Weather Alert in California
Winter Weather Advisory issued February 17 at 9:17AM PST until February 18 at 4:00PM PST by NWS Eureka CA
AREAS AFFECTED: Coastal Del Norte; Northern Humboldt Coast
DESCRIPTION: * WHAT...Widespread small hail showers are occurring, resulting in ice accumulation and extremely slippery driving conditions. Conditions may rapidly change from rain to hail. * WHERE...Del Norte and Northern Humboldt Coast. * WHEN...Until 4 PM PST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous due to small hail. Plan on slippery road conditions. The hazardous conditions will impact the Tuesday evening and Wednesday morning commutes.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Dark clouds ahead may indicate showers containing small hail. Slow down and allow extra time if driving.
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Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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