The latest update to this website was at 532am Saturday (HST)

 

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

2.08  Mount Waialeale, Kauai
0.69  Tunnel RG, Oahu
0.13  Puu Alii, Molokai
0.01  Lanai AP, Lanai
0.16  Kepuni, Maui
0.59  Honolii Stream, Big Island

The following numbers represent the strongest wind gusts (mph) as of Saturday morning:

18  Port Allen, Kauai
25  Oahu Forest NWR, Oahu
25  Molokai AP, Molokai
22  Lanai 1, Lanai 
23  Na Kula, Maui
24  South Point, Big Island

 

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

Cold front northwest…thunderstorms south 

 

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

 Variable low clouds over the islands…higher clouds moving over us from 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 

 

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

 

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Saturday comments:  I’m here in Corte Madera (Marin County, CA) at my friend Linda’s place

It’s clear early this morning…with a very chilly low temperature of 35 degrees.

Weather Wit of the day: Aviation Forecast – “The rain falls mainly on the plane”

Interesting web blog: Mauka Showers…Collecting Rainfall Data – The Old School Way

>>> Highest Temperature Friday, November 21, 2025 – 94 at La Puerta, Texas
>>> Lowest Temperature Saturday, November 22, 2025 – 3 at Peter Sinks, Utah

 

Hawaii’s Broad Brush Weather Overview: Light to moderate trades persist through the weekend, easing thereafter for the remainder of the outlook period. Showers will remain predominately over windward and mountain areas.

An upper-level trough moves into the area Sunday and may enhance shower coverage to leeward and interior terrain. Weather will trend wetter as the new week progresses, as weak troughs north of the Hawaiian Islands draw up moisture laden southerly air across the state.

Hawaii’s Weather Details: Broad areas of high pressure reside northeast of the islands, and will help produce a pressure gradient strong enough to maintain light to moderate trades through this weekend. The trades gradually ease thereafter, persisting through the remainder of the outlook period, sustaining a typical windward and mountain shower pattern.

Latest model guidance remains in strong agreement depicting a quick moving upper-level trough propagating in the vicinity of the area Sunday, bringing a brief period of instability. While this does not appear to have a significant impact to the Hawaiian weather, only producing some enhanced showers within the offshore northeast of the islands. However, under a weakened trade regime, it may trigger a few afternoon showers across more leeward and interior terrain, as well as increase cloud coverage throughout the day.

Weak high pressure swiftly builds in the wake of the quick moving trough, providing some sort of stability and maintaining trades across the islands. Apart from subtle fluctuations, this will be the general trend through the first half of next week. Model guidance begins to show some heartburn thereafter, with several discrepancies between the models related to the potential for another upper-level trough descending onto the islands around Thanksgiving Day.

Fire weather:  Critical fire weather conditions are not expected through the forecast period. Relative humidity levels decrease throughout the period, however, wind speeds remain below critical fire weather thresholds. Temperature inversion heights range from 6,000 to 7,000 feet.

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: High pressure far to the northeast will weaken this weekend as a front also weakens north of the local waters. Fresh to locally strong trade winds will persist before gradually easing going forward. A new high pressure building in north of the waters Sunday will continue to move east, and keep trade winds in the gentle to moderate range Sunday into next week. Another front moving across the north Pacific next week will push a ridge near the islands and keep the gentle to moderate trade winds through the forecast period.

The current northwest swell will maintain surf at moderate levels along north and west facing shores. A new northwest swell is expected to build in and peak tonight into Sunday, then decline through early next week. A potentially larger northwest swell is expected around the middle of next week.

As trade winds slowly weaken, choppy surf along east facing shores will decline into early next week. Surf looks to remain tiny to small through the forecast period with tiny background southerly energy.



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Tropical cyclone formation is not expected during the next 7-days.

Caribbean Sea:  There are no active tropical cyclones

Tropical cyclone formation is not expected during the next 7-days.

Gulf of America:  There are no active tropical cyclones

Tropical cyclone formation is not expected during the next 7-days.

 

Northeastern Pacific:  There are no active tropical cyclones

Tropical cyclone formation is not expected during the next 7 days.

North Central Pacific: There are no active tropical cyclones

Tropical cyclone formation is not expected during the next 7 days.

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 05S (Fina)…is located 30 NM northwest of Darwin, Australia

https://www.metoc.navy.mil/jtwc/products/sh0526.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: This UW-Madison Spinoff is Making Environmentally-Friendly Cement. The Secret Ingredient is Pollution

Taken individually, coal ash and excess carbon dioxide are harmful pollutants. Combined in just the right way, they form a durable, inexpensive, and environmentally friendly building material.

University of Wisconsin–Madison spinoff Alithic is leveraging this unique formula to turn waste streams from liabilities into profits, producing a key ingredient of concrete, the most abundant manufactured product in the world.

Based on a discovery by engineering professor Bu Wang, Alithic uses chemical reactions to pull carbon dioxide from the air and mix it with industrial wastes like coal ash, generating a mineral product — known as supplementary cementitious material, or SCM — that can be substituted for traditional Portland cement, one of the largest sources of greenhouse gas emissions.

Read more at: University of Wisconsin–Madison