Hawaii County climate forecast is April 03, 2021

Hilo

Today: Showers likely, mostly before noon. Cloudy with a high near 75. East winds 8-10 mph. The probability of rainfall is 70%. New rainfall levels of less than a tenth of an inch possible.

Tonight: Frequent showering. Low around 63. Light west-southwest wind. The probability of precipitation is 90%. New amounts of precipitation between a quarter and a half inch are possible.

Sunday: Frequent showers, mostly before noon. High near 76. East winds around 10 mph. The probability of rainfall is 80%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Kona

Today: A few showers after noon. Partly sunny, with a high near 79. West winds around 11 mph. The probability of rainfall is 20%.

Tonight: A few showers, mostly before midnight. Mostly cloudy, with a low of about 62. East-southeast wind about 11 km / h. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

THE ARTICLE CONTINUES BELOW THE ADVERT

Sunday: A few showers after noon. Partly sunny, with a high near 79. West winds around 11 mph. The probability of rainfall is 20%.

Waimea

THE ARTICLE CONTINUES BELOW THE ADVERT

Today: a few showers. Mostly cloudy with a peak near 74. Northeast winds 11-23 km / h, with gusts up to 18 km / h. The probability of precipitation is 50%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Tonight: A few showers. Mostly cloudy, with a low of around 53. East winds around 23 km / h, with gusts of up to 30 km / h. The probability of precipitation is 50%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Sunday: A few showers. Mostly cloudy, with a peak near 74. East-northeast wind around 22 km / h, with gusts of up to 18 km / h. The probability of precipitation is 50%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Kohala

THE ARTICLE CONTINUES BELOW THE ADVERT

Today: Frequent showering. High near 70. Northeasterly winds 11 to 13 miles per hour. The probability of precipitation is 80%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Tonight: Frequent showering. Low around 46. East winds around 14 mph, with gusts up to 18 mph. The probability of precipitation is 90%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Sunday: Frequent showers. High near 70. Northeasterly winds at 13 mph. The probability of rainfall is 80%. New amounts of rainfall between half an inch and three quarters of an inch are possible.

Southern big island

Today: single showers. Partly sunny, with a peak near 76. Windy, with an east-northeast wind around 38 km / h, with gusts of up to 50 km / h. The probability of precipitation is 20%.

Tonight: A few showers. Mostly cloudy, with a minimum of about 71. Windy, with an east-northeast wind of about 38 km / h, with gusts of up to 50 km / h. The probability of precipitation is 40%. New rainfall levels of less than a tenth of an inch possible.

Sunday: A few showers. Partly sunny, with a peak near 76. Windy, with an east-northeast wind around 38 km / h, with gusts of up to 50 km / h. The probability of precipitation is 30%.

Feedback

Today: Showers likely. Cloudy with a high near 75. East-northeast winds around 9 mph. The chance of precipitation is 70%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Tonight: Frequent showering. Low around 62. Calm wind. The probability of precipitation is 90%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Sunday: Frequent showers. High near 75. East-northeast winds at 9 mph. The probability of rainfall is 80%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Waikoloa

Today: Mostly sunny, with a peak near 80. West-northwest wind around 11 km / h.

Tonight: Partly cloudy with a low of about 63. East-northeast winds at about 11 mph.

Sunday: Mostly sunny, with a peak near 80. Northwest wind about 11 km / h.

Summary

A strong high in the north of the area will emerge in the southeast by Monday and then weaken in the second half of next week. An increase in clouds and showers is expected during the course of today and will continue until Monday.

discussion

No significant changes to the forecast with the morning package. High pressure far to the north will stimulate the trade winds in the next few days. Meanwhile, a surface depression in the northeast will last until the middle of next week. Moisture from an old front will seep into the trades and is expected to add to clouds and showers today through Monday.
Some high clouds are coming in from the west and coverage is expected to increase nationwide today. An upper trough will swing through the state on Sunday and bring colder temperatures to the region. The models show that drier rainwater (PW) moves in from the north during this time, and the high should encourage the trade winds. While the colder temperatures could indicate some instability, the drier air mass and thunderstorm would limit the development of thunderstorms.
The surface depression in the extreme northeast is expected to weaken in the second half of the week. Meanwhile, the high in the north will intensify in the first half of the week, which will help maintain a breezy trade wind pattern. Since the low disappears in the second half of the week, residual moisture is carried into the trades, which could increase showers at times.
Global models agree that PW values ​​will be below 1 inch for most of the new week. A short wave seems to vibrate through the islands during the week, but with limited PW and temperatures not dropping in the upper range, it should have minimal impact on our weather.

aviation

The high pressure in the north of the state will intensify in the next few days or so, causing the trade winds to rise. Isolated to intermittently dispersed MVFR conditions will be mainly limited to windward terrain. Aside from afternoon and evening clouds and showers on the Kona slopes of the Big Island, VFR will predominate over the lee areas during the day.
No AIRMETs are currently in force. The build-up of trade winds during the weekend is likely to result in an increase in low-level turbulence over and downwind of the site and require the issuance of AIRMET Tango. An upper trough running northeast of the state can now increase rainfall in the direction of the wind and lead to AIRMET Sierra for darkening the mountains.

marine

A moderate northeast trade wind is expected to increase by one level locally today, as a wide area with high surface pressure is building up across the islands to the south. This survey requires a Small Craft Advisory (SCA), which will come into effect shortly, covering the waters around Maui County and the waters south of the Big Island. The SCA is valid until Monday 6 a.m. HST. Another boost in cruises will come on Monday, when moderate to strong trade winds hit all if not most of Hawaiian nearshore waters. With this in mind, the SCA can be expected to expand to cover most, if not all, of the remaining coastal waters. It should be noted that the SCA also cover elevated seas of 10 feet or higher, as explained Schlag.
The airy / windy trade winds are supported by a reinforcing surface height of 1037 mb, which is located far north of the islands. There is a slight southward shift of the high center through Monday, but it is almost stationary overall through Tuesday next week. The second thrust brings very rough and choppy seas into the island’s waters.
In addition, a surface depression about a thousand miles northeast of the islands will intensify to storm strength during the day. A moderate to large swell is then generated in the direction of the islands. This swell is expected to reach our north and northeast facing banks from Sunday night to Monday. The combination of this swell and the rise in the trade winds results in elevations at or above 10 feet, the other threshold for an SCA. In addition to the SCA, a high surf advisory for the east-facing coasts is very likely. Surf along the north-facing banks to medium altitudes.
The trade winds will tend to be somewhat weaker on Tuesday night / Wednesday of next week. The surf and the sea follow shortly thereafter.
As for the weekend, surfing along the east coast is expected to be in the small to medium range today, then a little higher on Sunday. The north-facing coastlines will experience a similar rise as this north-northeast to northeast wave mentioned above approaches the islands.
A background south swell with long periods of about 15 seconds will maintain small surf along the south-facing banks through Tuesday.

HFO clocks / warnings / notices Ad

Small Craft Advisory until Monday 6:00 HST for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.

Data courtesy of NOAA.gov

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