Alert archive / Hawaii / Flash Flood Warnings in 2005
Flash Flood Warning 36, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Oct 1, 2005, 11:26 PM HST for Kauai County, Hawaii. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Oct 1, 2005, 11:26 PM HST (09:26 UTC)
- Expired
- Oct 2, 2005, 2:30 AM HST
- In force
- 3 hr
- Issued by
- NWS Honolulu, HI
- Area
- Counties, with a storm outline in the text
County Kauai County, HI
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 2, 1:30 AM HST | FLOOD | Hanapepe, HI | KAUAI POLICE REPORTS WATER OVER AWAWA ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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, 9.4 hours before the alert went out and 21 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
- 1190 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 746 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGHW50 PHFO 020935 FFWHFO HIC007-021230- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HONOLULU HI 1126 PM HST SAT OCT 1 2005 THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A * FLASH FLOOD WARNING FOR... THE ISLAND OF KAUAI IN KAUAI COUNTY * UNTIL 230 AM HST * AT 1120 PM HST...THE STREAM GAGES ON THE MAKAWELI RIVER...SOUTH FORK WAILUA RIVER AND THE HANAPEPE RIVER SHOWED A RAPID RISE IN WATER LEVELS. THE HANALEI RIVER HAS ALSO FORCED THE CLOSURE OF KUHIO HIGHWAY AT THE HANALEI RIVER BRIDGE. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WAINIHA...WAILUA...MOLOAA...KAPAA...KILAUEA... HANALEI... HAENA...WAIMEA...HANAPEPE 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. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF STREAMS AND COULD ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN. 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 230 AM HST IF FLASH FLOODING CONDITIONS PERSIST. LAT...LON 2189 15974 2180 15936 2219 15925 2228 15964 $$ KODAMA
2 follow-up statements
000 WGHW70 PHFO 021026 FFSHFO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 1221 AM HST SUN OCT 2 2005 HIC007-021230- KAUAI- 1221 AM HST SUN OCT 2 2005 ...A FLASH FLOOD WARNING CONTINUES UNTIL 230 AM HST FOR THE ISLAND OF KAUAI IN KAUAI COUNTY... AT 1214 AM HST...RADAR DATA INDICATED VERY HEAVY SHOWERS FALLING OVER THE EASTERN SLOPES OF KAUAI AT RATES OF 3 TO 4 INCHES PER HOUR. THIS ADDITIONAL RAINFALL WILL CAUSE WAILUA RIVER AND KAPAHI STREAM TO CONTINUE TO RISE ABOVE THEIR ALREADY HIGH LEVELS. HANALEI RIVER LEVELS DROPPED A BIT OVER THE PAST HOUR BUT WILL LIKELY RISE AGAIN WITH THIS NEW BURST OF HEAVY RAIN. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WAINIHA... WAILUA...MOLOAA...KAPAA...KILAUEA...HANALEI...HAENA...WAIMEA... HANAPEPE AND ANAHOLA. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF STREAMS AND COULD ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. MOTORISTS SHOULD BE ALERT FOR FLOODING AND SHOULD NOT ATTEMPT TO CROSS FAST FLOWING OR RISING WATER. MANY FLASH FLOOD DEATHS OCCUR WHEN MOTORISTS TRY CROSSING FLOODED ROADWAYS. TURN AROUND...DON/T DROWN. ESCAPE RISING WATER BY CLIMBING DIRECTLY TO HIGHER GROUND. NEVER TRY TO OUTRACE A FLOOD...EITHER ON FOOT OR IN YOUR VEHICLE. DO NOT CAMP NEAR STREAMS OR OTHER AREAS SUBJECT TO FLOODING. STAY TUNED TO NOAA WEATHER RADIO OR OTHER LOCAL MEDIA SOURCES FOR THE LATEST SEVERE WEATHER INFORMATION. REPORT FLOODING TO THE POLICE FOR IMMEDIATE RELAY TO THE NATIONAL WEATHER SERVICE. LAT...LON 2189 15974 2180 15936 2219 15925 2228 15964 $$ KODAMA
000 WGHW70 PHFO 021155 FFSHFO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 148 AM HST SUN OCT 2 2005 HIC007-021230- KAUAI- 148 AM HST SUN OCT 2 2005 ...A FLASH FLOOD WARNING CONTINUES UNTIL 230 AM HST FOR THE ISLAND OF KAUAI IN KAUAI COUNTY... AT 142 AM HST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED CONTINUED ROAD CLOSURE AT THE HANALEI BRIDGE. ADDITIONAL HEAVY SHOWERS ARE MOVING OVER NORTHERN AND SOUTHERN KAUAI WHICH WILL LEAD TO RAPID STREAM RISES WITHIN ALREADY ELEVATED STREAMS AND RIVERS. IN ADDITION...ASTRONOMICAL HIGH TIDES OCCURRING NOW THROUGH 300 AM HST WILL HELP KEEP STREAMS AND RIVERS HIGH. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WAINIHA... WAILUA...MOLOAA...KAPAA...KILAUEA...KALALAU VALLEY...HANALEI... HANAKOA VALLEY...HANAKAPIAI VALLEY...HAENA AND ANAHOLA. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. 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 2189 15974 2180 15936 2219 15925 2228 15964 $$ 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, 2 hours 56 minutes earlier.
Area forecast discussion, Oct 1, 8:30 PM HST, 2 hours 56 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, 2 hours 38 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.
&&
HFOLocal storm report, Oct 1, 8:51 PM HST, 2 hours 35 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.
&&
HFOLocal storm report, Oct 1, 10:34 PM HST, 52 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.
&&
HFOLocal storm report, Oct 1, 11:13 PM HST, 13 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.
&&
HFOThe 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 2, 2:16 AM HST | Flash Flood Warning | HFO | Kauai | 3 hr |
Nearby
Flash Flood Warnings in Hawaii, 2005Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.