Weather Alert in California
Special Weather Statement issued July 29 at 6:59PM PDT by NWS Eureka CA
AREAS AFFECTED: Coastal Del Norte; Northern Humboldt Coast; Southwestern Humboldt; Mendocino Coast
DESCRIPTION: ...TSUNAMI ADVISORY IS IN EFFECT FOR DEL NORTE, HUMBOLDT, AND MENDOCINO COUNTIES... * LOCAL IMPACTS... A tsunami capable of producing strong currents that may be hazardous to swimmers, boats, and coastal structures is expected. Widespread inundation is NOT expected. * RECOMMENDED ACTIONS... If you are located in this coastal area, move off the beach and out of harbors and marinas. Do not go to the coast to watch the tsunami. Be alert to instructions from your local emergency officials * FORECAST TSUNAMI START TIMES... Fort Bragg California 1150 PM PDT on Jul 29 Crescent City California 1155 PM PDT on Jul 29 Tsunamis often arrive as a series of waves or surges which could be dangerous for many hours after the first wave arrival. The first tsunami wave or surge may not be the highest in the series. * FORECAST TSUNAMI DURATION... Fort Bragg California 9 hrs Crescent City California 36 hrs * FORECAST PEAK TSUNAMI WAVE HEIGHTS... Fort Bragg California 0.8 to 1.5 ft Crescent City California 3.1 to 5.7 ft * PRELIMINARY EARTHQUAKE INFORMATION... An earthquake occurred with a preliminary magnitude of 8.7 occurred 80 mile southeast of Petropavlovsk Kamchatka. * TIDE INFORMATION... Humboldt Bay North Spit...Low tides of 1.3 ft at 901 AM PDT on Jul 30, and 1.8 ft at 1008 PM PDT on Jul 30. High tides of 5.2 ft at 259 AM PDT on Jul 30, and 6.2 ft at 343 PM PDT on Jul 30. Crescent City Harbor...Low tides of 1.3 ft at 854 AM PDT on Jul 30, and 1.8 ft at 1002 PM PDT on Jul 30. High tides of 5.2 ft at 249 AM PDT on Jul 30, and 6.3 ft at 329 PM PDT on Jul 30. This product will be updated as new information becomes available. Stay tuned to your local news source and NOAA weather radio for further information and updates.
INSTRUCTION: N/A
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Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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
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