Alert archive / Hawaii / Flash Flood Warnings in 2001

Flash Flood Warning 5, NWS Honolulu, HI

February 9, 2001Kauai County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Feb 9, 2001, 8:54 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: Feb 9, 2001, 8:54 AM HST (18:54 UTC)
Expired: Feb 9, 2001, 12:00 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 18:57 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 12:00Z, 6.9 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: 976 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 533 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

000 
WGHW50 PHFO 091854
FFWHI 
HIZ001-092200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
9 AM HST FRI FEB  9 2001

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KAUAI
  INCLUDING THE COMMUNITIES OF...HANALEI...WAINIHA AND PRINCEVILLE
  AND ALSO HANAPEPE...WAIMEA TO BARKING SANDS
	 
* UNTIL 1200 PM HST
	
* AT 900 AM HST...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED STRONG THUNDERSTORMS CONTINUING TO DEVELOP OVER MOUNT
  WAIALEALE ON KAUIA AND THESE WERE DUMPING HEAVY RAINFALL OVER
  THE NORTHERN SECTION OF THAT ISLAND. ANOTHER AREA OF VERY HEAVY
  IS SOUTHEAST OF KAUAI AND MOVING NORTHWEST TOWARD SOUTHERN KAUAI.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL BE NEAR...HANALEI...
  WAINIHA AND PRINCEVILLE OVER THE NEXT SEVERAL HOURS. ALSO OVER
  HANAPEPE...WAIMEA AND BARKING SANDS.

FLASH FLOODING IS EXPECTED IN NORMALLY DRY STREAMBEDS ISLANDWIDE 
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 KAUAI 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 Feb 9, 7:30 AM HST, 1 hour 24 minutes earlier.

Area forecast discussion, Feb 9, 7:30 AM HST, 1 hour 24 minutes before

HAWAIIAN ISLANDS SYNOPTIC DISCUSSION AND GUIDANCE - CORRECTED
NATIONAL WEATHER SERVICE HONOLULU HI
730 AM HST FRI FEB 09 2001

...CORRECTED FOR TIME OF ISSUANCE...

SUMMARY...THICK HIGH CLOUDS OBSCURE THE VIEW OF LOW CLOUDS STATEWIDE
THIS MORNING...BUT RADAR SHOWS THUNDERSTORMS HAVE DECREASED.
SHOWERS...SOME HEAVY...CONTINUE TO AFFECT WINDWARD AND MAUKA AREAS
OF MUCH OAHU AND KAUAI.  DRIER CONDITIONS EXIST OVER THE REMAINING
ISLANDS.  EXPECT THE SAME OVERALL PATTERN TO LAST THROUGH TONIGHT
AND TOMORROW.

DISCUSSION...CONVERGENT LOW LEVEL FLOW OVER AND WEST OF KAUAI WILL
CONTINUE THE THREAT OF HEAVY SHOWERS AND THUNDERSTORMS FOR THAT
ISLAND AT LEAST THROUGH TODAY AND POSSIBLY SATURDAY.  HIGH CLOUDS
SHOULD REMAIN STATEWIDE THROUGH SATURDAY AS WELL.  THE REST OF THE
ISLANDS SHOULD SEE MOIST SOUTHEAST FLOW WHICH WILL PROVIDE FOR
PERIODS OF SHOWERS ALONG WINDWARD AND MAUKA AREAS...BUT THE MAIN
FLOOD THREAT REMAINS ON KAUAI.  POWELL

.PHFO.....WARNINGS.....NONE
.         WATCHES......FLASH FLOOD WATCH KAUAI
.         ADVISORIES...URBAN AND SMALL STREAM FLOOD ADVISORY KAUAI
.                      SMALL CRAFT ADVISORY MAUI EASTWARD

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 8, 11:15 PM HST	Flash Flood Warning	HFO		3 hr
Feb 9, 12:35 AM HST	Flash Flood Warning	HFO		3 hr
Feb 9, 8:36 AM HST	Flash Flood Warning	HFO	Kauai	3 hr
Feb 9, 9:34 AM HST	Flash Flood Warning	HFO	Kauai	3 hr

Nearby

Flash Flood Warnings in Hawaii, 2001 Every 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.