Flash Flood Warning 28, NWS Honolulu, HI

356 
WGHW70 PHFO 140211
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
411 PM HST SAT DEC 13 2008

HIC003-140345-
/O.CON.PHFO.FF.W.0028.000000T0000Z-081214T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OAHU IN HONOLULU COUNTY-
411 PM HST SAT DEC 13 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF OAHU IN
HONOLULU COUNTY UNTIL 545 PM HST...

LINES OF HEAVY SHOWERS CONTINUE TO MOVE OVER THE ISLAND OF OAHU. THE 
SHOWERS ARE MOVING TOWARDS THE NORTH AT 30 MPH AND ARE EXPECTED TO 
CONTINUE INTO THIS EVENING. RAIN GAUGES AND RADAR INDICATE HOURLY 
RAINFALL RATES OF 1 TO 3 INCHES PER HOUR. THERE ARE VARIOUS ROAD 
CLOSURES ALONG THE LEEWARD COAST ON FARRINGTON HIGHWAY AND WAIALUA 
BEACH ROAD ON THE NORTH SHORE.

ALL LOCATIONS ON THE ISLAND OF OAHU ARE INCLUDED IN THE WARNING.

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 545 PM HST IF FLASH
FLOODING PERSISTS.

RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP
TERRAIN.

LAT...LON 2160 15831 2175 15798 2146 15773 2126 15762
      2128 15789 2126 15815

$$
DEJESUS

644 
WGHW50 PHFO 140342
FFWHFO
HIC003-140645-
/O.EXT.PHFO.FF.W.0028.000000T0000Z-081214T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
542 PM HST SAT DEC 13 2008

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  THE ISLAND OF OAHU IN HONOLULU COUNTY

* UNTIL 845 PM HST

* AT 532 PM HST...RADAR AND RAIN GAUGES CONTINUE TO SHOW MODERATE TO 
  HEAVY RAIN MOVING OFF OF OAHU. RAIN RATES HAVE DECREASED TO 1 TO 2 
  INCHES PER HOUR AND SHOULD DIMINISH FURTHER FOR A BRIEF PERIOD. 
  MORE HEAVY RAIN IS APPROACHING FROM THE SOUTHWEST AND SHOULD REACH 
  OAHU WITHIN 1 TO 2 HOURS. THERE ARE VARIOUS ROAD CLOSURES ALONG 
  THE LEEWARD COAST ON FARRINGTON HIGHWAY AND WAIALUA BEACH ROAD ON 
  THE NORTH SHORE.

* ALL LOCATIONS ON THE ISLAND OF OAHU ARE INCLUDED IN THE WARNING.

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

RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP
TERRAIN.

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 845 PM HST IF FLASH
FLOODING PERSISTS.

LAT...LON 2160 15831 2175 15798 2146 15773 2126 15762
      2128 15789 2126 15815

$$
DEJESUS

097 
WGHW70 PHFO 140520
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
720 PM HST SAT DEC 13 2008

HIC003-140645-
/O.CON.PHFO.FF.W.0028.000000T0000Z-081214T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OAHU IN HONOLULU COUNTY-
720 PM HST SAT DEC 13 2008

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR OAHU UNTIL 845 PM HST...

AT 720 PM...RADAR SHOWED HEAVY SHOWERS FROM NEAR WAHIAWA TO 
KAPOLEI...AND MORE HEAVY SHOWERS OVER THE SOUTHEAST PART OF OAHU 
FROM WAIMANALO TO DOWNTOWN HONOLULU. THE DOWNPOURS WERE MOVING 
TOWARD THE EAST AT 20 MPH. EVEN MORE RAIN...SOMETIMES HEAVY...WILL 
BE MOVING OVER THE ISLAND THROUGH THE EVENING.

THE GROUND IS ALREADY SATURATED FROM RECENT HEAVY RAINFALL. CREEKS 
AND STREAMS CAN EASILY OVERFLOW THEIR BANKS AND BECOME RUSHING 
TORRENTS OF WATER. RUNOFF FROM THE HEAVY RAIN MAY ALSO CAUSE ROCK 
AND MUDSLIDES.

A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING. 
MOVE TO HIGHER GROUND NOW.

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

ALTHOUGH THIS FLASH FLOOD WARNING IS IN EFFECT UNTIL 845 PM...THE 
WARNING WILL BE EXTENDED BEYOND THAT TIME IF EXCESSIVE RAINFALL OR 
FLASH FLOODING CONTINUES.

