Weather Alert in California
Flood Advisory issued March 13 at 12:36PM PDT until March 13 at 2:33PM PDT by NWS San Diego CA
AREAS AFFECTED: San Bernardino, CA
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of Southwest California, including the following county, San Bernardino. From north of Chino and Redlands to the foothills of the San Bernardino mountains. * WHEN...Until 233 PM PDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 1233 PM PDT, Doppler radar indicated moderate rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.75 and 1.25 inches of rain have fallen over the past 12 hours. - Additional rainfall amounts of 0.25 to 0.5 inches are expected over the area. This additional rain will result in minor flooding. Rainfall rates of 0.20-0.30 inches per hour are expected. - Some locations that will experience flooding include... San Bernardino, Fontana, Ontario, Rialto, Chino, Redlands, Rancho Cucamonga, Upland, Highland and Colton. - https://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
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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
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
