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West Hawaii Weather Update for January 9th, 2021

A Flood Advisory for the North Kona district has been canceled, however, wet weather around the West Hawaii districts is expected to continue into early Sunday morning (January 10th).

HIRSC - Weather Team


Rainfall Accumulations as of 10:20 pm HST

The HIRSC - Weather Team is continuing to monitor a cold front that is quickly moving and dissipating over the West Hawaii region bringing in some moderate to heavy showers with brief periods of thunderstorms, some of which can be strong thunderstorms producing lightning, gusty winds, and heavy rainfall). The wet weather is expected to continue into the late evening hours of Saturday (January 9th) and going into the early morning hours of Sunday (January 10th).

A Flood Advisory was up for the North Kona district and later canceled at 10:15 pm Saturday evening and a Special Marine Warning that was up for waters around Hawaii Island has also since been canceled as well. There was a brief event of hail that occurred in the waters offshore of West Hawaii and also in open pasture land of Hualalai Ranch on Saturday evening, however, field reports show that hail was pea-size and no larger than 1 inch in diameter and no damage was reported.

Based on the latest weather models/radar images, the tail end of a cold front is moving quickly to the southwest, indicating the most of the rainfall from this cold front is expected to occur all over the West Hawaii region (mainly focused over the North Kohala, Honoka'a, and Kohala Ranch area and also the Kona Coast from Kiholo Bay to Kailua-Kona). Residents should continue to hear periods of thunderstorms and see brief flashes of lightning. The heaviest rainfall is expected to occur in waters offshore of North and West Hawaii.

Weather conditions are expected to improve before sunrise on Sunday morning and the possibility of some afternoon clouds and scattered showers along the upper slopes of the Kona Coast and Kona Coast should also expect hazy conditions as well related to volcanic emissions (vog) from Kīlauea Eruption in Halema'uma'u Crater.

Here's a summary of the highest rainfall accumulations recorded around West Hawaii as of 10:15 pm on Saturday evening:

- Kalaoa: 1.07"

- Kona Vistas Subdivision (Kailua-Kona): 1.15"

- Komohana Kai Subdivision (Kailua-Kona): 0.71"

- Holualoa: 0.52"

- Hawi: 0.32"

- Ali'i Heights: 0.32"

- Kahalu'u: 0.17"

- Keauhou Mauka: 0.21"

- Captain Cook: 0.12"

- Kamuela: 0.02"

- Trace amounts recorded around Puako, Kawaihae, Waikoloa Village, and Pu'uanahulu.

Thunderstorms offshore from North Kohala near Maui visible from Gemini Telescope west camera on Maunakea

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