Weather Alert in California
Special Weather Statement issued July 30 at 7:47AM PDT by NWS Eureka CA
AREAS AFFECTED: Northern Humboldt Coast; Southwestern Humboldt; Mendocino Coast
DESCRIPTION: ...TSUNAMI WARNING IS IN EFFECT FOR COASTAL DEL NORTE... ...TSUNAMI ADVISORY IS IN EFFECT FOR THE HUMBOLDT AND MENDOCINO COAST... ** 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... 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 Bragg3 Hours * FORECAST PEAK TSUNAMI WAVE HEIGHTS... Fort Bragg 0.7 to 1.4 ft Humboldt Bay Around 1 ft. * OBSERVED TSUNAMI WAVE HEIGHTS FROM EARLIER... Tsunami waves are startingto arrive on the West Coast. Up to 4.0 ft observed in Crescent City Up to 1.2 ft observed in Humboldt Bay Up to 3.0 ft observed in Arena Cove * PRELIMINARY EARTHQUAKE INFORMATION... An earthquake occurred with a preliminary magnitude of 8.8. * TIDE INFORMATION... Humboldt Bay North Spit...Low tides of 1.8 ft at 1008 PM PDT on Jul 30, and 2.1 ft at 935 AM PDT on Jul 31. High tides of 6.2 ft at 343 PM PDT on Jul 30, and 4.7 ft at 358 AM PDT on Jul 31. 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 Cirrocumulus Clouds?
Home - Education - Cloud Types - Cirrocumulus Clouds
Next Topic: Cirrostratus Clouds
Cirrocumulus clouds form at high altitudes (usually around 5 km)
and have distinguishing characteristics displayed in a fine layer of
small cloud patches. These small cloud patches are sometimes referred to as
"cloudlets" in relation to the whole cloud formation.
Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the
water droplets in the cloud freeze into ice crystals and the cloud becomes a
cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud
formations generally pass rapidly.
Next Topic: Cirrostratus Clouds
Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
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