Weather Alert in Hawaii

Recent Locations: Santee, CA   Fairhope, PA   Kealakekua, HI  

High Surf Advisory issued February 24 at 3:21AM HST until February 24 at 6:00PM HST by NWS Honolulu HI

AREAS AFFECTED: Maui Leeward West; Kohala; Molokai West; Lanai Windward

DESCRIPTION: ...HIGH SURF WARNING FOR NORTH AND EAST FACING SHORES OF NIIHAU KAUAI OAHU MOLOKAI MAUI AND BIG ISLAND THROUGH THIS AFTERNOON... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF MOLOKAI MAUI AND BIG ISLAND AND FOR NORTH FACING SHORES OF LANAI THROUGH THIS AFTERNOON... .A long period north-northeast (010-030 degrees) has peaked overnight and will hold through the morning hours, producing much larger than normal surf across some coastlines, especially in windward areas. The swell will gradually decline late this afternoon through Friday. * WHAT...Along west facing shores of the Big Island in the Kohala Districts, surf peaking at 7 to 10 feet before declining late this afternoon. Along west facing shores of Maui, surf peaking at 12 to 16 feet. Along west facing shores of Molokai and north facing shores of Lanai, surf peaking at 12 to 16 feet this morning before slowly declining late this afternoon. * WHERE...West facing shores of Molokai, Maui, and Big Island and for north facing shores of Lanai. * WHEN...Until 6 PM HST this evening. * 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

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

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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