Alert archive / Hawaii / Flash Flood Warnings in 2005

Flash Flood Warning 39, NWS Honolulu, HI

October 30, 2005Honolulu County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Oct 30, 2005, 11:34 PM HST for Honolulu County, Hawaii. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Oct 30, 2005, 11:34 PM HST (09:34 UTC)
Expired: Oct 31, 2005, 2:30 AM HST
In force: 3 hr
Issued by: NWS Honolulu, HI
Area: Counties, with a storm outline in the text

County Honolulu County, HI

What was reported inside it

Time	Report	Where	Remark
Oct 31, 2:30 AM HST	FLASH FLOOD	Sw Punaluu, HI	WATER FROM A DRAINAGE DITCH OVERFLOWED DURING HEAVY RAINS AND FLOODED A NEARBY RESIDENCE WITH 6 INCHES OF WATER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lihue, (PHLI), launched 00:00Z, 9.6 hours before the alert went out and 160 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 137 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 778 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 90 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 310936
FFWHFO
HIC003-311230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
1134 PM HST SUN OCT 30 2005

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

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

* UNTIL 230 AM HST

* AT 1132 PM HST...RADAR SHOWED HEAVY RAIN NEAR KAAAWA...OR ABOUT 14
  MILES NORTH OF HONOLULU. THE AREA OF HEAVY RAIN WAS NEARLY
  STATIONARY.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PUNALUU...WAIKANE...AND HAUULA.

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 230 AM HST IF
FLASH FLOODING CONDITIONS PERSIST.

LAT...LON 2143 15785 2145 15783 2146 15782 2152 15782
      2163 15789 2163 15795 2159 15796 2154 15795
      2151 15793 2148 15793 2146 15790

$$

PROTON/BIRCHARD/R BALLARD

1 follow-up statement

000
WGHW70 PHFO 311055
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
1253 AM HST MON OCT 31 2005

HIC003-311230-
HONOLULU-
1253 AM HST MON OCT 31 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 230 AM HST FOR THE ISLAND OF
OAHU IN HONOLULU COUNTY...

AT 1250 AM HST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A STORM PRODUCING FLASH FLOODING OVER KAAAWA.  THIS STORM
WAS NEARLY STATIONARY.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PUNALUU...
WAIKANE AND HAUULA.

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...DON/T
DROWN.

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 2143 15785 2145 15783 2146 15782 2152 15782
      2163 15789 2163 15795 2159 15796 2154 15795
      2151 15793 2148 15793 2146 15790

$$

PROTON

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 31, 2:30 AM HST	Flash Flood Warning	HFO	Honolulu	3 hr
Oct 31, 5:30 AM HST	Flash Flood Warning	HFO	Honolulu	2 hr

Nearby

Flash Flood Warnings in Hawaii, 2005 Every flash flood warning in 2005

Sources

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