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    May 2018
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UPDATE: Flood Warning Extended for Big Island

UPDATE: 7:23 p.m.

Special Weather Statement:

The National Weather Service in Honolulu states that a strong thunderstorm will affect Hawai‘i.

At 7:20 p.m., a strong thunderstorm was located over Kukuihaele, moving northeast at five to 10 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include Kapa‘au, Honoka‘a, Pa‘auilo, Waipi‘o Valley, Kukuihaele, Hawi, Kamuela, Poloūu Valley, ‘O‘ōkala, Kohala Ranch, Hala‘ula, Waimanu Valley, Kawaihae and Māhukona.

Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle.

UPDATE: 7:15 p.m.

The National Weather Services is extending the Flash Flood Warning for the island of Hawai‘i in Hawai‘i County until 10 p.m.

At 7:06 p.m., radar indicated heavy rain along the windward slopes of the Kohala Mountains. The most intense rainfall was from Waipi‘o Valley to Honoka‘a with rates of around 4 inches per hour.

Heavy rainfall may continue along the Hāmākua Coast for several hours.

Locations in the warning include but are not limited to Pololū Valley, Waipi‘o Valley, Kukuihaele, Kohala Ranch, Hawi, Hala‘ula, Kamuela, Kapa‘au, Waimanu Valley and Honoka‘a.

A flash flood warning means that flooding is imminent or occurring in streams, roads, and low lying areas. Move to higher ground now.

Do not cross fast flowing water in your vehicle, or on foot. Turn around, don’t drown.

This warning may need to be extended beyond 10 p.m. if heavy rain persists.

This flash flood warning replaces the previously issued flood advisory that was in effect for portions of the island of Hawai‘i in Hawai‘i County.

UPDATE: 6:00 p.m.

The National Weather Service in Honolulu has issued a Severe Thunderstorm Warning for the island of Hawai‘i in Hawai‘i County until 6:30 p.m.

At 5:57 p.m., a severe thunderstorm was located nine miles south of Pu‘uanahulu, moving northeast at 30 mph.

Radar indicated gusts up to 60 mph. Expect damage to roofs, siding and trees.

Locations impacted include Kailua-Kona, Kealakekua, Honalo, Pōhakuloa Camp, Pu‘uanahulu,
Kalaoa, Hōnaunau, Pōhakuloa Training Area, Kainaliu, Hōlualoa, Kahalu‘u-Keauhou and Captain Cook.

For your protection move to an interior room on the lowest floor of a building. Stay away from windows.

Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.

Due to the Severe Thunderstorm Warning, the following advisories are issued:

  • High winds are expected; take necessary precautions.
  • Be aware of lightning; the best place to be is indoors.
  • Expect possible interruptions in your utility services.
  • Be on the alert for malfunctioning traffic signals. Please treat flashing traffic lights as a four-way stop.

UPDATE: 5:10 p.m.

The National Weather Service in Honolulu has issued a Severe Thunderstorm Warning for The island of Hawai‘i in Hawai‘i County until 6 p.m.

At 5:01 p.m., severe thunderstorms were located along a line extending from 24 miles northwest of Kona International Airport to nine miles northwest of Miloli‘i, moving northeast at 25 mph.

Radar indicated 60 mph wind gusts and residents can expect damage to roofs, siding and trees.

Locations impacted include: Kailua-Kona, Captain Cook, Pu‘uanahulu, Hōnaunau, Kawaihae, Kahalu‘u-Keauhou, Kainaliu, Waikoloa Village, Kealakekua, Honalo, Kohala Ranch and Kalaoa.

UPDATE: 2:32 p.m.

The National Weather Service has issued a Flood Advisory for the Island of Hawai‘i through this evening.

Heaviest rains were currently over the Saddle area and Hāmākua Districts.

Heavy showers and lightning are forecast through Monday.

Take necessary precautions when in these conditions.

UPDATE: 1:51 p.m.

A Flood Advisory for the island of Hawai‘i in Hawai‘i County is in effect until 4:45 p.m.

At 1:46 p.m., radar indicated heavy rain continuing over the Big Island.

The heaviest rain is now falling over the Saddle area and the Hāmākua District, with rainfall rates up to three inches per hour.

Locations in the advisory include but are not limited to Hilo, Na‘alehu, Pa‘auilo, Waipio Valley, Orchidland Estates, Kukuihaele, Hawi, Pepe‘ekeo, Kea‘au, Kamuela, Honoka‘a and O‘okala.

Stay away from streams, drainage ditches and low lying areas prone to flooding.

Rainfall and runoff will also cause hazardous driving conditions due to ponding, reduced visibility and poor braking action.

