Alert archive / Hawaii / Flash Flood Warnings in 2006
Flash Flood Warning 50, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Mar 9, 2006, 4:21 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 outline as issued.
The facts
- Issued
- Mar 9, 2006, 4:21 PM HST (02:21 UTC)
- Expired
- Mar 9, 2006, 7:15 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 00:00Z, 2.4 hours before the alert went out and 19 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
- 167 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 586 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 56 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 100230
FFWHFO
HIC007-100515-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
421 PM HST THU MAR 9 2006
THE NATIONAL WEATHER SERVICE IN HONOLULU HAS CONTINUED A
* FLASH FLOOD WARNING FOR...
THE ISLAND OF KAUAI IN KAUAI COUNTY
* UNTIL 715 PM HST
* KAUAI CIVIL DEFENSE REPORTED THE CLOSURE OF KUHIO HIGHWAY AT THE
HANALEI RIVER BRIDGE DUE TO HIGH WATER LEVELS. ANOTHER AREA OF
HEAVY RAINS IS MOVING TOWARD KAUAI FROM THE SOUTHEAST AT 25 MILES
PER HOUR AND WILL REACH THE POIPU AND LIHUE AREA BY 530 PM HST.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
KILAUEA...PRINCEVILLE...HANALEI...WAINIHA...KAPAA...ANAHOLA...
WAILUA...LIHUE...POIPU...OMAO AND KALAHEO.
THIS FLASH FLOOD WARNING REPLACES THE PRE-EXISTING WARNING THAT WAS
IN EFFECT FOR THE ISLAND OF KAUAI.
MOVE TO HIGHER GROUND NOW. STAY AWAY FROM STREAMS AND LOW LYING AREAS
PRONE TO FLOODING.
EXCESSIVE RUNOFF FROM HEAVY RAINS WILL CAUSE FLASH FLOODING OF
STREAMS AND COULD ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.
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 715 PM HST IF
FLASH FLOODING CONDITIONS PERSIST.
LAT...LON 2205 15966 2187 15955 2189 15933 2223 15928
2224 15966
$$
KODAMAWhat 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 Mar 9, 4:00 PM HST, 21 minutes earlier.
Area forecast discussion, Mar 9, 4:00 PM HST, 21 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 400 PM HST THU MAR 9 2006 .SYNOPSIS... THE THREAT OF HEAVY RAINFALL AND THUNDERSTORMS WILL CONTINUE THROUGH THE DAY FRIDAY AS A SURFACE TROUGH LINGERS WEST OF KAUAI. EAST SOUTHEAST WINDS WILL GRADUALLY BECOME EAST NORTHEAST TRADES BY SUNDAY AS THE TROUGH MOVES AWAY...STARTING A PERIOD OF DRIER WEATHER WHICH WILL LAST THROUGH THE REST OF THE FORECAST PERIOD. && .DISCUSSION... DEEP SOUTHEAST TO SOUTH FLOW ASSOCIATED WITH A DEEP LAYER LOW NEAR 38N 173W IS LOCKED OVER THE MAIN HAWAIIAN ISLANDS...WITH A CONVERGENT LOW LEVEL FLOW SOUTH AND EAST OF THE LOW CENTER PRODUCING EXTENSIVE AREAS OF RAIN...WITH EMBEDDED HEAVY SHOWERS AND THUNDERSTORMS. AN ESPECIALLY LARGE AREA OF RAIN CONTINUES TO BE DETECTED BY RADAR NEAR KAUAI AND OAHU...AND OVER WATERS SOUTH AND WEST OF THESE ISLANDS. THE HEAVY SHOWERS HAVE EASED...AT LEAST FOR NOW...OVER THE EASTERN HALF OF THE BIG ISLAND. SATELLITE IMAGERY REVEALS SHOWERY LOW CLOUDS LOOSELY ORIENTED INTO A NORTHWEST TO SOUTHEAST BAND OVER WATERS ABOUT 250 MILES EAST OF ALL ISLANDS...AND THESE WILL PROVIDE ADDITIONAL MOISTURE IN THE CONVERGENT LOW LEVEL FLOW...AND