Flash Flood Warning 4, NWS Honolulu, HI

153 
WGHW70 PHFO 161810
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
810 AM HST SUN FEB 16 2014

HIC007-161945-
/O.CON.PHFO.FF.W.0004.000000T0000Z-140216T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KAUAI HI-
810 AM HST SUN FEB 16 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF KAUAI IN
KAUAI COUNTY UNTIL 945 AM HST...

AT 748 AM HST...RADAR REVEALED LOCALLY HEAVY RAIN CONTINUING TO 
AFFECT MAINLY THE EASTERN PORTION OF KAUAI. GAGE AT WAILUA RIVER 
INDICATED RIVER STAGE HAS RISEN RAPIDLY TO 13 FEET IN THE PAST HOUR 
WHILE GAGE AT HANALEI RIVER INDICATED A RIVER STAGE NEAR 7 FEET FOR 
THE PAST HOUR. AT 730 AM HST...A WEATHER SPOTTER NEAR WAILUA 
REPORTED HEAVY RAIN WITH RAIN RATE OF ABOUT 1.2 INCHES PER HOUR.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO THE ENTIRE 
ISLAND OF KAUAI.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.

DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.

&&

THIS WARNING MAY NEED TO BE EXTENDED BEYOND 945 AM HST IF FLASH
FLOODING PERSISTS.

LAT...LON 2208 15988 2235 15943 2202 15917 2175 15956

$$

HUI

149 
WGHW70 PHFO 161939
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
939 AM HST SUN FEB 16 2014

HIC007-161948-
/O.EXP.PHFO.FF.W.0004.000000T0000Z-140216T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KAUAI HI-
939 AM HST SUN FEB 16 2014

...THE FLASH FLOOD WARNING HAS EXPIRED FOR THE ISLAND OF KAUAI IN
KAUAI COUNTY...

WEATHER RADAR AND RAIN GAGES SHOWED THAT THE HEAVY RAINS HAVE ENDED.
THUS THE FLASH FLOOD WARNING IS ALLOWED TO EXPIRE.

ALTHOUGH THE HEAVY RAINS AND FLOODING HAVE SUBSIDED...BUT HEAVY 
PONDING OF ROADWAYS IS STILL OCCURRING AND STREAMS WILL REMAIN HIGH 
FOR SEVERAL HOURS.

LAT...LON 2208 15988 2235 15943 2202 15917 2175 15956

$$

HUI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
405 AM HST SUN FEB 16 2014

.SYNOPSIS...
LOW PRESSURE WEST OF THE AREA WILL PRODUCE A CLOUDY AND WET
WEATHER PATTERN OVER THE WEST END OF THE STATE OVER THE NEXT FEW
DAYS. LOCALLY HEAVY RAINFALL IS POSSIBLE TODAY AND TONIGHT MAINLY
FOR KAUAI. SOME IMPROVEMENT IS EXPECTED TOWARDS THE END OF THE
WEEK AS HIGH PRESSURE BEGINS TO BUILD IN FROM THE NORTH.

&&

.DISCUSSION...
WATER VAPOR IMAGERY SHOWS AN UPPER LOW CENTERED AT 24N170W...OR
700 MILES WEST OF KAUAI THIS MORNING. THE ASSOCIATED SURFACE LOW
IS LOCATED ABOUT IN THE SAME PLACE. THIS STACKED SYSTEM IS DRIVING
THE UNSETTLED WEATHER ACROSS THE WESTERN END OF THE STATE THIS
MORNING. INFRARED SATELLITE SHOWS A SWATH OF LAYERED CLOUD COVER
OVER THE SMALLER ISLANDS...AND CIRRUS CLOUDS COVERING THE BIG
ISLAND. RADAR SHOWS STRATIFORM RAIN...WITH A FEW EMBEDDED HEAVIER
RAIN BANDS TRACKING UP FROM THE SOUTH ACROSS KAUAI AND NIIHAU.
THIS RAIN WILL LIKELY SPREAD TO OAHU LATER TODAY. EXPECT THE MOST
INTENSE RAIN TO OCCUR THIS AFTERNOON AND TONIGHT ACROSS THE
WESTERN PORTION OF THE STATE...THEN LINGER THROUGHOUT MONDAY AND
TUESDAY FOR ALL OF THE SMALLER ISLANDS.

