Alert archive / Hawaii / Flash Flood Warnings in 2004
Flash Flood Warning 15, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Feb 26, 2004, 1:40 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 outline as issued.
The facts
- Issued
- Feb 26, 2004, 1:40 PM HST (23:40 UTC)
- Expired
- Feb 26, 2004, 4:45 PM HST
- In force
- 3 hr
- Issued by
- NWS Honolulu, HI
- Area
- Counties, with a storm outline in the text
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Lihue, (PHLI), launched 12:00Z, 11.7 hours before the alert went out and 149 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
- 714 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 735 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGHW50 PHFO 262341 FFWHI HIZ002-270245- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HONOLULU HI 140 PM HST THU FEB 26 2004 THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A * FLASH FLOOD WARNING FOR OAHU * UNTIL 445 PM HST * AT 135 PM HST...RADAR INDICATED VERY HEAVY RAIN OVER THE SOUTHERN HALF OF OAHU. THE AREA OF HEAVY RAIN WAS MOVING NORTH SLOWLY. 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. TURN AROUND...DON/T DROWN 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 2167 15799 2154 15826 2127 15821 2125 15764 $$ KODAMA
1 follow-up statement
000 WGHW70 PHFO 270041 FFSHI HIZ002-270245- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 240 PM HST THU FEB 26 2004 ...A FLASH FLOOD WARNING CONTINUES UNTIL 445 PM FOR OAHU... AT 235 PM HST...WEATHER RADAR CONTINUED TO INDICATE VERY HEAVY RAINFALL OCCURRING ACROSS PORTIONS OF OAHU. HEAVIEST RAINFALL HAS BEEN IN THE WAIMANALO AREA WHERE RADAR ESTIMATES UP TO 4 INCHES OF RAIN HAS FALLEN SINCE 130 PM. VERY HEAVY RAIN HAS ALSO OCCURRED NEAR AIEA. THE THUNDERSTORMS RESPONSIBLE FOR THE HEAVY RAINS ARE SLOWLY MOVING NORTH. LOCATIONS IN CENTRAL OAHU AND ALONG THE WINDWARD SIDE OF OAHU NORTH OF KANEOHE CAN EXPECT HEAVY RAINS OF 1 TO 2 INCHES TO FALL AS IN A SHORT PERIOD OF TIME. DO NOT DRIVE THROUGH WATER WHICH COVERS THE ROAD...OR TRY TO CROSS FAST FLOWING STREAMS ON FOOT. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR FURTHER INFORMATION FROM THE NATIONAL WEATHER SERVICE. $$ NASH
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 Feb 26, 10:00 AM HST, 3 hours 40 minutes earlier.
Area forecast discussion, Feb 26, 10:00 AM HST, 3 hours 40 minutes before
HAWAIIAN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 10 AM HST THU FEB 26 2004 .SYNOPSIS... THE RAINY AND WINDY WEATHER IS BEGINNING TO AFFECT THE ISLANDS. HEAVY SHOWERS AND THUNDERSTORMS ARE FORMING SOUTH OF THE ISLANDS AND THESE WILL MOVE OVER THE STATE FROM MAUI COUNTY TO KAUAI LATER TODAY THROUGH FRIDAY. A FRONT NORTHWEST OF THE STATE WILL CROSS THE STATE BEGINNING WITH KAUAI FRIDAY MORNING...THEN MOVING OVER THE OTHER ISLANDS FRIDAY AFTERNOON AND FRIDAY NIGHT. THE UNSETTLED WEATHER WILL CONTINUE THROUGH THE WEEKEND AND INTO THE EARLY PART OF NEXT WEEK. && .DISCUSSION... LOW PRESSURE DEVELOPING NORTHWEST OF THE HAWAIIAN ISLANDS WILL PUSH A FRONT ACROSS THE STATE FRIDAY INTO SATURDAY. ISOLATED TO SCATTERED SHOWERS WITH SOME THUNDERSTORMS WILL AFFECT THE ISLANDS AHEAD OF THE FRONT...WITH A NEARLY SOLID BAND OF HEAVY SHOWERS AND THUNDERSTORMS MOVING ACROSS THE STATE WITH THE FRONT FRIDAY INTO SATURDAY. A DEVELOPING UPPER LEVEL LOW WILL MOVE BY NEAR THE STATE OVER THE WEEKEND...KEEPING OUR WEATHER UNSETTLED INTO MONDAY. LIGHT SOUTHERLY WINDS THIS MORNING WILL BE INCREASING THIS AFTERNOON AND TONIGHT... AND MAY BECOME STRONG ENOUGH TO WARRANT A HIGH WIND WARNING OR WIND ADVISORIES LATER TONIGHT INTO FRIDAY. WINDS WILL SHIFT TO NORTHERLY BEHIND THE FRONT AND BE STRONG AND GUSTY...AS WELL. A FLASH FLOOD WATCH AND A HIGH WIND WATCH HAVE BEEN ISSUED FOR THE SMALLER ISLANDS FROM KAUAI TO MAUI TO COVER THE PERIOD OF MOST LIKELY STRONG WINDS AND HEAVY RAINFALL FOR THESE ISLANDS...THROUGH FRIDAY. && .MARINE... A NORTHWEST SWELL GENERATED BY A LARGE LOW NEAR THE KAMCHATKA PENINSULA WILL ARRIVE NEAR KAUAI TONIGHT AND SPREAD DOWN THE CHAIN FRIDAY. A HIGH SURF ADVISORY WILL LIKELY BE ISSUED FOR THIS SWELL AT 4 PM THIS AFTERNOON...BUT THE SWELL IS EXPECTED TO BE BIG ENOUGH TO WARRANT THE ISSUANCE OF A HIGH SURF WARNING FOR FRIDAY NIGHT AND SATURDAY. THIS WILL ALSO BE AT THE TIME WHEN STRONG SOUTH OR SOUTHWEST WINDS WILL BE BLOWING ACROSS THE AREA...SO EXPECT ISSUANCE OF SMALL CRAFT ADVISORIES...AND POSSIBLY GALE WARNINGS. && .UPDATE... FORECASTS UPDATED FOR MORE HEAVY SHOWERS AND POSSIBLE THUNDERSTORMS SMALLER ISLANDS TODAY THROUGH FRIDAY. && .HFO WATCHES/WARNINGS/ADVISORIES... A HIGH WIND WATCH THROUGH FRIDAY FOR ALL BUT THE BIG ISLAND A FLOOD WATCH THROUGH FRIDAY FOR ALL BUT THE BIG ISLAND FARRELL
Nearby
Flash Flood Warnings in Hawaii, 2004Every flash flood warning in 2004
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.