Hilo
The rest of the day: Mostly cloudy. Occasional showers in the morning and multiple showers in the afternoon. Highs near the coast will be 76 to 87 degrees, with highs around 69 degrees at 4,000 feet. Northeast wind, reaching 10 mph. The chance of rain is 90%.
tonight: Mostly cloudy. There will be multiple showers in the evening, with scattered showers after midnight. Low pressure near the coast is 65 to 71 degrees, and low pressure at 4,000 feet is about 58 degrees. Northwest winds reaching 10 mph. The chance of rain is 70%.
Wednesday: It will be partly sunny with scattered showers in the morning, and mostly sunny with scattered showers in the afternoon. Highs near the coast will be 76 to 87 degrees, with highs around 69 degrees at 4,000 feet. North winds turning to the northeast in the afternoon, with winds reaching 15 mph. The chance of rain is 50%.
kona
The rest of the day: Partly sunny. There will be scattered showers in the morning and showers in the afternoon. Highs near the coast are 82 to 88 degrees, with highs around 69 degrees near 5,000 feet. Southwest winds turning to the west in the afternoon with gusts as high as 10 mph. The chance of rain is 70%.
tonight: Mostly cloudy with scattered showers. Low pressure near the coast is about 74 degrees, and low pressure at 5,000 feet is 51 to 56 degrees. breeze. The chance of rain is 50%.
Wednesday: Mostly clear in the morning then becoming partly clear. Scattered showers. Highs near the coast are 81 to 88 degrees, with highs around 68 degrees near 5,000 feet. Northwest winds reaching 10 mph. The chance of rain is 40%.
water
The rest of the day: Breeze. Mostly cloudy with scattered showers. Highs will be 72 to 81 degrees near the coast and 67 to 80 degrees near 3,000 feet. East wind 10 to 20 mph. The chance of rain is 50%.
tonight: Mostly cloudy with scattered showers. Low pressure is 64 to 71 degrees near the coast and about 61 degrees near 3,000 feet. East wind 10 to 15 mph. The chance of rain is 50%.
Wednesday: It will be mostly sunny with scattered showers in the morning, and partly sunny with scattered showers in the afternoon. Highs will be 72 to 81 degrees near the coast and 66 to 79 degrees near 3,000 feet. East wind 10 to 15 mph. The chance of rain is 40%.
koala
The rest of the day: Breeze. Mostly cloudy with scattered showers. Highs will be 72 to 81 degrees near the coast and 67 to 80 degrees near 3,000 feet. East wind 10 to 20 mph. The chance of rain is 50%.
tonight: Mostly cloudy with scattered showers. Low pressure is 64 to 71 degrees near the coast and about 61 degrees near 3,000 feet. East wind 10 to 15 mph. The chance of rain is 50%.
Wednesday: It will be mostly sunny with scattered showers in the morning, and partly sunny with scattered showers in the afternoon. Highs will be 72 to 81 degrees near the coast and 66 to 79 degrees near 3,000 feet. East wind 10 to 15 mph. The chance of rain is 40%.
south island
The rest of the day: Partly sunny. Breeze. There will be scattered showers in the morning and showers in the afternoon. Highs near the coast are about 86 degrees and elevations near 5,000 feet are about 67 degrees. East wind 10 to 20 mph. The chance of rain is 70%.
tonight: Mostly cloudy with scattered showers. The lowest pressure near the coast was around 73 degrees, and the lowest at 5,000 feet was around 52 degrees. East winds reaching 15 mph. The chance of rain is 50%.
Wednesday: It will be mostly sunny with scattered showers in the morning, and partly sunny with scattered showers in the afternoon. Highs near the coast are about 86 degrees, and elevations near 5,000 feet are about 66 degrees. East winds reaching 15 mph, increasing to 10 to 15 mph in the afternoon. The chance of rain is 40%.
Pune
The rest of the day: Mostly cloudy. Occasional showers in the morning and multiple showers in the afternoon. Highs near the coast will be 76 to 87 degrees, with highs around 69 degrees at 4,000 feet. Northeast wind, reaching 10 mph. The chance of rain is 90%.
tonight: Mostly cloudy. There will be multiple showers in the evening, with scattered showers after midnight. Low pressure near the coast is 65 to 71 degrees, and low pressure at 4,000 feet is about 58 degrees. Northwest winds reaching 10 mph. The chance of rain is 70%.
