Glenn James

Hawaii Weather Today
Creator, Author, and Administrator for over 30+ years 

 

The latest update to this website was 523pm Wednesday evening HST


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

0.22  N Wailua Ditch, Kauai
3.89  Maunawili, Oahu
4.82  Honolimaloo, Molokai
1.25  Lanai City, Lanai
3.68  Kahakuloa, Maui
1.45  Waiakea Uka, Big Island


The following numbers represent the strongest wind gusts (mph) Wednesday evening:

13  Port Allen, Kauai – SE
16  Honouliuli, Oahu – NE
09  Anapuka, Molokai – NE
14  Lanai 1, Lanai – NE
22  Nene Nest, Maui – SW
21  Mauna Loa Obs, Big Island


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

 Multi-layered clouds…with thunderstorms in the vicinity

 

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Considerable wet clouds over and around Hawaii

 

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

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Localized Showers…some heavy 

 

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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 Wednesday comments:  I’m at my friend Linda’s here in Corte Madera, CA on a working vacation.

145am HST, it’s clear to partly cloudy here in Bend, Oregon, the low temperature was 35 degrees…with a light breeze

1017am HST, it looks like Kauai will take a break from the showery weather, while the rest of the island chain will be off and on showery…some heavy.

3pm, HST, still some heavy duty rain showers out over the ocean, that are periodically moving over Maui County at the moment.

522pm HST, heavy rains continue to pound certain areas of the Island chain, which should continue through much of the night.

 

Hawaii’s Weather Highlights…as of Wednesday evening: The flood threat will continue through tonight for Oahu through the Big Island, as a surface trough shifts over the eastern half of the state in the midst of deep tropical moisture and modest instability. Conditions are expected to improve heading into Thursday, with moderate trade winds returning this weekend. A front is expected to sweep down the island chain Sunday and Sunday night, bringing breezy northeast winds and drier conditions through mid-week next week.

Weather Narrative…as of Wednesday evening: Radar and satellite imagery show an unsettled weather pattern across the state. There are currently three main focus areas for deep convection and heavier showers: the first is along a nearly stationary convergent boundary in the Kaiwi Channel, another is along a diffuse surface trough extending over the Maui County coastal waters from the southwest and bringing showers to the Kona and Kohala Districts of the Big Island, and the third is over the east and southeast facing slopes of the Big Island in the southeast flow.

Otherwise, light to moderate showers are setting up over the Koolau’s, which may become another focus. Overnight, the focus will remain on these convergent boundaries and along any areas where showers manage to anchor on the terrain. An upper level trough will pass eastward over the state, likely helping to enhance these areas of heavier showers, and then shifting them east of the island chain by Thursday.

Even while scattered to numerous showers are expected to continue across Oahu through the Big Island, where the deep tropical moisture remains concentrated along with weak surface convergence, rain rates should be manageable on Thursday. As such, the Flood Watch that goes through tonight will likely not be extended and has been trimmed back to remove Kauai and Niihau where drier air is filtering in.

Moderate trades will gradually fill in from west to east across the island chain Thursday through Friday, shifting the focus for showers over windward and mauka areas. The next pattern shift is on track for Sunday into Sunday night, when the models show a front moving down the island chain from the north, with breezy northeast winds and noticeably drier air filtering in behind it. These breezy trades and drier conditions are expected to last through mid-week next week.

Fire Weather: Fire weather concerns will be low through Saturday, due to a combination of deep tropical moisture helping to supply showers across the state and light to moderate winds. A front is expected to move down the island chain Sunday through Sunday night, bringing breezy northeast winds and drier conditions in its wake. As such, fire weather concerns will become moderate Sunday or Monday through mid-week next week.

 

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


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 Conditions…as of Wednesday evening: The end of a surface trough southwest of the islands extends into Maui County waters, and a broad weakening surface low centered roughly 900 nm northeast of the state is keeping the local pressure gradient somewhat weak. As a result, moderate easterly winds prevail north of the trough, with lighter southeasterly winds to the south and east of the trough. The trough will continue to build eastward over Maui County waters tonight and will provide a focus for scattered heavy showers and isolated thunderstorms, some of which could produce erratic localized wind gusts over gale force.

The trough will weaken near the Big Island Thursday, allowing building ridging to the north to drive moderate to fresh easterly winds over most waters, and southerly winds near Big Island. The trough will move south of the Big Island Friday, and moderate to locally fresh trades will prevail Friday night into the weekend. Stronger northeast winds will likely require a Small Craft Advisory late Sunday and Monday.

A small northwest swell will continue a slow decline through Thursday then fade on Friday, but a small, short-period north- northeast swell will maintain small surf along northern shores during the next few days. A larger, long-period northwest swell will arrive late Saturday and may push surf above the high surf advisory threshold Sunday. The swell will shift more northerly and may briefly build further on Monday before dropping Tuesday.

A series of overlapping south-southwest swells will maintain south shore surf above seasonal average through the weekend. Surf along south-facing shores will decline to around seasonal average early next week.

Surf along most east-facing shores will be dominated by wrapping north to north-northeast swell energy, producing periods of moderate surf. Strong northeast winds and a large, rough north-northeast swell are possible Sunday night and Monday.

 

>>> Highest Temperature Wednesday, October 28, 2026 – 93 degrees near Hildago, TX


>>>
Lowest Temperature Wednesday, October 28, 2026 – 9 degrees at Peter Sinks, UT

 

Hilo Weather - Everything You Need To Know


World-wide Tropical Cyclone Activity

 



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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:
There are no active tropical cyclones

 

Northeast Pacific:

Tropical Cyclone 22E (Vance)…is located 285 miles west-northwest of Manzanillo, Mexico

SHOWER AND THUNDERSTORM ACTIVITY REDEVELOPS NEAR VANCE

According to the NHC advisory number 31

The depression is moving toward the north-northeast near 13 mph. A turn to the north, followed by a decrease in forward speed, is expected over the next 24 hours. Maximum sustained winds are near 35 mph with higher gusts. Slight weakening is forecast to occur during the next day or so, and Vance is expected to become post-tropical within the next 24 hours, dissipating shortly thereafter. The estimated minimum central pressure is 1002 mb (29.59 inches). Recently there was a ocean drifter buoy that reported a minimum pressure of 1002 mb (29.59 inches) as Vance moved over its location.

cone graphic

 

Central North Pacific: There are no active tropical cyclones

 

Northwest Pacific Ocean:

Tropical Cyclone 30W (In-fa)…is located approximately 493 NM north of Oroluk

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Southwest Pacific Ocean: There are no active tropical cyclones

 

North and South Indian Oceans / Arabian Sea:  

North Indian Ocean

Tropical Cyclone 02B (Arnab)…is located approximately 527 NM southwest of Kolkata, India – Final Warning

https://www.metoc.navy.mil/jtwc/products/io0226.gif

 

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



Interesting: 
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Tools like Claude and ChatGPT can help researchers monitor ecosystems by finding and extracting data from observations made in nature by everyday people.

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A new study led by the University of Michigan has shown that artificial intelligence can help researchers identify comments with pertinent data, then extract and categorize the information to build robust datasets. In this proof-of-concept study, the team found evidence of non-native plant species creeping into ecosystems along America’s West Coast that might have been otherwise missed.

“The potential here is really big,” said Hengxing Zou, the lead author of the study who performed the work as a postdoctoral scholar in the U-M Institute for Global Change Biology. “The approach is really versatile and we have a lot of data out there basically waiting to be mined.”

Read More: University of Michigan