Alert archive / Hawaii / Flash Flood Warnings in 2011
Flash Flood Warning 25, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at May 8, 2011, 6:42 AM HST for Kauai County, Hawaii. It was in force for 15 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
- May 8, 2011, 6:42 AM HST (16:42 UTC)
- Expired
- May 8, 2011, 9:45 PM HST
- In force
- 15 hr
- Issued by
- NWS Honolulu, HI
- Area
- Storm-based polygon
- Flood severity
- None
County Kauai County, HI
The radar
The South Kauai radar (PHKI), 21 km from the middle of the area, began a volume at 16:45 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, 4.7 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
- 556 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 732 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
563
WGHW50 PHFO 081642
FFWHFO
HIC007-081945-
/O.NEW.PHFO.FF.W.0025.110508T1642Z-110508T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
642 AM HST SUN MAY 8 2011
THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A
* FLASH FLOOD WARNING FOR...
THE ISLAND OF KAUAI IN KAUAI COUNTY
* UNTIL 945 AM HST
* AT 640 AM HST...GAGES ON THE WAINIHA...HANALEI AND HANAPEPE RIVERS
SHOW DANGEROUS WATER LEVELS DUE TO RAINFALL OVER THE ISLAND. RADAR
SHOWS THE AREA OF HEAVY RAIN OVER KAUAI WAS NEARLY STATIONARY.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HAENA...WAINIHA...NA PALI STATE PARK...MOLOAA...KALALAU VALLEY...
PRINCEVILLE...KOKEE STATE PARK...KILAUEA...KAPAA AND ANAHOLA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
THIS FLASH FLOOD WARNING REPLACES THE PRE-EXISTING WARNING THAT WAS
IN EFFECT FOR THE ISLAND OF KAUAI COUNTY.
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 945 AM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2222 15969 2227 15932 2202 15927 2186 15943
2189 15961
$$8 follow-up statements
315
WGHW70 PHFO 081849
FFSHFO
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
849 AM HST SUN MAY 8 2011
HIC007-081945-
/O.CON.PHFO.FF.W.0025.000000T0000Z-110508T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KAUAI COUNTY-
849 AM HST SUN MAY 8 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF KAUAI IN
KAUAI COUNTY UNTIL 945 AM HST...
RAINFALL OVER PORTIONS OF KAUAI HAS LIGHTENED...BUT HEAVY RAIN
CONTINUES OVER THE INTERIOR OF THE ISLAND. THIS HEAVY RAIN WILL
CONTINUE TO IMPACT LOCATIONS DOWNSTREAM OVER THE NEXT COUPLE OF
HOURS. STREAM GAGES ACROSS THE ISLAND ARE BEGINNING TO SHOW A
DOWNWARD TREND...BUT REMAIN HIGH ENOUGH TO WARRANT CAUTION. COUNTY
OFFICIALS ADVISE THAT THE HANALEI BRIDGE REMAINS CLOSED DUE TO
FLOODING.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HAENA...
WAINIHA...NA PALI STATE PARK...MOLOAA...KALALAU VALLEY...WAILUA...
PRINCEVILLE...KOKEE STATE PARK...KILAUEA...KAPAA...HANALEI AND
ANAHOLA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 945 AM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2222 15969 2227 15932 2202 15927 2186 15943
2189 15961
$$568
WGHW50 PHFO 081935
FFWHFO
HIC007-082245-
/O.EXT.PHFO.FF.W.0025.000000T0000Z-110508T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
935 AM HST SUN MAY 8 2011
THE NATIONAL WEATHER SERVICE IN HONOLULU HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
THE ISLAND OF KAUAI IN KAUAI COUNTY
* UNTIL 1245 PM HST
* AT 922 AM HST...RADAR SHOWED HEAVY RAIN CONTINUING TO FALL OVER
PORTIONS OF KAUAI. ALL OF THE STREAM GAGES ON KAUAI HAVE BEEN ON
THE DECREASE OVER THE LAST COUPLE OF HOURS...AND IN GENERAL HAVE
LEVELED OFF IN THE LAST HOUR. STREAMS AND RIVERS REMAIN ELEVATED
WITH THE POSSIBILITY OF ADDITIONAL FLOODING AS RAIN PERSISTS.
COUNTY OFFICIALS HAVE REPORTED THE HANALEI BRIDGE REMAINS CLOSED.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HAENA...WAINIHA...NA PALI STATE PARK...MOLOAA...KALALAU VALLEY...
