Alert archive / Hawaii / Flash Flood Warnings in 2007

Flash Flood Warning 13, NWS Honolulu, HI

December 4, 2007Kauai County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Dec 4, 2007, 10:27 PM HST for Kauai County, Hawaii. It was in force for 2 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: Dec 4, 2007, 10:27 PM HST (08:27 UTC)
Expired: Dec 5, 2007, 12:30 AM HST
In force: 2 hr
Issued by: NWS Honolulu, HI
Area: Storm-based polygon
Flood severity: None

County Kauai County, HI

The nearest sounding before it

Lihue, (PHLI), launched 00:00Z, 8.5 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 108 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 1042 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

000
WGHW50 PHFO 050833
FFWHFO
HIC007-051030-
/O.NEW.PHFO.FF.W.0013.071205T0827Z-071205T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
1030 PM HST TUE DEC 4 2007

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

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

* UNTIL 1230 AM HST

* AT 1030 PM HST...RADAR SHOWED A LINE OF HEAVY SHOWERS AND 
  THUNDERSTORMS WITH RAIN RATES OF 2 TO 4 INCHES PER HOUR MOVING 
  ONTO WESTERN KAUAI AND TRAVELLING TO THE SOUTHEAST AT 15 MPH. 

* LOCATIONS IN THE WARNING INCLUDE THE ENTIRE ISLAND OF KAUAI.

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 1230 AM HST IF FLASH
FLOODING PERSISTS.

LAT...LON 2185 15957 2185 15965 2203 15987 2222 15973
      2228 15961 2228 15942 2214 15923 2198 15929
      2180 15951

$$
WROE

2 follow-up statements

000
WGHW70 PHFO 050949
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
1145 PM HST TUE DEC 4 2007

HIC007-051030-
/O.CON.PHFO.FF.W.0013.000000T0000Z-071205T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KAUAI IN KAUAI COUNTY-
1145 PM HST TUE DEC 4 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF KAUAI IN
KAUAI COUNTY UNTIL 1230 AM HST...

...A LINE OF HEAVY SHOWERS AND THUNDERSTORMS IS MOVING OFF EASTERN 
KAUAI INTO THE KAUAI CHANNEL. RUN OFF FROM THE HEAVY RAINFALL WILL 
CONTINUE FOR THE NEXT HOUR AND SOME ADDITIONAL HEAVY SHOWERS ARE 
POSSIBLE...

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO THE ENTIRE 
ISLAND OF KAUAI.

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 1230 AM HST IF FLASH
FLOODING PERSISTS.

LAT...LON 2185 15957 2185 15965 2203 15987 2222 15973
      2228 15961 2228 15942 2214 15923 2198 15929
      2180 15951

$$
WROE

000
WGHW70 PHFO 051003
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
1200 AM HST WED DEC 5 2007

HIC007-051030-
/O.CON.PHFO.FF.W.0013.000000T0000Z-071205T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KAUAI IN KAUAI COUNTY-
1200 AM HST WED DEC 5 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF KAUAI IN
KAUAI COUNTY UNTIL 1230 AM HST...

...A LINE OF HEAVY SHOWERS AND THUNDERSTORMS HAS MOVED OFF EASTERN 
KAUAI INTO THE KAUAI CHANNEL...BUT RUN OFF FROM THE HEAVY RAINFALL 
HAS CAUSED WATER LEVELS ON THE HANALEI RIVER TO EXCEED 7 FEET... 
WHICH WILL LIKELY FLOOD THE BRIDGE AT THE HANALEI RIVER. RUN OFF 
FROM THE HEAVY RAINFALL WILL CONTINUE IN THE SHORT TERM AND SOME 
ADDITIONAL HEAVY SHOWERS ARE POSSIBLE...

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO THE ENTIRE 
ISLAND OF KAUAI.

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 1230 AM HST IF FLASH
FLOODING PERSISTS.

LAT...LON 2185 15957 2185 15965 2203 15987 2222 15973
      2228 15961 2228 15942 2214 15923 2198 15929
      2180 15951

$$
WROE

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 5, 12:24 AM HST	Flash Flood Warning	HFO	Kauai	2 hr
Dec 5, 2:23 AM HST	Flash Flood Warning	HFO	Kauai	67 min
Dec 5, 2:27 AM HST	Flash Flood Warning	HFO	Honolulu	3 hr
Dec 5, 3:53 AM HST	Blizzard Watch	HFO	Hawaii	11 hr
Dec 5, 5:12 AM HST	Flash Flood Warning	HFO	Kalawao	3 hr
Dec 5, 6:30 AM HST	Marine Weather Statement	HFO		20 hr
Dec 5, 8:07 AM HST	Flash Flood Warning	HFO	Kalawao	3 hr
Dec 5, 8:43 AM HST	Flash Flood Warning	HFO	Kalawao	3 hr
Dec 5, 11:10 AM HST	Special Marine Warning	HFO		20 min
Dec 5, 12:02 PM HST	Special Marine Warning	HFO		43 min
Dec 5, 12:43 PM HST	Special Marine Warning	HFO		47 min
Dec 5, 12:55 PM HST	Special Marine Warning	HFO		65 min

Nearby

Flash Flood Warnings in Hawaii, 2007 Every flash flood warning in 2007

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.