Flash Flood Warning 31, NWS Honolulu, HI

Issued

Feb 28, 2004, 12:45 AM HST (10:45 UTC)

Expired

Feb 28, 2004, 3:45 AM HST

In force

3 hr

Issued by

NWS Honolulu, HI

Area

Counties, with a storm outline in the text

Counties Honolulu County, HI, 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.

000 
WGHW50 PHFO 281041
FFWHI 
HIZ004-007-008-281345-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
1245 AM HST SAT FEB 28 2004

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

* FLASH FLOOD WARNING FOR
  NORTH AND EAST HAWAII INCLUDING WINDWARD KOHALA HAMAKUA HILO AND
  PUNA
  SOUTH HAWAII INCLUDING KAU
  WEST HAWAII INCLUDING LEEWARD KOHALA AND KONA

* UNTIL 345 AM HST

* AT 1235 AM HST...RADAR INDICATED VERY HEAVY RAIN OVER MANY 
  LOCATIONS ON THE BIG ISLAND...AND ADDITIONAL HEAVY RAIN THAT WILL 
  BE MOVING OVER THE ISLAND FROM THE SOUTH.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS.

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...DO NOT
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.

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

LAT...LON 1886 15567 1956 15464 2043 15583 1979 15613
          1908 15601
$$

NWS Honolulu, HI wrote its last area forecast discussion before this flash flood warning went out at Feb 27, 8:40 PM HST, 4 hours 5 minutes earlier.

HAWAIIAN ISLANDS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
840 PM HST FRI FEB 27 2004

.SYNOPSIS...
A COLD FRONT BETWEEN OAHU AND MOLOKAI SEPARATES THE HEAVY SHOWERS
AND THUNDERSTORMS TO THE EAST OVER MAUI COUNTY AND THE BIG ISLAND
FROM MODERATE SHOWERS TO THE WEST. THE FRONT AND ALL THE BAD WEATHER
WILL MOVE TO THE EAST...ENDING UP EAST OF THE BIG ISLAND SATURDAY
NIGHT. UNSTABLE AIR WILL REMAIN OVER THE ISLANDS FOR THE NEXT
SEVERAL DAYS...PROMOTING SCATTERED SHOWERS WITH A CHANCE OF
AFTERNOON THUNDERSTORMS. TRADES ARE EXPECTED TO RETURN BY MIDWEEK.

&&

.DISCUSSION...
JUDGING BY THE DIRECTION OF THE WIND OVER OAHU AND MOLOKAI...THE
COLD FRONT IS OVER THE KAIWI CHANNEL. IT IS MOVING TO THE EAST AND
SHOULD REACH THE ALENUIHAHA CHANNEL SATURDAY MORNING. PROGS THEN
SHOW THE FRONT EAST OF THE BIG ISLAND SATURDAY NIGHT. HEAVY SHOWERS
AND THUNDERSTORMS AND STRONG SOUTH WINDS WILL SHIFT EASTWARD AHEAD
OF THE FRONT...TO BE REPLACED BY THE DRYER AND LESS WINDY WEATHER
BEHIND THE FRONT.

THE FRONT IS ASSOCIATED WITH A SURFACE LOW NOW ABOUT 225 MILES NORTH
OF KAUAI. AN UPPER LOW LOCATED ABOVE THE SURFACE LOW IS FORECAST TO
MOVE SOUTH OVER KAUAI SATURDAY THEN LIFT OUT TO THE NORTHEAST
SUNDAY. COLD TEMPERATURES ASSOCIATED WITH THE LOW ALOFT WILL KEEP
THE AIRMASS UNSTABLE...RESULTING IN THE FORMATION OF THUNDERSTORMS
OVER LAND IN THE AFTERNOON. THE COLD TEMPERATURES WILL LIFT OUT TO
THE NORTHEAST WITH THE LOW...REDUCING THE CHANCE OF THUNDERSTORMS
SUNDAY.

&&

.MARINE...
SWELL DATA FROM BUOY ONE INDICATE THAT SURF ALONG THE NORTH SHORES
OF KAUAI AND OAHU WILL BE HIGHER THAN THE 25 FEET FORECAST FOR
TONIGHT. THE HIGH SURF WARNING WILL BE ADJUSTED UPPER AT 9 PM
PROBABLY TO 20 TO 35 FEET FOR KAUAI AND OAHU.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
HIGH WIND WARNING MOLOKAI TO THE BIG ISLAND
FLASH FLOOD WATCH OAHU TO THE BIG ISLAND
WINTER STORM WARNING FOR BIG ISLAND SUMMITS THROUGH SATURDAY
HIGH SURF WARNING NORTH AND WEST FACING SHORES OF ALL ISLANDS BUT
LANAI THROUGH SATURDAY

CRAIG

Flash Flood Warnings in Hawaii, 2004Every flash flood warning in 2004

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.