Alert archive / Hawaii / Flash Flood Warnings in 2001

Flash Flood Warning 12, NWS Honolulu, HI

October 24, 2001Kauai County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Oct 24, 2001, 6:15 PM 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 24, 2001, 6:15 PM HST (04:15 UTC)
Expired
Oct 24, 2001, 9:15 PM HST
In force
3 hr
Issued by
NWS Honolulu, HI
Area
Whole counties

County Kauai County, HI

The radar

The South Kauai radar (PHKI), 20 km from the middle of the area, began a volume at 04:19 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lihue, (PHLI), launched 00:00Z, 4.3 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-pSkew-T log-p diagram, Lihue, at 00:00Z on 2001-10-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 30 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 2001-10-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.1939Sfc1 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
30 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
1312 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
-6 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGHW50 PHFO 250415
FFWHI 
FFWHI
HIZ003-250715-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
615 PM HST WED OCT 24 2001

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST MAUI
  INCLUDING THE COMMUNITIES OF...HANA...KIPAHULU AND SEVEN SACRED 
  POOLS AREA
	 
* UNTIL 915 PM HST
	
* AT 615 PM HST...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED STRONG THUNDERSTORMS CONTINUING OVER THE EAST AND 
  SOUTHEASTERN FLANKS OF HALEAKALA

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL BE OVER EAST MAUI FOR 
  THE NEXT SEVERAL HOURS.

FLASH FLOODING IS EXPECTED IN NORMALLY DRY STREAMBEDS DURING THE 
NEXT THREE HOURS. PERSONS IN LOW-LYING OR FLOOD PRONE AREAS SHOULD 
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT. 
PERSON ON MAUI SHOULD TAKE IMMEDIATE ACTION TO PROTECT LIFE AND 
PROPERTY AND SEEK HIGHER GROUND OR REMAIN INDOORS.

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 TO CROSS FLOODED ROADWAYS. ESCAPE RISING WATER BY 
CLIMBING DIRECTLY TO HIGHER GROUND. NEVER TRY TO OUTRUN A FLOOD 
EITHER ON FOOT OR IN YOUR VEHICLE. DO NOT CAMP NEAR STREAMS OR OTHER 
AREAS SUBJECT TO FLOODING.

THIS STORM WILL PRODUCE DANGEROUS LIGHTNING. LIGHTNING IS A LEADING 
KILLER AND PRECAUTIONS SHOULD BE TAKEN TO AVOID BEING STRUCK BY 
LIGHTNING. STAY OUT FROM UNDER TALL TREES AND AWAY FROM THE OCEAN 
AND BEACHES IF LIGHTNING IS OCCURRING. DO NOT TOUCH OR REMAIN CLOSE 
TO METAL POLES OR FENCES.

STAY TUNED TO NOAA WEATHER RADIO...LOCAL TV OR RADIO FOR FURTHER 
NATIONAL WEATHER SERVICE INFORMATION.
 
FARRELL      NATIONAL WEATHER SERVICE HONOLULU

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 24, 3:31 PM HST, 2 hours 44 minutes earlier.

Area forecast discussion, Oct 24, 3:31 PM HST, 2 hours 44 minutes before
NARRATIVE SYNOPTIC DISCUSSION FOR AMERICAN SAMOA AND THE INDEPENDENT
STATE OF SAMOA

TONIGHT THROUGH FRIDAY...

SATELLITE IMAGERY SHOWS A BAND OF CLOUDS WITH WIDELY SCATTERED
EMBEDDED SHOWERS IMMEDIATELY TO YOUR SOUTHWEST. THIS
SOUTHEAST-NORTHWEST ALIGNED CLOUD BAND IS ABOUT 275 MILES WIDE. IT
IS EXPECTED TO MOVE THROUGH YOUR ISLANDS TONIGHT THROUGH THURSDAY.
SKIES ARE EXPECTED TO IMPROVE GRADUALLY FRIDAY. VARIABLE WINDS LESS
THAN 10 KNOTS TONIGHT THROUGH THURSDAY. SOUTHEAST WINDS NEAR 10
EXPECTED THURSDAY NIGHT AND FRIDAY. 3 TO 5 FT SOUTHWEST SWELL.

OUTLOOK FOR SATURDAY THROUGH MONDAY...

SOUTHEAST TRADE WINDS 10 TO 15 KNOTS SATURDAY THROUGH MONDAY.
EXPECT PARTLY CLOUDY SKIES WITH ISOLATED TRADE SHOWERS. 4 TO 6 FT
SOUTHWEST SWELL.

NARRATIVE DISCUSSION FOR TUVALU

TONIGHT THROUGH SATURDAY...TUVALU TIME...

SATELLITE IMAGERY SHOWS AN AREA OF CLOUDINESS WITH ISOLATED EMBEDDED
THUNDERSTORMS JUST BEYOND 375 MILES EAST OF TUVALU. THIS AREA HAS
REMAINED NEARLY STATIONARY TODAY AND IS EXPECTED TO STAY EAST OF
YOUR ISLAND.  VERY FEW PATCHES OF LOW CLOUDS SURROUND YOUR
IMMEDIATE VICINITY. THUS EXPECT PARTLY CLOUDY SKIES WITH POSSIBLY
AN ISOLATED SHOWER.  WINDS WILL REMAIN SOUTHEAST TONIGHT BUT TURN
EASTERLY LATE TOMORROW (FRIDAY). SPEEDS WILL BE GENERALLY 10 KTS OR
LESS BUT INCREASE TO 10 TO 15 KT SATURDAY.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 24, 3:25 PM HSTFlash Flood WarningHFOKauai3 hr
Oct 24, 6:25 PM HSTFlash Flood WarningHFOKauai3 hr
Oct 24, 6:50 PM HSTFlash Flood WarningHFOKauai3 hr

Nearby

Flash Flood Warnings in Hawaii, 2001Every flash flood warning in 2001

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; radar from the NEXRAD Level II archive.