Hawaii, 2008

Flash Flooding and Heavy Rain in Hawaii, February 7 to 9, 2008

February 7 to 9, 2008 · NWS HFO · 6 events in 3 counties and zones

Heavy showers and thunderstorms continued across the Aloha State as an upper trough and a moist trade flow combined to adversely affect the islands.

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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
6

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 and thunderstorms continued across the Aloha State as an upper trough and a moist trade flow combined to adversely affect the islands.

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 Feb 7, 9:15 AM HST, 4 hours 47 minutes earlier.

Area forecast discussion, Feb 7, 9:15 AM HST, 4 hours 47 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
915 AM HST THU FEB 7 2008

.SYNOPSIS...THE UPPER LEVEL TROUGH WILL CONTINUE ITS PRESENCE
AROUND THE MAIN HAWAIIAN ISLANDS THROUGH SATURDAY. EXPECT THE
THREAT OF HEAVY SHOWERS AND ISOLATED THUNDERSTORMS TO PERSIST UNTIL
SATURDAY. A MORE NORMAL TRADE WIND REGIME WILL FOLLOW FOR THE
FIRST FEW DAYS OF THE NEW WORK WEEK.

&&

.DISCUSSION...A GENERALLY WET WEATHER PATTERN REMAINS OVER THE STATE
TODAY. THE BIG ISLAND AND MAUI ARE HAVING A BIT OF A BREAK IN THE
SHOWER ACTIVITY AND CLOUDS THIS MORNING AS SOME WEAK SUBSIDENCE
ASSOCIATED WITH THE UPPER TROUGH AXIS IS OVER THE BIG ISLAND AND
MOVING SLOWLY EAST. THE MOST ACTIVE SHOWER ACTIVITY INDICATED ON
RADAR IS MOVING ACROSS EASTERN OAHU AND EXTENDING OVER THE WATERS
NORTHEAST OF OAHU THIS MORNING. THIS AREA OF SHOWERS AND COOLING
CLOUD TOPS SEEMS TO COINCIDE WITH THE NEXT SHORT WAVE IMPULSE MOVING
IN FROM THE NORTHWEST OF THE ISLANDS. WITH THIS IMPULSE PROGRESSING
SLOWLY EAST...EXPECT SHOWERS TO REDEVELOP ACROSS MAUI AND EVENTUALLY
THE BIG ISLAND AS THE DAY PROGRESSES. WITH AMPLE SUNSHINE...LIGHT
WINDS...MOISTURE AND A UNSTABLE AIRMASS...THE KONA SIDE IS RIPE FOR
SOME ISOLATED THUNDERSTORMS THIS AFTERNOON. WILL LEAVE THE FLASH
FLOOD WATCH IN PLACE FOR BIG ISLAND AND MAUI AS THE THREAT OF HEAVY
RAIN AND FLASH FLOODING REMAINS TODAY. THE BIG ISLAND SUMMITS WILL
REMAIN IN THE WINTER WEATHER ADVISORY ALSO AS TEMPERATURES REMAIN
BELOW FREEZING AND ANY CONVECTION TODAY WILL BRING POSSIBLE SNOW
ACCUMULATION ABOVE 12000 FEET.

FOR THE WEEKEND FORECAST...AM INCLINED TO GO ALONG WITH TODAYS 12Z
GFS WHICH INDICATES THAT THE ABNORMALLY WET PATTERN WILL CONTINUE
FRIDAY AND SATURDAY...ESPECIALLY WINDWARD LOCATIONS AS LIGHT TO
MODERATE TRADES AND A WEAK UPPER TROUGH PERSISTS ACROSS THE STATE. A
WEAK UPPER RIDGE AXIS BUILDS ALONG 23N-25N EARLY NEXT WEEK...CLOSE
ENOUGH TO THE ISLANDS TO PUT A DAMPER ON THE HEAVIER SHOWER ACTIVITY
AND BRING MORE TYPICAL TRADE WEATHER.

WILL HAVE TO WATCH FOR THE POTENTIAL FOR A RETURN OF THE DEEPER
MOISTURE FROM THE SOUTHEAST ON TUESDAY AND BEYOND AS THE HIGH MOVES
FURTHER TO THE EAST AND THE TRADES BECOME MORE SOUTHEASTERLY.

&&

.MARINE...THE LATEST SURF OBSERVATIONS AND BUOY DATA FROM WAIMEA
BUOY INDICATE THAT SURF HEIGHTS ARE AT ADVISORY LEVEL THIS MORNING.
THE HIGH SURF ADVISORY IS GOOD UNTIL 6 AM SATURDAY.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL 6 PM HST TODAY FOR MAUI AND THE BIG ISLAND.

WINTER WEATHER ADVISORY UNTIL 6 PM HST THIS AFTERNOON FOR BIG ISLAND
SUMMITS.

HIGH SURF ADVISORY UNTIL 6AM SATURDAY FOR NORTH AND WEST SHORES OF
NIIHAU KAUAI AND OAHU...AND NORTH FACING SHORES OF MOLOKAI AND
MAUI.

&&

BRENCHLEY

The radar

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

Open the radar archive at this moment

Event by event

4 heavy rain, 2 flash flood. Local standard time, as filed.

Flash Flood, Honolulu

When
February 7, 2:02 PM HST to 3:31 PM HST
Where
Honolulu County, 1.48 mi ESE of Makakilo City to 1.6 mi ESE of Makakilo City
Cause
Heavy Rain
Reported by
Newspaper
Coordinates
21.345, -158.078

After heavy rain, flood waters became 3 to 4 feet deep on westbound lanes of the H-1 Freeway near Makakilo in leeward Oahu.

Heavy Rain, Honolulu

When
February 7, 5:40 PM HST to 7:38 PM HST
Where
Honolulu County, 0.54 mi SSW of Whitmore Village to 2.12 mi SSE of Kamiloiki
Reported by
Official NWS Observations
Coordinates
21.512, -158.032

Heavy Rain, Hawaii

When
February 7, 6:10 PM HST to 10:55 PM HST
Where
Hawaii County, 0.75 mi WSW of Hakalau to 3.52 mi SE of Pahoa
Reported by
Official NWS Observations
Coordinates
19.896, -155.141

Flash Flood, Maui

When
February 7, 7:02 PM HST to 8:33 PM HST
Where
Maui County, 0.3 mi SE of Kamalo to 0.43 mi ESE of Kamalo
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
21.047, -156.877

Flood waters closed a portion of Kamehameha V Highway near Kamalo on the island of Molokai.

Heavy Rain, Hawaii

When
February 8, 3:32 PM HST to 7:07 PM HST
Where
Hawaii County, 4.9 mi NNW of Kailua Kona to 1.1 mi SE of Kealakekua
Reported by
Official NWS Observations
Coordinates
19.700, -155.995

Heavy Rain, Hawaii

When
February 9, 2:39 AM HST to 5:32 AM HST
Where
Hawaii County, 1.15 mi ESE of Paauhau to 4.23 mi SSW of Naalehu
Reported by
Official NWS Observations
Coordinates
20.077, -155.413

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
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 2008Every state in 2008This day in weather historyWarnings in Hawaii, February 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 2026-09-24. Each event’s entry at NCEI: 76656, 76657, 76659, 76658, 76661, 77341.