Flood advisory, watch canceled but threat of showers remains
UPDATE: 3:30 p.m.
The flood watch for Maui and Hawaii island has been canceled.
There are no National Weather Service watches, warnings, or advisories remaining.
Forecasters said that the potential for locally heavy rain and a few thunderstorms across Hawaii remains throughout the day.
“A cold front will approach the islands then stall and dissipate Wednesday,” they said. “This will bring a period of wet trades and breezy conditions later this week and into the weekend, with clouds and showers favoring windward and mauka areas.”
11 a.m.
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The flood advisory for Oahu has been canceled.
Radar around 10:30 a.m. showed that the heavy rain over the island had diminished, the National Weather Service said.
A flood watch for Maui and the Big Island remains in effect through this afternoon.
“Deep tropical moisture associated with a trough of low pressure will stall over the Kauai Channel today and dissipate by this evening,” forecasters said. “This combined with a passing disturbance aloft will maintain the threat for heavy rain, flash flooding, and the potential for a few thunderstorms, especially over windward portions of the Big Island and Maui.”
7:50 a.m.
A flood advisory has been posted for Oahu through 11 a.m. today.
Radar at 7:45 a.m. showed heavy rain over Oahu with more showers moving in from the south, according to the National Weather Service. Rain was observed falling at up to 2 inches per hour.
Some locations that will experience flooding include Honolulu, Waipio, Mililani, Pearl City, Waikele, Wahiawa, Wheeler Field, Waipahu, Aiea, Kunia, Halawa, Waiahole, Waikane, Schofield Barracks, Salt Lake, Kahaluu, Moanalua, Ahuimanu, Iroquois Point and Ewa Beach.
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The National Weather Service has canceled the flash flood warning for Hawaii island as heavy rainfall has subsided this morning.
Weather officials advise drivers that Highway 11 at Kawa Flats remains partially closed, with traffic reduced to one lane due to earlier flooding.
A flood watch continues for both Maui and Hawaii island until 6 p.m. today. The combination of lingering tropical moisture and an approaching cold front brings the potential for additional rainfall and isolated thunderstorms, especially in windward areas.
Residents and visitors are advised to remain cautious near streams and low-lying areas, as flood-prone roads may still experience runoff throughout the day. Drivers are urged to avoid flooded roads and exercise caution in partially closed areas.
Looking ahead, the National Weather Service forecasts that a surface trough and its accompanying tropical moisture plume will keep parts of the state under the threat of heavy rain and isolated thunderstorms through today. Conditions are expected to improve as the trough dissipates by tonight, easing the risk of significant downpours for most areas.
Starting Wednesday, a cold front will approach the islands, partially moving through the state before stalling and dissipating by Thursday. A new high-pressure system building to the north will bring a shift to wetter tradewinds and breezy to locally windy weather, likely lasting through the weekend.