A surface low that developed northwest of Kauai brought unstable conditions to the state.
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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.
A surface low that developed northwest of Kauai brought unstable conditions to the state.
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 Jan 7, 8:15 PM HST, 11 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 815 PM HST SUN JAN 7 2007 .SYNOPSIS... A KONA LOW DEVELOPING NORTHWEST OF KAUAI WILL PRODUCE WET... UNSETTLED WEATHER FOR THE NEXT FEW DAYS. HEAVY RAIN WILL BE POSSIBLE IN MOST AREAS...AND SNOW WILL FALL OVER MAUNA KEA AND MAUNA LOA. && .DISCUSSION... A LINE OF THUNDERSTORMS HAVE DEVELOPED ABOUT 275 MILES NORTHWEST OF KAUAI THIS EVENING...NEAR THE TROUGH. LOW LEVEL CONVERGENCE BANDS HAVE BEGUN TO FORM NEAR THE MAIN HAWAIIAN ISLANDS. AROUND SUNSET...A THUNDERSTORM DEVELOPED JUST SOUTH OF KAUAI...BRINGING SOME HEAVY RAIN TO THE SOUTHERN COAST OF THE GARDEN ISLE. ON OAHU...THE SOUTHEASTERLY LOW LEVEL WIND FLOW IS BRINGING SHOWERS...SOME OF WHICH ARE HEAVY...TO THE EAST SIDE OF THE KOOLAU RANGE FROM WAIAHOLE TO TURTLE BAY. HAVE INCREASED POPS/SKY OVER THIS AREA TO ACCOUNT FOR THE RAIN. OTHERWISE...NOT ANTICIPATING ANY OTHER CHANGES TO THE GRIDS AT THIS TIME. PREVIOUS DISCUSSION FOLLOWS. && .PREV DISCUSSION... ISSUED AT 4 PM THE LOW LEVEL FLOW NEAR THE MAIN HAWAIIAN ISLANDS HAS VEERED TO EAST SOUTHEAST NEAR THE BIG ISLAND AND TO SOUTHEAST NEAR KAUAI. RADARS ARE SHOWING CLOUD TOPS GETTING HIGHER AROUND THE ISLANDS AND RAIN GAGES HAVE SHOWN LOCALLY HEAVY SHOWERS. THE HEAVY SHOWERS WILL BECOME MORE WIDESPREAD OVERNIGHT AS THE ATMOSPHERE BECOMES MORE UNSTABLE AND MOISTURE BECOMES DEEPER. THE GLOBAL MODELS REMAIN IN GENERAL AGREEMENT THAT A SHARP TROUGH ALOFT WILL DIG SOUTHEAST TOWARDS THE MAIN HAWAIIAN ISLANDS THIS EVENING. THEY ALL SHOW A LOW CUTTING OFF WEST NORTHWEST OF KAUAI TONIGHT AND DROPPING FURTHER SOUTH THROUGH MONDAY NIGHT. AFTER THAT...THE MODELS CONTINUE TO SHOW VERY DIFFERENT PATTERNS. WE ARE PRETTY CONFIDENT THAT WINDS OVER THE ISLANDS WILL VEER TO SOUTHEAST TONIGHT WITH A CHANCE OF HEAVY SHOWERS AND THUNDERSTORMS CONTINUING THROUGH AT LEAST TUESDAY MORNING. THE MOISTURE WILL BE DEEP ENOUGH AND TEMPERATURES WILL BE COLD ENOUGH FOR SNOW AT THE HIGHER ELEVATIONS. SOME OF THE MODELS...INCLUDING THE LATEST GFS RUN...SHOW THE ATMOSPHERE BECOMING MORE STABLE AND WINDS SHIFTING BACK TO EAST STARTING TUESDAY NIGHT. FOR NOW...WE WILL FORECAST THE WET WEATHER TO TAPER OFF BY MID-WEEK BUT SINCE CUT-OFF LOWS ARE DIFFICULT TO FORECAST...WE HAVE MUCH LESS CONFIDENCE IN WHAT WILL HAPPEN AFTER TUESDAY MORNING. && .MARINE... WINDS NEAR THE MAIN HAWAIIAN ISLANDS ARE WEAKENING AND SHIFTING TO EAST SOUTHEAST BUT WINDS REMAIN RATHER STRONG SOUTH OF THE BIG ISLAND. A FETCH OF STRONG EAST WINDS EAST OF THE ISLANDS WILL CONTINUE TO PRODUCE A SWELL AIMED TOWARD THE ISLANDS. THIS SWELL WILL PRODUCE ROUGH...LARGER THAN NORMAL SURF ON EAST-FACING SHORES THROUGH TUESDAY. AS THE KONA LOW DEVELOPS WEST OF THE ISLANDS...THE ATMOSPHERE OVER THE COASTAL AND OFFSHORE WATERS WILL BECOME UNSTABLE ENOUGH FOR THUNDERSTORMS TO FORM. THE THUNDERSTORMS MAY BECOME WIDESPREAD ENOUGH TO REQUIRE A MARINE WEATHER STATEMENT. GALE FORCE WINDS ARE LIKELY BETWEEN THE DEVELOPING KONA LOW AND A STRONG HIGH FAR TO THE NORTHEAST. IT LOOKS LIKE THE GALES WILL NOT EXTEND INTO THE OFFSHORE WATERS...BUT GIVEN THE UNCERTAINTY OF THE GLOBAL MODELS...WE WILL NEED TO WATCH FOR THAT POSSIBILITY. && .HFO WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY AFTERNOON. WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 PM HST WEDNESDAY FOR MAUNA KEA AND MAUNA LOA. HIGH SURF ADVISORY UNTIL 4 PM HST TUESDAY FOR EAST FACING SHORES OF ALL ISLANDS EXCEPT LANAI AND NIIHAU. && M BALLARD
The national radar mosaic for the moment the first event began.
6 heavy rain, 1 flash flood, 1 winter weather. Local standard time, as filed.
Heavy showers in windward sections of Oahu brought flooding conditions to the Hauula area. High water closed Kamehameha Highway near Pokiwai Place for a time. No serious injuries or property damage were reported.|
Heavy showers caused ponding on roadways, and small stream and drainage ditch flooding in the northwest part of Kauai. There were no reports of serious property damage or injuries.|
Heavy showers in windward areas of Oahu produced small stream and drainage ditch flooding, and ponding of roadways. No serious injuries or property damage were reported.
Heavy showers over western parts of Kauai caused ponding on roadways, and small stream and drainage ditch flooding. No serious property damage or injuries were reported.|
Heavy showers in the northern half of Oahu produced small stream and drainage ditch flooding, and ponding on roadways. There were no reports of serious property damage or injuries.|
Up to 3 inches of snow fell on the summit of Mauna Kea on the Big Island of Hawaii. The snow and ice on the roadway made travel to elevations above 13 thousand feet very treacherous. The astronomical obervatories on Mauna Kea could not be used for a couple of days because of heavy cloud cover. No serious injuries or property damage were reported, however.|
Heavy showers caused small stream and drainage ditch flooding, and ponding of roadways in the Puna and Kau districts on the Big Island of Hawaii. No significant injuries or property damage were reported.|
Heavy showers in northern and windward sections of Oahu caused small stream and drainage ditch flooding, and ponding of roadways. There were no reports of serious property damage or injuries.
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, January 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: 7847, 7848, 7849, 7850, 7851, 7852, 7853, 7854.