LAT...LON 2160 15831 2175 15798 2146 15773 2126 15762
      2128 15789 2126 15815

$$

R BALLARD

188 
WGHW70 PHFO 140642
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
842 PM HST SAT DEC 13 2008

HIC003-140649-
/O.EXP.PHFO.FF.W.0028.000000T0000Z-081214T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OAHU IN HONOLULU COUNTY-
842 PM HST SAT DEC 13 2008

...FLASH FLOOD WARNING FOR OAHU WILL BE ALLOWED TO EXPIRE ON 
SCHEDULE AT 845 PM...

...A FLASH FLOOD WATCH FOR OAHU REMAINS IN EFFECT TONIGHT...

EARLIER HEAVY DOWNPOURS OVER THE ISLAND HAVE EASED. HOWEVER...AT 
845 PM RADAR SHOWED MODERATE TO LOCALLY HEAVY RAIN EXTENDING 
SOUTHWESTWARD FROM OAHU. SOME OF THE HEAVIER SHOWERS COULD MOVE 
ASHORE OVERNIGHT. REMAIN VIGILANT AND STAY AWAY FROM FLOOD PRONE 
AREAS. CREEKS AND STREAMS WILL CONTINUE TO RUN HIGH.

LAT...LON 2160 15831 2175 15798 2146 15773 2126 15762
      2128 15789 2126 15815

$$

R BALLARD

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
1000 AM HST SAT DEC 13 2008

.SYNOPSIS...
A MOIST AND UNSTABLE AIR MASS WILL PERSIST ACROSS THE STATE THROUGH
THE WEEKEND AND INTO THE NEXT WEEK. EPISODES OF HEAVY RAINFALL WILL
REMAIN POSSIBLE THIS WEEKEND...MAINLY ACROSS KAUAI AND OAHU.

&&

.DISCUSSION...
THE LOW PRESSURE SYSTEM BRINGING WET AND UNSETTLED WEATHER TO HAWAII
MOVED TO THE NORTH A LITTLE OVER THE LAST SEVERAL HOURS. THE LOW IS
NEAR 43N 172W THIS MORNING. A STATIONARY FRONT ASSOCIATED WITH THE
LOW IS DEPICTED ON SATELLITE AS A NEARLY NORTH TO SOUTH ORIENTED
CLOUD BAND. THE SOUTHERN PORTION OF THE CLOUD BAND IS DRAPED OVER
KAUAI AND NIIHAU WHERE IT HAS BEEN BRINGING RAIN OVERNIGHT. MOST OF
THE GAGES ON KAUAI REPORTED AT LEAST 3 INCHES BETWEEN 8PM LAST NIGHT
AND 8 AM THIS MORNING. THE HIGHEST VALUE WAS AT MOUNT WAIALEALE
WHICH HAVE 9 INCHES DURING THAT TIME SPAN. THE OTHER NOTABLE VALUE
WAS THE 7.76 INCHES PICKED UP AT THE KOKEE GAGE. THE HANALEI RIVER
WENT OVER THE 7 FOOT FLOOD LEVEL OVERNIGHT AROUND 2 AM...AND HAS
REMAINED ABOVE MOST OF THE TIME SINCE. BOTH THE MAKAWELI RIVER AND
THE SOUTH FORK OF THE WAILUA RIVER ARE OVER 15 FT AS OF 9 AM.
RAINFALL RATES HAVE BEEN GENERALLY BETWEEN 1 AND 2 INCHES...BUT THE
HEAVIEST RAINS FELL AT RATES IN EXCESS OF 4 INCHES AN HOUR. THUNDER
AND LIGHTNING WERE REPORTED OVER KAUAI THROUGHOUT THE NIGHT.

