Weather Alert in Hawaii
High Surf Advisory issued February 24 at 3:27PM HST until February 25 at 6:00AM HST by NWS Honolulu HI
AREAS AFFECTED: Niihau; Oahu North Shore; Olomana; Maui Windward West; Kauai North; Kauai East; Koolau Windward; Molokai Windward; Molokai North; Maui Central Valley North; Windward Haleakala; Big Island East; Big Island North
DESCRIPTION: ...HIGH SURF ADVISORY FOR NORTH AND EAST FACING SHORES OF NIIHAU KAUAI AND OAHU...NORTH AND WEST FACING SHORES OF MOLOKAI MAUI AND BIG ISLAND...NORTH FACING SHORES OF LANAI THROUGH EARLY WEDNESDAY MORNING... .A long period north-northeast (010-030 degrees) peaked early this morning, producing much larger than normal surf across some coastlines, especially across windward areas. The swell will gradually decline late this afternoon through Friday. * WHAT...Along north facing shores, surf heights of 18 to 24 feet this evening, dropping to 15 to 20 feet. Along east facing shores, surf heights of 12 to 16 feet this evening, dropping to 10 to 14 feet. * WHERE...North and east facing shores of Niihau, Kauai, Oahu, Molokai, Maui, and Big Island. * WHEN...Until 6 AM HST Wednesday. * IMPACTS...Moderate. Strong breaking waves and strong currents will make swimming dangerous.
INSTRUCTION: Heed all advice from ocean safety officials. When in doubt, don't go out.
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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
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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