Wednesday: It will be partly sunny with scattered showers in the morning, and mostly sunny with scattered showers in the afternoon. Highs near the coast will be 76 to 87 degrees, with highs around 69 degrees at 4,000 feet. North winds turning to the northeast in the afternoon, with winds reaching 15 mph. The chance of rain is 50%.
Waikoloa
The rest of the day: Mostly clear in the morning then becoming partly clear. Scattered showers in the afternoon. Highs will be 84 to 89 degrees near the coast and 66 to 73 degrees above 4,000 feet. North winds reaching 15 mph will increase to 10 to 15 mph in the afternoon. The chance of rain is 50%.
tonight: partly cloudy. Lows near the coast will be about 75 degrees, and above 4,000 feet above sea level, lows will be 53 to 58 degrees. Southeast winds reaching 15 mph.
Wednesday: Mostly sunny. Highs near the coast are about 86 degrees and altitudes above 4,000 feet are 65 to 73 degrees. Northeast wind, reaching 15 mph.
summary
High pressure will snake its way northwest of the island and weaken over the next few days. Winds will weaken later today and then weaken further during the second half of the week. Weather conditions are stable and rainfall remains light.
discuss
Soundings this morning show the inversion height increased by about a foot overnight and is now about 7 to 8 feet as a slightly above-average moisture field moves across the island chain. High clouds are moving over the state, with low clouds moving from east to west, concentrating clouds and showers in windward and mauka areas. Overnight rainfall totals in rainy areas of Kauai ranged from 0.01 to 0.78 inches. CIMSS satellite observations and model guidance show that the moisture field is filled with dry air behind it, with the inversion height dropping to about 4-6 feet this afternoon. Lower inversion heights and available humidity will further limit showers in windward and mauka areas, leaving most leeward areas fairly dry with fewer showers. The exception is the Big Island's Kona Slope, where afternoon sea breezes can produce scattered showers. This pattern is expected to continue throughout the week, with small fluctuations in inversion height and showers due to diurnal patterns and shifting moisture bands.
The development of low pressure over the far northeast of the island will lead to a weakening of the local pressure gradient in the future. Volume will decline accordingly, falling into moderate territory later today, and may become lighter in the second half of the week as apparent temperatures rise accordingly.
aviation
Breezy trade winds will continue today and are expected to ease slightly tonight. Trade wind showers will continue to bring MVFR cigs/vsbys to windward areas into the early morning hours, with conditions expected to improve by this afternoon.
AIRMET Sierra is now in effect for mountain shelters in windward areas of Kauai, Oahu, Molokai and Maui. Later this morning, this AIRMET may need to be expanded to include the large windward islands.
AIRMET Tango remains effective for moderate low-level turbulence over all island terrain and downwind. The AIRMET may still remain today.
ocean
The high pressure system northwest of the island continues to drift westward. As a low pressure system establishes northeast of the island chain, the ridge axis in the northern part of the state will weaken and move south. Trade winds will continue to weaken on Friday. A Small Craft Advisory (SCA) remains in effect throughout the afternoon for typically windy areas around Maui County and the Big Island. The SCA may be canceled tonight as wind speeds continue to trend downward.
Small background energy from south-southwest swells (200 degrees) will continue along south-facing shores during the first half of the week. A compact storm low has been moving eastward between 170 and 150 degrees along latitudes 25 to 30 degrees south over the past few days. This storm should produce a moderate southward surge that will peak on Thursday, peak on Friday, and slowly decrease over the weekend. Surfs along south facing shores are likely to be near or above summer average (5 feet) Thursday into the weekend.
Surf along the East Coast will continue to be swell and slowly ease over the next few days as the trade winds die down. As the typhoon moved near Taiwan last week, minor background energy from the west-northwest may increase later today into Wednesday.
HFO Observations/Warnings/Recommendations
A small craft advisory is in effect for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, leeward waters of the Big Island, and waters southeast of the Big Island until 6pm HST tonight.
Blue Hawaiian Helicopters brings you real-time Big Island weather.
Check out their Big Island Helicopter Tour today!
Data provided by NOAA.gov
