Weather Alert in Hawaii
Flood Watch issued February 21 at 4:40PM HST until February 22 at 6:00AM HST by NWS Honolulu HI
AREAS AFFECTED: Niihau; Kauai Southwest; Kauai Mountains; Kauai North; Kauai East; Kauai South
DESCRIPTION: ...FLOOD WATCH NOW IN EFFECT THROUGH LATE TONIGHT FOR KAUAI COUNTY AND OAHU... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Niihau and Kauai. * WHEN...Through late tonight. * IMPACTS...Flood prone roads and other low lying areas may be closed due to elevated runoff and overflowing streams. Urban areas may receive more significant flooding and property damage due to rapid runoff. * ADDITIONAL DETAILS... - A vigorous upper level trough continues to slowly swing through the state this afternoon and will continue to bring unstable weather conditions through tonight. Heavy showers and isolated thunderstorms will continue to be possible overnight tonight. The trough axis should lift north of the area by Sunday morning, which should diminish the flooding threat.
INSTRUCTION: You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
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Weather Topic: What are Cumulus Clouds?
Home - Education - Cloud Types - Cumulus Clouds
Next Topic: Drizzle
Cumulus clouds are fluffy and textured with rounded tops, and
may have flat bottoms. The border of a cumulus cloud
is clearly defined, and can have the appearance of cotton or cauliflower.
Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall,
becoming cumulus congestus and possibly the even taller cumulonimbus clouds.
When cumulus clouds become taller, they have a greater chance of producing precipitation.
Next Topic: Drizzle
Weather Topic: What is Evaporation?
Home - Education - Precipitation - Evaporation
Next Topic: Fog
Evaporation is the process which returns water from the earth
back to the atmosphere, and is another crucial process in the water cycle.
Evaporation is the transformation of liquid into gas, and it happens because
molecules are excited by the application of energy and turn into vapor.
In order for water to evaporate it has to be on the surface of a body of water.
Next Topic: Fog
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