Do not cross fast flowing or rising water in your vehicle, or on
foot. Turn around, don’t drown.

This advisory may need to be extended beyond 4:45 p.m. if heavy rain persists.

This advisory replaces the previously issued advisory that was in effect for portions of Hawai‘i County.

A Flash Flood Watch remains in effect.

ORIGINAL POST

The National Weather Service announces a Flood Advisory for the island of Hawai‘i in Hawai‘i County until 3:30 p.m.

At 12:23 p.m., radar indicated heavy showers and thunderstorms moving over the Big Island from the southeast, affecting portions of the Ka‘ū, Puna and South Hilo districts. Rain was falling at a rate of two to three inches per hour.

Locations in the advisory include but are not limited to Hilo, Hawaiian Acres, Na‘alehu, Orchidlands Estates, Glenwood, Hakalau, Pepe‘ekeo, Kea‘au, Hawai‘i Volcanoes National Park, Volcano, Pahala and Wood Valley.

Stay away from streams, drainage ditches and low-lying areas prone to flooding.

Rainfall and runoff will also cause hazardous driving conditions due to ponding, reduced visibility and poor braking action.

Do not cross fast flowing or rising water in your vehicle, or on foot. Turn around, don’t drown.

This advisory may need to be extended beyond 3:30 p.m. if heavy rain persists.

A Flash Flood Watch is also in effect.

Flash Flood Watch for All Hawai‘i Islands

The National Weather Service has issued a Flash Flood Watch for all islands through Monday afternoon.

A strong upper level trough approaching from the northwest will provide increasingly unstable conditions across the state today through Monday. This will combine with moisture pooled around a weak surface trough drifting westward from near O‘ahu to produce the threat of heavy, flooding rainfall and thunderstorms. Heavy showers and thunderstorms have already occurred across the eastern and central parts of the state, and the threat of heavy, flooding rainfall and thunderstorms will spread westward to Kaua‘i later today.

Abundant low level moisture over the eastern and central parts of the state will spread westward to Kaua‘i today. A strong upper level trough approaching the state will produce unstable conditions that will generate heavy showers and thunderstorms.

Due to increasing instability, heavy showers and thunderstorms could develop rapidly. Heavy rainfall could affect urban and leeward areas, which are more susceptible to flooding problems.

A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a dangerous situation. Please monitor forecasts and be prepared to take action should Flash Flood Warnings be issued.

Big Island Flash Flood Watch Tonight Through Thursday

Waimanu trail closed, camping permits canceled due to Big Island flash flood watch tonight through Thursday

The Department of Land and Natural Resources (DLNR), in cooperation with Hawaii County Civil Defense, is canceling all camping permits for, and closing the Waimanu trail in north Kohala today, until further notice, due to a flash flood watch for the Big Island for late tonight through Thursday afternoon.

DLNR

With long sustained rains stream levels are likely to rise, which is a safety hazard for hikers crossing streams. Do not attempt to cross a flooded stream. Remain on higher ground and wait for the stream to subside.

“We are cancelling all camping permits and the remote Waimanu trail until further notice until the trail can be inspected and deemed safe for public use,” said Roger Imoto, Division of Forestry and Wildlife administrator.

 

Hawaii County Civil Defense Issues Flash Flood Watch for Big Island

Hawaii County Civil Defense Message:

This is a weather update for Thursday afternoon, November 18 at 4:15

The National Weather Service has issued a flash flood watch for Hawai’i Island effective tonight Thursday evening November 18 through Friday November 19.

A flash flood watch means that weather conditions may develop that leads to flash flooding.

Due to the flash flood watch the following are issued.

There is a possibility of heavy rain. All residents in flood prone areas are asked to be on the alert and prepare for possible flooding conditions.

All motorists are asked to drive with caution and be on the alert for debris, runoff and ponding of water. Be aware that road closures and slowdowns can occur without any warning.

Again, the National Weather Service has issued a flash flood watch for Hawai’i Island effective tonight through tomorrow. Heavy rains are possible for this period.

Hawaii County Civil Defense Message – Flash Flood Watch Remains in Effect

This is a Civil Defense message:

This is a weather update for Friday morning November 13.

A flash flood watch remains in effect for Hawai’i County. A flash flood watch means that conditions exist that can lead to flooding.

The National Weather Service forecasts intermittent heavy rains to continue until this evening.

All major highways are open at this time with the exception of Bayfront Highway in Hilo which is closed due to high surf.

Again, a flash flood watch remains in effect for Hawai’i County until this evening.

The National Weather Service forecasts intermittent heavy rain until this evening.

Thank you for listening. Have a safe day.

This is your Hawai’i County Civil Defense.