Glenn James
Hawaii Weather Today
Creator, Author, and Administrator for 30 years

 

The latest update to this website was at 336pm Tuesday afternoon HST


Here are the latest 24-hour precipitation totals (inches) for each of the islands Tuesday afternoon: 

0.93  Kilohana, Kauai
0.21  Manoa Lyon Arboretum, Oahu
0.87  Puu Alii, Molokai
0.00  Lanai
2.49  Puu Kukui, Maui
2.86  Kawainui Stream, Big Island


The following numbers represent the strongest wind gusts (mph) Tuesday morning:

24  Port Allen, Kauai – NE
31  Kuaokala, Oahu – SSW 
31  Molokai AP, Molokai – NE
m   Lanai – missing
44  Kealaloloa Rg, Maui – NNE
44  Waikoloa 2, Big Island – NE


Hawaii’s MountainsHere’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii. Here’s the webcam for the (~10,023 feet high) Haleakala Crater on Maui. These webcams are available during the daylight hours here in the islands, and at night whenever there’s a big moon shining down. Also, at night you will be able to see the stars, and the sunrise and sunset too…depending upon weather conditions.


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Big Blue…click twice for largest version

 

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Hurricane Lowell southeast of Hawaii…with Hurricane Karina far east…with soon to be Hurricane Marie spinning closer to the Mexican coast

 

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 Variable low clouds across the state…high clouds in the vicinity 

 

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Localized showers 

 

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Please open this link to see details on any current Watches, Warnings and Advisories noted above




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Hawaii Weather Narrative
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Glenn’s Tuesday comments:  I’m at home here in upper Kula, Maui, Hawaii

503am, it’s clear here at my place here in Kula with a low temperature of 56 degrees, and the relative humidity is 80%

1240pm, just got back from my weekly shopping trip down to Mana Foods in Paia. The roads were not busy and the parking was so easy in Paia for a change. The weather today as we’ve slipped into September is sunny, although I drove through quite a few showers over on the windward sides, and satellite shows more showers taking aim on the state…carried in on the gusty trade winds.

435pm, it’s still sunny to partly sunny here in upper Kula, while sunny for the most part along the leeward beaches, and cloudy with off an on showers along the windward sides here in Maui.

 

We continue to be in the heart of our hurricane season, so that we need to keep our eyes peeled for systems taking aim on our Hawaiian Islands through the next three months…through the end of November.

As such, the NHC has advisories active on two tropical cyclones, both of which will work their way into our central Pacific…(Lowell is already in our central Pacific)

This first TC is Category 1 Hurricane Lowell, with the current forecast track showing Lowell staying to the south of the islands. The other system, Major Category 4 Hurricane Karina, may move by just to the northeast and north…there’s still a degree of uncertainty.

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time of arrival graphic

 

Hawaii’s Weather Highlights…as of Tuesday afternoon: Breezy trade winds will become strong and gusty tomorrow afternoon. Trade showers will generally favor windward and mauka areas, particularly during the overnight through early morning hours each day. Hurricane Lowell is about 520 miles southeast of Hilo as of 2pm, and is forecast to pass south of the state late Wednesday through Friday.

Winds are expected to remain strong and gusty through Friday as a strong surface pressure gradient develops. The forecast remains uncertain for Labor Day weekend. Lowell is expected to turn north at some point, most likely to the west of the Hawaiian Islands. Karina is forecast to move west toward the state through Thursday, but then turn northwest and miss us to the north.

Weather Narrative..as of Tuesday afternoon: Radar and satellite show isolated trade showers, most notably across Molokai. Winds have been slowly increasing through the day, currently averaging 10 to 20 mph, with gusts 20 to 35 mph.

Models continue to show a spread of possible solutions for the tracks of Hurricanes Lowell and Karina. Lowell is currently forecast by the NHC to continue traveling just north of due west through Saturday, before beginning to turn more northwest. Models indicate that it may turn sharply north at some point, most likely when well west of the islands. However, some models indicate the possibility of an earlier turn which may bring it near or over one of them.

Karina is forecast by the NHC to move WNW through Friday, then begin a more northwest track into the weekend. This track will take it north of the state. A very few models (out of hundreds) bring it west far enough to move into the main islands. Although odds are good that neither storm will directly strike populated islands, it would be wise to stay aware of new forecasts in the coming days.

