1 heavy rain, 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 May 12, 4:00 AM HST, 5 hours 45 minutes earlier.
HAWAIIAN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 400 AM HST WED MAY 12 2004 .SYNOPSIS...TRADE WINDS WILL NOT LAST LONG AS WE HEAD FOR A CLOUDY AND POTENTIALLY SHOWERY PERIOD. && .DISCUSSION...TRADE WINDS HAVE BEEN DISSAPOINTING IN THEIR LESS THAN FULL RETURN. BUT NO MATTER AS THEY ARE NOT EXPECTED TO BE AROUND MUCH LONGER...AN APPROACHING UPPER LEVEL TROUGH WILL BE FORMING A SURFACE TROUGH OR A SMALL SCALE LOW NEAR THE ISLANDS TOMORROW TURNING WINDS WEAK THROUGH THE WEEKEND. THE TROUGH WILL BE ADDING INSTABILITY AND WITH SOME IMPORTED MOISTURE FROM THE SOUTHWEST A POSSIBLE WET WEEKEND IS IN STORE. THE INCOMING THICK CIRRUS ASSURES US A CLOUDY DAY TODAY ONWARD BUT INCREASING RAINFALL IS PROJECTED IN THE FRIDAY TO SUNDAY TIME PERIOD. THIS IS NOT THE EASIEST SCENARIO TO FORECAST IF NOT FOR THE ALREADY SOLID CIRRUS SHIELD MOVING IN FROM THE WEST. THE PATTERN IS UNUSUAL FOR THIS TIME OF YEAR AS WE GO INTO THE MORE TRADE WIND DOMINANT AND DRIER SUMMER SEASON. && .WATCHES/WARNINGS/ADVISORIES...NONE. MATSUDA
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
Heavy showers brought ponding of roadways, and small stream and drainage ditch flooding to coastal sections of eastern Kauai. There were no reports of property damage or serious 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, May 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: 5431470.