Weather Alert in California
Coastal Flood Advisory issued June 24 at 11:15AM PDT until June 25 at 1:00AM PDT by NWS Eureka CA
AREAS AFFECTED: Northern Humboldt Coast
DESCRIPTION: * WHAT...High astronomical tides will cause minor flooding in low lying areas around Humboldt Bay. Up to one quarter foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 8.6 and 8.9 feet MLLW at the North Spit tide gauge is predicted. * WHERE...Northern Humboldt Coast County. * WHEN...From 9 PM this evening to 1 AM PDT Wednesday. High tide is at 11:06 PM at the Humboldt Bay North Spit tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Flooding of low lying areas around Humboldt Bay including parks and roads with only isolated closures expected. Flooding could impact Jackson Ranch Road in the Arcata Bottoms and several roads in King Salmon.
INSTRUCTION: A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT.
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Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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