And finally, Tropical Storm Marie has formed a few hundred miles off the Mexican coast. This storm is approximately 10 days away from potentially moving near Hawaii, and will not be discussed in depth at this time.

Winds will increase Wednesday as Lowell moves closer to the islands, due to an increasing surface pressure gradient (high pressure to the north, Lowell to the south). This will bring wind speeds up close to advisory level by late Wednesday, and an advisory may be issued if confidence becomes higher. Showers will increase tonight with the approach of a moist surface trough (unrelated to current tropical systems).

As the trough moves away to the west late Wednesday, showers will decrease. Thursday and Friday should bring a rather typical number of showers. These showers will be moving a bit faster than normal, and have a better chance to make it briefly over to leeward areas, as they are carried along by moderate to strong trade winds.

Fire Weather: Trade winds will increase in speed tonight into Wednesday, and remain breezy into Friday. Gusts to or over 50 mph will be possible in the typical windy areas. Relative humidity values are forecast to remain too high for critical fire criteria to be reached, and fuels are currently rated as not critical. Therefore, the strong winds will not trigger fire weather watches or warnings. The trade inversion is forecast to be 5,500 feet to 6,500 feet through Wednesday.

 

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Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Here’s the latest Weather MapLooping Surface Precipitation…through the next 8-days / Vog Map

 

Marine Conditions…as of Tuesday afternoon: A strong surface high will remain nearly stationary far north of the Hawaiian Islands rest of this week, keeping fresh to locally strong trade winds in place. A Small Craft Advisory (SCA) remains in effect for the typically windy waters. The SCA will likely need to be expanded as trade winds gradually strengthen across the state to strong to possible locally gale force late Wednesday through Thursday as Hurricane Lowell passes far south. The offshore waters will likely see tropical storm conditions over the far south waters as the core of hurricane force winds remains just outside the area Wednesday into Thursday.

There is still some uncertainty with the forecast track of Lowell, especially late this weekend into early next week as the cyclone begins to gain latitude, which will have significant impacts on the wind, wave, and surf forecast for the region. Adding to the extended forecast uncertainty will be the approach of Hurricane Karina from the east.

A moderate, long-period south swell will continue to fill in overnight and peak Wednesday. Surf along south facing shores should peak below advisory thresholds. This swell will then gradually decline through the rest of the week. A small, medium- period south southeast swell from Lowell has started to fill in overnight through Wednesday before becoming more southerly Thursday through Friday.

These combined swells will keep south shore surf elevated near to just below advisory levels. Beyond that point, the surf forecast is highly dependent on the eventual track and intensity of Lowell, which has the potential to be a significant source of south to southwesterly swell through this weekend and into next week depending on how sharply and quickly the cyclone turns to the north.

Trade wind swell energy will keep rough, choppy surf along all east-facing shores through the coming week. Tonight, a small, medium- period east swell arrives from Hurricane Karina that will build through the week and could push east shore surf to advisory thresholds by this weekend and into next week.

 

>>> Highest Temperature Tuesday, September 1, 2026 – 108 degrees near La Puerta, CA


>>>
Lowest Temperature Tuesday, September 1, 2026 – 26 degrees near Bynum, MT

 

'Hawaii Retro Waves Pixel' Poster, picture, metal print, paint by LVTFCO | Displate


World-wide Tropical Cyclone Activity

 



>>>
Here’s a link to the latest Pacific Disaster Center’s
Weather Wall


Atlantic Ocean: There are no active tropical cyclones

Caribbean Sea: There are no active tropical cyclone

 

Gulf of America: 

Tropical Cyclone 05 (Edouard)…is located about 25 miles northwest of Port Arthur, Texas

CENTER OF EDOUARD PASSING OVER BEAUMONT METROPOLITAN AREA …GUSTY WINDS AND HEAVY RAINFALL CONTINUE SPREADING OVER SOUTHEASTERN TEXAS

According to the NHC advisory number 6A

Edouard is moving toward the northwest near 7 mph, and this motion is expected to continue for the next day or so. On the forecast track, the center of Edouard will continue moving inland over eastern Texas through Wednesday. Maximum sustained winds have decreased to near 50 mph with higher gusts. Continued weakening is expected during the next day or so, and Edouard is forecast to weaken to a tropical depression tonight and dissipate by Wednesday night. Tropical-storm-force winds extend outward up to 25 miles from the center. A weather station in Port Arthur, Texas, recently reported a sustained wind of 38 mph and a gust of 59 mph . A sustained wind of 37 mph and a gust to 55 mph were recently measured at the Beaumont/Port Arthur Southeast Texas Regional Airport. The estimated minimum central pressure based on surface observations is 998 mb (29.47 inches).

