Weather Alert in Hawaii
Red Flag Warning issued August 1 at 3:27PM HST until August 2 at 6:00PM HST by NWS Honolulu HI
AREAS AFFECTED: Niihau; Kauai South; Kauai Southwest; East Honolulu; Honolulu Metro; Ewa Plain; Waianae Coast; Oahu North Shore; Central Oahu; Waianae Mountains; Molokai North; Molokai West; Molokai Leeward South; Lanai Windward; Lanai Leeward; Lanai South; Lanai Mauka; Kahoolawe; Maui Leeward West; Maui Central Valley North; Maui Central Valley South; South Maui/Upcountry; South Haleakala; Big Island South; Big Island Southeast; Kohala; Big Island Interior
DESCRIPTION: ...RED FLAG WARNING IN EFFECT THROUGH SATURDAY AFTERNOON FOR GUSTY WINDS AND LOW HUMIDITY... .A dry and locally windy trade wind flow will produce critical fire weather conditions through Saturday afternoon. Winds will be strongest over and downwind of terrain. Winds will begin a slow decline on Sunday, though near critical fire weather conditions are expected as dry weather persists over leeward areas. * AFFECTED AREA...Leeward portions of all Hawaiian Islands and interior sections of the Big Island. * TIMING...Until 6 PM HST Saturday. * WINDS...East 15 to 30 mph with gusts up to 35 mph on Oahu and Kauai, and gusts up to 50 mph in Maui County and on the Big Island. * RELATIVE HUMIDITY...Lowering to 35 to 45 percent in the afternoon hours. * IMPACTS...A combination of strong winds, low relative humidity, and dry fuels can contribute to extreme fire behavior. Any fires that develop will likely spread rapidly. A Red Flag Warning does not predict new fire starts.
INSTRUCTION: Outdoor burning is not recommended. Heat from vehicle exhaust systems can ignite dry grass. Park cars on areas that are paved or where vegetation is trimmed and cleared. High winds contribute to wildfire hazard. Delay activities that could throw off sparks until the wind dies down. A Red Flag Warning means that critical fire weather conditions are either occurring now or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. A Red Flag Warning does not predict new fire starts.
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Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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