THE MAIN BAND OVER KAUAI HAS SHOWN SOME SIGNS OF WEAKENING SOME OVER
THE LAST HOUR OR SO...BUT RAIN IS EXPECTED TO CONTINUE OVER THE
GARDEN ISLE FOR MUCH OF THE DAY...SO EXPECT FLOODING CONDITIONS TO
PERSIST. AN UPPER LEVEL SHORTWAVE SWINGING THROUGH IS HELPING TO
INVIGORATE THE SHOWERS...BUT IS ALSO HELPING TO PUSH THE SHOWERS TO
THE EAST. THE MODELS SHOW THE SHORT WAVE PUSHING THROUGH OVER THE
NEXT 18-24 HOURS...WHICH WILL HELP TO MOVE THE RAIN OFF OF KAUAI
EVENTUALLY...BUT WILL ALSO SHIFT THE FOCUS OF THE WET WEATHER TO THE
EAST ONCE AGAIN. AS THE RAINBAND MOVES TO THE EAST...THE MAIN LOW IS
EXPECTED TO CONTINUE TO LIFT NORTH. THE BIG QUESTION WILL BE HOW FAR
NORTH DOES THE SYSTEM LIFT AS THE SHORTWAVE MOVES THINGS TO THE
EAST. IT LOOKS LIKE OAHU WILL CERTAINLY SEE MORE RAIN THIS AFTERNOON
AND EVENING...BUT DETAILS IN TERMS OF HOW HEAVY AND PERSISTENT THE
RAIN WILL BE IS STILL A BIT SKETCHY. HAVE LEFT THE FORECAST AS IS
WITH THE THREAT MOVING OVER OAHU LATER TODAY AND THIS EVENING...BUT
OF COURSE WILL BE CLOSELY MONITORING THE SITUATION.

DESPITE THE FACT THAT THE BULK OF THE MOISTURE HAS BEEN OVER KAUAI
OVERNIGHT...THERE WERE A FEW SHOWERS THAT MOVED OVER OAHU FROM THE
SOUTH THIS MORNING. THE MAUNAWILI GAGE ON OAHU REPORTED 0.20 INCHES
BETWEEN 5 AND 8 AM.

MAUI COUNTY AND THE BIG ISLAND WILL REMAIN ON THE DRIER SIDE
TODAY...GAGES ACROSS THESE ISLANDS WERE VIRTUALLY DRY OVERNIGHT WITH
ONLY THE OHEO GULCH AND THE MAHINAHINA GAGES ON MAUI REPORTING 0.02
INCHES. RADAR SHOWS ISOLATED SHOWERS OUT THERE...AND THAT WILL
LIKELY BE THE CASE FOR A FEW MORE HOURS AT LEAST. CLOUDS MOVING OVER
MOLOKAI AND LANAI FROM THE EAST...AND OVER THE BIG ISLAND FROM THE
SOUTHEAST WILL HELP TO LIMIT ANY DAYTIME HEATING IN THOSE AREAS.
HOWEVER MAUI AND THE REMAINDER OF THE BIG ISLAND WILL STILL BE
SUSCEPTIBLE TO DAYTIME HEATING WHICH COULD LEAD TO SOME
AFTERNOON/EARLY EVENING CONVECTION. AS MENTIONED ABOVE...HOW FAR
NORTH THE LOW LIFTS AND HOW FAR EAST THE BAND MOVES TO THE EAST WITH
THE SHORTWAVE WILL GREATLY DICTATE HOW MUCH OF THE CURRENT SYSTEM
REACHES MAUI COUNTY AND THE BIG ISLAND.

FORECAST MODELS CONTINUE TO SHOW PERSISTENT TROUGHING WEST OF THE
STATE THROUGH NEXT WEEK AND MAINTAINS A MOIST SOUTH TO SOUTHEASTERLY
FLOW ACROSS THE ISLANDS. THIS COULD LEAD TO ANOTHER WET WEEK AHEAD.
DETAILS ASSOCIATED WITH THIS ARE HARD TO PIN DOWN RIGHT NOW AS IT IS
THE FINER DETAILS THE MODELS HAVE DIFFICULTY WITH...SUCH AS
TIMING...TRACK AND INTENSITY. CURRENTLY...THE MODELS SEEM TO BE
GRASPING ON TO THIS POTENTIAL SCENARIO.

&&

.MARINE...
THE SMALL CRAFT ADVISORY CONTINUES UNTIL 6 AM TOMORROW DUE TO THE
SWELL AND THE SOUTHERLY WINDS PRODUCING HAZARDOUS SEAS OF 10 FEET.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH SATURDAY NIGHT FOR NIIHAU-KAUAI-
OAHU.

SMALL CRAFT ADVISORY UNTIL 6 AM HST SUNDAY FOR KAUAI NORTHWEST
WATERS-KAUAI WINDWARD WATERS-KAUAI LEEWARD WATERS-KAUAI CHANNEL-
OAHU WINDWARD WATERS-OAHU LEEWARD WATERS

&&

MBALLARD