The latest update to this website was at 101pm Sunday (HST)

 

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

0.72  Mount Waialeale, Kauai
2.34  St. Stephens, Oahu
0.06  Honolimaloo , Molokai
0.02  Lanai City, Lanai
0.82  Keokea, Maui
0.91  Puho CS, Big Island

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

20  Waimea Heights, Kauai – ESE
23  Oahu Forest NWR, Oahu – SE
32  Honolimaloo, Molokai – ENE
36  Lanai 1, Lanai – SE 
44  Na Kula, Maui – ESE
37  Puu Mali, Big Island – ESE

 

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

 The recent cold front is now a diffuse trough of low pressure to the west

 

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

Clear to partly cloudy…with high and middle level clouds to the west

 

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…not many 

 

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

 

~~~ Hawaii Weather Narrative ~~~

 

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

It’s clear to partly cloudy here in Maui County early this morning, with a low temperature of 54.5 degrees at my place, with the relative humidity 80 percent.

1056am, it’s clear and sunny here in Maui County, although there’s still a fair amount of vog, which I trust will be blown away as the trade winds get going a bit more today.

103pm, almost totally clear here on Maui, and the trade winds are helping to ventilate whatever vog there is in the air.

Weather Wit of the day: It looks like we’re in for a long, tough winter. I just saw a squirrel in my backyard burying canned goods

>>> Highest Temperature Saturday, December 20, 2025 – 92 near Hildlgo, TX
>>> Lowest Temperature Sunday, December 21, 2025 – minus 15 near Goodridge, MN

Today is the Winter Solstice…the shortest day and longest night of the year

 

Hawaii’s Broad Brush Weather Overview: A strong, dominating surface high builds north of the Hawaiian Islands, resulting in trades making a return through much of the upcoming week. Trades will strengthen into moderate to breezy conditions Monday and Tuesday, easing thereafter as the aforementioned surface high begins to shift eastward and weakens. Drier trades continue through the remainder of the week ahead of a possible frontal boundary toward the end of the outlook period.

Hawaii’s Weather Details: A strong, dominating surface high continues to build in the central Pacific, leading to the local pressure gradient tightening. This will allow trades to return to the forecast and overrun the stationary front just north of the islands. As the front dissipates, it will also open the door for any remnant moisture associated with it to advance southward toward the islands, and may bring additional showers to the western islands through the early portion of the new week, namely Monday and Tuesday.

In fact, model total precipitable water normalized anomalies portray a positive, wetter than average moisture content across the islands during this time. Otherwise, trade showers and clouds will focus predominately across windward and mountain areas.

Latest model guidance suggests that the surface high will begin to shift eastward and weaken by mid-week, weakening the local pressure gradient, allowing trades to ease and veer more southeasterly. Drier trades are expected Wednesday as a more stable airmass propagates across the islands, persisting through the reminder of the week.

Additionally, model guidance remains in reasonable agreement, proposing another frontal boundary just west of the islands toward the end of the outlook period. Further analysis will be necessary to determine the timing and impacts of this front, as confidence remains too low for now.

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: The high pressure ridge will finally build back into the islands from the north. Expect a return to strengthening easterly trade winds over the next few days. Clouds and showers will diminish as this stable ridge builds in over the Hawaii region. Increasing trade winds have triggered the issuance of a Small Craft Advisory for the typical windier waters and channels around Maui and the Big Island lasting at least into Tuesday.

The current overlapping moderate, medium period north (345-010 degrees) swells will gradually decline through Tuesday. A similarly sized north-northeast swell is expected to arrive late Wednesday and persist through Friday, with the largest swells favoring the eastern end of the island chain. Periods of additional smaller northwest (310 to 330 degree) swell energy will overlap this larger northerly swell, increasing surf heights at shores exposed to northwest swell directions.

For east facing shores, wrapping north swell will produce moderate surf along exposed coastlines, while sheltered areas will experience smaller surf. Returning trade winds will produce building surf on Monday, with rough conditions above seasonal averages possible from Monday night into Wednesday. As trade winds over and upwind of the islands ease during the second half of the week. Surf along south facing shores will remain very small, with fleeting background south and southwest swell energy through the week.

 

Beautiful Pictures Of Hawaii To Brighten Dark Rooms



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…is located approximately 369 NM east 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: Looks can be deceiving. This smart fungus could beat meat at its own game

Looks can be deceiving. This smart fungus could beat meat at its own game.

The popular fungus-based meat mimic behind vegan products like Quorn has just received an upgrade: researchers have tweaked its genes to make this fungus produce vast amounts more protein, using considerably reduced resources.

The newly-formulated fungus—aka mycoprotein—not only has a vastly smaller footprint than meat, but is also less impactful than cultured meat.

Called Fusarium venenatum, the popular ingredient is known for having high protein levels and a similar texture to animal protein, achieved by fermenting the spindly, filamentous fungi in a glucose-rich medium. However, for all its successes, there are two ways the researchers on the new study felt this foodstuff could be improved: its thick cell structure, which is hard on human digestion; and its surprising resource intensity (cultivation requires large amounts of sugar and electricity).

Using the gene-editing technology known as CRISPR/Cas9, the researchers knocked out two genes in particular, which are associated with enzymes that control aspects of the fungi’s metabolism, and also its chitin levels, a key ingredient in building tough cell walls.

With those genes and their associated enzymes out of the picture, the researchers observed as their theory become reality: their engineered mycoprotein began to grow differently, depending on less glucose for its development, and packing less chitin into its cells.

That was proof of principle that the researchers could engineer a new, more digestible, less hungry fungus strain, which they called FCPD. In fact when they compared their modified strain with the regular mycoprotein, they found it consumed 44% less glucose during fermentation, yet increased the protein production rate by a striking 88.4%.

Read More at: Anthropocene