Heavy Rain in Hawaii, August 28, 2005

Name: Heavy Rain in Hawaii, August 28, 2005
Start: 2005-08-28T16:39
End: 2005-08-28T19:45
Location: Hawaii

August 28, 2005 · NWS HFO · 1 event in 1 county or zone

Heavy showers returned to the lee side of the Big Island of Hawaii, causing ponding of roadways, and small stream and drainage ditch flooding. 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.

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Floods
Wind
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Winter weather
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Marine and coastal
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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 returned to the lee side of the Big Island of Hawaii, causing ponding of roadways, and small stream and drainage ditch flooding. 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 Aug 28, 4:00 PM HST, 39 minutes earlier.

Area forecast discussion, Aug 28, 4:00 PM HST, 39 minutes before

HAWAIIAN ISLANDS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
400 PM HST SUN AUG 28 2005

.SYNOPSIS...
A TROUGH OF LOW PRESSURE JUST NORTH OF THE MAIN HAWAIIAN ISLANDS
CONTINUES TO TRACK WEST. IT WILL KEEP WINDS LIGHT OVER OUR
AREA...WITH LAND AND SEA BREEZES DEVELOPING DURING THE NIGHT AND
DAY. LIGHT TO MODERATE TRADE WINDS ARE EXPECTED TO SLOWLY RETURN TO
OUR AREA BY THE MIDDLE OF THE WEEK AND SHOULD PREVAIL THROUGH THE
REST OF THE WEEK AS HIGH PRESSURE REBUILDS NORTH OF THE ISLANDS.
&&

.DISCUSSION...
ACTIVE AFTERNOON ACROSS THE MAIN HAWAIIAN ISLAND CHAIN WITH SHOWER
ACTIVITY. 00Z SOUNDINGS SHOWING THE INVERSION HAS ERODED AWAY AND
THEREFORE HEAVY SHOWERS DID DEVELOP ACROSS THE STATE. RAINFALL RATE
OF NEARLY 4 INCHES AN HOUR WAS REPORTED IN THE KONA DISTRICT OF THE
BIG ISLAND THIS AFTERNOON PROMPTING A FLOOD ADVISORY. SHOWERS SHOULD
BEGIN TO DIMINISH AS EVENING SETS IN. IN THE FORECAST ADDED AN EARLY
EVENING PERIOD TO DEAL WITH ANY HEAVY SHOWERS STILL AROUND.

THE PROBLEM IS THE TROUGH OF LOW PRESSURE MOVING ACROSS THE ISLAND
CHAIN VERY SLOWLY THIS AFTERNOON...THE FOCUS OF THE HEAVIER
PRECIPITATION HAS BEEN IN THE EASTERN ISLANDS. TOMORROW THE FOCUS
SHOULD SHIFT WEST TO THE WESTERN ISLANDS IN THE AFTERNOON. THE UPPER
LEVEL TROUGH OF LOW PRESSURE TO THE NORTHEAST OF THE ISLANDS
TODAY...SHIFTS TO THE NORTHWEST BY TOMORROW /MONDAY/ NIGHT. THIS
SHOULD CUT OFF THE ENHANCED SHOWER ACTIVITY FOR THE STATE.

AFTER MONDAY WE SHOULD SLOWLY PHASE BACK INTO TRADITIONAL TRADE WIND
WEATHER FOR THE MAIN HAWAIIAN ISLANDS. THE FORECAST MODELS HAVE ALL
KEPT WITH PRETTY STEADY WITH SOLUTIONS FOR THE WORK WEEK AHEAD INTO
NEXT WEEKEND. WILL CONTINUE WITH THE ON-GOING FORECAST FOR THE MID
AND LATE TERM OF THE FORECAST PACKAGE.

&&

.MARINE...
A SERIES OF LOWS TO THE SOUTH OF NEW ZEALAND HAVE PRODUCED
SWELLS THAT ARE EXPECTED TO BEGIN ARRIVING IN OUR WATERS ON
WEDNESDAY. SURF ALONG SOUTH FACING SHORES WILL BE ELEVATED FROM
WEDNESDAY THROUGH NEXT WEEKEND DUE TO FACT THAT SEVERAL STRONG LOWS
HAVE TRAVERSED THE AREA SOUTH OF NEW ZEALAND. IN ADDITION...A SOUTH-
SOUTHEAST SWELL IS EXPECTED NEXT WEEKEND FROM A LOW CURRENTLY NEAR
30S 125W. SURF HEIGHTS ALONG SOUTH FACING SHORES ARE EXPECTED TO BE
BELOW ADVISORY LEVELS...BUT THE TRANSPOSITION OF MULTIPLE SWELLS
NEXT WEEKEND COULD BRING ADVISORY LEVEL HEIGHTS. PINPOINTING SWELL
ARRIVAL TIMES AND HEIGHTS WILL BE A LITTLE MORE DIFFICULT THAN USUAL
AS BUOY 51028 LOCATED ALONG THE EQUATOR TO THE SOUTH OF THE ISLANDS
IS NOT REPORTING WAVE HEIGHT INFORMATION AT THIS TIME.

&&

.HYDROLOGY...
LOCALIZED FLOODING REMAINS POSSIBLE ON THE KONA SIDE OF THE BIG
ISLAND THROUGH EARLY THIS EVENING...AND AGAIN TOMORROW AFTERNOON AND
EVENING. ATMOSPHERE IS PRIME FOR HEAVY DOWNPOURS OF RAIN ACROSS ALL
OF THE ISLANDS EARLY THIS EVENING AND AGAIN TOMORROW AFTERNOON AND
EVENING. ALLOWED KONA/S FLOOD ADVISORY TO EXPIRE AT 3 PM...HOWEVER
THE KOHALA REGION HAS SOME SHOWERS THAT ARE HEAVY ON RADAR AND MAY
NEED AN ADVISORY SHORTLY.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

PROTON

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 heavy rain. Local standard time, as filed.

Heavy Rain, Hawaii

When: August 28, 4:39 PM HST to 7:45 PM HST
Where: Hawaii County, Waikoloa Village
Reported by: OFFICIAL NWS OBS.
Coordinates: 19.602, -155.523 (the zone’s center; the record gives no point)

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

Every storm in Hawaii in 2005 Every state in 2005 This day in weather history Warnings in Hawaii, August 2005

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 2026-09-24. Each event’s entry at NCEI: 5469488.