Alert archive / Hawaii / Flash Flood Warnings in 2014
Flash Flood Warning 21, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Aug 8, 2014, 12:00 AM 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
- Aug 8, 2014, 12:00 AM HST (10:00 UTC)
- Expired
- Aug 8, 2014, 2:45 AM HST
- In force
- 3 hr
- Issued by
- NWS Honolulu, HI
- Area
- Storm-based polygon
- Flood severity
- None
County Hawaii County, HI
The radar
The Kamuela/Kohala Apt radar (PHKM), 53 km from the middle of the area, began a volume at 10:01 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
Hilo, (PITO), launched 00:00Z, 10.0 hours before the alert went out and 44 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
- 25 J/kg
- Mixed-layer CIN
- -71 J/kg
- Mixed-layer LCL
- 545 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 216 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
968
WGHW50 PHFO 081000
FFWHFO
HIC001-081245-
/O.NEW.PHFO.FF.W.0021.140808T1000Z-140808T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
1200 AM HST FRI AUG 8 2014
THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A
* FLASH FLOOD WARNING FOR...
THE ISLAND OF HAWAII IN HAWAII COUNTY
* UNTIL 245 AM HST
* AT 1144 PM HST...RADAR SHOWED NUMEROUS BANDS OF MODERATE TO HEAVY
RAINFALL CONTINUING TO MOVE OVER THE NORTHEAST AND EAST FACING
SLOPES OF THE BIG ISLAND. STREAM GAGES WERE SHOWING STEADY RISES
WHICH SUGGEST RUNOFF LEVELS IN FLOOD PRONE AREAS OF HILO...
HAMAKUA AND WINDWARD KOHALA WERE REACHING A POINT WHERE ROAD
CLOSURES MAY BE IMMINENT OR OCCURRING.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WAIPIO VALLEY...LAUPAHOEHOE...OOKALA...HONOKAA...WAIMEA...
HILO...KEAAU...PAHOA...MOUNTAIN VIEW...VOLCANO AND GLENWOOD.
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 FLOOD ADVISORY THAT WAS IN
EFFECT FOR THE ISLAND OF HAWAII IN HAWAII COUNTY.
RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP
TERRAIN.
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 245 AM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 1983 15542 2011 15596 2031 15589 2019 15544
1990 15505 1944 15471 1910 15537 1943 15544
$$
KODAMA1 follow-up statement
057
WGHW70 PHFO 081217
FFSHFO
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
217 AM HST FRI AUG 8 2014
HIC001-081245-
/O.CON.PHFO.FF.W.0021.000000T0000Z-140808T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAWAII HI-
217 AM HST FRI AUG 8 2014
...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR THE ISLAND OF HAWAII
IN HAWAII COUNTY UNTIL 245 AM HST...
A BAND OF HEAVY RAINFALL ROTATING AROUND THE CENTER OF TROPICAL
STORM ISELLE HAS MOVED ONSHORE OVER THE SOUTHEASTERN SLOPE OF THE
PUNA DISTRICT WITH RAIN RATES OF 1 TO 2 INCHES PER HOUR. HEAVIER
RAINFALL AT RATES OF 2 TO 3 INCHES PER HOUR WERE OFFSHORE AND MOVING
TOWARD THE COAST.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WAIPIO
VALLEY... LAUPAHOEHOE...OOKALA...HONOKAA...WAIMEA...HILO...
KEAAU...PAHOA...MOUNTAIN VIEW...VOLCANO AND GLENWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS FLASH FLOODING IS IMMINENT OR OCCURRING
IN STREAMS...ROADS AND LOW LYING AREAS. MOVE TO HIGHER GROUND NOW.
DO NOT CROSS FAST FLOWING OR RISING WATER IN YOUR VEHICLE OR ON FOOT.
TURN AROUND...DON/T DROWN.
&&
RUNOFF FROM THIS STORM MAY ALSO CAUSE ROCK AND MUDSLIDES IN STEEP
TERRAIN.
THIS WARNING MAY NEED TO BE EXTENDED BEYOND 245 AM HST IF FLASH
FLOODING PERSISTS.
LAT...LON 1983 15542 2011 15596 2031 15589 2019 15544
1990 15505 1944 15471 1910 15537 1943 15544
$$
KODAMAThe office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 4:15 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Aug 7, 8:19 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Aug 7, 9:34 PM HST | Areal Flood Advisory | HFO | Hawaii | 3 hr |
| Aug 8, 1:31 AM HST | Areal Flood Advisory | HFO | Kalawao | 3 hr |
| Aug 8, 2:37 AM HST | Flash Flood Warning | HFO | Hawaii | 12 hr |
| Aug 8, 7:36 AM HST | Areal Flood Advisory | HFO | Honolulu | 3 hr |
| Aug 8, 10:26 AM HST | Areal Flood Advisory | HFO | Honolulu | 3 hr |
Nearby
Flash Flood Warnings in Hawaii, 2014Every flash flood warning in 2014
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.