Weather Alert in California
Special Weather Statement issued July 30 at 4:52AM PDT by NWS Eureka CA
AREAS AFFECTED: Coastal Del Norte
DESCRIPTION: ...TSUNAMI WARNING IS IN EFFECT FOR COASTAL DEL NORTE... ...TSUNAMI ADVISORY IS IN EFFECT FOR THE HUMBOLDT AND MENDOCINO COAST... * UPDATES... The Humboldt County Coast is no longer in a warning. Tsunami wave impacts are ongoing on the coast but may be starting to lessen. * LOCAL IMPACTS... A tsunami with significant widespread inundation is expected, with possible and dangerous coastal flooding accompanied by powerful currents. Some damage has been reported around the Crescent City Harbor. * RECOMMENDED ACTIONS... If you are located in this coastal area, move to higher ground. Stay out of the water, off the beach and away from harbors, marinas and bays. 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 Bragg9 Hours Crescent City30 Hours * FORECAST PEAK TSUNAMI WAVE HEIGHTS... Fort Bragg 0.7 to 1.4 ft Crescent City 2.7 to 5.0 ft Humboldt Bay Around 1 ft. * OBSERVED TSUNAMI WAVE HEIGHTS FROM EARLIER... Tsunami waves are startingto arrive on the West Coast. Up to 3.6 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. Crescent City Harbor...Low tides of 1.8 ft at 1002 PM PDT on Jul 30, and 2.1 ft at 927 AM PDT on Jul 31. High tides of 6.3 ft at 329 PM PDT on Jul 30, and 4.7 ft at 349 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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