Alert archive / Hawaii / Flash Flood Warnings in 2004

Flash Flood Warning 21, NWS Honolulu, HI

February 27, 2004

NWS Honolulu, HI issued this flash flood warning at Feb 27, 2004, 2:31 PM HST. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Feb 27, 2004, 2:31 PM HST (00:31 UTC)
Expired
Feb 27, 2004, 5:30 PM HST
In force
3 hr
Issued by
NWS Honolulu, HI
Area
Counties, with a storm outline in the text

The nearest sounding before it

Lihue, (PHLI), launched 00:00Z, 0.5 hours before the alert went out and 141 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Lihue, at 00:00Z on 2004-02-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 104 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lihue, at 00:00Z on 2004-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
104 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
601 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGHW50 PHFO 280035
FFWHI 
HIZ002-280330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
231 PM HST FRI FEB 27 2004

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

* FLASH FLOOD WARNING FOR
  OAHU

* UNTIL 530 PM HST

* AT 230 PM HST...WEATHER SPOTTERS AND RAIN GAGES REPORTED CONTINUED 
  HEAVY RAIN OVER OAHU.  RAINFALL HAS BEEN ESPECIALLY HEAVY OVER 
  CENTRAL AND EAST OAHU. 

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF
STREAMS...HIGHWAYS...UNDERPASSES AND LOW LYING AREAS.

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 2162 15834 2122 15819 2127 15760 2177 15797
$$

KODAMA

The office that day

Everything else NWS Honolulu, HI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 27, 3:07 PM HSTFlash Flood WarningHFOHonolulu3 hr
Feb 27, 4:20 PM HSTFlash Flood WarningHFOKauai3 hr
Feb 27, 5:20 PM HSTFlash Flood WarningHFO3 hr
Feb 27, 5:41 PM HSTFlash Flood WarningHFOKauai3 hr
Feb 27, 5:50 PM HSTFlash Flood WarningHFOHonolulu3 hr
Feb 27, 8:24 PM HSTFlash Flood WarningHFOHonolulu3 hr
Feb 27, 8:36 PM HSTFlash Flood WarningHFOKauai3 hr
Feb 27, 9:50 PM HSTFlash Flood WarningHFOHonolulu, Kauai3 hr
Feb 27, 11:30 PM HSTFlash Flood WarningHFOKauai3 hr
Feb 28, 12:45 AM HSTFlash Flood WarningHFOHonolulu, Kauai3 hr
Feb 28, 3:30 AM HSTFlash Flood WarningHFOHonolulu, Kauai3 hr
Feb 28, 6:30 AM HSTFlash Flood WarningHFOHonolulu, Kauai3 hr
Feb 28, 9:25 AM HSTFlash Flood WarningHFOHonolulu, Kauai3 hr

Nearby

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

Sources

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.