Alert archive / Hawaii / Flash Flood Warnings in 2005

Flash Flood Warning 37, NWS Honolulu, HI

October 2, 2005Kauai County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Oct 2, 2005, 2:16 AM HST for Kauai County, Hawaii. 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 counties it named.

The facts

Issued: Oct 2, 2005, 2:16 AM HST (12:16 UTC)
Expired: Oct 2, 2005, 5:15 AM HST
In force: 3 hr
Issued by: NWS Honolulu, HI
Area: Whole counties

County Kauai County, HI

The nearest sounding before it

Lihue, (PHLI), launched 12:00Z, 0.3 hours before the alert went out and 37 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: 1425 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 625 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

000
WGHW50 PHFO 021223
FFWHFO
HIC007-021515-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
216 AM HST SUN OCT 2 2005

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

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

* UNTIL 515 AM HST

* AT 215 AM HST...HEAVY RAINFALL CONTINUES TO FALL OVER SOUTHERN 
  KAUAI. HEAVY RAINFALL HAS ABATED OVER WINDWARD AND NORTHERN 
  KAUAI...BUT STREAMS AND RIVERS REMAIN VERY HIGH....KEEPING THE 
  HANALEI BRIDGE CLOSED. IN ADDITION...ASTRONOMICAL HIGH TIDES
  OCCURRING THROUGH 300 AM HST WILL HELP KEEP STREAMS AND RIVERS 
  HIGH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WAINIHA...WAILUA...POLIHALE STATE PARK...MOLOAA...KAPAA...
  KILAUEA...KALALAU VALLEY...HANALEI...HANAKOA VALLEY...HANAKAPIAI
  VALLEY...HAENA AND ANAHOLA.

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

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

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 515 AM HST IF
FLASH FLOODING CONDITIONS PERSIST.

LAT...LON 2163 16054 2174 16032 2203 16009 2189 16005
      2182 16017 2183 15971 2190 15963 2207 15979
      2218 15968 2219 15929 2187 15940 2178 16024

$$
WROE

1 follow-up statement

000
WGHW70 PHFO 021336
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
330 AM HST SUN OCT 2 2005

HIC007-021515-
KAUAI-
330 AM HST SUN OCT 2 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 515 AM HST FOR THE ISLAND OF
KAUAI IN KAUAI COUNTY...

AT 330 AM HST...HEAVY RAINFALL HAS DIMINISHED OVER MOST OF KAUAI.  
WATER LEVELS IN MOST STREAMS AND RIVERS ARE SLOWLY DROPPING BUT 
STILL REMAIN HIGH...PARTICULARLY AT THE WAILUA RIVER. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WAILUA...
MOLOAA...KIPU FALLS...KAPAA...KALALAU VALLEY...HANAMAULU...HANAKOA
VALLEY AND ANAHOLA.

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.

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 2187 15940 2190 15963 2207 15979 2218 15968
      2219 15929

$$
WROE

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Honolulu, HI wrote its last area forecast discussion before this flash flood warning went out at Oct 1, 8:30 PM HST, 5 hours 46 minutes earlier.

Area forecast discussion, Oct 1, 8:30 PM HST, 5 hours 46 minutes before

HAWAIIAN ISLANDS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
830 PM HST SAT OCT 1 2005

.SYNOPSIS...
TROPICAL MOISTURE AND A LOW ALOFT WILL PRODUCE MORE WET WEATHER OVER
THE ISLANDS THROUGH SUNDAY...ESPECIALLY OVER OAHU AND KAUAI. DRIER
WEATHER IS RETURNING AS THE TROPICAL MOISTURE AND THE LOW MOVE OFF
TO THE WEST. TRADE-WIND WEATHER WILL RETURN TO ALL THE ISLANDS BY
MONDAY AND CONTINUE THROUGH THE REST OF NEXT WEEK.
&&

.DISCUSSION...
THE UPPER LOW TO THE NORTH OF KAUAI IS KEEPING THE AIRMASS UNSTABLE
OVER THE REGION TONIGHT. CONVECTIVE PARAMETERS ARE ALL FAIRLY GOOD
FOR THUNDERSTORMS THIS EVENING. CURRENT ZONES HAVE ENHANCED WORDING
FOR HEAVY RAIN...WILL CONTINUE. PROBLEM AREA AS OF RIGHT NOW IS
CENTRAL OAHU...HOWEVER KAUAI IS SHOWING SOME HEAVIER RETURNS AND
SHOWERS ARE ONGOING OVER THE REMAINDER OF THE MAIN HAWAIIAN ISLANDS.

&&

.MARINE...
A NEW SOUTH SWELL WILL BE REACHING THE ISLANDS TUESDAY. THAT
SWELL IS LIKELY TO PRODUCE SURF ABOVE THE ADVISORY LEVEL OF 8 FEET
THROUGH FRIDAY.

&&

.HYDROLOGY...
HEAVY RAINS CONTINUE OVER CENTRAL KOOLAU ON OAHU WITH RATES 4 TO 6
INCHES WHICH HAS CONTINUED OVER THE REGION. ENHANCED AREAS OF
CONVECTION ARE SHOWING UP ON WATER VAPOR UPSTREAM OF THE WESTERN
ISLAND WHICH COULD KEEP THE HEAVY RAIN GOING INTO THE EARLY MORNING
HOURS.

