Weather Alert in Hawaii
High Surf Warning issued February 6 at 3:36PM HST until February 7 at 6:00PM HST by NWS Honolulu HI
AREAS AFFECTED: Maui Windward West; Maui Central Valley North; Windward Haleakala
DESCRIPTION: ...HIGH SURF WARNING FOR NORTH AND WEST FACING SHORES OF NIIHAU KAUAI OAHU AND MOLOKAI AND FOR NORTH FACING SHORES OF MAUI THROUGH 6 PM HST SATURDAY... ...HIGH SURF ADVISORY FOR WEST FACING SHORES OF THE BIG ISLAND FROM 6 AM HST SATURDAY THROUGH 6 PM HST SATURDAY... .A large west-northwest to northwest swell (295-315 degrees) will build down the island chain through the evening and peak late tonight into early Saturday. The swell will decline sharply Saturday afternoon and evening, with surf expected to fall below headline levels by Sunday morning. * WHAT...Along north facing shores of Maui, surf building to 18 to 25 feet tonight and continuing into Saturday morning. * WHERE...North facing shores of Maui. * WHEN...Until 6 PM HST Saturday. * IMPACTS...High. Expect very strong breaking waves and powerful currents. Waves breaking in channel entrances may make navigating the channels dangerous.
INSTRUCTION: Stay away from the shoreline along the affected coasts. Be prepared for road closures. Postpone entering or leaving channels affected by the high surf until the surf subsides.
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Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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