WEATHER BLOG: Flash Flood Watch cancelled - wave3.com-Louisville News, Weather & Sports

WEATHER BLOG: Flash Flood Watch cancelled

Posted: Updated:

 

 

UPDATE 7:10 p.m. SUNDAY:

The flood advisory for the Big Island has been cancelled.

 

UPDATE 6:10 p.m. SUNDAY:

The flood advisory for Oahu will be allowed to expire at 6:15 p.m.

 

UPDATE 6:07 p.m. SUNDAY:

A Flood Advisory for the Big Island of Hawaii has been extended until 7:15 p.m.

The National Weather Service in Honolulu said at 5:54 p.m., radar showed heavy rain near Milolii, or about 29 miles south of Kailua-Kona. The area of heavy rain was nearly stationary.

Other locations in the advisory include but are not limited to locations between Milolii and Captain Cook. Persons in the advisory area should stay away from streams, drainage ditches and low-lying areas prone to flooding. Rainfall and runoff will cause hazardous driving conditions due to reduced visibility, ponding on roadways and poor braking.

 

UPDATE: 5:40 p.m.

The National Weather Service has cancelled the Flash Flood Watch.

The trough responsible for the threat of thunderstorms is lifting off to the northwest and allowing a more stable atmosphere to settle in. There may still be some isolated heavy showers this evening, but no significant flooding is expected.

Flood Advisories are still in effect for Oahu and the Big Island until 6:15 p.m.

 

UPDATE 5:15 p.m. SUNDAY:

The National Weather Service has extended a Flood Advisory for the island of Oahu until 6:15 p.m.

At 4:57 p.m., radar showed that most of the heavy rain on Oahu was diminishing, but showers and ponded water were still being reported on roadways in Honolulu, mainly in the Kalihi and Iwilei areas. 

Stream levels remain elevated, so the flood advisory was extended until flooding and stream levels subside.

The advisory is primarily in effect for southern and southwest Oahu, where runoff from heavy rain remains high. 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.

 

UPDATE 3:41 p.m. SUNDAY:

The National Weather Service in Honolulu has issued a Flood Advisory for the Big Island of Hawaii until 6:15 p.m.

At 3:10 p.m., radar showed heavy showers and thunderstorms over leeward and interior portions of the Big Island, with the heaviest rain over the Kona slopes and coast from Kailua-Kona town south to Hawaiian Ocean View Estates. The heavy showers were moving southwest near 10 miles per hour.

Other locations in the advisory area include but are not limited to Keauhou, Kealakekua, Holualoa and Captain Cook.

Persons in those areas should stay away from streams, drainage ditches and low-lying areas that are prone to flooding. The rainfall and runoff will also cause hazardous driving conditions due to ponding on roadways, reduced visibility and poor braking.

The advisory may be extended if heavy rain persists.

 

UPDATE 3:30 p.m. SUNDAY:

At 3:17 p.m., radar showed that heavy rain over southeast Oahu had diminished, but new areas of heavy rain were developing over the island. Heaviest rain areas were impacting the leeward coast from Makua to Makaha, and over the windward slopes of the Waianae Mountains. Additional heavy showers were near the Kalihi and Fort Shafter area.

The Flood Advisory remains in effect for the entire island of Oahu until 5:15 p.m.

 

UPDATE 2:13 p.m. SUNDAY

The National Weather Service has extended a Flood Advisory for the entire island of Oahu until 5:15 p.m.

At 1:55 p.m., radar showed heavy rain developing over southeast Oahu, upslope from both Manoa and Maunawili. Rain also was developing over the west side between Makaha and Makua. Meanwhile, radar also showed moderate rain still falling over Central Oahu near Wahiawa and Mililani, as well as along the North Shore between Kahuku and Sunset Beach.

The advisory covers the entire island of Oahu, as stream levels are likely to rise island-wide. There will also be significant ponding of water in many areas, including the Pali Highway.

Hikers should also remain clear of all streams due to the possibility of rapid rises in water levels.

UPDATE 1:20 p.m. SUNDAY

Heavy rains have diminished over Windward Oahu, but runoff and ponding of water continued in the area.

At 12:30 p.m., radar showed that the heavy showers were slamming the central, northern and northwestern areas of Oahu, north of a line from Kaena Point to Mililani to Wahiawa to Sunset Beach.

Forecasters said hikers should remain away from all streams anywhere on Oahu, as rapid rises in water are possible, even away from the heavy rain.

 

UPDATE 11:30 a.m. SUNDAY

A Flood Advisory remains in effect until 2:15 pm for Oahu.

At 11:45 am, a rain Gage in Ahuimanu showed rain falling at a rate of 3 to 4 inches per hour. Additional Heavy showers are developing over the island of Oahu, and moving very slowly toward the northeast.

