Alert archive / Hawaii / Flash Flood Warnings in 2007

Flash Flood Warning 21, NWS Honolulu, HI

December 5, 2007Hawaii County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Dec 5, 2007, 8:30 PM HST for Hawaii 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: Dec 5, 2007, 8:30 PM HST (06:30 UTC)
Expired: Dec 5, 2007, 11:45 PM HST
In force: 3 hr
Issued by: NWS Honolulu, HI
Area: Storm-based polygon
Flood severity: None

County Hawaii County, HI

The nearest sounding before it

Hilo, (PITO), launched 00:00Z, 6.5 hours before the alert went out and 64 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: 492 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 906 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000
WGHW50 PHFO 060645
FFWHFO
HIC001-060945-
/O.NEW.PHFO.FF.W.0021.071206T0630Z-071206T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
845 PM HST WED DEC 5 2007

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

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

* UNTIL 1145 PM HST

* AT 830 PM HST...RADAR SHOWED LINES OF HEAVY RAIN CONTINUE TO 
  AFFECT THE WESTERN AND SOUTHERN PORTIONS OF BIG ISLAND INCLUDING 
  KONA AND KAU DISTRICTS. THE HEAVY RAIN HAVE SPREAD EAST INTO THE 
  PUNA AND HILO DISTRICTS IN THE PAST COUPLE OF HOURS. SATELLITE 
  IMAGERY STILL INDICATES AN EXTENSIVE AREA OF RAIN CLOUDS JUST 
  SOUTH AND SOUTHWEST OF THE BIG ISLAND AND THESE RAIN CLOUDS WILL 
  CONTINUE TO AFFECT THE BIG ISLAND IN THE NEXT FEW HOURS.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HILO...HONOKAA...PAPAIKOU...PAAUILO...PEPEEKEO...OOKALA...
  LAUPAHOEHOE...VOLCANO...GLENWOOD...PAHOA...KEAAU...KAPOHO...
  HAWAIIAN PARADISE PARK AND HAWAIIAN BEACHES.

THIS FLASH FLOOD WARNING REPLACES THE PRE-EXISTING WARNING THAT WAS
IN EFFECT FOR THE ISLAND OF HAWAII IN HAWAII COUNTY.

A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.

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

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 1145 PM HST IF FLASH
FLOODING PERSISTS.

LAT...LON 1903 15592 1977 15607 2002 15585 2027 15594
      2029 15580 2003 15528 1952 15479 1933 15494
      1920 15531 1889 15569

$$
HUI

2 follow-up statements

000
WGHW70 PHFO 060825
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
1025 PM HST WED DEC 5 2007

HIC001-060945-
/O.CON.PHFO.FF.W.0021.000000T0000Z-071206T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAWAII IN HAWAII COUNTY-
1025 PM HST WED DEC 5 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF HAWAII
IN HAWAII COUNTY UNTIL 1145 PM HST...

...A FLASH FLOOD WATCH FOR MAUI...KAHOOLAWE AND THE BIG ISLAND 
REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON...

ALTHOUGH THE RAIN GAUGES IN THE BIG ISLAND HAVE ONLY REPORTED RAIN 
AMOUNT UP TO AN INCH AND A HALF IN THE PAST FEW HOURS...RADAR DATA 
AS WELL SATELLITE IMAGERY CONTINUE TO SHOW LINES OF HEAVY RAIN JUST 
SOUTH OF THE BIG ISLAND THIS EVENING. EXPECT MORE HEAVY RAIN TO 
AFFECT THE WARNING AREA THROUGH THE NEXT HOUR.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
KEALAKEKUA...KEAUHOU...KAILUA-KONA...KONA VILLAGE 
RESORT...VOLCANO...PUUANAHULU...WAIKOLOA BEACH RESORT...
GLENWOOD...MOUNTAIN VIEW...SADDLE ROAD JUNCTION...PAHOA...
KAWAIHAE...HAWAIIAN BEACHES...KEAAU...HAWAIIAN PARADISE PARK...
KAMUELA...HILO...HAWI...PEPEEKEO...WAIPIO VALLEY AND LAUPAHOEHOE.

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 1145 PM HST IF FLASH
FLOODING PERSISTS.

LAT...LON 1903 15592 1977 15607 2002 15585 2027 15594
      2029 15580 2003 15528 1952 15479 1933 15494
      1920 15531 1889 15569

$$
HUI

000
WGHW70 PHFO 060931
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
1130 PM HST WED DEC 5 2007

HIC001-060940-
/O.CAN.PHFO.FF.W.0021.000000T0000Z-071206T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAWAII IN HAWAII COUNTY-
1130 PM HST WED DEC 5 2007

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

...A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL THURSDAY AFTERNOON 
FOR MAUI KAHOOLAWE AND THE BIG ISLAND...

THE HEAVY RAINS HAVE DECREASED OVER THE BIG ISLAND LATE THIS 
EVENING...THOUGH CONTINUOUS LIGHT TO MODERATE RAIN ARE EXPECTED TO 
LINGER THROUGH THURSDAY AFTERNOON. RUNOFF IS STILL OCCURRING AND 
STREAMS WILL REMAIN HIGH FOR SEVERAL HOURS.

THE POTENTIAL FOR FLASH FLOODING STILL EXISTS FOR MAUI...KAHOOLAWE 
AND THE BIG ISLAND AS THE WEATHER CONDITIONS REMAIN FAVORABLE FOR 
HEAVY RAIN TO OCCUR. THUS A FLASH FLOOD WATCH REMAINS IN EFFECT 
UNTIL THURSDAY AFTERNOON FOR THOSE ISLANDS.

LAT...LON 1903 15592 1977 15607 2002 15585 2027 15594
      2029 15580 2003 15528 1952 15479 1933 15494
      1920 15531 1889 15569

$$
HUI

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 5, 2:04 PM HST	Special Marine Warning	HFO		86 min
Dec 5, 2:33 PM HST	Flash Flood Warning	HFO	Kalawao	3 hr
Dec 5, 2:52 PM HST	Flash Flood Warning	HFO	Hawaii	6 hr
Dec 5, 3:06 PM HST	Blizzard Warning	HFO	Hawaii	48 hr

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.