Flash Flood Warning 29, NWS Honolulu, HI

000
WGHW70 PHFO 021548
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
544 AM HST THU MAR 2 2006

HIC003-021700-
ISLAND OF OAHU IN HONOLULU COUNTY-
544 AM HST THU MAR 2 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF OAHU IN
HONOLULU COUNTY UNTIL 700 AM HST...

AT 536 AM HST...POLICE REPORTED WATER ON THE ROADS ALONG THE 
WINDWARD SIDE OF OAHU FROM KAHUKU TO KANEOHE. KAMEHAMEHA HIGHWAY 
WAS BECOMING IMPASSABLE NEAR WAIKANE AND POLICE WERE CLOSING THE 
ROAD. HEAVY RAIN WILL CONTINUE.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
KAHUKU...LAIE...HAUULA AND PUNALUU.

EXCESSIVE RUNOFF WILL CAUSE FLASH FLOODING OF STREAMS AND COULD ALSO 
TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.

MOTORISTS SHOULD BE ALERT FOR FLOODING AND SHOULD NOT ATTEMPT TO
CROSS FAST FLOWING OR RISING WATER. MANY FLASH FLOOD DEATHS OCCUR
WHEN MOTORISTS TRY CROSSING FLOODED ROADWAYS. TURN AROUND...DON/T
DROWN.

ESCAPE RISING WATER BY CLIMBING DIRECTLY TO HIGHER GROUND. NEVER TRY
TO OUTRACE A FLOOD...EITHER ON FOOT OR IN YOUR VEHICLE. DO NOT CAMP
NEAR STREAMS OR OTHER AREAS SUBJECT TO FLOODING.

A FLASH FLOOD WATCH CONTINUES FOR OAHU...KAUAI AND NIIHAU THROUGH 
THIS AFTERNOON.

STAY TUNED TO NOAA WEATHER RADIO OR OTHER LOCAL MEDIA SOURCES FOR THE
LATEST SEVERE WEATHER INFORMATION. REPORT FLOODING TO THE POLICE OR
CIVIL DEFENSE OFFICIALS FOR RELAY TO THE NATIONAL WEATHER SERVICE.

THE FLASH FLOOD WARNING MAY NEED TO BE EXTENDED BEYOND 700 AM HST IF
FLASH FLOODING CONDITIONS PERSIST.

LAT...LON 2134 15785 2139 15775 2174 15795 2170 15804

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
400 AM HST THU MAR 2 2006

.SYNOPSIS...
A TROUGH WEST OF THE ISLANDS CONTINUES TO CREATE MOIST SOUTHEAST
FLOW AND UNSTABLE CONDITIONS. THE TROUGH IS BRINGING A THREAT OF
HEAVY RAIN OVER OAHU AND KAUAI COUNTY AND PRODUCING CLOUDY SKIES
OVER ALL THE ISLANDS. UNSETTLED WEATHER WILL CONTINUE THROUGH
TONIGHT. THE TROUGH WILL SLOWLY MOVE WEST AND WEAKEN ALLOWING TRADE
WINDS AND DRIER WEATHER TO SPREAD WEST OVER THE ISLANDS ON FRIDAY.

&&

.DISCUSSION...
A DEEP TROUGH IS CENTERED 1100 MILES WEST NORTHWEST OF KAUAI. THE
TROUGH IS PRODUCING UNSTABLE CONDITIONS OVER THE KAUAI END OF THE
CHAIN. SOUTHEAST FLOW EAST OF THE TROUGH IS BRINGING LOTS OF
MOISTURE OVER THE ISLANDS. WITH THE SOUTHEAST FLOW...CLOUD PLUMES
ARE EXTENDING WEST NORTHWEST FROM THE BIG ISLAND AND THE ISLANDS OF
MAUI COUNTY AND MOVING OVER KAUAI AND OAHU. SOME OF THE HEAVIEST
RAINFALL HAS BEEN OCCURRING IN THESE PLUMES. HEAVY RAIN HAS ALSO
BEEN FALLING OVER NORTHEAST OAHU...WHERE THE SOUTHEAST TO NORTHWEST
ORIENTATION OF THE KOOLAU MOUNTAINS FOCUSES THE RAIN. A FLASH FLOOD
WATCH REMAINS IN EFFECT FOR KAUAI COUNTY AND OAHU.

AN UPPER LEVEL DISTURBANCE MOVING OVER THE ISLANDS HAS INCREASED THE
WINDS OVER THE HIGH MOUNTAINS OF THE BIG ISLAND SO A WIND ADVISORY
HAS BEEN ISSUED.

THE COMPUTER MODELS REMAIN CONSISTENT IN SHOWING THE TROUGH
WEAKENING AND MOVING OFF TO THE WEST. MEANWHILE...A SURFACE HIGH FAR
NORTH OF THE ISLANDS WILL MOVE SOUTHEAST. AS THE TROUGH MOVES AWAY
AND THE HIGH MOVES SOUTHEAST...THE ATMOSPHERE WILL BECOME DRIER AND
MORE STABLE AND THE LOW LEVEL FLOW WILL BACK TO A TYPICAL EAST
NORTHEAST TRADE-WIND DIRECTION. THE THREAT OF HEAVY RAIN WILL END
FRIDAY MORNING.

TRADE WIND WEATHER WILL CONTINUE THROUGH EARLY NEXT WEEK. A
SHEARLINE MAY MOVE SOUTH OVER THE ISLANDS MONDAY AND INCREASE
WINDWARD SHOWERS. BY THE MIDDLE OF NEXT WEEK...THE COMPUTER MODELS
SHOW A TROUGH REDEVELOPING WEST OF KAUAI. THE WIND MAY BRIEFLY VEER
TO EAST SOUTHEAST NEAR KAUAI AND OAHU BUT IT LOOKS LIKE TRADE WINDS
WILL SPREAD BACK OVER THE ISLANDS BY THE END OF THE WEEK.

&&

.MARINE...
A HIGH SURF ADVISORY...A SMALL CRAFT ADVISORY AND A MARINE WEATHER
STATEMENT WILL BE EXTENDED THROUGH 6 PM THURSDAY EVENING DUE TO A
LARGE NORTH NORTHEAST SWELL. MODEL GUIDANCE SHOWS THE NORTH
NORTHEAST SWELL GRADUALLY DECREASING SO WE MAY ABLE TO DROP ALL
THREE PRODUCTS BY THIS EVENING.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY UNTIL 6 PM HST THURSDAY FOR THE SUMMITS OF MAUNA KEA
AND MAUNA LOA.

HIGH SURF ADVISORY UNTIL 6 PM HST THURSDAY FOR EAST FACING SHORES
OF ALL ISLANDS EXCEPT LANAI AND KAHOOLAWE.

SMALL CRAFT ADVISORY MOST HAWAIIAN WATERS UNTIL 6 PM HST THURSDAY
FOR SEAS GREATER THAN 10 FT.

FLASH FLOOD WATCH FOR NIIHAU KAUAI AND OAHU THROUGH 4 PM THURSDAY.

&&

DONALDSON