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 19, 3:30 PM HST, 20 minutes earlier.
NARRATIVE SYNOPTIC DISCUSSION FOR AMERICAN SAMOA AND THE INDEPENDENT STATE OF SAMOA TONIGHT THROUGH FRIDAY... LITTLE CHANGE IS INDICATED IN YOUR WEATHER PATTERN AS A WEAK RIDGE REMAINS CLOSE BY TO THE SOUTH. A SMALL SHOWER LINEE TRAVELLING IN THE TRADE FLOW IS PRESENTLY PRODUCING A FEW HEAVY SHOWERS AND THUNDERSTORMS JUST EAST AND NORTH OF YOU. OTHERWISE CONDITIONS REMAIN STABLE. WE THUS EXPECT LIGHT TRADE WINDS TO PREVAIL WITH AN ISOLATED SHOWER HERE AND THERE. A SOUTH SWELL NEAR 4 FEET IS EXPECTED DURING THE NEXT FEW DAYS. OUTLOOK FOR SATURDAY THROUGH MONDAY... NO SIGNIFICANT CHANGES EXPECTED THROUGH MONDAY. SO MORE LIGHT EASTERLY TRADE WINDS WITH PARTLY CLOUDY SKIES AND LITTLE IN THE WAY OF RAINFALL EXPECTED. SOME INCREASE IN SHOWERS MAY OCCUR ON MONDAY AND THE FOLLOWING DAY. NARRATIVE DISCUSSION FOR TUVALU TODAY THROUGH SATURDAY...TUVALU TIME... A FEW SHOWERS ARE MOVING WESTWARD THROUGH YOUR AREA WITH MOST OF THE SHOWERS ALREADY WEST OF YOU. MOSTLY SUNNY TO PARTLY CLOUDY SKIES ARE MOVING IN FOR THE NEXT FEW DAYS WITH WINDS LIGHT TRADE WINDS. NO SIGNIFICANT SWELL. EFFECTIVE MAY 26...2004 AT 1800 UTC...THE NATIONAL WEATHER SERVICE OFFICE IN HONOLULU WILL NO LONGER ISSUE THIS DISCUSSION. THE NATIONAL WEATHER SERVICE IN PAGO PAGO WILL BEGIN ISSUING THIS PRODUCT ON MAY 26...2004.
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
Heavy showers in lower upslope sections of the Kau District on the Big Island of Hawaii caused small stream and drainage ditch flooding and ponding of roadways. No serious injuries or property damage were reported.
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: 5431476.