&&

.PREV DISCUSSION...
ISSUED AT 400 PM
A WEAK SURFACE TROUGH...ALL THAT REMAINS OF TROPICAL DEPRESSION
KENNETH...IS SOUTHWEST OF KAUAI AND MOVING WEST. THIS SYSTEM IS NO
LONGER HAVING MUCH INFLUENCE ON THE MAIN HAWAIIAN ISLANDS BUT IT HAS
LEFT INCREASED MOISTURE AROUND THE ISLANDS. DESPITE ALL THE WEATHER
AFFECTING THE MAIN HAWAIIAN ISLANDS RECENTLY...TRADE WINDS HAVE
CONTINUED. A 1025 MB SURFACE HIGH ABOUT 800 MILES NORTH OF KAUAI
NEAR 31N 161W IS MAINTAINING THE TRADES. OVER THE NEXT TWO DAYS THE
HIGH WILL SHIFT EASTWARD ENDING UP NEAR 140W ON MONDAY MORNING.

WATER VAPOR IMAGERY SHOWS A LOW ALOFT AT 25N 158W...ABOUT 240 MILES
NORTH NORTHEAST OF KAUAI. A TROUGH EXTENDS FROM THE LOW TO 100 MILES
NORTHEAST OF OAHU. THIS TROUGH HELPED KICK OFF THUNDERSTORMS AND
HEAVY SHOWERS FROM KAUAI TO MAUI TODAY. THE TROUGH IS NOW ROTATING
NORTHEASTWARD AROUND THE EAST SIDE OF THE LOW. THE LOW CENTER IS
FORECAST TO MOVE TOWARDS THE WEST NORTHWEST OVER THE NEXT 24
HOURS...THEN LIFT OUT TO THE NORTH.

THE LOW ALOFT WILL KEEP THE ATMOSPHERE UNSTABLE OVER THE MAIN
HAWAIIAN ISLANDS THROUGH SUNDAY. THE MOST INSTABILITY WILL BE NEAR
KAUAI AND OAHU WITH MORE STABLE CONDITIONS SPREADING WESTWARD OVER
THE BIG ISLAND AND MAUI COUNTY. WE ARE CANCELLING THE FLASH WATCH
FOR THE BIG ISLAND AND MAUI COUNTY AT 400 PM AND EXTENDING THE WATCH
TILL 600 PM SUNDAY FOR OAHU AND KAUAI.

STARTING MONDAY...SURFACE HIGH PRESSURE NORTHEAST OF THE ISLANDS
WILL BUILD SOUTHWESTWARD. THE PRESSURE GRADIENT OVER THE ISLANDS
WILL INCREASE. TRADE WINDS WILL STRENGTHEN AND BECOME LOCALLY
BREEZY BY THE MIDDLE OF NEXT WEEK. TRADE WIND WEATHER WILL CONTINUE
THROUGH NEXT WEEK.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH FOR KAUAI AND OAHU THROUGH 600 PM SUNDAY.
&&

PROTON

In the hours before

Local storm report, Oct 1, 8:48 PM HST, 5 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HONOLULU HI
848 PM HST SAT OCT 01 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0840 PM     HEAVY RAIN       2 NE MILILANI TOWN      21.47N 157.99W
10/01/2005  0.00 INCH        HONOLULU           HI   TRAINED SPOTTER

            HEAVY RAIN WITH PONDING ON ROADWAYS.

0840 PM     HEAVY RAIN       N MILILANI TOWN         21.45N 158.02W
10/01/2005  0.00 INCH        HONOLULU           HI   TRAINED SPOTTER

            HEAVY RAIN FOR THE LAST HOUR. FLOODED SIDEWALK AND
            PONDING ON ROADWAY.

&&

HFO

Local storm report, Oct 1, 8:51 PM HST, 5 hours 25 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE HONOLULU HI
851 PM HST SAT OCT 01 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0840 PM     HEAVY RAIN       N MILILANI TOWN         21.45N 158.02W
10/01/2005  2.00 INCH        HONOLULU           HI   TRAINED SPOTTER

            -CORRECTION- HEAVY RAIN 2INCHES IN ONE HOUR. FLOODED
            SIDEWALK AND PONDING ON ROADWAY.

&&

HFO

Local storm report, Oct 1, 10:34 PM HST, 3 hours 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HONOLULU HI
1034 PM HST SAT OCT 01 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1028 PM     FLASH FLOOD      5 NE HONOLULU           21.36N 157.81W
10/01/2005                   HONOLULU           HI   LAW ENFORCEMENT

            6-12 INCHES OF RUNNING WATER ON PALI HIGHWAY.

&&

HFO

Local storm report, Oct 1, 11:13 PM HST, 3 hours 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HONOLULU HI
1113 PM HST SAT OCT 01 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 PM     FLASH FLOOD      HANALEI                 22.21N 159.50W
10/01/2005                   KAUAI              HI   LAW ENFORCEMENT

            HANALEI BRIDGE CLOSED AT 11PM.

1028 PM     FLASH FLOOD      WAIALUA                 21.58N 158.13W
10/01/2005                   HONOLULU           HI   EMERGENCY MNGR

            CIVIL DEFENSE CURRENTLY EVACUATING OTAKE CAMP. LAKE
            WILSON MEASURING 84.8FT.

&&

HFO

Local storm report, Oct 2, 1:43 AM HST, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HONOLULU HI
143 AM HST SUN OCT 02 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0130 AM     FLOOD            HANAPEPE                21.92N 159.59W
10/02/2005                   KAUAI              HI   LAW ENFORCEMENT

            KAUAI POLICE REPORTS WATER OVER AWAWA ROAD.

&&

MFARNSWO

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 1, 7:39 PM HST	Flash Flood Warning	HFO	Honolulu	3 hr
Oct 1, 8:38 PM HST	Flash Flood Warning	HFO	Honolulu	3 hr
Oct 1, 10:15 PM HST	Flash Flood Warning	HFO	Kauai	3 hr
Oct 1, 10:20 PM HST	Flash Flood Warning	HFO	Honolulu	3 hr
Oct 1, 11:26 PM HST	Flash Flood Warning	HFO	Kauai	3 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; the sounding from the Mesonet's radiosonde archive.