Hawaii Island Information Update for January 7th, 2020

Notice Level: Advisory (Information Update Needed)


Wind Advisory for parts of Hawaii Island remains in effect until 6:00 pm Wednesday evening (January 8th). The High Wind Warning originally issued for the North and South Kohala districts has since been downgraded to a Wind Advisory and also remains up until Wednesday evening.


Flash Flood Watch for Hawaii Island will go into effect at 6:00 am Thursday morning (January 9th) and will remain in effect until 7:00 pm Saturday evening (January 11th). Heavy showers and the possibility of thunderstorms is possible during that period.


High Surf Advisory for the North and East Facing shores of Hawaii Island remains in effect until 6:00 pm Friday evening (January 10th). 6 to 10-feet is expected through Wednesday, later building to 8 to 12 feet on Friday, maybe upgraded to a warning.


No outages to cable, phone, or electricity to report as 5:00 pm Tuesday evening. Also, no road or lane closures to report as of 5:00 pm Tuesday evening related to the wind or weather events.

Synopsis:


Strong and gusty trade winds will continue through the week. Showers will focus on windward areas with some reaching leeward locations of the smaller islands. Wetter weather is likely during the second half of the week as a low aloft moves near the islands.

FLASH FLOOD WATCH IN EFFECT FROM THURSDAY MORNING THROUGH SATURDAY EVENING The National Weather Service in Honolulu has issued a * Flash Flood Watch for Maui and the Big Island. * From Thursday morning through Saturday evening * An unstable air mass will move over the islands during the second half of the week bringing an increase in shower activity. While showers will be possible over most areas, the most susceptible to flooding will be windward areas which have already received rain this week. * The extended period of rain could cause flooding in low spots which could make some roadways impassable. Debris in streams and gulches may clog bridges and culverts. Strong winds may cause tree branches to fall which will add to the amount of possible debris. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions are favorable for flash flooding. Flash flooding is LIFE-THREATENING. Do not cross fast flowing water in your vehicle or on foot. Monitor later forecasts and be prepared to take action if a Flash Flood Warning is issued. If you experience heavy rain or rising water, head to higher ground immediately.

WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST WEDNESDAY * WHAT...East winds 20 to 35 mph with gusts up to 50 mph. * WHERE...Portions of Oahu, Kahoolawe, Lanai, Maui and the Big Island Hawaii. The strongest winds will be through gaps as well as over and downslope of ridges. On Oahu this includes areas over and downslope of the Koolau and Waianae ranges. On the Big Island this includes areas over and downslope of the Kohala mountains, as well as through the Saddle and around South Point. * WHEN...Until 6 PM HST Wednesday. * IMPACTS...Winds this strong can tear off shingles, down tents, knock down tree branches and make it difficult to steer high profile vehicles, and can cause power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... Watch out for falling tree branches when walking or driving. Be prepared for power outages.

HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST FRIDAY... * WHAT...Surf of 6 to 10 feet, rising to 8 to 12 feet Wednesday, and possibly building to high surf warning levels Thursday and Friday. * WHERE...East facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island. * WHEN...Until 6 PM HST Friday. * IMPACTS...Moderate. Expect strong breaking waves, shore break, and strong longshore and rip currents making swimming difficult and dangerous. * ADDITIONAL DETAILS...The combination of high surf, strong onshore winds and elevated ocean water levels will result in beach erosion and wave runup along east facing shores later in the week, when full moon high tides coincide with the elevated surf. PRECAUTIONARY/PREPAREDNESS ACTIONS... Beachgoers, swimmers, and surfers should heed all advice given by ocean safety officials and exercise caution. Know your limits and seek ocean recreation areas best suited for your abilities. When in doubt, don`t go out.

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