Flash Flood Warning 60, NWS Honolulu, HI

Issued

Mar 13, 2006, 10:30 PM HST (08:30 UTC)

Expired

Mar 14, 2006, 1:30 AM HST

In force

3 hr

Issued by

NWS Honolulu, HI

Area

Counties, with a storm outline in the text

County Kauai County, HI

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

974 
WGHW50 PHFO 140835
FFWHFO
HIC007-141130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
1030 PM HST MON MAR 13 2006

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE ISLAND OF KAUAI IN KAUAI COUNTY

* UNTIL 130 AM HST

* AT 1030 PM HST...RADAR SHOWED HEAVY RAIN OVER THE ENTIRE ISLAND 
  OF KAUAI...WITH ADDITIONAL HEAVY RAIN APPROACHING THE ISLAND FROM 
  THE SOUTH. IN ADDITION...POLICE REPORT THAT KUHIO HIGHWAY BETWEEN 
  PRINCEVILLE AND HANALEI IS CLOSED DUE TO WATER ON THE ROADWAY. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  KOKEE...KEKAHA...WAIMEA...HANAPEPE...KALAHEO...KOLOA...POIPU...
  LIHUE...WAILUA...KAPAA...ANAHOLA...KILAUEA...HANALEI...AND HAENA. 

THIS FLASH FLOOD WARNING REPLACES THE PRE-EXISTING WARNING THAT WAS
IN EFFECT FOR THE THE ISLAND OF KAUAI IN KAUAI COUNTY.

MOVE TO HIGHER GROUND NOW. STAY AWAY FROM STREAMS AND LOW LYING AREAS
PRONE TO FLOODING.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF STREAMS
AND WILL LIKELY TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.

BE ESPECIALLY CAUTIOUS SINCE IT IS HARDER TO SEE FLASH FLOODING IN
THE DARK. AVOID TRAVEL.

DO NOT TRY TO CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR
ON FOOT. THE WATER MAY BE TOO DEEP TO CROSS SAFELY. TURN AROUND...
DON/T DROWN.

REPORT FLOODING TO POLICE OR CIVIL DEFENSE OFFICIALS FOR RELAY TO THE
NATIONAL WEATHER SERVICE.

THIS FLASH FLOOD WARNING MAY NEED TO BE EXTENDED BEYOND 130 AM HST IF
FLASH FLOODING CONDITIONS PERSIST.

LAT...LON 2174 15984 2179 15910 2238 15914 2226 15985

$$

BIRCHARD

NWS Honolulu, HI wrote its last area forecast discussion before this flash flood warning went out at Mar 13, 9:15 PM HST, 1 hour 15 minutes earlier.

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HONOLULU HI
915 PM HST MON MAR 13 2006

.SYNOPSIS...
A WET PATTERN WITH A THREAT OF HEAVY RAINFALL LASTING THROUGH MOST
OF THE WEEK.

&&

.UPDATE...
HAVE UPDATED FORECAST FOR TONIGHT TO REMOVE THUNDERSTORMS ALL AREAS
AND REMOVE HEAVY RAINFALL WORDING FOR ISLANDS EAST OF OAHU. ALSO
LOWERED POPS FOR LEEWARD PORTIONS OF ISLANDS EAST OF OAHU.

&&

.DISCUSSION...
A LINE OF HEAVY SHOWERS IS CURRENTLY MOVING OVER KAUAI FROM THE
SOUTHEAST...HAVING CLIPPED OAHU WITH ITS WEAKER EASTERN PORTION A
LITTLE EARLIER. THE EARLIER FLASH FLOOD WARNING FOR WINDWARD OAHU
WAS MORE BASED ON THE APPEARANCE OF TERRAIN ANCHORED ECHOES...BUT
THOSE HAVE SINCE DISSIPATED. WITH THE DEVELOPING SOUTHEAST
FLOW...HOWEVER...THESE TERRAIN ANCHORED ECHOES COULD REDEVELOP
AGAIN ANYTIME. THE LINE OF HEAVY RAIN APPEARS TO HAVE ITS ORIGINS
IN THE BIG ISLAND PLUME...HAVING BEEN BROUGHT NORTHWARD IN THE
RECENTLY DEVELOPED SOUTHEAST FLOW ALONG THE WESTERN END OF THE
ISLAND CHAIN. IMPRESSIVE 24 HOUR PRESSURE FALLS CONTINUE STATEWIDE
THIS EVENING...WITH THE GREATEST FALLS OF 3 TO 4 MB OCCURRING OVER
KAUAI AND OAHU. WATER VAPOR IMAGERY SHOWS A SHARP UPPER TROUGH WEST
THROUGH NORTH OF KAUAI...WITH A DIGGING SHORTWAVE NEAR 31M 169W.

THE SHORT WAVE TO THE NORTHWEST IS FORECAST TO DEVELOP INTO A CUT
OFF LOW THAT WILL DIG TOWARDS THE ISLANDS IN THE TUESDAY THROUGH
THURSDAY TIME FRAME...ENHANCING THE THREAT OF HEAVY RAINFALL. INTO
FRIDAY THIS CUT OFF WILL BEGIN TO MOVE NORTHEAST...AND WILL LIKELY
PROVIDE A BRIEF RESPITE FROM THE HEAVY RAIN. IN RESPONSE TO THIS
DIGGING CUT OFF LOW...MODELS DEVELOP A TROUGH WEST OF THE ISLANDS
AND MOVE IT EASTWARD OVER THE ISLAND CHAIN...WHICH WILL ACT TO BRING
A DEEP SOUTHERLY FLOW OVER ALL ISLANDS. GFS DEVELOPS AN ENTIRE
SERIES OF LOWS ALONG THIS TROUGH ALONG THE LONGITUDE OF THE ISLANDS
AROUND MIDWEEK...AND THE OTHER GLOBAL MODELS HAVE A SIMILAR FLAVOR
AS WELL. SO WHILE IT WILL BE DIFFICULT TO PINPOINT WHEN AND WHERE
HEAVY RAINFALL WILL OCCUR THE NEXT COUPLE OF DAYS...IT IS NOT
DIFFICULT TO SAY THAT HEAVY RAINFALL WILL OCCUR...WHICH WILL LIKELY
LEAD TO FLASH FLOODING. NO CHANGES THERE.

MODELS MOVE THE DEEP LAYER LOW EAST OF THE ISLANDS TOWARDS THE END
OF THE WEEK...ALLOWING A DRYING TREND AT THAT POINT...BUT LONGER
RANGE PROGS INDICATE ANOTHER CUT OFF LOW WILL DEVELOP NORTHWEST OF
THE ISLANDS BY THE END OF THE WEEKEND.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH...ALL ISLANDS THRU THURSDAY.

&&

BIRCHARD

Flash Flood Warnings in Hawaii, 2006Every flash flood warning in 2006

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.