Weather Alert in California
Flood Advisory issued July 18 at 2:09PM PDT until July 18 at 5:00PM PDT by NWS Los Angeles/Oxnard CA
AREAS AFFECTED: Los Angeles, CA
DESCRIPTION: * WHAT...Minor debris flows along with rock and mud slides. Minor flooding caused by excessive rainfall is expected. * WHERE...A portion of southwest California, including the following locations, southeastern portions of the Bridge Burn Scar in northeast Los Angeles County. * WHEN...Until 500 PM PDT. * IMPACTS...Minor debris flows consisting of rock, mud, and debris. Minor landslides. Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 204 PM PDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Some locations that will experience flooding include... mainly rural areas of Eastern Los Angeles County that include southeastern portions of the Bridge Burn Scar in northeast Los Angeles. - http://www.weather.gov/safety/flood
INSTRUCTION: Be aware of your surroundings and do not drive on flooded roads. Residents living in or immediately downstream of heavy rains should closely monitor the latest information from the National Weather Service. Be prepared to take immediate precautions to protect life and property, and be prepared to quickly move away from the burn area only if it is safe to do so. Minor flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks.
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Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
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
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