Hawaii County climate forecast is June 10, 2021

Hilo

Today: a few showers. Partly sunny, peaking near 80. Light and changeable winds blowing from east-northeast 5 to 8 miles per hour in the afternoon. The probability of precipitation is 50%. New rainfall levels of less than a tenth of an inch possible.

Tonight: Showers likely, mostly after midnight. Mostly cloudy with a low of about 67. East-northeast winds 5 to 8 mph will be calm. The probability of precipitation is 60%. New rainfall levels of less than a tenth of an inch possible.

Friday: A few showers. Partly sunny with a high near 81. Calm wind blowing 5 to 8 miles per hour from the east in the afternoon. The probability of precipitation is 50%. New rainfall levels of less than a tenth of an inch possible.

Kona

Today: individual showers after 1 p.m. Mostly sunny, peaking near 80. Calm wind blowing from the southwest at 5 to 8 miles per hour in the afternoon. The probability of precipitation is 20%.

Tonight: A few showers before 1am. Partly cloudy with a low of about 66. South winds 5 to 9 mph become calm after midnight. The probability of precipitation is 20%.

THE ARTICLE CONTINUES BELOW THE ADVERT

Friday: single showers after 1 p.m. Mostly sunny with a high near 80. Light and changeable wind blowing 5 to 10 miles per hour from the west in the morning. The probability of precipitation is 20%.

Waimea

THE ARTICLE CONTINUES BELOW THE ADVERT

Today: a few showers. Partly sunny, with a peak near 74. Windy, with a northeasterly wind of 17 to 35 km / h, which increases to 23 to 45 km / h in the afternoon. Gusts of wind can reach up to 40 miles per hour. The probability of precipitation is 40%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Tonight: A few showers. Mostly cloudy with a minimum of about 57. Windy, with northeasterly winds of 21 to 24 mph, with gusts of up to 54 mph. The probability of precipitation is 40%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Friday: A few showers. Partly sunny, peaking near 76. Breezes, with northeasterly winds of 16 to 28 mph, with gusts of up to 40 mph. The probability of precipitation is 40%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Kohala

THE ARTICLE CONTINUES BELOW THE ADVERT

Today: Showers likely. Mostly cloudy, with a peak near 68. Very windy, with an easterly wind around 50 km / h, with gusts up to 45 km / h. The probability of precipitation is 70%. New rainfall levels of less than a tenth of an inch possible.

Tonight: Showers likely. Mostly cloudy, with a low of about 56. Very windy, with an easterly wind of about 50 km / h, with gusts of up to 45 km / h. The probability of precipitation is 70%. New rainfall levels of less than a tenth of an inch possible.

Friday: Showers likely. Mostly cloudy, with an altitude of nearly 69. Windy, with easterly winds of 16 to 24 mph, with gusts of up to 54 mph. The probability of precipitation is 60%. New rainfall levels of less than a tenth of an inch possible.

Southern big island

Today: A few showers before noon. Sunny, with a peak near 83. Windy, with an easterly wind of 28 to 50 km / h, with gusts of up to 60 km / h. The probability of precipitation is 20%.

Tonight: A few showers. Partly cloudy, with a minimum of about 72. Windy, with east-northeast winds of 26 to 45 mph, with gusts of up to 60 mph. The probability of precipitation is 20%.

Friday: Sunny, with a high near 83. Windy, with an easterly wind of 23 to 42 mph, with gusts of up to 54 mph.

Feedback

Today: Showers likely, mostly before noon. Mostly cloudy with a high near 75. Northwest winds 9 to 24 mph turning northeast in the afternoon. Gusts of wind can reach up to 18 miles per hour. The probability of precipitation is 60%. New rainfall levels of less than a tenth of an inch possible.

Tonight: Showers likely. Mostly cloudy with a minimum of about 64. Northeasterly winds 8 to 21 mph, coming in from the northwest after midnight. The probability of precipitation is 70%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Friday: Showers likely, mostly before noon. Partly sunny with a high near 76. Northwest winds 7 to 9 mph turning east-northeast in the afternoon. The probability of precipitation is 60%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Waikoloa

Today: Sunny, with a high near 83. Windy, with a southeast wind of 5 to 10 mph turning 18 to 23 mph from the east-northeast in the afternoon. Winds can blow up to 32 miles per hour.

Tonight: Mostly clear, with a minimum of 65. Windy, with east-northeast winds of 16 to 24 miles per hour, with gusts of up to 54 miles per hour.

