1 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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 23, 10:00 AM HST, 1 hour 30 minutes earlier.
HAWAIIAN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 1000 AM HST TUE MAR 23 2004 .SYNOPSIS... THE OCCASIONALLY HEAVY RAIN WILL BE SLOWLY DIMINISHING FROM TOMORROW. TRADE WINDS WILL REMAIN GUSTY THROUGH THE WEEK. && .DISCUSSION...THERE ARE TWO INGREDIENTS FOR HAWAIIS WEATHER. THE FIRST IS THE PERSISTENT MOISTURE OF AN OLD SHEARLINE THAT FIRST ARRIVED OVER THE STATE THIS PAST WEEK END...ITS MOISTURE HAS ESSENTIALLY STALLED OVER THE ISLANDS AND WILL LIKELY REMAIN WITH US THROUGH SATURDAY. THE SECOND HAS BEEN AN UPPER LEVEL TROUGH WHICH HAS ENHANCED SOME OF THE SHEARLINE SHOWERS INTO HEAVIER ONES. THE TROUGH...AT ITS STRONGEST TODAY...SHOULD BEGIN GRADUALLY WEAKENING TOMORROW LOSING MOST ITS HEAVY RAIN ENHANCING ABILITY BY THURSDAY. MEANWHILE AT THE SURFACE HIGH PRESSURE RIDGING WILL REMAIN STRONG THROUGHOUT THE NEXT SEVEN DAYS KEEPING TRADE WINDS PERSISTENTLY STRONGER THAN NORMAL. IN SUM...THE TREND IS TOWARD SLOW IMPROVEMENT AFTER TODAY WITH SOME LEEWARD SUN..WHICH HAS ALREADY RETURNED TO KAUAI THIS MORNING..RETURNING TO ALL ISLANDS THURSDAY ONWARD. && .WATCHES/WARNINGS/ADVISORIES... HIGH SURF ADVISORY...EAST AND NORTH FACING SHORES FLASH FLOOD WATCH....ALL ISLANDS EXCEPT KAUAI MATSUDA
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Heavy rain caused the Lower Hamakua Ditch to overflow its banks near the community of Kapulena. The flooding waters then forced the closure of Highway 240 for a time near the town. No serious injuries or property damage were reported, however.
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: 5431385.