WARRANTS THE HIGH WINDWARD POPS CURRENTLY IN THE GRIDS AND THE CONTINUATION OF THE FLASH FLOOD WATCH FOR ALL ISLANDS. THE LOW FAR TO OUR NORTHWEST IS MOVING NORTH-NORTHEAST NEAR 30 MPH...AND PROGS CONTINUE THIS GENERAL MOVEMENT TO CONTINUE OVER THE NEXT 24 HOURS...WITH THE LOW TO BE CENTERED OVER THE ALEUTIAN ISLANDS BY THIS TIME TOMORROW. ONE MIGHT THINK THAT THE QUICK EXIT OF THE LOW WOULD LEAD TO A RAPID IMPROVEMENT IN ISLAND WEATHER...BUT PROGS ARE INSISTING THAT A LOW LEVEL TROUGH WILL DEVELOP/LINGER IN PLACE WEST OF KAUAI THROUGH SATURDAY...BEFORE WEAKENING AND MOVING WEST AWAY FROM THE ISLANDS. THIS SOLUTION SEEMS REASONABLE...AND IS SHARED BY THE GLOBAL MODELS...EXCEPT GFS CONTINUES TO BE MOST AGGRESSIVE IN DEVELOPING A WEAK SURFACE LOW JUST NORTHWEST OF KAUAI...ALONG THE LINGERING TROUGH AXIS. EITHER WAY THE GLOBAL MODELS AGREE THAT LOW LEVEL MOISTURE CONVERGENCE WILL CONTINUE OVER THE ISLANDS...ESPECIALLY THE WESTERN ISLANDS...THROUGH TOMORROW...THUS THE FLOOD WATCH HAS BEEN EXTENDED THROUGH 6 PM FRIDAY FOR ALL ISLANDS. AS A SIDE NOTE...THE THREAT OF FLOODING RAIN MAY DIMINISH SOONER ON THE BIG ISLAND...AND LAST LONGER FOR KAUAI...BUT DUE TO THE UNCERTAINTY OF THE EVENT...ALL ISLANDS ARE IN THE WATCH THROUGH FRIDAY EVENING. HIGH PRESSURE BUILDING INTO THE NORTHEAST PACIFIC WILL ALLOW THE TROUGH TO DRIFT WEST AWAY FROM THE ISLANDS...AND ALLOW A DRIER MODERATE TO FRESH TRADE WIND REGIME TO BUILD IN FROM THE EAST THIS WEEKEND. A STRONG STABILIZING RIDGE IS NOT SEEN...SO THE TRADES WILL LIKELY BRING A FEW WINDWARD SHOWERS...BUT NOT AS INTENSE OR AS WIDESPREAD AS CURRENTLY. && MARINE... A HIGH SURF ADVISORY IS IN EFFECT FOR EAST FACING SHORES...DUE TO THE PRESENCE OF STRONG WINDS OFFSHORE TO THE EAST PRODUCING SEAS AND SWELLS THAT WILL RESULT IN SURF EXCEEDING ADVISORY CRITERIA THROUGH FRIDAY. && .HFO WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH...ALL HAWAIIAN ISLANDS EXTENDED THROUGH 6 PM FRIDAY. SMALL CRAFT ADVISORY FOR STRONG E/SE WINDS BIG ISLAND SOUTHEAST... BIG ISLAND WINDWARD...MAUI WINDWARD...OAHU WINDWARD...KAUAI WINDWARD WATERS THROUGH FRIDAY AFTERNOON. WINTER WEATHER ADVISORY...BIG ISLAND SUMMITS THROUGH 6 AM FRIDAY. && BIRCHARD
In the hours before
Local storm report, Mar 9, 4:09 PM HST, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HONOLULU HI
409 PM HST THU MAR 09 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0345 PM FLASH FLOOD 1 E HANALEI 22.21N 159.49W
03/09/2006 KAUAI IN KAUAI HI EMERGENCY MNGR
KAUAI CIVIL DEFENSE REPORTED THE CLOSURE OF KUHIO HIGHWAY
AT THE HANALEI RIVER BRIDGE DUE TO HIGH WATER LEVELS.
&&
KODAMAThe office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 9, 4:32 PM HST | Special Marine Warning | HFO | 58 min | |
| Mar 9, 5:56 PM HST | Flash Flood Warning | HFO | Kauai | 3 hr |
| Mar 10, 4:35 AM HST | Flash Flood Warning | HFO | Kauai | 3 hr |
| Mar 10, 7:30 AM HST | Flash Flood Warning | HFO | Kauai | 3 hr |
| Mar 10, 10:28 AM HST | Flash Flood Warning | HFO | Kauai | 3 hr |
Nearby
Flash Flood Warnings in Hawaii, 2006Every flash flood warning in 2006
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.