Heavy Rain, Hawaii
- When
- September 25, 11:31 PM HST to September 26, 2:26 AM HST
- Where
- Hawaii County, Pahala
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 19.602, -155.523 (the zone’s center; the record gives no point)
Heavy Rain in Hawaii, September 25 to 26, 2006
Heavy showers in the southern part of the Kau District on the Big Island of Hawaii caused small stream and drainage ditch flooding, and ponding on roadways. No serious injuries or property damage were reported.
Where it happened
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.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
What happened
The episode as NWS HFO wrote it up.
Heavy showers in the southern part of the Kau District on the Big Island of Hawaii caused small stream and drainage ditch flooding, and ponding on roadways. No serious injuries or property damage were reported.
What forecasters said that day
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 Sep 25, 9:55 PM HST, 1 hour 36 minutes earlier.
Area forecast discussion, Sep 25, 9:55 PM HST, 1 hour 36 minutes before
AREA FORECAST DISCUSSION...CORRECTED NATIONAL WEATHER SERVICE HONOLULU HI 955 PM HST MON SEP 25 2006 CORRECTED TO INCLUDE THE WORD DISCUSSION .SYNOPSIS... TRADE WINDS WILL RULE THE HAWAIIAN ISLANDS THROUGH THE REST OF THE WEEK. THE CURRENT LIGHT TRADES WILL PICK UP A NOTCH WEDNESDAY AND PERSIST INTO THE WEEKEND. A WEAK TROUGH OF LOW PRESSURE AT THE MID AND UPPER LEVELS OF THE ATMOSPHERE WILL ENHANCE SOME OF THE SHOWERS ACROSS THE STATE FOR THE NEXT COUPLE OF DAYS. && .DISCUSSION... MAJORITY OF THE MODELS AGREE ON TROUGHING OVER THE MAIN HAWAIIAN ISLANDS THROUGH THURSDAY FOLLOWED BY A MODERATE TRADE WIND REGIME INTO THE EARLY PART OF THE WEEKEND. MOISTURE REMAINS MARGINAL IN AMOUNT EXCEPT FOR THE BIG ISLAND. THE DEPTH OF THE MOISTURE WILL BE SHALLOW AS WELL ACROSS THE SMALLER ISLANDS WHERE IT IS CONFINED TO ONLY WITHIN 10 THOUSAND FEET. WITH LIGHT TRADES...EXPECT AFTERNOON CLOUDS TO FORM OVER LAND AREAS...AND THERE JUST MIGHT BE A HEAVY SHOWER OR TWO. THE BEST DYNAMICS IS TOMORROW...TUESDAY...OVER KAUAI AND OAHU WITH LIFTED INDICES OF MINUS 2 TO 4 AS PER GFS. THE BIG ISLAND ON THE OTHER HAND HAS THE MOISTURE AND DEPT BUT NOT MUCH SO THE DYNAMICS. CURRENT FORECAST PACKAGE FOR THE BIG ISLAND LOOKS FINE INTO TUESDAY...THAT IS WITH THUNDERSTORM IN THE FORECAST. CURRENTLY...THERE IS AN ISOLATED THUNDERSTORM IN HILO BAY...AND SOME SCATTERED SHOWERS ALONG THE KAU COAST. ELSEWHERE...SCATTERED SHOWERS ARE PRESENT OVER ON EAST MAUI IN THE HANA AREA. SHOWERS ARE RATHER SPOTTY ELSEWHERE OVER THE WINDWARD AND MOUNTAIN AREAS OF KAUAI AND OAHU. && .MARINE... THE REMNANTS OF FORMER HURRICANE YAGI IS EXPECTED TO STRENGTHEN TO HURRICANE FORCE IN THE NEXT 12 HOURS AS IT PASSES WELL NORTH OF THE HAWAIIAN ISLANDS. WAVE MODEL SUGGEST A SWELL FROM YAGI TO REACH THE HAWAIIAN ISLANDS FRIDAY WITH SURF HEIGHTS NEAR ADVISORY LEVELS FOR THE NORTH AND WEST FACING SHORES. .HFO WATCHES/WARNINGS/ADVISORIES... NONE. && LAU
The radar
The national radar mosaic for the moment the first event began.
Event by event
1 heavy rain. Local standard time, as filed.
What these are
- Heavy Rain
- Rainfall totals unusual for the place and season that did not produce a flood.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
More
Every storm in Hawaii in 2006Every state in 2006This day in weather historyWarnings in Hawaii, September 2006
Sources
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 2026-09-30. Each event’s entry at NCEI: 5534380.