The latest update to this website was at 1250pm Friday (HST)

 

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

0.08  Mount Waialeale, Kauai
0.82  Poamoho RG 1, Oahu
0.10  Puu Alii, Molokai
0.00  Lanai City, Lanai
0.13  Baseyard EMI, Maui
0.31  Honolii Stream, Big Island

The following numbers represent the strongest wind gusts (mph) as of Friday afternoon:

16  Port Allen – E
23  Kii, Oahu – ENE
28  Makapulapai, Molokai – E
18  Lanai 1, Lanai – NE 
39  Na Kula, Maui – SE
35  South Point, Big Island – ENE

 

Hawaii’s Mountains – Here’s a link to the live webcams on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii, and atop the Haleakala Crater (~10,023 feet) 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

An upper level low with a cold front northwest 

 

https://www.weather.gov/images/hfo/satellite/Hawaii_IR_loop.gif

Higher level clouds moving by to the north

 

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 

 

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

 

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Friday comments:  I’m here at home in upper Kula, Maui

It’s mostly clear with a few clouds here in Maui County early this morning, with a very chilly low temperature of 48 degrees at my place, with the relative humidity 74 percent.

Weather Wit of the day: Weatherman’s Greeting – “Good morning, possubky”

>>> Highest Temperature Thursday, December 25, 2025 – 88 near Dunlap, TX
>>> Lowest Temperature Friday, December 26, 2025 – minus 17 at Saranac Lake, NY

 

Hawaii’s Broad Brush Weather Overview: Trades will continue through much of the morning and gradually decrease thereafter, veering southeastward. A relatively dry and stable air mass will continue to support only light showers focused windward and mountains through the middle of next week.

Late this weekend, a front will move toward the state from the northwest, stalling just outside of Kauai before retrograding back west. By mid-week, an upper-level trough moves into the vicinity, increasing instability and producing higher chances for heavy showers ahead of trades rebuilding to ring in the New Year.

Hawaii’s Weather Details: An elongated area of high pressure and associated ridging extending southwest from the high toward the Hawaiian Islands, will help maintain trades through today. Flanking areas of low pressure on either end of the high remain intact just east of the Dateline, and right along the west coast of the U.S., respectively.

Stability is also maintained, limiting any shower activity to mainly windward and mountain areas across the state, with the only exception being the Kona region of the Big Island in the last 24 hours. This stability can visually be seen on the latest upper-air balloon soundings from Lihue and Hilo, depicting a temperature inversion holding steady between 5,500 and 6,500 feet today.

As all the aforementioned surface features meander eastward, the area of high pressure will lessen the local pressure gradient across the island, leading to trades weakening and veering southeastward. Meanwhile, latest model guidance is in good agreement that the area of low pressure to the northwest will make its way up to the Gulf of Alaska, escorted by a weak cold front advancing toward, but stalling short of, Kauai late Saturday. Guidance continues to depict this front will stall just northwest of Kauai through Sunday, yet close enough where Kauai could see a noticeable increase in shower activity, before retrograding back west on Monday.

Toward the end of the year leading into New Year’s Day, model guidance showcases a strong, zonal jet stream west of the Hawaiian Islands splitting, amplifying an upper-level trough and the subtropical jet stream that feeds into the islands. There continues to be a discrepancy between guidance, however, on the strength of the aforementioned trough, leaving quite a bit of uncertainty in the forecast for the days leading into the New Year.

The American model (GFS)’s scenario results in increased instability across the state and heavy rainfall potential. Total Precipitable Water anomaly shows a standard deviation of 1 to 2 times above normal precipitation across the Hawaiian Islands. Conversely, the European model (ECMWF) doesn’t amplify the upper-level trough as much, and standard deviations are closer to normal. Regardless, shower activity is anticipated during this time, but how much at this time remains uncertain.

That said, what models do seem to agree on is high pressure at the surface developing just north of the state, which leads to a higher confidence that trades will rebuild on Tuesday leading into the New Year, helping to blow away any firework’s smoke. At this time, the uncertain pattern seems to favor unstable and wet trades that would place the greatest potential for heavy rainfall over windward and mountain areas.

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Vog map animation / 8-Day Precipitation model

https://www.weather.gov/images/hfo/graphics/npac.gif 

 

Hawaii’s Marine Environment: A low pressure system far north of the islands will drive a trailing shallow cold front into the northwestern offshore waters, where it will stall west of Kauai this weekend. This approaching front will push the surface ridge over the Hawaii area producing gentle to moderate easterly to southeasterly winds across the state through Monday. Easterly trade winds will strengthen again into the moderate to fresh range from next Tuesday to Wednesday, as a high pressure system builds in from the north. The Small Craft Advisory remains in effect for windier waters and channels surrounding Maui and the Big Island.

The current moderate, medium period, north-northeast (010-030 degrees) swell will hold. This swell continues to boost surf heights along north facing shores. This swell will decline rapidly from midnight tonight into Saturday. A Marine Weather Statement was extended in time for moderate harbor surges at Kahului and Hilo. A combination of the declining north-northeast swell and a small, long period west- northwest swell will keep smaller surf in the forecast this weekend. The next large medium to long period north-northwest (330-350 degree) swell is expected to arrive in the islands by early Monday morning, peaking at solid High Surf Advisory levels along north and west facing shores from Monday night through Wednesday morning.

Small rough and choppy surf along east facing shores will gradually decline as trade winds ease this weekend. Surf along south facing shores will remain very small through the week.

 

Maui: The Pacific Island Where the Beaches Come in Almost Every Color



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Caribbean Sea:  There are no active tropical cyclones

Gulf of America:  There are no active tropical cyclones

 

Northeastern Pacific:  There are no active tropical cyclones

North Central Pacific: There are no active tropical cyclones

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

 

Northwest Pacific Ocean:  There are no active tropical cyclones

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean:  There are no active tropical cyclones 

South Indian Ocean:

Tropical Cyclone 09S (Grant)…is located approximately 323 NM west of the Cocos Islands

https://www.metoc.navy.mil/jtwc/products/sh0926.gif

Arabian Sea: There are no active tropical cyclones

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

 

>>> Here’s a link to the Pacific Disaster Center’s (PDC Global) Weather Wall website

 

Interesting: Researchers Tackle AI’s Energy Problem With a Greener Fix

Artificial intelligence is getting more powerful – but it’s also racking up a massive energy bill. Some estimate that one maximum-length ChatGPT query can use about twice as much power as an average U.S. home does in one minute. Multiply that by billions of queries and the enormous training AI models require, and the energy impact is staggering.

As researchers are racing to find greener ways to power AI, a new study led by Tianyi Chen, associate professor of electrical and computer engineering at Cornell Tech, with collaborators from IBM and Rensselaer Polytechnic Institute, explores a promising solution: analog in-memory computing (AIMC), utilizing analog chips.

Unlike traditional architectures, which constantly move data back and forth between memory and processors, AIMC stores and processes data in a single location. “This leverages physics to perform the math calculation instantly without moving the data, potentially slashing power consumption by 1,000 times and making the next generation of AI sustainable,” said Chen, who is also associate professor at Cornell Engineering.

Read more at: Cornell University