Alert archive / Hawaii / Flash Flood Warnings in 2012

Flash Flood Warning 12, NWS Honolulu, HI

March 6, 2012Kauai County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Mar 6, 2012, 11:08 AM HST for Kauai County, Hawaii. It was in force for 5 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 6, 2012, 11:08 AM HST (21:08 UTC)
Expired
Mar 6, 2012, 4:06 PM HST
In force
5 hr
Issued by
NWS Honolulu, HI
Area
Storm-based polygon
Flood severity
None

County Kauai County, HI

The radar

The South Kauai radar (PHKI), 31 km from the middle of the area, began a volume at 21:10 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, 9.1 hours before the alert went out and 25 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-pSkew-T log-p diagram, Lihue, at 12:00Z on 2012-03-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 241 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lihue, at 12:00Z on 2012-03-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
241 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
472 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
316 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

718 
WGHW50 PHFO 062108
FFWHFO
HIC007-070000-
/O.NEW.PHFO.FF.W.0012.120306T2108Z-120307T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
1108 AM HST TUE MAR 6 2012

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE ISLAND OF KAUAI IN KAUAI COUNTY

* UNTIL 200 PM HST

* AT 1100 AM HST...RAINFALL HAS TAPERED OFF ALONG NORTH SLOPES OF 
  KAUAI...BUT STREAM FLOW REMAINS HIGH...AND KUHIO HIGHWAY REMAINS 
  CLOSED AT HANALEI AND NEAR THE KALIHIWAI BRIDGE. 

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HAENA...WAINIHA...NA PALI STATE PARK...PRINCEVILLE...HANALEI AND 
  KILAUEA.

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 200 PM HST IF FLASH
FLOODING PERSISTS.

LAT...LON 2210 15956 2218 15962 2224 15961 2226 15942
      2223 15937 2215 15938 2208 15943

$$
WROE
2 follow-up statements
500 
WGHW50 PHFO 062349
FFWHFO
HIC007-070300-
/O.EXT.PHFO.FF.W.0012.000000T0000Z-120307T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
149 PM HST TUE MAR 6 2012

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  THE ISLAND OF KAUAI IN KAUAI COUNTY

* UNTIL 500 PM HST

* AT 136 PM HST...KUHIO HIGHWAY REMAINS CLOSED AT HANALEI AND IN 
  HAENA DUE TO WATER ON THE ROAD...WITH ANOTHER CLOSURE KALIHIWAI. 
  ANOTHER AREA OF MODERATE TO HEAVY SHOWERS WILL MOVE ONTO THE NORTH 
  SHORE OF KAUAI AROUND 215 PM...AND WITH SOILS SATURATED... 
  ADDITIONAL FLOODING IS POSSIBLE.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WAINIHA...NA PALI STATE PARK...PRINCEVILLE AND KILAUEA.

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.

RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP
TERRAIN.

THIS WARNING MAY NEED TO BE EXTENDED BEYOND 500 PM HST IF FLASH
FLOODING PERSISTS.

LAT...LON 2210 15956 2218 15962 2224 15961 2226 15942
      2223 15937 2215 15938 2208 15943

$$
WROE
159 
WGHW70 PHFO 070206
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
406 PM HST TUE MAR 6 2012

HIC007-070214-
/O.CAN.PHFO.FF.W.0012.000000T0000Z-120307T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KAUAI HI-
406 PM HST TUE MAR 6 2012

...THE FLASH FLOOD WARNING IS CANCELLED FOR THE ISLAND OF KAUAI IN
KAUAI COUNTY...

CIVIL DEFENSE OFFICIALS REPORT THAT THE KUHIO HIGHWAY HAS BEEN 
REOPENED AT HANALEI. THUS...THE WARNING HAS BEEN CANCELLED.

A FLASH FLOOD WATCH CONTINUES THROUGH TONIGHT.

LAT...LON 2210 15956 2218 15962 2224 15961 2226 15942
      2223 15937 2215 15938 2208 15943

$$

WROE

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 5, 3:40 PM HSTAreal Flood AdvisoryHFOKalawao6 hr
Mar 5, 4:20 PM HSTSpecial Marine WarningHFO115 min
Mar 5, 5:14 PM HSTSpecial Marine WarningHFO61 min
Mar 5, 5:36 PM HSTFlash Flood WarningHFOKauai15 hr
Mar 5, 6:41 PM HSTSpecial Marine WarningHFO94 min
Mar 5, 7:30 PM HSTAreal Flood AdvisoryHFOHonolulu8 hr
Mar 5, 7:53 PM HSTAreal Flood AdvisoryHFOKalawao3 hr
Mar 5, 7:53 PM HSTSpecial Marine WarningHFO112 min
Mar 5, 8:11 PM HSTSpecial Marine WarningHFO94 min
Mar 5, 8:46 PM HSTSevere Thunderstorm WarningHFOKalawao29 min
Mar 5, 8:51 PM HSTSpecial Marine WarningHFO114 min
Mar 5, 9:26 PM HSTSpecial Marine WarningHFO2 hr
Mar 5, 9:54 PM HSTSpecial Marine WarningHFO2 hr
Mar 5, 10:41 PM HSTSpecial Marine WarningHFO2 hr
Mar 5, 11:51 PM HSTSpecial Marine WarningHFO114 min
Mar 6, 12:58 AM HSTSpecial Marine WarningHFO2 hr
Mar 6, 1:43 AM HSTSpecial Marine WarningHFO90 min
Mar 6, 3:25 AM HSTSpecial Marine WarningHFO2 hr
Mar 6, 6:41 AM HSTAreal Flood AdvisoryHFOHonolulu3 hr
Mar 6, 6:44 AM HSTSpecial Marine WarningHFO61 min
Mar 6, 7:10 AM HSTWinter Weather AdvisoryHFOHawaii9 hr
Mar 6, 7:27 AM HSTSpecial Marine WarningHFO63 min
Mar 6, 7:53 AM HSTFlash Flood WarningHFOHonolulu6 hr
Mar 6, 8:18 AM HSTSpecial Marine WarningHFO57 min
Mar 6, 8:25 AM HSTFlash Flood WarningHFOKauai3 hr
Mar 6, 9:11 AM HSTSpecial Marine WarningHFO64 min
Mar 6, 9:53 AM HSTSpecial Marine WarningHFO67 min
Mar 6, 10:03 AM HSTSpecial Marine WarningHFO57 min
Mar 6, 10:21 AM HSTSpecial Marine WarningHFO27 min
Mar 6, 10:54 AM HSTSpecial Marine WarningHFO51 min
Mar 6, 11:41 AM HSTSpecial Marine WarningHFO49 min
Mar 6, 12:05 PM HSTFlash Flood WarningHFOHonolulu5 hr
Mar 6, 12:22 PM HSTSpecial Marine WarningHFO39 min
Mar 6, 1:15 PM HSTSpecial Marine WarningHFO60 min

Nearby

Flash Flood Warnings in Hawaii, 2012Every flash flood warning in 2012

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.