Alert archive / Hawaii / Flash Flood Warnings in 2003

Flash Flood Warning 10, NWS Honolulu, HI

December 7, 2003

NWS Honolulu, HI issued this flash flood warning at Dec 7, 2003, 1:00 PM HST. 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 counties it named.

The facts

Issued
Dec 7, 2003, 1:00 PM HST (23:00 UTC)
Expired
Dec 7, 2003, 4:00 PM HST
In force
3 hr
Issued by
NWS Honolulu, HI
Area
Whole counties

The text

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

000 
WGHW50 PHFO 072301
FFWHI 
HIZ002-080200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HONOLULU HI
1 PM HST SUN DEC 7 2003

THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  OAHU

* UNTIL 4 PM HST

* AT 1254 PM HST...RADAR INDICATED VERY HEAVY RAIN OVER THE KOOLAU 
  MOUNTAINS FROM HAUULA TO  KANEOHE.  THE AREA OF HEAVY RAIN WAS 
  NEARLY   STATIONARY.

* LOCATIONS IN THE WARNING INCLUDE HAUULA...KAAAWA...KAHALUU...
  KANEOHE AND PUNALUU

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF 
STREAMS...HIGHWAYS...UNDERPASSES AND LOW LYING AREAS.

MOTORISTS SHOULD BE ALERT FOR FLOODING AND SHOULD NOT ATTEMPT TO
CROSS FAST FLOWING OR RISING WATER. MANY FLASH FLOOD DEATHS OCCUR
WHEN MOTORISTS TRY CROSSING FLOODED ROADWAYS.

ESCAPE RISING WATER BY CLIMBING DIRECTLY TO HIGHER GROUND. NEVER TRY
TO OUTRACE A FLOOD...EITHER ON FOOT OR IN YOUR VEHICLE. DO NOT CAMP
NEAR STREAMS OR OTHER AREAS SUBJECT TO FLOODING.

$$
LAT...LON 2157 15798 2137 15784 2141 15777 2162 15791

CRAIG
2 follow-up statements
000 
WGHW70 PHFO 080025
FFSHI 
HIZ002-080130-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HONOLULU HI
225 PM HST SUN DEC  7 2003

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 PM HST FOR 
OAHU...

...AN URBAN AND SMALL STREAM FLOOD ADVISORY REMAINS IN EFFECT FOR 
CENTRAL OAHU...

RADAR INDICATES THAT THE RAIN HAS DIMINISHED SLIGHTLY OVER THE 
KOOLAU MOUNTAINS AND WINDWARD DURING THE LAST HOUR. THE RAIN WAS SO 
HEAVY HOWEVER...THAT IT WILL TAKE SOME TIME FOR STREAMS TO LOWER 
BELOW BANKFULL. STANDING WATER IN LOW LYING AREAS WILL ALSO CONTINUE 
OVER THE NEXT COUPLE OF HOURS.

THE HEAVY RAIN OVER CENTRAL OAHU HAS SHIFTED OVER THE LAST HOUR FROM 
WAHIAWA AND MILILANI SOUTHWARD TO WAIPIO...WAIPAHU AND PEARL HARBOR. 
FLOODING OF LOW LYING AREAS IN CENTRAL OAHU WILL CONTINUE FOR 
ANOTHER HOUR OR TWO.

THESE STORMS ARE SHOWING LITTLE MOVEMENT AND ADDITIONAL HEAVY 
RAINFALL CAN BE EXPECTED TO INCREASE RUNOFF IN THIS AREA.

STAY TUNED TO NOAA WEATHER RADIO...LOCAL TV OR RADIO FOR FURTHER 
NATIONAL WEATHER SERVICE INFORMATION.
 
$$
CRAIG
000 
WGHW70 PHFO 080032 CCA
FFSHI 
HIZ002-080130-

FLASH FLOOD STATEMENT CORRECTED
NATIONAL WEATHER SERVICE HONOLULU HI
230 PM HST SUN DEC  7 2003

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 4 PM HST FOR 
OAHU...

...AN URBAN AND SMALL STREAM FLOOD ADVISORY REMAINS IN EFFECT FOR 
CENTRAL OAHU...

RADAR INDICATES THAT THE RAIN HAS DIMINISHED SLIGHTLY OVER THE 
KOOLAU MOUNTAINS AND WINDWARD DURING THE LAST HOUR. THE RAIN WAS SO 
HEAVY HOWEVER...THAT IT WILL TAKE SOME TIME FOR STREAMS TO LOWER 
BELOW BANKFULL. STANDING WATER IN LOW LYING AREAS WILL ALSO CONTINUE 
OVER THE NEXT COUPLE OF HOURS.

THE HEAVY RAIN OVER CENTRAL OAHU HAS SHIFTED OVER THE LAST HOUR FROM 
WAHIAWA AND MILILANI SOUTHWARD TO WAIPIO...WAIPAHU AND PEARL HARBOR. 
FLOODING OF LOW LYING AREAS IN CENTRAL OAHU WILL CONTINUE FOR 
ANOTHER HOUR OR TWO.

THESE STORMS ARE SHOWING LITTLE MOVEMENT AND ADDITIONAL HEAVY 
RAINFALL CAN BE EXPECTED TO INCREASE RUNOFF IN THIS AREA.

STAY TUNED TO NOAA WEATHER RADIO...LOCAL TV OR RADIO FOR FURTHER 
NATIONAL WEATHER SERVICE INFORMATION.
 
$$
CRAIG

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Honolulu, HI wrote its last area forecast discussion before this flash flood warning went out at Dec 7, 10:40 AM HST, 2 hours 20 minutes earlier.

Area forecast discussion, Dec 7, 10:40 AM HST, 2 hours 20 minutes before
HAWAIIAN ISLANDS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
1040 AM HST SUN DEC 7 2003

.SYNOPSIS...THE ATMOSPHERE REMAINS UNSTABLE...WHICH MEANS THERE IS
THE POSSIBILITY OF HEAVY SHOWERS AND EVEN A THUNDERSTORM OR TWO
TODAY. THE TRADE WINDS WILL STRENGTHEN MONDAY WHEN HIGH PRESSURE
MOVES NORTH OF THE STATE.

&&

.DISCUSSION...
NO CHANGE FROM PREVIOUS THINKING. AN UPPER LEVEL LOW WEST OF KAUAI
IS STILL CAUSING THE AIRMASS OVER THE ISLANDS TO BE UNSTABLE. THE
RESULT BEING ISOLATED THUNDERSTORMS OVER WATER THIS MORNING. HEAVY
SHOWERS AND PERHAPS A THUNDERSTORM OR TWO IS EXPECTED WITH THIS
AFTERNOONS WARM TEMPERATURES. COOLER TEMPERATURES OVER LAND WILL
RESULT IN THE DEMISE OF THE CONVECTION TONIGHT...BUT THE HEAVY STUFF
SHOULD CONTINUE OVER THE WARM OCEAN WATERS. THE LOW IS FORECAST TO
LIFT OUT TO THE NORTHEAST...LEAVING BEHIND WARMER TEMPERATURES ALOFT
AND A MORE STABLE ATMOSPHERE TOMORROW. AT THE SURFACE...A HIGH
CROSSING THE DATELINE NEAR 35N WILL MOVE NORTH THEN NORTHEAST OF THE
STATE OVER THE NEXT COUPLE OF DAYS. THE TRADES WILL PICK UP IN THE
TIGHTER PRESSURE GRADIENT SOUTH OF THE HIGH.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
NONE

&&

CRAIG

Nearby

Flash Flood Warnings in Hawaii, 2003Every flash flood warning in 2003

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.