gorge of Washington; Kittitas Valley; Yakima Valley; Lower Columbia Basin of Washington; Foothills of the Blue Mountains of Washington

7. Heat Advisory for: Lower Columbia River; Cowlitz County Lowlands

8. Heat Advisory for: Tualatin Valley; Inner Portland Metro; East Portland Metro; West Central Willamette Valley; East Central Willamette Valley; West Columbia River Gorge I-84 Corridor; Upper Hood River Valley; Central Columbia River Gorge I-84 Corridor; North Clark County Lowlands; Inner Vancouver Metro; East Clark County Lowlands; West Columbia River Gorge - SR 14; Central Columbia River Gorge - SR 14

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet