Weather Alert in Delaware
High Surf Advisory issued August 20 at 4:15PM EDT until August 22 at 6:00PM EDT by NWS Mount Holly NJ
AREAS AFFECTED: Delaware Beaches
DESCRIPTION: * WHAT...For the High Surf Advisory, large breaking waves of 7 to 12 feet in the surf zone on Thursday and 6 to 9 feet on Friday. For the High Rip Current Risk, life-threatening rip currents. For the Coastal Flood Warning, one to two feet of inundation above ground level expected in low- lying areas near shorelines and tidal waterways. * WHERE...Delaware Beaches. * WHEN...For the High Surf Advisory, until 6 PM EDT Friday. For the High Rip Current Risk, through Friday afternoon. For the Coastal Flood Warning, until 2 AM EDT Saturday. * IMPACTS...At this level, flooding may become severe enough to cause structural damage along with widespread roadway flooding in coastal and bayside communities, and near inland tidal waterways. Some locations may become isolated by the flood waters. Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...The greatest impacts from coastal flooding are expected with the Thursday evening high tide. Locally major flooding impacts are possible.
INSTRUCTION: A Coastal Flood Warning means that moderate or major tidal flooding is occurring or imminent. Be prepared for rising water levels and take appropriate action to protect life and property. Follow the recommendations of local emergency management officials. Do not drive your vehicle through flood waters. The water may be deeper than you think it is. You will be putting yourself in danger and your vehicle may be damaged, leading to costly repairs. Visit the Advanced Hydrologic Prediction Service at water.weather.gov/ahps for additional water level and flood impact information for your local tide gauge. Inexperienced swimmers should remain out of the water due to dangerous surf conditions. Always obey posted Beach Flags. If you enter the surf zone, always have a floatation device with you and swim near a lifeguard if possible. If caught in a rip current, relax and float and do not swim against the current. If able, swim parallel to the shoreline. If unable to escape, face the shore and call or wave for help.
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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
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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