Weather Alert in Oregon
Special Weather Statement issued August 21 at 1:57PM PDT by NWS Portland OR
AREAS AFFECTED: East Portland Metro; West Columbia River Gorge of Oregon above 500 ft; West Columbia River Gorge I-84 Corridor; Central Columbia River Gorge I-84 Corridor; East Clark County Lowlands; West Columbia River Gorge - SR 14; Central Columbia River Gorge - SR 14; South Washington Cascades
DESCRIPTION: Breezy easterly winds will develop Friday morning and continue through Friday evening for the eastern Portland/Vancouver metro, and through Friday night for the Columbia River Gorge and adjacent Cascade ridgetops. Winds will be strongest on exposed ridgetops where wind gusts will most likely peak between 25-35 mph. Elsewhere, expect wind gusts between 15-20 mph, except up to 30 mph in the western Columbia River Gorge. The breezy east winds will occur simultaneously with low relative humidity values of 20-30% or less, resulting in near critical fire weather conditions. Use extra caution with potential ignition sources, especially in grassy areas. Outdoor burning is not recommended.
INSTRUCTION: N/A
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Weather Topic: What is Drizzle?
Home - Education - Precipitation - Drizzle
Next Topic: Evaporation
Drizzle is precipitation in the form of water droplets which are
smaller than raindrops.
Drizzle is characterized by fine, gently falling droplets and typically does not
impact human habitation in a negative way. The exception to this is freezing drizzle,
a condition where drizzle freezes immediately upon reaching earth's surface.
Freezing drizzle is still less dangerous than freezing rain, but can
potentially result in hazardous road conditions.
Next Topic: Evaporation
Weather Topic: What is Fog?
Home - Education - Cloud Types - Fog
Next Topic: Fractus Clouds
Fog is technically a type of stratus cloud, which lies along the
ground and obscures visibility.
It is usually created when humidity in the air condenses into tiny water droplets.
Because of this, some places are more prone to foggy weather, such as regions
close to a body of water.
Fog is similar to mist; both are the appearance of water droplets suspended in
the air, but fog is the term applied to the condition when visibility is less than 1 km.
Next Topic: Fractus Clouds
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