Heavy Rain, Hawaii
- When
- June 18, 7:49 PM HST to 9:27 PM HST
- Where
- Hawaii County, 6.36 mi SW of Kona Village Resort to 3.49 mi ESE of Captain Cook
- Reported by
- Official NWS Observations
- Coordinates
- 19.758, -156.042
Heavy Rain in Hawaii, June 18 to 21, 2014
A persistent upper trough in the vicinity of Hawaii helped destabilize the lower atmosphere over the lee side of the Big Island. Heavy rain fell over parts of Kona and South Kohala in the evening hours.
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
- 2
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.
A persistent upper trough in the vicinity of Hawaii helped destabilize the lower atmosphere over the lee side of the Big Island. Heavy rain fell over parts of Kona and South Kohala in the evening hours. The rainfall produced 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 Jun 18, 3:30 PM HST, 4 hours 19 minutes earlier.
Area forecast discussion, Jun 18, 3:30 PM HST, 4 hours 19 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 330 PM HST WED JUN 18 2014 .SYNOPSIS... TRADE WINDS WILL CONTINUE THROUGH THE FORECAST PERIOD BUT WEAKEN SLIGHTLY AFTER THURSDAY AFTERNOON. CLOUDS AND SHOWERS WILL FAVOR WINDWARD AND MAUKA AREAS...WITH A FEW SHOWERS EXPECTED TO REACH LEEWARD AREAS AS WELL FROM TIME TO TIME. && .DISCUSSION... HIGH PRESSURE REMAINS FIRMLY ENTRENCHED TO OUR NORTH AND MODELS SHOW ONLY SLIGHT VARIATIONS IN WIND SPEEDS THROUGH THE FORECAST PERIOD AS A TRADE WIND WEATHER PATTERN CONTINUES ACROSS THE MAIN HAWAIIAN ISLANDS. TRADE WINDS WILL STAY ON THE BREEZY SIDE THROUGH THURSDAY AFTERNOON...THEN DECREASE SLIGHTLY HEADING INTO THE WEEKEND. SURFACE HIGH PRESSURE WILL MEANDER FAR NORTH OF THE STATE BETWEEN 35N AND 40N THROUGH TOMORROW. THE HIGH AND ITS ASSOCIATED RIDGE WILL BE WEAKENED AND FORCED DOWN TO AROUND 30N BY FRIDAY AND SATURDAY AS A LOW PASSES BY IN THE STORM TRACK WESTERLIES TO THE NORTH OF THE RIDGE. THIS WILL CAUSE TRADES ACROSS LOCAL WATERS TO DROP A NOTCH. AFTER THIS SOUTHWARD NUDGE...THE RIDGE POSITION SHOULD CHANGE LITTLE THROUGH THE MIDDLE OF NEXT WEEK. A TRADE WIND WEATHER PATTERN WILL CONTINUE TO FOCUS CLOUDS AND SHOWERS OVER WINDWARD AND MAUKA AREAS THROUGH THE FORECAST PERIOD. AN UPPER LEVEL TROUGH EXTENDING OVER THE ISLANDS FROM THE NORTHEAST ENHANCED POCKETS OF MOISTURE MOVING WITHIN TRADE WIND FLOW THIS MORNING. HOWEVER...AFTERNOON SOUNDINGS SHOW PRECIPITABLE WATER IS RATHER LOW...1.2 INCHES OR LESS...WITH ONLY MODEST AIRMASS INSTABILITY. MODELS SHOW THE UPPER TROUGH GRADUALLY MOVING AWAY OVER THE NEXT FEW DAYS...SO ANY ASSOCIATED DESTABILIZING EFFECTS WILL MOVE AWAY WITH IT. WE EXPECT THE USUAL NIGHTTIME DIURNAL INCREASE IN TRADE WIND SHOWERS...BUT ONLY