SOUNDINGS FROM THIS MORNING SHOW PRECIPITABLE WATER /PW/ VALUES
OF 2 INCHES AT LIHUE...AND 1.6 INCHES AT HILO. BOTH ARE ON THE WET
SIDE...BUT PARTICULARLY FOR LIHUE. THE HIGH PW VALUES WILL MAKE THE
RAINFALL EFFICIENT. A FLASH FLOOD WATCH FOR KAUAI COUNTY ALSO GOES
INTO EFFECT AT NOON TODAY THROUGH EARLY MONDAY MORNING. EXPECTING
OAHU TO BE ON THE FRINGES OF THE HEAVIER PRECIPITATION...BUT IT IS
POSSIBLE THAT THE WATCH COULD EXTEND TO OAHU DEPENDING ON HOW THE
SITUATION SHAPES UP TODAY.

SURFACE WINDS WILL BE MODERATE TO FRESH SOUTHEAST TO SOUTH...AND WILL
CONTINUE THROUGH THE MIDDLE OF THE WEEK. TERRAIN EFFECTS ON THE
RAINFALL SHOULD BE MINIMAL...HOWEVER THIS FLOW PATTERN MAY HANG UP
RAIN ALONG THE KOOLAU MOUNTAINS RESULTING IN SOME FAVORING ACROSS
THE WINDWARD SIDE AND MOUNTAINS. AS MENTIONED...THIS WEATHER
PATTERN WILL LIKELY LAST INTO WEDNESDAY...WITH LESS INTENSE RAIN
EXPECTED MONDAY THROUGH WEDNESDAY. THIS SYSTEM WILL AFFECT
KAUAI...TO A LESSER EXTENT OAHU...AND TO AN EVEN LESSER EXTENT
MAUI COUNTY.

TOWARD THE END OF THE WEEK HIGH PRESSURE IS FORECAST TO BUILD IN TO
OUR NORTH WHICH WOULD RESULT IN TRADE WINDS MAKING A RETURN. CLOUDS
AND SHOWERS WOULD TEND TO FAVOR WINDWARD AND MAUKA AREAS.

&&

.AVIATION...
AIRMET SIERRA FOR TEMPO MOUNTAIN OBSCURATION REMAINS POSTED FOR
KAUAI AND WINDWARD OAHU...WHERE ABUNDANT LOW LEVEL MOISTURE REMAINS
IN PLACE. AIRMET ZULU IS ALSO IN EFFECT FOR KAUAI AND OAHU...WITH SOME
MODERATE ICING POSSIBLE IN LAYERED MID LEVEL CLOUDINESS AND PRECIP.
THESE CONDITIONS APPEAR LIKELY TO PERSIST ACROSS WESTERN SECTIONS
OF THE STATE THROUGH TONIGHT AND SUNDAY.

TRANQUIL CONDITIONS WITH PREVAILING VFR ARE EXPECTED ACROSS MAUI AND
THE BIG ISLAND. WIDELY SCATTERED SHOWERS AND ISOLATED MVFR CIGS WILL
BE CONFINED MAINLY TO THE PUNA AND HILO DISTRICTS ON THE WINDWARD
BIG ISLAND.

&&

.MARINE...
A SMALL CRAFT ADVISORY HAS BEEN EXTENDED THROUGH TODAY DUE TO
STRONG SOUTHEAST WINDS AROUND KAUAI. THE WINDS ARE EXPECTED TO
WEAKEN TONIGHT. SOUTH AND SOUTHEAST WILL CONTINUE INTO THE MIDDLE
OF THIS WEEK.

A SERIES OF NORTHWEST SWELLS WILL ARRIVE THIS WEEK...BUT SURF
HEIGHTS GENERATED ARE EXPECTED TO REMAIN BELOW HIGH SURF ADVISORY
LEVELS.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH FROM NOON HST TODAY THROUGH LATE TONIGHT FOR
NIIHAU-KAUAI.

SMALL CRAFT ADVISORY UNTIL 6 PM HST THIS EVENING FOR KAUAI
NORTHWEST WATERS-KAUAI WINDWARD WATERS-KAUAI LEEWARD WATERS-
KAUAI CHANNEL.

&&

FOSTER