WAILUA...PRINCEVILLE...KOKEE STATE PARK...KILAUEA...HANALEI AND
ANAHOLA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
THIS FLASH FLOOD WARNING REPLACES THE PRE-EXISTING WARNING THAT WAS
IN EFFECT FOR THE ISLAND OF KAUAI IN KAUAI COUNTY.
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 1245 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2222 15969 2227 15932 2202 15927 2186 15943
2189 15961
$$943
WGHW70 PHFO 082045
FFSHFO
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
1045 AM HST SUN MAY 8 2011
HIC007-082245-
/O.CON.PHFO.FF.W.0025.000000T0000Z-110508T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KAUAI COUNTY-
1045 AM HST SUN MAY 8 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF KAUAI IN
KAUAI COUNTY UNTIL 1245 PM HST...
HEAVY RAIN CONTINUES TO FALL OVER KAUAI. THE HANALEI RAINFALL GAGE
REPORTED A RAINFALL RATE OF 1.60 INCHES AN HOUR...AND THE HANALEI
RIVER GAGE HAS STARTED AN UPWARD TREND IN THE PAST HOUR. RADAR SHOWS
HEAVIER RAIN IN THE MOUNTAINS.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HAENA...
WAINIHA...NA PALI STATE PARK...MOLOAA...KALALAU VALLEY...WAILUA...
PRINCEVILLE...KOKEE STATE PARK...KILAUEA...KAPAA...HANALEI AND
ANAHOLA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 1245 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2222 15969 2227 15932 2202 15927 2186 15943
2189 15961
$$384
WGHW50 PHFO 082214
FFWHFO
HIC007-090145-
/O.EXT.PHFO.FF.W.0025.000000T0000Z-110509T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
1214 PM HST SUN MAY 8 2011
THE NATIONAL WEATHER SERVICE IN HONOLULU HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
THE ISLAND OF KAUAI IN KAUAI COUNTY
* UNTIL 345 PM HST
* AT 1208 PM HST...RADAR SHOWED HEAVY RAIN MOVING OVER KAUAI FROM
THE SOUTH...AND THIS AREA OF RAIN EXTENDS MORE THAN 30 MILES TO
THE SOUTH OF KAUAI. RADAR ESTIMATES RAINFALL RATES NEAR 4 INCHES
AN HOUR POSSIBLE WITH THIS AREA OF RAIN. THE HANALEI RIVER GAGE
HAD EXCEEDED 9 FT AT NOON...AND WILL LIKELY CONTINUE TO RISE AS
THE HEAVY RAIN PERSISTS.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HAENA...WAINIHA...NA PALI STATE PARK...MOLOAA...KALALAU VALLEY...
WAILUA...PRINCEVILLE...KOKEE STATE PARK...KILAUEA...HANALEI AND
ANAHOLA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
THIS FLASH FLOOD WARNING REPLACES THE PRE-EXISTING WARNING THAT WAS
IN EFFECT FOR THE ISLAND OF KAUAI IN KAUAI COUNTY.
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 345 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2222 15969 2227 15932 2202 15927 2186 15943
2189 15961
$$476
WGHW70 PHFO 090018
FFSHFO
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
218 PM HST SUN MAY 8 2011
HIC007-090145-
/O.CON.PHFO.FF.W.0025.000000T0000Z-110509T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KAUAI COUNTY-
218 PM HST SUN MAY 8 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF KAUAI IN
KAUAI COUNTY UNTIL 345 PM HST...
HEAVY RAIN CONTINUES TO FALL OVER NORTHERN KAUAI...WITH MODERATE
RAIN FALLING OVER THE REMAINDER OF THE ISLAND. MODERATE RAIN IS
EXPECTED TO CONTINUE TO MOVE ONSHORE FROM THE SOUTH OVER THE NEXT
COUPLE OF HOURS. THE HANALEI BRIDGE REMAINS CLOSED...AND THE
HANALEI RIVER GAGE REMAINS ABOVE 9 FT AT 2 PM. SEVERAL OTHER STREAM
GAGES SAW AN INCREASE IN WATER LEVELS SINCE NOON...BUT ALL THE
STREAM GAGES ARE NOW BEGINNING TO DROP OR LEVEL OFF. WITH ADDITIONAL
RAIN EXPECTED...SOME OF THE STREAM GAGES MAY RISE AGAIN.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HAENA...
WAINIHA...NA PALI STATE PARK...MOLOAA...KALALAU VALLEY...WAILUA...
