Heavy Rain, Maui
- When
- February 22, 5:19 AM HST to 7:39 AM HST
- Where
- Maui County, Hana
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 20.868, -156.617 (the zone’s center; the record gives no point)
Heavy Rain in Hawaii, February 22, 2006
Heavy showers and isolated thunderstorms over the southern half of Maui caused small stream and drainage ditch flooding, and ponding on roadways. There were no reports of serious injuries or property damage.
Where it happened
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 and isolated thunderstorms over the southern half of Maui caused small stream and drainage ditch flooding, and ponding on roadways. There were no reports of serious injuries or property damage.
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 22, 4:00 AM HST, 1 hour 19 minutes earlier.
Area forecast discussion, Feb 22, 4:00 AM HST, 1 hour 19 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 400 AM HST WED FEB 22 2006 .SYNOPSIS... EXPECT RAIN AND THUNDERSTORMS TO DECREASE THIS MORNING OVER THE SMALLER ISLANDS. LIGHT TRADES WILL RETURN FOR A DAY OR TWO...WHICH WILL BRING SHOWERS MAINLY TO WINDWARD AND MAUKA AREAS OF ALL THE ISLANDS. ANOTHER UPPER LEVEL SYSTEM THIS UPCOMING WEEKEND COULD BRING ANOTHER ROUND OF RAIN. && .DISCUSSION... HIGH CLOUDS ARE CLEARING THE MAIN HAWAIIAN ISLANDS FROM THE EAST... AND EXPECT THIS TREND TO CONTINUE TODAY AS THE UPPER LEVEL WIND FLOW BECOMES WEST TO EAST OVER THE ISLANDS. THE OVERNIGHT HOURS BROUGHT SEVERAL BATCHES OF RAIN TO OAHU. THE HIGHEST 24 HOUR RAINFALL TOTAL ON OAHU FROM 2 AM YESTERDAY UNTIL 2 AM THIS MORNING WAS THE NUUANU UPPER GAGE WHICH REPORTED 4.98 INCHES. DURING THE OVERNIGHT HOURS FROM 8 PM UNTIL 2 AM...1.42 INCHES WAS REPORTED AT THAT LOCATION...THE MOST PICKED UP BY ANY OAHU GAGE AT THAT TIME. THESE NUMBERS PALE IN COMPARISON TO THE 24 HOUR TOTAL AT THE MOUNT WAIALEALE GAGE ON KAUAI...WHICH REPORTED 7.44 INCHES. JUST OVER 7 INCHES...7.10...OF THAT FELL BETWEEN 2 AM AND 2 PM TUESDAY. NOT TO BE OUTDONE...THE OHEO GULCH GAGE ON MAUI PICKED UP 5.68 INCHES BETWEEN 8 PM AND 2 AM. WHILE RADAR STILL INDICATES RAIN MOVING DOWN THE ISLAND CHAIN...THE RAIN IS MOVING...AND NOT ANCHORING ITSELF...OR TRAINING OVER ANY ONE PARTICULAR AREA. THIS IS HELPING TO AVOID SOME OF THE FLOODING PROBLEMS WE SAW EARLIER. WILL BE LEAVING THE MENTION OF ISOLATED THUNDERSTORMS IN THE FORECAST FOR THIS MORNING...BUT ANTICIPATE FEW THUNDERSTORMS...AND FOR THEM TO BECOME LESS FREQUENT THROUGHOUT THE MORNING HOURS. THE MODELS ARE IN FAIRLY GOOD AGREEMENT WITH THE WEATHER PATTERN FOR THE NEXT 12 TO 24 HOURS. THE MODELS ARE PICKING UP ON THE UPPER LEVEL LOW TO THE NORTHEAST OF THE ISLANDS...AND LIFTING IT TO THE NORTH. THERE IS SOME DISAGREEMENT AS TO THE PLACEMENT OF THE UPPER LEVEL TROUGH DEVELOPING FROM THIS SYSTEM...BUT THE CONSENSUS IS TO KEEP THE TROUGH EAST OF THE MAIN HAWAIIAN ISLANDS. A SURFACE LOW IS FORECAST TO DEVELOP WITH THIS SYSTEM...BUT AGAIN IS EXPECTED TO STAY TO THE EAST OF THE ISLANDS. HOWEVER...THE PRESENCE OF THIS SYSTEM COULD HELP TO BRING MORE MOISTURE UP FROM THE TROPICS...AND IT COULD BE CARRIED IN ON THE TRADE WIND FLOW. ANOTHER MID TO UPPER LOW IS TO THE NORTHWEST OF THE ISLANDS...AND AGAIN THE MODELS AGREE WITH THE PLACEMENT FOR THE NEXT 12 HOURS OR SO. BEYOND THAT...THERE IS DISAGREEMENT AS TO THE PLACEMENT AND STRENGTH OF THE LOW. THE MODELS DEVELOP ANOTHER MID TO UPPER LOW DEVELOPING WEST OF THIS SYSTEM ON THURSDAY...WITH THE TWO SYSTEMS MERGING LATE THURSDAY. THE PLACEMENT OF THIS LOW WILL DETERMINE WHEN AND WHERE HIGH CLOUDS MOVE OVER THE STATE LATER THIS WEEK. THE PLACEMENT OF BOTH UPPER LOWS WILL HAVE A BIG IMPACT ON THE AMOUNT OF RAIN BROUGHT TO THE AREA LATER THIS WEEK. THE MODELS ARE IN GOOD AGREEMENT WITH A STRONG UPPER LEVEL LOW DEVELOPING NORTH OF 40N THIS WEEKEND...WITH AN UPPER LEVEL TROUGH DIGGING IN TOWARDS THE ISLANDS. IF THIS CONTINUES TO PAN OUT...WE COULD SEE SOME MORE RAIN FOR THE UPCOMING WEEKEND. && .HFO WATCHES/WARNINGS/ADVISORIES... NONE. && M BALLARD
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
More
Every storm in Hawaii in 2006Every state in 2006This day in weather historyWarnings in Hawaii, February 2006
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: 5493106.