1 heavy rain, as filed by the National Weather Service.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, 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 the first event at Mar 27, 8:00 AM HST, 2 hours 15 minutes earlier.
HAWAIIAN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 1000 AM PST SAT MAR 27 2004 .SYNOPSIS...AFTER ANOTHER DAY OF HEAVY SHOWERS AND ISOLATED THUNDERSTORMS FOR MAUI AND THE BIG ISLAND...DRIER TRADE WINDS WILL RETURN TO THE ISLANDS FROM WEST TO EAST TONIGHT...THANKS TO HIGH PRESSURE MOVING IN TO OUR NORTHWEST AND AN UPPER TROUGH MOVING AWAY TO OUR EAST. WET WEATHER WILL GRADUALLY RETURN BEGINNING MIDWEEK AS A SHEARLINE APPROACHES. && .DISCUSSION...AN UPPER TROUGH WHICH WAS PARKED TO THE WEST OF THE ISLANDS ALL LAST WEEK IS NOW MOVING EASTWARD. WATER VAPOR SATELLITE LOOPS CORROBORATE MODEL OUTPUT SHOWING THE TROUGH AXIS EXTENDS ACROSS OAHU AND THE ISLANDS OF MAUI COUNTY THIS MORNING. LINGERING INSTABILITY ALONG THE EASTERN FLANK OF THE TROUGH CONTINUES TO TRIGGER HEAVY SHOWERS AND THUNDERSTORMS OVER EAST MAUI. SIMILAR ACTIVITY MAY OCCUR OVER PORTIONS OF THE BIG ISLAND LATER TODAY. THE TROUGH WILL MOVE EAST OF THE BIG ISLAND BY TONIGHT...CLEARING ISLAND SKIES AND SETTLING OUR WEATHER. AT THE SURFACE...A 1027 MB HIGH IS CENTERED NEAR 31N 175W...FAR NORTHWEST OF HAWAII. NO LONGER BLOCKED BY INDUCED SURFACE TROUGHING...THIS HIGH WILL MOVE EASTWARD OVER THE NEXT FEW DAYS...USHERING IN TRADES THROUGH THE MIDDLE OF NEXT WEEK. MODELS SHOW A TROUGH APPROACHING FROM THE WEST AND REACHING THE ISLANDS NEXT WEDNESDAY OR THURSDAY...WEAKENING THE TRADE WINDS AND INCREASING CLOUD AND SHOWER COVERAGE. HIGH PRESSURE FOLLOWING ON THE HEELS OF THE SHEARLINE WILL STRENGTHEN TRADE WINDS AGAIN BY NEXT WEEKEND. HOWEVER...THE MOISTURE FIELD FROM THE SHEARLINE WILL BE CONSERVED OVER THE ISLANDS...KEEPING WINDWARD AND MAUKA AREAS RATHER WET FROM MIDWEEK ONWARD EVEN AFTER THE TRADES RESTRENGTHEN. && .WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WARNING...EAST MAUI UNTIL 1145 AM HST. POWELL
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
Heavy showers produced ponding of roadways, and small stream and drainage ditch flooding in windward sections of the Hilo, Puna, and Kau districts on the Big Island of Hawaii. There were no reports of serious property damage or injuries.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Hawaii in 2004Every state in 2004This day in weather historyWarnings in Hawaii, March 2004
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5431463.