Weather Alert in Oregon
Freezing Fog Advisory issued February 5 at 8:25PM PST until February 6 at 10:00AM PST by NWS Pendleton OR
AREAS AFFECTED: Foothills of the Southern Blue Mountains of Oregon
DESCRIPTION: * WHAT...Visibility one half mile or less in freezing fog. * WHERE...Foothills of the Southern Blue Mountains of Oregon. * WHEN...Until 10 AM PST Friday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Road cams near Fossil on OR-218 show very obscured roads as of this evening. Other parts of the Southern Foothills could see areas of freezing fog. Drivers should prepare for the possibility of sudden visibility changes. Freezing temperatures overnight could make roads slick. Use extra pre-caution.
INSTRUCTION: If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
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Weather Topic: What are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
Next Topic: Cumulus Clouds
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
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