Heavy Rain, Hawaii
- When
- July 29, 1:26 AM HST to 7:15 AM HST
- Where
- Hawaii County, 0.74 mi W of Kukuihaele to 3.45 mi SSW of Kukuihaele
- Reported by
- Official NWS Observations
- Coordinates
- 20.119, -155.591
Heavy Rain in Hawaii, July 29, 2008
Heavy showers over the northeast part of the Big Island of Hawaii produced small stream and drainage ditch flooding, and ponding on roadways. No significant property damage or injuries were reported.
Where it happened
Every event with a place to put it. 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 over the northeast part of the Big Island of Hawaii produced small stream and drainage ditch flooding, and ponding on roadways. No significant property damage or injuries 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 Jul 28, 8:30 PM HST, 4 hours 56 minutes earlier.
Area forecast discussion, Jul 28, 8:30 PM HST, 4 hours 56 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 830 PM HST MON JUL 28 2008 .SYNOPSIS... A RATHER WET TRADE WIND PATTERN WILL CONTINUE THROUGH TUESDAY... WITH MOISTURE AND WIND SPEED EXPECTED TO DECREASE FROM WEDNESDAY ONWARD. CLOUDS AND SHOWERS WILL FAVOR WINDWARD AND MAUKA AREAS...BUT GUSTY TRADES WILL CARRY SHOWERS ACROSS LEEWARD SECTIONS OF THE SMALLER ISLANDS AT TIMES AS WELL. && .DISCUSSION... HAVE MODIFIED THE QPF FIELDS...WITH HIGHER VALUES EXPECTED TONIGHT...AND THEN A GRADUAL RETURN TO TYPICAL TRADE WIND VALUES WEDNESDAY ONWARD. THE HIGHEST VALUES WILL BE OVER THE WINDWARD AND MAUKA AREAS. STILL GREAT MODEL AGREEMENT WITH THE HIGH TO OUR NORTH BEGINNING TO MOVE TO THE WEST ON WEDNESDAY. THE RIDGE NORTH OF THE ISLANDS WILL CONTINUE TO KEEP TRADES BLOWING THROUGH THE END OF THE WEEK...BUT AS THE HIGH MOVES WEST...EXPECT WIND SPEEDS TO WEAKEN. WINDS OVER HALEAKALA ARE CURRENTLY BELOW THE 30 MPH ADVISORY CRITERIA...BUT THE MODELS SHOW THE WINDS WILL PICK UP AGAIN TONIGHT....AND PERSIST THROUGH THE DAY ON TUESDAY. HEADING INTO TUESDAY NIGHT AND THEN INTO WEDNESDAY...WE SHOULD SEE THE WINDS FALL BACK TO AROUND 20 MPH. THUS THE ADVISORY CONTINUES FOR HALEAKALA THROUGH TUESDAY AFTERNOON. THE MODELS BRING REMNANT MOISTURE FROM FORMER EAST PACIFIC TROPICAL CYCLONE GENEVIEVE TO THE BIG ISLAND BY SATURDAY NIGHT. ADDITIONALLY...THE MODELS ARE NOW SHOWING A LOW FAR NORTH OF THE ISLANDS DIGGING DOWN...WHICH WOULD FURTHER WEAKEN THE TRADE FLOW OVER THE ISLANDS. WILL BE FURTHER EXAMINING BOTH OF THESE SITUATIONS LATER TONIGHT TO DETERMINE WHAT...IF ANY...CHANGES ARE NEEDED IN THE FORECAST AT THIS POINT IN TERMS OF BOTH RAINFALL AND WINDS. && .MARINE... SMALL CRAFT ADVISORIES REMAIN IN EFFECT THROUGH TUESDAY AFTERNOON FOR ALL BUT LEEWARD WATERS AS GUSTY TRADE WINDS CONTINUE. BUOY DATA SHOWS THE SOUTHWEST SWELL HAS SUFFICIENT ENERGY TO PRODUCE ADVISORY LEVEL SURF ALONG SOUTH FACING SHORES. THE SWELL WILL PERSIS INTO WEDNESDAY...BUT SURF SHOULD DROP BELOW CRITERIA LEVELS BY NOON TUESDAY. OTHER SIGNIFICANT SWELLS ARE EXPECTED THIS WEEK. && .HFO WATCHES/WARNINGS/ADVISORIES... WIND ADVISORY THROUGH 600 PM HST TUESDAY FOR HALEAKALA SUMMIT. SMALL CRAFT ADVISORY THROUGH 600 PM HST TUESDAY FOR ALL CHANNELS AND WATERS EXCEPT FOR WATERS LEE OF KAUAI...OAHU AND MAUI COUNTY. HIGH SURF ADVISORY THROUGH NOON TUESDAY FOR SOUTH-FACING SHORES OF ALL ISLANDS. &&
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
- Flooding in Missouri, July 29 to 31, 2008
- Coastal Flood and High Surf in Alaska, July 29 to 31, 2008
- Damaging Winds in Minnesota, July 29, 2008
- Flash Flood and Hail in Mississippi, July 29, 2008
- Damaging Wind and Lightning Strike in South Carolina, July 29, 2008
- Flash Flood and Damaging Winds in Illinois, July 29, 2008
- Lightning Strike in Georgia, July 29, 2008
- Hail and Damaging Winds in Alabama, July 29, 2008
- Damaging Winds and Lightning Strike in Tennessee, July 29 to 30, 2008
- Damaging Winds in Missouri, July 29, 2008
- Flash Flooding and Hail in Missouri, July 29 to 30, 2008
- Tornadoes and Hail in Wisconsin, July 29, 2008
More
Every storm in Hawaii in 2008Every state in 2008This day in weather historyWarnings in Hawaii, July 2008
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 2026-10-01. Each event’s entry at NCEI: 113702.