Alert archive / Hawaii / Flash Flood Warnings in 2016

Flash Flood Warning 2, NWS Honolulu, HI

March 25, 2016Kauai County, Hawaii

NWS Honolulu, HI issued this flash flood warning at Mar 25, 2016, 4:15 AM HST for Kauai 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: Mar 25, 2016, 4:15 AM HST (14:15 UTC)
Expired: Mar 25, 2016, 7:15 AM HST
In force: 3 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 12:00Z, 2.3 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: 345 J/kg
Mixed-layer CIN: -420 J/kg
Mixed-layer LCL: 596 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

022 
WGHW50 PHFO 251415
FFWHFO
HIC007-251715-
/O.NEW.PHFO.FF.W.0002.160325T1415Z-160325T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
415 AM HST FRI MAR 25 2016

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

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

* UNTIL 715 AM HST
    
* AT 413 AM HST...RADAR AND RAIN GAGES INDICATED HEAVY SHOWERS AND
  THUNDERSTORMS CONTINUING TO PERSIST OVER THE ENTIRE ISLAND. THESE
  SHOWERS AND THUNDERSTORMS CONTINUE TO FILL IN OVER THE ISLAND AND
  TRACK TOWARD THE NORTHEAST AROUND 20 MPH. THE HANALEI BRIDGE
  REMAINS CLOSED. RAINFALL RATES UP TO 2 TO 3 INCHES PER HOUR WILL
  CONTINUE OVER THE NEXT COUPLE OF HOURS.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT 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 715 AM HST IF HEAVY RAIN
PERSISTS.

LAT...LON 2221 15934 2215 15930 2205 15934 2197 15933
      2188 15943 2191 15960 2189 15961 2196 15967
      2198 15976 2202 15979 2206 15979 2216 15971
      2223 15956 2221 15951 2224 15940

$$

FOSTER

1 follow-up statement

369 
WGHW70 PHFO 251707
FFSHFO

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
707 AM HST FRI MAR 25 2016

HIC007-251712-
/O.CAN.PHFO.FF.W.0002.000000T0000Z-160325T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KAUAI HI-
707 AM HST FRI MAR 25 2016

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

KUHIO HIGHWAY AT THE HANALEI BRIDGE REMAINS CLOSED THOUGH WATER
LEVELS CONTINUE TO RECEDE. ALL OTHER PUBLIC ROADS ARE OPEN THOUGH
PONDING MAY BE AN ISSUE IN SOME AREAS. STREAM LEVELS WILL ALSO
REMAIN ELEVATED FOR SEVERAL HOURS AS RUNOFF FROM LAST NIGHT/S HEAVY
RAINFALL CONTINUES.


LAT...LON 2221 15934 2215 15930 2205 15934 2197 15933
      2188 15943 2191 15960 2189 15961 2196 15967
      2198 15976 2202 15979 2206 15979 2216 15971
      2223 15956 2221 15951 2224 15940

$$

KODAMA

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 24, 5:26 PM HST	Special Marine Warning	HFO		2 hr
Mar 24, 7:18 PM HST	Areal Flood Advisory	HFO	Hawaii	3 hr
Mar 24, 7:23 PM HST	Special Marine Warning	HFO		112 min
Mar 24, 10:22 PM HST	Flash Flood Warning	HFO	Kauai	6 hr
Mar 25, 6:43 AM HST	Special Marine Warning	HFO		2 hr
Mar 25, 8:58 AM HST	Flash Flood Watch	HFO	Honolulu, Kauai	6 hr
Mar 25, 10:34 AM HST	Areal Flood Advisory	HFO	Honolulu	3 hr
Mar 25, 1:07 PM HST	Areal Flood Advisory	HFO	Kalawao	3 hr

Nearby

Flash Flood Warnings in Hawaii, 2016 Every flash flood warning in 2016

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.