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 10, 8:30 PM HST, 6 hours 7 minutes earlier.
HAWAIIAN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 830 PM HST MON MAY 10 2004 .SYNOPSIS...TRADE WINDS WILL BE RETURNING AND SHOWERS DIMINISHING TUESDAY. NEXT WEEK MAY SEE TRADE WINDS DISAPPEAR AND SHOWERS AGAIN INCREASE. && .DISCUSSION...THE SHEARLINE BAND OF SHOWERS HAS REMAINED STATIONARY AFFECTING KAUAI AND OAHU. THE BAND HAS STEADILY WEAKENED SINCE YESTERDAY. SOME OF ITS RESIDUAL SHOWERS MAY CONTINUE TO AFFECT THE WINDWARD SIDES OF KAUAI AND OAHU A BIT LONGER AS THE TRADE WINDS GRADUALLY TAKE HOLD...RISING PRESSURES OVER THE STATE TODAY BODE WELL FOR THEIR RETURN TOMORROW. FIRMING TRADE WINDS SHOULD MINIMIZE THE AFTERNOON CONVECTION THAT MAUI COUNTY EXPERIENCED TODAY...THE BIG ISLANDS CONVECTIVE SHOWERS OVER ITS KAU SLOPES AIDED BY INCOMING MOISTURE FROM THE SOUTHEAST SHOULD ALSO DIMINISH A BIT. MOST MODELS SHOW A WEAKENING OF THE TRADE WIND GRADIENT BY NEXT WEEK END WITH THE APPROACH OF ANOTHER..THO WEAKER..UPPER LEVEL TROUGH. WHAT IS AT VARIANCE IS THE UPPER TROUGHS INFLUENCE ON THE SURFACE. THEY VARY FROM A WEAK INVERTED TROUGH JUST EAST OF THE ISLANDS TO AN AGGRESSIVE FORMATION OF A LOW TO OUR WEST...OR FROM A LOCALIZED AFTERNOON CONVECTIVE PATTERN TO AN ACTIVE FRONT LIKE SHOWER BAND. WE WILL CONTINUE TO MONITOR FUTURE MODEL DEVELOPMENT BEFORE CHANGING THE CURRENT FORECAST PACKAGE. && .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 caused ponding of roadways, and drainage ditch and small stream flooding in windward sections of west Maui, including the communities of Waiehu and Wailuku. There were no reports of serious injuries or property damage.
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: 5431411.