Weather Alert in Oregon
Red Flag Warning issued August 23 at 5:38PM PDT until August 25 at 9:00PM PDT by NWS Pendleton OR
AREAS AFFECTED: Central Mountains of Oregon; Northern Deschutes National Forest
DESCRIPTION: ...HOT, DRY, AND UNSTABLE CONDITIONS EXPECTED IN CENTRAL OREGON OVER THE NEXT TWO DAYS... .Hot conditions, combined with low relative humidities and an unstable air mass, have the potential to create significant, plume-dominated fire growth in the area surrounding the Flat Fire. Unstable conditions will relent overnight, however relative humidity recoveries are expected to be poor. The National Weather Service in Pendleton has issued a Red Flag Warning for hot, dry, and unstable conditions, which is in effect from noon Sunday to 9 PM PDT Monday. * AFFECTED AREA...Eastern portion of Fire Weather Zones 700 Central Mountains of Oregon and western portion of 704 Northern Deschutes National Forest, primarily including areas around the Flat Fire. * TIMING...From noon Sunday to 9 PM PDT Monday. * MIXING HEIGHT...As high as 8,000 ft AGL Sunday and 11,500 ft AGL Monday. * RELATIVE HUMIDITY...As low as 15 percent. * IMPACTS...A dry and unstable air mass with warm temperatures can contribute to active fire behavior.
INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.
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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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