PRINCEVILLE...KOKEE STATE PARK...KILAUEA...KAPAA...HANALEI AND
ANAHOLA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 345 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2222 15969 2227 15932 2202 15927 2186 15943
2189 15961
$$806
WGHW50 PHFO 090141
FFWHFO
HIC007-090445-
/O.EXT.PHFO.FF.W.0025.000000T0000Z-110509T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
341 PM HST SUN MAY 8 2011
THE NATIONAL WEATHER SERVICE IN HONOLULU HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
THE ISLAND OF KAUAI IN KAUAI COUNTY
* UNTIL 645 PM HST
* AT 334 PM HST...RADAR SHOWED MODERATE TO HEAVY RAIN CONTINUING TO
FALL OVER KAUAI. RADAR CURRENTLY ESTIMATES RAINFALL RATES UP TO 2
INCHES POSSIBLE. IN RESPONSE TO SOME PERIODS OF LIGHTER RAIN...ALL
OF THE STREAM GAGES ON KAUAI ARE SHOWING A DOWNWARD TREND. HOWEVER
AS ADDITIONAL RAIN MOVES ONSHORE FROM THE SOUTH...THOSE STREAMS
MAY ONCE AGAIN SEE WATER RISE.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HAENA...WAINIHA...NA PALI STATE PARK...MOLOAA...KALALAU VALLEY...
WAILUA...PRINCEVILLE...KOKEE STATE PARK...KILAUEA...HANALEI AND
ANAHOLA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 645 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2222 15969 2227 15932 2202 15927 2186 15943
2189 15961
$$772
WGHW50 PHFO 090440
FFWHFO
HIC007-090745-
/O.EXT.PHFO.FF.W.0025.000000T0000Z-110509T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
640 PM HST SUN MAY 8 2011
THE NATIONAL WEATHER SERVICE IN HONOLULU HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
THE ISLAND OF KAUAI IN KAUAI COUNTY
* UNTIL 945 PM HST
* AT 635 PM HST...THE HANALEI RIVER BRIDGE REMAINED CLOSED. RADAR
SHOWED HEAVY RAIN OVER AND NEAR LIHUE THAT AND MOVING TO THE
NORTH. THIS ADDITIONAL RAIN WILL LIKELY KEEP THE HANALEI RIVER
RUNNING HIGH FOR ANOTHER THREE HOURS.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HAENA...WAINIHA...NA PALI STATE PARK...MOLOAA...KALALAU VALLEY...
WAILUA...PRINCEVILLE...KOKEE STATE PARK...KILAUEA...KAPAA...HANALEI
AND ANAHOLA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 945 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2222 15969 2227 15932 2202 15927 2186 15943
2189 15961
$$
CRAIG034
WGHW70 PHFO 090657
FFSHFO
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
857 PM HST SUN MAY 8 2011
HIC007-090745-
/O.CON.PHFO.FF.W.0025.000000T0000Z-110509T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KAUAI COUNTY-
857 PM HST SUN MAY 8 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF KAUAI IN
KAUAI COUNTY UNTIL 945 PM HST...
WEATHER RADAR SHOWS HEAVY RAINS MOVING NORTH ALONG THE EAST SIDE OF
KAUAI. MORE HEAVY RAIN IS LOCATED TO THE SOUTH OF THE ISLAND AND
ALSO MOVING TO THE NORTH. THE THREAT OF FLOODING CONTINUES.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HAENA...
WAINIHA...NA PALI STATE PARK...MOLOAA...KALALAU VALLEY...WAILUA...
PRINCEVILLE...KOKEE STATE PARK...KILAUEA...KAPAA...HANALEI AND
ANAHOLA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 945 PM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 2222 15969 2227 15932 2202 15927 2186 15943
2189 15961
$$
CRAIGThe office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 3:35 PM HST | Flash Flood Watch | HFO | Honolulu, Kauai, Kalawao | 60 hr |
| May 7, 3:39 PM HST | Small Craft Advisory | HFO | 48 hr | |
| May 8, 12:28 AM HST | Areal Flood Advisory | HFO | Honolulu | 3 hr |
| May 8, 3:01 AM HST | Flash Flood Warning | HFO | Honolulu | 3 hr |
| May 8, 3:57 AM HST | Flash Flood Warning | HFO | Kauai | 3 hr |
| May 8, 4:21 AM HST | Flash Flood Warning | HFO | Honolulu | 3 hr |
| May 8, 5:47 AM HST | Special Marine Warning | HFO | 46 min | |
| May 8, 7:01 AM HST | Flash Flood Warning | HFO | Honolulu | 6 hr |
Nearby
Flash Flood Warnings in Hawaii, 2011Every flash flood warning in 2011
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.