Alert archive / Hawaii / Flash Flood Warnings in 2004
Flash Flood Warning 37, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Mar 14, 2004, 12:45 AM HST for Honolulu County, Kauai County, Hawaii. It was in force for 15 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 14, 2004, 12:45 AM HST (10:45 UTC)
- Expired
- Mar 14, 2004, 4:00 PM HST
- In force
- 15 hr
- Issued by
- NWS Honolulu, HI
- Area
- Counties, with a storm outline in the text
Counties Honolulu County, HI, Kauai County, HI
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 00:00Z, 10.8 hours before the alert went out and 72 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
- 733 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 892 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 33 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 142224 FFWHI HIZ004-007-150100- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HONOLULU HI 1245 AM HST SUN MAR 14 2004 THE NATIONAL WEATHER SERVICE IN HONOLULU HAS CONTINUED THE * FLASH FLOOD WARNING FOR NORTH AND EAST HAWAII INCLUDING WINDWARD KOHALA AND HAMAKUA WEST HAWAII INCLUDING LEEWARD KOHALA * UNTIL 400 PM HST * AT 1230 AM HST...AUTOMATED RAIN GAGES INDICATED VERY HEAVY RAIN FROM 6 MILES NORTHWEST OF WAIMEA TO 3 MILES SOUTHEAST OF LAUPAHOEHOE...OR FROM 37 MILES NORTHEAST OF KAILUA-KONA TO 18 MILES NORTHWEST OF HILO. THE AREA OF HEAVY RAIN WAS NEARLY STATIONARY. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF STREAMS AND COULD ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN. 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 1999 15594 1986 15516 1994 15506 2035 15592 $$ FARRELL
1 follow-up statement
000 WGHW70 PHFO 142335 FFSHI HIZ004-150015- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 118 PM HST SUN MAR 14 2004 ...A FLASH FLOOD WARNING CONTINUES UNTIL 400 PM FOR NORTH AND EAST HAWAII INCLUDING WINDWARD KOHALA AND HAMAKUA... ...A FLASH FLOOD WARNING CONTINUES UNTIL 415 PM FOR NORTH AND EAST HAWAII INCLUDING HILO AND PUNA... ...A FLASH FLOOD WATCH CONTINUES UNTIL 400 PM FOR THE ENTIRE BIG ISLAND... AT 118 PM HST...WEATHER RADAR CONTINUED TO INDICATE VERY HEAVY RAINFALL OF AS MUCH AS 3 TO 4 INCHES OVER THE PAST HOUR NEAR AND UPSLOPE TO THE WEST AND SOUTHWEST OF HILO. AT 119 PM HST...RAINFALL CONTINUED HEAVY IN KOHALA...THE AREA AROUND KAMUELA...ALONG HIGHWAY 19 TO HONOKAA AND DOWN THE HAMAKUA COAST TO LAUPAHOEHOE. THE HEAVY RAIN WAS SHOWING LITTLE MOVEMENT AND FLASH FLOODING IS EXPECTED TO CONTINUE IN THIS AREA. THE LATEST RAINFALL REPORTS FROM GAGES AROUND THE AREA INCLUDED KAMUELA UPPER...5.62 INCHES IN THE PAST 4 HOURS KAMUELA...3.99 INCHES IN THE PAST 4 HOURS KAHUA RANCH...3.07B INCHES IN THE PAST 4 HOURS. WEATHER RADAR INDICATED THAT AS MUCH AS 12 TO 15 INCHES OF RAIN MAY HAVE FALLEN OVER PARTS OF KOHALA AND HAMAKUA IN THE PAST 12 HOURS... AND 3 TO 4 INCHES OF RAIN MAY HAVE FALLEN OVER PARTS OF HILO AND THE SURROUNDING SLOPES IN THE PAST HOUR. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR FURTHER INFORMATION FROM THE NATIONAL WEATHER SERVICE. $$ FARRELL
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 Mar 13, 8:30 PM HST, 4 hours 15 minutes earlier.
