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


The latest update to this website was 1216pm Thursday HST


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

0.20  Lihue, Kauai
0.41  Tunnel RG, Oahu
0.02  Puu Alii, Molokai
0.00  Lanai
0.05  Waikamoi Treeline, Maui
0.24  South Point, Big Island


The following numbers represent the strongest wind gusts (mph) Thursday afternoon:

23  Port Allen, Kauai – ESE
27  Kuaokala, Oahu – E
22  Makapulapai, Molokai – ESE
17  Lanai 1, Lanai – NE
28  Na Kula, Maui – SE
33  Puuanahulu, Big Island – N 


Hawaii’s Mountains – Here’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.

https://weather.gc.ca/data/satellite/goes_gwdisk11_1070_100.jpg

Big Blue…click twice for largest version

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/tpw/13/GOES18-TPW-13-900x540.gif

Cold front northwest…thunderstorms far south 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20261131340-20261132130-GOES18-ABI-HI-GEOCOLOR-600x600.gif

 Mostly lower level clouds across the island chain

 

https://radar.weather.gov/ridge/standard/HAWAII_loop.gif

https://radar.weather.gov/ridge/standard/PHKI_loop.gif

https://radar.weather.gov/ridge/standard/PHKM_loop.gif

Showers locally 

 

https://www.weather.gov/wwamap/png/hfo.png

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




~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Thursday comments:  I’m here in a wonderful vacation rental at The Sea Ranch, Sonoma County, California with my friend Bob, continuing on in my working vacation.

430am Hawaii time, it’s totally clear here this morning, and we had a chilly 42 degree low. I slept soundly, and am looking forward to another day here on the coast.

935am Hawaii time, just back from a 2-mile walk down to the ocean, which was chalked up with white caps. We stopped and talked to two separate older gentlemen, who both live here in Sea Ranch…both retired. They were both very interesting, and were both 85 years old, and still sharp.

 

>>> Highest Temperature Wednesday, April 22, 2026 – 99 degrees at Grande Village, TX
>>> Lowest Temperature Thursday, April 23, 2026 – 11 degrees near Manila, Utah

 

Hawaii’s Broad Brush Weather Overview…as of Thursday afternoon:  A surface ridge building north of the islands will allow moderate trade winds to return to the islands today. Rainfall will be limited into the weekend due to an upper level ridge over the islands. However low level moisture riding in on the trades will bring more typical windward and mountain showers by the end of the weekend.

Weather Details for the Hawaiian Islands…as of Thursday afternoon: According to the Hawaiian Volcano Observatory, Kilauea`s episode 45 eruption began not long after midnight. An Ashfall Advisory was recently issued for volcanic debris that may be reaching areas to the south to southwest of the volcano.

A low pressure system east-northeast of the islands, combined with low north-northwest of the islands, are helping to disrupt the trade wind flow. However, the low east-northeast will continue to weaken today, as it moves to the east away from the islands. And the low to the north-northwest will lift to the north.

As this happens, the ridge to the north will strengthen, and moderate trades will filter back over the islands. The models agree on mid level ridging over the region, which will help to maintain a stable airmass, thereby limiting rainfall totals over the next few days.

The models are in good agreement that moisture from the above mentioned low will get caught up in the trade wind flow over the weekend, and will make its way into the islands. This will help us return to a more typical trade wind weather pattern with some showers over the windward areas, along with the clouds and showers that form over the Kona slopes during the afternoon.


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 Map / Looping Surface Precipitation…through the next 8-days / Vog Map

 

Marine Environmental Conditions…as of Thursday: Trade winds will be making a come back in response to an upper ridge, slowly expanding in from west-northwest of the islands. The associated surface high far northwest of the offshore waters will travel east, passing north of the local waters, and be northeast of the area by early next week. This will produce a tight enough Central Pacific pressure gradient over the islands, to maintain moderate to locally fresh trade wind magnitudes the next several days.

Trades will persist through the weekend as another high passes north of the state. Brief periods of locally strong winds will be possible this weekend across the windier channels and bays surrounding Maui County and Big Island.

A small, short to medium period northwest swell that peaked yesterday, will gradually level out the next few days. A pair of North Pacific gale lows will send a series of small north to northwest swells down into the local waters Friday night through the first half of next week. These swells will maintain waist to head high surf along north-facing shores into next week. An overlapping small, short to medium period north northeast swell that peaked yesterday afternoon, introduced advisory level surf along many northeast to eastern exposures, as well as elevating surf to above average heights along select Maui and Big Island western shores. This swell has leveled out and fallen below levels that will not produce advisory level surf.  An enhanced northeast fetch in the proximity of a vicinity weak low northeast of the islands will push in a secondary swell Friday.

Moderate to fresh trades will also support near seasonal average east-facing shore wind wave surf. Small background energy from the west will continue to linger the next few days and fade out this weekend. A small southwest bump from Tasman Sea gale energy that passed across American Samoa`s 51209 buoy yesterday is expected to arrive this weekend. No significant south swells are expected through the first half of next week.

 

No photo description available.


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 cyclones

>>> Gulf of Mexico: There are no active tropical cyclones

Here’s the link to the National Hurricane Center (NHC)

 

>>> Eastern Pacific: There are no active tropical cyclones

Here’s the link to the National Hurricane Center (NHC)

>>> Central Pacific: There are no active tropical cyclones

Here’s the link to the Central Pacific Hurricane Center (CPHC)

 

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

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

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



Interesting:  Common Asian Plant in Brazil Shows Potential for Removing Microplastics From Water

A saline extract obtained from moringa, also known as white acacia, exhibited properties similar to aluminum sulfate in the coagulation process preceding the filtration of water for human consumption.

The study was published in the journal ACS Omega, published by the American Chemical Society.

Moringa is native to India and well-adapted to various tropical countries. It is used for a variety of purposes, such as food, through the consumption of its leaves and seeds, which are nutritious. For several years, researchers have studied the potential of the seeds in water treatment.

“We showed that the saline extract from the seeds performs similarly to aluminum sulfate, which is used in treatment plants to coagulate water containing microplastics. In more alkaline waters, it performed even better than the chemical product,” says Gabrielle Batista, the first author of the study. She conducted the research as part of her master’s degree in the Post-Graduate Program in Civil and Environmental Engineering (PPGECA) at the Bauru School of Engineering (FEB) at UNESP.

Read More: Fundação de Amparo à Pesquisa do Estado de São Paulo