An upper low over the Hawaiian Islands induced showers and isolated thunderstorms toward the end of the month.
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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.
The episode as NWS HFO wrote it up.
An upper low over the Hawaiian Islands induced showers and isolated thunderstorms toward the end of the month.
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 23, 10:00 AM HST, 1 hour 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 1000 AM HST FRI FEB 23 2007 .SYNOPSIS...WET TRADES WILL CONTINUE THROUGH THE WEEKEND AND INTO NEXT WEEK...THOUGH WIND SPEEDS MAY FLUCTUATE A BIT. THE HEAVIEST SHOWERS ARE LIKELY IN THE UNSTABLE AIRMASS PREVAILING FROM THIS EVENING THROUGH SUNDAY. && .DISCUSSION...WATER VAPOR IMAGES SHOWED A BAGGY AND SHALLOW UPPER LOW OVER THE MAIN HAWAIIAN ISLANDS WITHIN A LARGER UPPER RIDGE. ALTHOUGH THE LOW DID NOT APPEAR TO BE PARTICULARLY IMPRESSIVE DYNAMICALLY...TEMPERATURES AT 500 MILLIBARS IN THE RANGE OF -12 TO -15 CELSIUS NO DOUBT CONTRIBUTED TO THE DEVELOPMENT OF SHOWERS BLOWING IN ON THE TRADES. SIMILARLY...AN AREA OF LOW-LEVEL VORTICITY APPROACHING THE ARCHIPELAGO FROM THE EAST PROBABLY WILL ENHANCE SHOWERS NOT ONLY WITHIN IMMEDIATE REACH OF ITS CLOUDS...BUT ALSO ACROSS MOST WINDWARD AREAS OF THE STATE. SLIGHTLY WEAKER TRADES PERMITTED THE SHOWERS TO LINGER RATHER LONGER THAN THEY DID YESTERDAY...RESULTING IN A LESS UNIFORM DISTRIBUTION OF RAINFALL... WITH FEWER GAUGES REPORTING GENERALLY LARGER AMOUNTS OVER THE PAST SIX HOURS. OVERALL...ACCUMULATION WAS HIGHEST ON THE BIG ISLAND... FOLLOWED BY KAUAI...AND THEN THE OTHER ISLANDS. MOST REPORTS OF RAINFALL WERE LIMITED TO WINDWARD AREAS. WHILE THEY WERE NO LONGER AS GUSTY AS EARLIER IN THE WEEK...MODERATE TRADES PERSISTED. GUIDANCE SUGGESTS THAT THE LOW OVERHEAD WILL EXPAND GRADUALLY AS IT BECOMES MORE SHALLOW OVER THE NEXT TWO TO THREE DAYS...EFFECTIVELY RESULTING IN LITTLE CHANGE. THE COLD AIR ALOFT MAY PERMIT THUNDERSTORMS OVER THIS WEEKEND...BUT SHEAR BETWEEN THE TRADES AND UPPER-LEVEL WIND PROBABLY WILL PROVE TOO STRONG...SO THIS POSSIBILITY REMAINS OUT OF THE OFFICIAL FORECAST. ON THE OTHER HAND...ATMOSPHERIC MOISTURE BANKING UP ALONG AND OVER THE BIG ISLAND SUMMITS...TOGETHER WITH THE VERY COLD TEMPERATURES ALOFT...MAY DEPOSIT SOME FREEZING RAIN OR RIME AT HIGH ELEVATIONS AGAIN TONIGHT AND INTO SATURDAY MORNING. THE COLD AIR WILL MODERATE THROUGH NEXT WEEK...EVENTUALLY REDUCING ITS EFFECT ON THE ISLANDS. A DEEPER UPPER LOW APPROACHING THE AREA FROM THE NORTHWEST OVER THE WEEKEND IS NOT EXPECTED TO REACH FAR ENOUGH SOUTHEAST TO AFFECT THE STATE MUCH. THE SURFACE RIDGE TO THE NORTHEAST OF THE ISLANDS WILL PERSIST THROUGH MOST OF THE FORECAST PERIOD...THEN RECEDE A BIT BY THE END OF NEXT WEEK. THUS...THE TRADES WILL CHANGE LITTLE AT LEAST THROUGH NEXT THURSDAY. && .MARINE...NO SIGNIFICANT SWELLS ARE EXPECTED DURING THE NEXT SEVERAL DAYS. QUIKSCAT SATELLITE WIND DATA AND SURFACE OBSERVATIONS INDICATED TRADE WINDS NEAR 25 KT IN THE CHANNELS AND SOUTH OF THE BIG ISLAND...REQUIRING A SMALL CRAFT ADVISORY FOR THOSE AREAS. && .HFO WATCHES/WARNINGS/ADVISORIES... SMALL CRAFT ADVISORY THROUGH 6 PM HST SATURDAY FOR THE KAUAI... KAIWI...PAILOLO...AND ALENUIHAHA CHANNELS...AND WATERS SOUTHEAST OF THE BIG ISLAND. && RYSHKO
The national radar mosaic for the moment the first event began.
3 heavy rain, 1 flash flood. Local standard time, as filed.
Heavy showers over northern and eastern parts of Kauai produced small stream and drainage ditch flooding, and ponding on roadways. No serious property damage or injuries were reported.|
Heavy showers in leeward sections of Oahu caused ponding of roadways, and small stream and drainage ditch flooding. There were no reports of serious injuries or property damage.|
Heavy rain caused the Hanalei River to overflow and flood the roadway across the Hanalei Bridge. That portion of Kuhio Highway was closed until the water subsided. There were no reports of significant property damage or injuries.|
Heavy showers and isolated thunderstorms produced small stream and drainage ditch flooding, and ponding on roadways in the southeast section of Oahu. No serious injuries or property damage were reported.|
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Hawaii in 2007Every state in 2007This day in weather historyWarnings in Hawaii, February 2007
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: 12521, 12522, 12523, 12524.