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Northeast Pacific:

Tropical Cyclone 11E (Karina)…is located about 1330 miles west of the southern tip of Baja California

KARINA REMAINS A CATEGORY FOUR HURRICANE BUT EXPECTED TO WEAKEN

According to the NHC advisory number 22…

Karina is moving toward the west near 12 mph and a westward to west-northwestward motion is expected during the next few days. Maximum sustained winds are near 130 mph with higher gusts. Karina is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Gradual weakening is expected during the next several days. Hurricane-force winds extend outward up to 35 miles from the center and tropical-storm-force winds extend outward up to 115 miles. The estimated minimum central pressure is 949 mb (28.03 inches).

 

Tropical Cyclone 13E (Marie)…is located about 510 miles south of the southern tip of Baja California

MARIE STRENGTHENING …EXPECTED TO BECOME A HURRICANE ON WEDNESDAY

According to the NHC advisory number 3…

Marie is moving toward the northwest near 8 mph. A turn toward the west-northwest is expected on Wednesday and that motion should continue through Thursday. Recent satellite wind data indicate that the maximum sustained winds have increased to near 60 mph with higher gusts. Additional strengthening is expected during the next 48 hours, and Marie is expected to become a hurricane on Wednesday. Tropical-storm-force winds extend outward up to 195 miles mainly to the east and southeast of the center. The estimated minimum central pressure is 997 mb (29.44 inches).

 

Central North Pacific

Tropical Cyclone 12E (Lowell)…is located about 535 miles southeast of Hilo, HI

LOWELL STRENGTHENING QUICKLY …FORECAST TO BECOME A MAJOR HURRICANE ON WEDNESDAY

According to the NHC advisory number 21…

Lowell is moving toward the west-northwest near 10 mph. A west to west-northwest motion is expected to continue during the next several days. Satellite imagery indicates that maximum sustained winds have increased to near 90 mph with higher gusts. Additional strengthening is forecast during the next day or two, and Lowell is expected to become a major hurricane on Wednesday. Hurricane-force winds extend outward up to 25 miles from the center and tropical-storm-force winds extend outward up to 90 miles). The estimated minimum central pressure is 977 mb (28.85 inches).

 

Northwest Pacific Ocean:

Tropical Cyclone 17W (Saudel) is located approximately 129 NM east-southeast of Hong Kong

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Tropical Cyclone 22W (Krovanh) is located approximately 408 miles southeast of Kadena AB

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>>> Southwest Pacific Ocean: There are no active tropical cyclones

>>> North and South Indian Oceans / Arabian Sea: There are no active tropical cyclones

Here’s the link to the Joint Typhoon Warning Center (JTWC)



Interesting:
Leaded Aviation Gas Drives Up Lead Levels Near Regional Airports, Raising Health Concerns, New Study Finds

Emissions from aircraft that use leaded aviation gasoline are a significant source of environmental pollution in neighborhoods near regional airports, a new study by researchers at Oregon State University and Portland State University has found.

Lead levels were much higher near two Portland, Oregon-area regional airports than urban areas located farther away, and the dominant source of the lead is aviation fuel, said Alyssa Shiel, an environmental geochemist at Oregon State University, and one of the study’s corresponding authors.

“While lead was phased out of motor vehicle gasoline decades ago, piston-engine aircraft – small planes such as single-engine trainers, light twin-engine planes, agricultural crop-dusters and vintage war planes -remain the largest remaining source of airborne lead emissions in the country,” said Shiel, an associate professor in OSU’s College of Earth, Ocean, and Atmospheric Sciences.

Read More: Oregon State University

A small plane sits at an airport.