Alert archive / Hawaii / Flash Flood Warnings in 2004
Flash Flood Warning 20, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Feb 27, 2004, 11:42 AM 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 27, 2004, 11:42 AM HST (21:42 UTC)
- Expired
- Feb 27, 2004, 2:45 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
Hilo, (PITO), launched 12:00Z, 9.7 hours before the alert went out and 359 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1073 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGHW50 PHFO 272145 FFWHI HIZ002-280045- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HONOLULU HI 1142 AM HST FRI FEB 27 2004 THE NATIONAL WEATHER SERVICE IN HONOLULU HAS EXTENDED A * FLASH FLOOD WARNING FOR OAHU * UNTIL 245 PM HST * AT 1140 AM HST...RADAR INDICATED VERY HEAVY RAIN OVER HONOLULU AND HEAVY RAIN OVER CENTRAL AND NORTH OAHU. 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...DO NOT 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. STAY TUNED TO NOAA WEATHER RADIO OR OTHER LOCAL MEDIA SOURCES FOR THE LATEST SEVERE WEATHER INFORMATION. REPORT FLOODING TO THE POLICE FOR IMMEDIATE RELAY TO THE NATIONAL WEATHER SERVICE. LAT...LON 2125 15762 2174 15797 2159 15832 2128 15813 $$ KODAMA
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 27, 10:00 AM HST, 1 hour 42 minutes earlier.
Area forecast discussion, Feb 27, 10:00 AM HST, 1 hour 42 minutes before
HAWAIIAN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 10 AM HST FRI FEB 27 2004 .SYNOPSIS... STRONG WINDS...HEAVY SHOWERS AND THUNDERSTORMS NOW AFFECTING KAUAI AND OAHU WILL SPREAD TO MAUI COUNTY THIS AFTERNOON AND TO THE BIG ISLAND TONIGHT. A COLD FRONT...STILL WEST OF KAUAI THIS MORNING... WILL MOVE EASTWARD ACROSS THE STATE THROUGH SATURDAY. COOL... UNSTABLE AIR BEHIND THE FRONT WILL KEEP ISOLATED HEAVY SHOWERS AND POSSIBLE AFTERNOON THUNDERSTORMS OVER THE ISLANDS SATURDAY...BUT MORE SUNSHINE ALONG WITH LIGHT WINDS WILL MAKE FOR A BETTER SUNDAY. && .DISCUSSION... A COLD FRONT STILL WEST OF KAUAI IS MOVING EAST SOUTHEAST AT ABOUT 20 MPH. THE FRONT HAS HEAVY SHOWERS AND THUNDERSTORMS IN BANDS TO ITS EAST. THESE BANDS DROPPED AS MUCH AS 9 INCHES OF RAINFALL ON THE ISLAND OF KAUAI OVERNIGHT...AND ARE EXPECTED TO BRING 2 TO 6 INCHES OF RAINFALL TO OAHU TODAY AS THEY MOVE THROUGH. THE HEAVY RAIN WILL MOVE OVER MAUI COUNTY THIS AFTERNOON...REACHING THE BIG ISLAND OF HAWAII TONIGHT. THE FRONT AND ASSOCIATED HEAVY RAIN BANDS ARE ASSOCIATED WITH A DEVELOPING LOW PRESSURE SYSTEM NOW NORTH OF THE STATE. THE LOW IS EXPECTED TO MOVE SLOWLY OVER THE NEXT 24 TO 36 HOURS...AS THE UPPER LOW ASSOCIATED WITH THIS SYSTEM DOES A LOOP NORTH OF THE STATE...THEN MOVE OFF TOWARD THE NORTH NORTHEAST. THE UPPER LOW WILL CONTINUE INSTABILITY OVER THE ISLANDS ON SATURDAY... BUT MORE STABLE CONDITIONS WILL REPLACE THE WET WEATHER BEGINNING ON SUNDAY AS THE SURFACE AND UPPER LEVEL LOWS MOVE NORTH NORTHEAST AND AWAY FROM THE STATE. && .MARINE... A NORTHWEST SWELL GENERATED BY A LARGE LOW NEAR THE KAMCHATKA PENINSULA WILL RESULT IN RISING SURF TO WARNING LEVELS TODAY. && .HFO WATCHES/WARNINGS/ADVISORIES... HIGH WIND WARNING TODAY KAUAI...OAHU...MOLOKAI...LANAI AND MAUI FLOOD WATCH TODAY KAUAI...OAHU...MOLOKAI...LANAI AND MAUI HIGH WIND WATCH THROUGH SATURDAY BIG ISLAND SUMMITS HIGH SURF WARNING NORTH AND WEST FACING SHORES OF KAUAI...OAHU... MOLOKAI AND MAUI HIGH SURF ADVISORY WEST FACING SHORES OF THE BIG ISLAND OF HAWAII FARRELL
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 26, 4:35 PM HST | Flash Flood Warning | HFO | 2 hr | |
| Feb 27, 12:15 AM HST | Flash Flood Warning | HFO | Kauai | 3 hr |
| Feb 27, 3:15 AM HST | Flash Flood Warning | HFO | Kauai | 3 hr |
| Feb 27, 6:16 AM HST | Flash Flood Warning | HFO | Kauai | 3 hr |
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.