Friday: Increasing cloudiness, peaking near 83. East winds 8 to 11 miles per hour turning north in the afternoon.

Summary

The gusty trade winds will continue through Friday, but trades will ease slightly this weekend. Low clouds and brief trade showers will continue along the windward sections, especially at night and in the morning. Leeward areas of the smaller islands will be mostly dry, but the upstream leeward sections of the Big Island will continue to experience scattered showers every afternoon and evening. The trade winds are expected to gradually get stronger again at the beginning of next week.

discussion

A 1031MB surface high pressure system is located near 36N 164W or approximately 1000 miles north-northwest of Honolulu. The very narrow pressure gradient south of this feature sustains local windy trade winds over the main Hawaiian Islands early in the morning. The mountain ranges in the middle of the troposphere also ensure stable atmospheric conditions in the region. Loops of satellite imagery and radar reflectance data show that the robust, low-level trade winds transport broken low clouds with embedded scattered showers into most of the islands’ windward slopes and coastal stretches.
The latest model edition shows no major changes to the current forecast. Expect the typical breezy trade wind weather pattern to continue over the Hawaiian Islands in June. Little significant accumulation of precipitation is expected as the atmosphere over the state will remain confined well below 7,000 feet. Low clouds and short showers will continue on upwind sections, especially at night and in the morning. The sky will remain mostly clear over most of the leeward stretches of the smaller islands, but there may be an occasional shower or two. In the uphill sections of the leeward Big Island, there will continue to be clouds and isolated showers every afternoon and evening. Note that global models suggest that residual moisture from a former frontal band, currently near 23N 150W, could result in a slight spike in trade showers in parts of Kauai and Oahu on Friday.
This weekend, the predictive models show a complex low pressure system developing over the Northeast Pacific. This is intended to weaken the surface high, which is currently located far north-northwest of the islands. At the same time, a weak surface ridge is expected to descend near the 25th parallel. This scenario is likely to weaken trade wind speeds this weekend. However, it appears that the lightest winds will be east-northeast of the islands, with light to moderate trade winds lasting over most of the state.
Looking ahead to the beginning of next week, the surface high will build up far north of the state, which will further exacerbate the pressure gradient in the region. Therefore, the trade winds gradually get stronger from Monday night or Tuesday. The forecast models also show a ragged band of low clouds and showers associated with a weakening frontal boundary pushing south toward the islands early next week. This could potentially cause trade showers to rise over parts of Kauai and possibly Oahu next Tuesday and Wednesday.

aviation

A large high pressure ridge in the north of the islands will keep gusty trade winds in the forecast until this evening. These stronger trade winds will create clouds and brief showers over the windward and mountain ranges of each island. Cloud and shower trends will increase in the night to early morning hours, when short periods of MVFR conditions are possible along these preferred windward slopes.
AIRMET Sierra in effect for Mountain Obscuration over the north and east slopes of Kauai, Oahu, Molokai, Maui, and the Big Island. The coverage of this AIRMET will likely decrease after sunrise.
AIRMET Tango remains in effect for moderate turbulence over and SW to NW of the Inselbergs due to strong winds flowing over higher terrain features. This AIRMET will probably last until Friday.

marine

Fresh to strong east trade winds will last until Friday as the gradient over the region remains narrow. A back weakness is expected to form in the northeast on Friday into the weekend as a front dips south over the northeast Pacific. The eastern trades will be responsive and fall into the moderate to fresh category, possibly enough to loosen the small craft advisory for all areas by Saturday.
Surfing along the east facing coastlines will remain rough today due to the strong trades. A downtrend is expected Friday through the weekend as upstream trades will be disrupted from the aforementioned front falling south across the Northeast Pacific.
Surfing along the north coast will stay near flat levels throughout the weekend, with the exception of the typical areas exposed to trade wind energy to wide low pressure over the Gulf of Alaska.
Surfing along the south-facing coastlines remains small during the weekend, with mostly small, southerly swells pervading. A favorable pattern unfolding within Hawaii’s wave window across the southern hemisphere this weekend could lead to an uptrend locally by the third week of June.

HFO clocks / warnings / notices Ad

Small Craft Advisory until Friday 6:00 p.m. HST for Kaiwi Channel, Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.
Small boat advice until 6:00 p.m. HST tonight for Kauai Northwest Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters, Oahu Leeward Waters, Maui County Windward Waters, Maui County Leeward Waters, Big Island Windward Waters.

Data courtesy of NOAA.gov

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