Area forecast discussion, Mar 13, 8:30 PM HST, 4 hours 15 minutes before
HAWAIIAN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 830 PM HST SAT MAR 13 2004 .SYNOPSIS... NORTHEAST WINDS WILL BRING IN GRADUALLY FEWER AND FEWER SHOWERS AS A SHEARLINE NEAR THE BIG ISLAND WEAKENS. HOWEVER...THE BIG ISLAND AND THE ISLANDS OF MAUI COUNTY WILL CONTINUE TO SEE THE BULK OF THE REMAINING SHOWERS THROUGH MIDWEEK NEXT WEEK. LEEWARD AREAS WILL BE CLEARER AND DRIER THAN WINDWARD AREAS STATEWIDE. WINDS WILL BE STRONGEST OVER THE WESTERN END OF THE MAIN ISLAND CHAIN. && .DISCUSSION... SHOWERS AND ISOLATED THUNDERSTORMS PERSIST ALONG A WEAKENING SHEARLINE EXTENDING NORTHEAST TO SOUTHWEST ACROSS EAST MAUI AND THE BIG ISLAND THIS EVENING. WHILE THE OVERALL COVERAGE OF SHOWERS HAS DECREASED SINCE THIS AFTERNOON...RADAR SHOWS THAT THERE ARE STILL PATCHES OF MODERATE TO HEAVY RAINFALL...MAINLY OVER LOWER WINDWARD SLOPES OF THE BIG ISLAND AND WITHIN THE ALENUIHAHA CHANNEL. KAUAI...OAHU AND MOLOKAI LIE WEST OF THE MAIN SHEARLINE CLOUD BAND BUT ARE AFFECTED BY WARM-TOPPED BROKEN TO OVERCAST LOW CLOUDS. THESE CLOUDS ARE LESS CONVECTIVE THAN THOSE WITHIN THE CLOUD BAND. SATELLITE LOOPS SHOW THAT NORTHEAST TRADES IN THE 20 TO 30 MPH RANGE HAVE MOVED IN BEHIND THE SHEARLINE...WITH THE STRONGEST OF THESE WINDS NOTED NEAR KAUAI AND OAHU. A LOW ALONG THE SHEARLINE FAR NORTH OF THE MAIN HAWAIIAN ISLANDS WILL MEANDER AROUND TO OUR NORTH FOR A FEW DAYS INSTEAD OF LIFTING NORTHEASTWARD...THANKS TO MEAGER BUT CONTINUED UPPER AIR SUPPORT FOR THIS FEATURE. THIS WILL TEMPORARILY BLOCK THE EASTWARD MOVEMENT OF THE FOLLOWING HIGH...PREVENTING THE EASTWARD SPREAD OF STRONG TRADE WINDS AND ALLOWING THE SHEARLINE TO REMAIN NEAR THE BIG ISLAND UNTIL IT WASHES OUT. WHILE ALL OF THE MAIN HAWAIIAN ISLANDS WILL SEE NORTHEAST TRADE FLOW THROUGH THE COMING WEEK...THE TRADES WILL BE WEAKER AND WETTER OVER THE EASTERN END OF THE ISLAND CHAIN. MODELS SHOW THE LOW FINALLY SCOOTING OFF TO THE NORTHEAST THURSDAY. A 1032 MB HIGH WILL THEN BE FREE TO MOVE INTO POSITION TO OUR NORTH...INDUCING STRONG TRADES AGAIN LATE FRIDAY INTO SATURDAY. && .HFO WATCHES/WARNINGS/ADVISORIES... SMALL CRAFT ADVISORY...ALL HAWAIIAN WATERS POWELL
The office that day
Everything else NWS Honolulu, HI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 14, 9:41 AM HST | Flash Flood Warning | HFO | Honolulu, Kauai | 3 hr |
| Mar 14, 1:15 PM 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.