Hawaii, 2019

Heavy Rain in Hawaii, July 8 to 11, 2019

July 8 to 11, 2019 · NWS HFO · 6 events in 2 counties and zones

Moisture associated with former tropical cyclone Barbara helped trigger heavy showers across parts of the Big Island, Maui, and Lanai. The rain caused ponding on roadways, and small stream and drainage ditch flooding.

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

Open the live radar over this ground

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.

Moisture associated with former tropical cyclone Barbara helped trigger heavy showers across parts of the Big Island, Maui, and Lanai. The rain caused ponding on roadways, and small stream and drainage ditch flooding. No serious property damage or injuries were reported.

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 Jul 8, 11:30 AM HST, 10 hours 45 minutes earlier.

Area forecast discussion, Jul 8, 11:30 AM HST, 10 hours 45 minutes before
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The radar

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

Open the radar archive at this moment

Event by event

6 heavy rain. Local standard time, as filed.

Heavy Rain, Hawaii

When
July 8, 10:15 PM HST to July 9, 1:07 AM HST
Where
Hawaii County, 4.42 mi NW of Glenwood to 5.27 mi SW of Naalehu
Reported by
Official NWS Observations
Coordinates
19.530, -155.192

Heavy Rain, Maui

When
July 9, 12:43 PM HST to 3:25 PM HST
Where
Maui County, 5.81 mi W of Shipwreck Beach to 2.77 mi NE of Manele Harbor
Reported by
Official NWS Observations
Coordinates
20.916, -157.010

Heavy Rain, Hawaii

When
July 9, 2:01 PM HST to 4:50 PM HST
Where
Hawaii County, 3.21 mi SE of Kamuela to 7.95 mi SSW of Waikii
Reported by
Official NWS Observations
Coordinates
19.997, -155.635

Heavy Rain, Maui

When
July 9, 2:46 PM HST to 4:33 PM HST
Where
Maui County, 2.57 mi S of Pulehu to 2.14 mi S of Makena
Reported by
Official NWS Observations
Coordinates
20.743, -156.336

Heavy Rain, Hawaii

When
July 10, 4:58 PM HST to 9:25 PM HST
Where
Hawaii County, 5.6 mi S of Hawi to 15.21 mi E of Honaunau National Pk
Reported by
Official NWS Observations
Coordinates
20.149, -155.820

Heavy rain, estimated at 2 to 3 inches, produced about 1 foot of water flowing across State Route 270 near mile marker 10 around 7:45 PM on the 10th. The highway, however, remained open and no damage or injuries were reported.

Heavy Rain, Hawaii

When
July 11, 3:22 PM HST to 5:26 PM HST
Where
Hawaii County, 3.17 mi E of Holualoa to 3.56 mi NNE of Waikoloa Village
Reported by
Official NWS Observations
Coordinates
19.613, -155.902

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 2019Every state in 2019This day in weather historyWarnings in Hawaii, July 2019

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 2026-10-01. Each event’s entry at NCEI: 830075, 830076, 830077, 830078, 830079, 830083.