Weather Alert in Hawaii
High Surf Advisory High Wind Warning Wind Advisory
Flash Flood Warning issued February 7 at 7:09PM HST until February 7 at 9:00PM HST by NWS Honolulu HI
AREAS AFFECTED: Hawaii in Hawaii, HI
DESCRIPTION: At 709 PM HST, radar indicated heavy rain over the Hamakua Coast, with the heaviest rain falling between Waipio Valley and Laupahoehoe. Rain was falling at a rate of 3 to 4 inches per hour in the heaviest showers. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by heavy rain. SOURCE...Radar. IMPACT...Flooding in drainages, streams, rivers, roads, properties, and other low-lying areas. Public road closures possible in some areas. Landslides are possible in steep terrain. Some locations that will experience flash flooding include... Kapaau, Honokaa, Waipio Valley, Kamuela, Kukuihaele, Waimanu Valley, Pololu Valley, Paauilo, Kawaihae, Kohala Ranch, Halaula, Hawi, Ookala, Laupahoehoe, Ninole and Mahukona.
INSTRUCTION: Stay away from streams, rivers, drainage ditches, and culverts, even if they are currently dry. Do not cross fast flowing or rising water in your vehicle, or on foot. Turn around, don't drown. The heavy rains may cause rock and mudslides in steep terrain areas.
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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
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