LIGHT TOTAL RAINFALL. && .AVIATION... AIRMET TANGO FOR LOW LEVEL TURB IN THE LEE ON THE MOUNTAINS REMAINS VALID...AND WILL MOST LIKELY STAY POSTED UNTIL THE BREEZY TRADES BEGIN TO SUBSIDE SLIGHTLY LATE THURSDAY INTO THE WEEKEND. DRIER AIR UPSTREAM OF THE ISLANDS WILL HELP TO KEEP SHOWER ACTIVITY LIGHTER TONIGHT AND SHOWERS WILL MAINLY FOCUS OVER WINDWARD AND MOUNTAIN AREAS. HOWEVER...SOME SHOWERS MAY HAVE ENHANCED POCKETS OF MVFR CONDITIONS...AS AN UPPER LEVEL TROUGH STILL LINGERS JUST NE OF THE ISLANDS. && .MARINE... FRESH TO LOCALLY STRONG TRADE WINDS WILL PERSIST THROUGH THURSDAY AFTERNOON. A SMALL CRAFT ADVISORY /SCA/ REMAINS IN EFFECT FOR THE TYPICALLY WINDIER WATERS AROUND MAUI AND THE BIG ISLAND. ALTHOUGH THE SCA MAY NEED TO BE EXTENDED BEYOND THURSDAY AFTERNOON...WE ARE STILL EXPECTING THE SCA TO BE DOWN HEADING INTO THE WEEKEND. NO SIGNIFICANT SWELLS ARE IN STORE DURING THE NEXT WEEK. THE BIGGEST SURF WILL BE ALONG EAST FACING SHORES DURING THE NEXT FEW DAYS... WHERE SHORT PERIOD TRADE WIND SEAS AROUND 6 TO 7 FT AT 8 SECONDS WILL COMBINE WITH A SMALL LONG PERIOD EAST SWELL TO PRODUCE ROUGH SURF IN THE HEAD HIGH RANGE. AS TRADES EASE A NOTCH...TRADE WIND SWELL WILL BE ON THE DECLINE HEADING INTO THE WEEKEND. && .HFO WATCHES/WARNINGS/ADVISORIES... SMALL CRAFT ADVISORY UNTIL 6 PM HST THURSDAY FOR MAALAEA BAY- PAILOLO CHANNEL-ALENUIHAHA CHANNEL-BIG ISLAND LEEWARD WATERS-BIG ISLAND SOUTHEAST WATERS. && DISCUSSION AND MARINE...POWELL AVIATION...EATON
The radar
The national radar mosaic for the moment the first event began.
Event by event
2 heavy rain. Local standard time, as filed.
Heavy Rain, Hawaii
- When
- June 21, 6:42 PM HST to 8:32 PM HST
- Where
- Hawaii County, 0.58 mi NNE of Kawaihae to 1.36 mi SSE of Waikoloa Village
- Reported by
- Official NWS Observations
- Coordinates
- 20.038, -155.827
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
- Flood and Hail in Texas, June 18 to 19, 2014
- Tornadoes and Hail in South Dakota, June 18, 2014
- Hail and Damaging Winds in Ohio, June 18, 2014
- Hail and Damaging Winds in Michigan, June 18, 2014
- Flash Flooding and Hail in Iowa, June 18 to 19, 2014
- Flooding in Minnesota, June 18 to 23, 2014
- Heat in Delaware, June 18 to 19, 2014
- Flash Flooding and Flooding in Iowa, June 18 to 22, 2014
- Tornado and Flooding in Pennsylvania, June 18, 2014
- Hail and Damaging Winds in Illinois, June 18 to 19, 2014
- Flash Flooding and Damaging Wind in Minnesota, June 18 to 19, 2014
- Flash Flood and Flood in Nebraska, June 18 to 19, 2014
More
Every storm in Hawaii in 2014Every state in 2014This day in weather historyWarnings in Hawaii, June 2014
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: 520322, 520324.