Alert archive / Hawaii / Flash Flood Warnings in 2004
Flash Flood Warning 61, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Oct 15, 2004, 10:40 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 outline as issued.
The facts
- Issued
- Oct 15, 2004, 10:40 AM HST (20:40 UTC)
- Expired
- Oct 15, 2004, 1:45 PM HST
- In force
- 3 hr
- Issued by
- NWS Honolulu, HI
- Area
- Counties, with a storm outline in the text
County Kauai County, HI
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Lihue, (PHLI), launched 12:00Z, 8.7 hours before the alert went out and 9 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.
- Mixed-layer CAPE
- 391 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 916 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGHW50 PHFO 152043 FFWHFO HIC007-152345- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HONOLULU HI 1040 AM HST FRI OCT 15 2004 THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A * FLASH FLOOD WARNING FOR... THE ISLAND OF KAUAI IN KAUAI COUNTY * UNTIL 145 PM HST * AT 1033 AM HST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A STORM OVER WAILUA AND KAPAA. THE STORM CELLS PRODUCING FLASH FLOODING WERE MOVING NORTH AT 15 MILES PER HOUR WITH MORE HEAVY RAINS MOVING TOWARD KAUAI. * LOCATIONS IMPACTED INCLUDE... KAPAA...WAILUA...LIHUE...ANAHOLA...KIPU FALLS AND HANALEI THIS FLASH FLOOD WARNING REPLACES THE URBAN AND SMALL STREAM FLOOD ADVISORY THAT WAS IN EFFECT. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF STREAMS AND COULD ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN. 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. LAT...LON 2182 15953 2191 15932 2222 15928 2223 15953 $$ KODAMA
1 follow-up statement
000 WGHW70 PHFO 152327 FFSHFO HIC007-152355- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 125 PM HST FRI OCT 15 2004 ...THE FLASH FLOOD WARNING FOR EASTERN KAUAI COUNTY IS CANCELLED... RADAR INDICATES THAT THE THREAT OF FLOODING RAINFALL HAS ENDED ACROSS KAUAI. THEREFORE...THE FLASH FLOOD WARNING FOR KAUAI IS CANCELLED. LAT...LON 2182 15953 2191 15932 2222 15928 2223 15953 $$
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 15, 10:00 AM HST, 40 minutes earlier.
Area forecast discussion, Oct 15, 10:00 AM HST, 40 minutes before
HAWAIIAN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 1000 AM HST FRI OCT 15 2004 .SYNOPSIS... LOW PRESSURE NORTHWEST OF THE MAIN ISLAND CHAIN WILL KEEP KAUAI UNDER THE THREAT OF THUNDERSTORMS THROUGH THE DAY TODAY. HEAVY SHOWERS ARE POSSIBLE FOR THE REMAINING ISLANDS THIS AFTERNOON. AFTER TODAY...THE LOW WILL MOVE AWAY...ALLOWING HIGH PRESSURE AND TRADE WIND WEATHER TO RETURN THIS WEEKEND AND THROUGH NEXT WEEK. && .DISCUSSION... A DEEP LOW LOCATED NEAR 30N 170W HAS AN ASSOCIATED TROUGH WHICH EXTENDS ROUGHLY NORTH TO SOUTH ABOUT 150 MILES WEST OF KAUAI. GOOD SURFACE CONVERGENCE ALONG THE TROUGH AND GOOD DIFLUENCE OR DIVERGENCE ALOFT HAS TRIGGERED AN ACTIVE AREA OF THUNDERSTORMS ACROSS A SWATH OF THE CENTRAL NORTH PACIFIC 90 MILES EITHER SIDE OF A LINE FROM 22N 162W TO 18N 165W...WEST AND SOUTHWEST OF KAUAI AND NIIHAU. WE EXPECT THE VAST BULK OF THIS BAD WEATHER TO REMAIN WEST OF KAUAI...BUT LOW LEVEL CONVERGENT SOUTHEAST FLOW MAY TRIGGER HEAVY SHOWERS AND THUNDERSTORMS NEAR KAUAI TODAY. LIGHT SURFACE WINDS AND GOOD DIFLUENCE ALOFT MAY TRIGGER HEAVY SHOWERS THIS AFTERNOON ON THE REMAINING ISLANDS. AFTER TODAY...MODELS SHOW THE LOW AND TROUGH WILL MOVE AWAY TO THE WEST NORTHWEST...ALLOWING HIGH PRESSURE NORTHEAST OF THE MAIN HAWAIIAN ISLANDS TO FILL IN TOWARDS THE SOUTHWEST. THIS WILL SWING WINDS AROUND TO EASTERLIES AGAIN AND HERALD THE RETURN OF TRADE WIND WEATHER THIS WEEKEND. THE DEEP LOW AND ASSOCIATED TROUGH ARE BIG RAINMAKERS...SO IT IS PRUDENT TO MENTION SLIGHT UNCERTAINTY IN THE FORECAST. SO FAR...NEITHER THE LOW NOR THE TROUGH HAS MADE THE EXPECTED MOVE WEST. BOTH ARE STATIONARY. WE WILL WATCH TO SEE IF THIS SYSTEM OR THE WEATHER ASSOCIATED WITH IT TAKES AN UNEXPECTED MOVE TO THE EAST. OBVIOUSLY...SUCH A MOVE WOULD DRASTICALLY CHANGE THE NEAR-TERM FORECAST AND WOULD LIKELY REQUIRE THE ISSUANCE OF APPROPRIATE WATCHES AND WARNINGS. AGAIN...IF THE MODEL SCENARIO TAKES PLACE...THE VAST BULK OF THE RAIN AND BAD WEATHER WILL REMAIN WEST OF THE ISLANDS. && .HFO WATCHES/WARNINGS/ADVISORIES...NONE && POWELL
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.