The heaviest rain is currently over Windward Oahu from Kaneohe to Hauula, over Central Oahu between Mililani Mauka and Whitmore, and over the Waianae slopes west of Wheeler Army Air Field.

Stream levels on Oahu will respond by rising rapidly, and hikers should remain clear of all streams.

This advisory may need to be extended beyond 2:15 pm, or upgraded to a warning, if Heavy Rain persists.

UPDATE 7:30 a.m. SUNDAY

A Flash Flood Watch remains in effect until 6 p.m. A trough aloft will keep conditions unstable with a slight chance of heavy showers and thunderstorms.

Light south-southeast winds will keep conditions very muggy, with volcanic haze spreading from the Big Island to the rest of the state.

At this time, there are no advisories or warnings.

 

UPDATE 12:10 a.m. SUNDAY

A FLASH FLOOD WARNING has been issued for portions of the island of Maui.

The National Weather Service in Honolulu said at 11:42 p.m., radar showed a nearly stationary area of heavy rain near Kipahulu and Hamoa.

Other locations in the warning include but are not limited to Wailua Stream.

A warning means that flooding is imminent or already occurring in streams and low-lying areas. Move to higher ground now.

The Flash Flood Warning replaces the Flood Advisory that was in effect earlier.

 

UPDATE 12:02 a.m. SUNDAY:

The National Weather Service in Honolulu has issued a Flood Advisory for parts of the Big Island of Hawaii until 2:15 a.m. Sunday.

Forecasters said at 11:06 p.m., radar showed an area of heavy showers near Pahoa. The heavy rain was nearly stationary.

Other locations in the advisory area include but are not limited to Mountain View, Keaau, Kapoho, Hawaiian Paradise Park, Hawaiian Beaches and Glenwood.

Persons in the affected area should avoid streams, drainage ditches and low-lying areas that are prone to flooding. Rainfall and runoff will also cause hazardous driving conditions due to reduced visibility, ponding and poor braking.

Meanwhile, the Flash Flood Watch for all Hawaiian islands remains in effect through 6 p.m. Sunday.

 

UPDATE: 6:55 p.m. SATURDAY:

The National Weather Service in Honolulu has issued a Flood Advisory for the island of Hawaii in Hawaii County.

  • Until 9:45 pm Hst.
  • At 6:35 pm Hst, radar showed heavy rain near Kawa flats and Hawaiian Ocean estates. The area of heavy rain was moving slowly west toward Milolii.
  • The area of heavy rain is upslope of Naalehu and Punaluu beach. A Flash Flood Watch is also in effect through Sunday afternoon. This advisory may need to be extended beyond 9:45 pm Hst if Heavy Rain persists.

UPDATE: 3:35 p.m. SATURDAY:

Forecasters at the National Weather Service have extended a Flood Advisory for parts of the Big Island of Hawaii.

At 3:18 p.m., radar showed heavy rain continuing over the slopes of the Big Island. Heavy rainfall has shifted to the south and west slopes with the highest rain rates of one to two inches per hour between Kainaliu and Kailua-Kona. 

Heavy rain was also reported over the slopes of Mauna Loa between Pahala and Naalehu. Earlier rainfall near Hilo has dissipated.

Other locations in the advisory include but are not limited to Volcano, Mountain View, Glenwood, Kealakekua and Honaunau.

 

UPDATE: 1 p.m. SATURDAY:

The National Weather Service has issued a Flood Advisory for parts of the Big Island of Hawaii until 3:45 p.m.

The weather service said that at 12:42 p.m., radar showed heavy rain upslope of Hilo town. The area of heavy rain was stationary and increasing.

Other locations in the advisory include but are not limited to Hawi, Waipio Valley, Honokaa, Hilo, Mountain View and Volcano.

Persons in the advisory area should stay away from streams, drainage ditches and low-lying areas that are prone to flooding. Rainfall and runoff will also cause hazardous driving conditions.

The advisory may be extended if heavy rain persists.

 

UPDATE: 11:20 a.m. SATURDAY:

The National Weather Service issued several weather advisories on Saturday morning, warning residents across the state of possible severe weather situations throughout the weekend. 

A flash flood watch for all Hawaiian islands has been issued through Sunday afternoon. Officials say an unstable atmosphere with a lot of moisture could mean heavy rains and have advised residents to stay away from streams and other low lying, flood prone areas.

The island of Kauai was under a flood advisory, but was canceled shortly after 9 a.m.

The National Weather Service has also issued a special advisory statement for Saturday, saying that thunderstorms and funnel clouds are a possibility through approximately 6 p.m. this afternoon. 

To follow severe weather with the Hawaii News Now interactive radar, click here: http://hine.ws/radar

Download the Hawaii Weather Now mobile app here: http://bit.ly/12Yi7pm

Copyright 2013 Hawaii News Now. All rights reserved.