Hawaii, 2023Debris Flows and Flooding in Hawaii, November 30, 2023
November 30, 2023 · NWS HFO · 6 events in 3 counties and zones
A kona low developed west-northwest of the Hawaiian Islands and brought periods of heavy rainfall and isolated thunderstorms. Heavy rainfall lead to localized flash flooding and landslides across portions of the State.
Every event with a place to put it; 2 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
Open the live radar over this ground
- 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.
A kona low developed west-northwest of the Hawaiian Islands and brought periods of heavy rainfall and isolated thunderstorms. Heavy rainfall lead to localized flash flooding and landslides across portions of the State. Impacts from the kona low continued into December 2023 and are covered in episode 186869.
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 Nov 29, 8:51 PM HST, 6 hours 9 minutes earlier.
Area forecast discussion, Nov 29, 8:51 PM HST, 6 hours 9 minutes before
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</html>Event by event
2 debris flow, 2 high wind, 2 flood. Local standard time, as filed.
Debris Flow, Hawaii
- When
- November 30, 3:00 AM HST to 9:00 AM HST
- Where
- Hawaii County, 1.16 mi SE of Hakalau to 0.96 mi SE of Hakalau
- Cause
- Heavy Rain
- Reported by
- Law Enforcement
- Coordinates
- 19.888, -155.117
The Hawaii Police Department reported a landslide closing the Hawaii Belt Rd (Highway 19) between Mile Marker Twelve and Honomu Rd.
Debris Flow, Hawaii
- When
- November 30, 3:00 AM HST to 9:00 AM HST
- Where
- Hawaii County, 0.67 mi W of Paauilo to 1.25 mi SE of Paauilo
- Cause
- Heavy Rain
- Reported by
- Emergency Manager
- Coordinates
- 20.051, -155.380
A landslide was reported near Mile Marker 28 in Kawaili Gulch along Hawaii Belt rd. (Highway 19).
High Wind, Big Island Southeast
- When
- November 30, 3:00 PM HST to 4:00 PM HST
- Where
- Big Island Southeast forecast zone
- Measured
- 66 kt (76 mph) estimated gust
- Reported by
- Mesonet
- Coordinates
- 19.602, -155.523 (the zone’s center; the record gives no point)
Flood, Hawaii
- When
- November 30, 3:28 PM HST to 11:05 PM HST
- Where
- Hawaii County, 4.41 mi N of Pahala to 4.54 mi N of Pahala
- Cause
- Heavy Rain
- Reported by
- Law Enforcement
- Coordinates
- 19.264, -155.476
Persistent heavy rainfall lead to water accumulating on the roads which prompted the road closure of Wood Valley Road.
Flood, Maui
- When
- November 30, 4:37 PM HST to 11:59 PM HST
- Where
- Maui County, 0.13 mi W of Koali to 0.16 mi NNE of Kipahulu
- Cause
- Heavy Rain
- Reported by
- Law Enforcement
- Coordinates
- 20.680, -156.032
Periods of heavy rainfall lead to an accumulation of water on the roadways which led to the closure of Piilani highway from mile marker 29-31, as well as mile marker 16. Hana Highway was also closed near mile marker 40.
High Wind, Big Island Southeast
- When
- November 30, 5:00 PM HST to 6:00 PM HST
- Where
- Big Island Southeast forecast zone
- Measured
- 61 kt (70 mph) estimated gust
- Reported by
- Park/Forest Service
- Coordinates
- 19.602, -155.523 (the zone’s center; the record gives no point)
- Debris Flow
- A fast-moving slurry of mud, rock and debris, usually on a slope soaked by heavy rain or stripped by a fire.
- High Wind
- Sustained non-thunderstorm winds of 40 mph or more for an hour, or gusts of 58 mph or more.
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Heavy Rain in Kansas, November 30, 20231 death · 1 event
- Winter Weather in Colorado, November 30, 20237 events
- Heavy Snow in New Mexico, November 30, 20236 events
- High Wind and Strong Wind in Texas, November 30, 2023$10,000 · 51 kt wind · 3 events
- Heavy Snow in Nevada, November 30, 20233 events
- Flash Flooding in Texas, November 30, 2023$5,000 · 2 events
- Marine Thunderstorm Winds in Gulf of Mexico, November 30, 20232 events
- High Wind in Texas, November 30, 202358 kt wind · 1 event
- High Wind in New Mexico, November 30, 202355 kt wind · 1 event
- Hail in Texas, November 30, 20230.75 in hail · 1 event
- Flash Flood in Texas, November 30, 20231 event
- Flash Flood in Louisiana, November 30, 20231 event
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 2026-09-30. Each event’s entry at NCEI: 1144654, 1144655, 1144649, 1143752, 1143753, 1144650.