Glenn James

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

 

The latest update to this website was 1025am Wednesday morning HST


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

0.20  N Wailua Ditch, Kauai
2.88  Maunawili, Oahu
4.88  Honolimaloo, Molokai
1.07  Lanai City, Lanai
3.51  Kahakuloa, Maui
0.76  Kapapala Ranch, Big Island


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

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.

 

Hawaii’s Weather Highlights…as of Wednesday morning: The flooding threat will continue through tonight, 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.

Short Term Update: The trough axis has shifted eastward across Maui County this morning. Moderate to heavy showers with isolated thunderstorms will continue along this boundary through tonight, with lighter showers expected over the western end of the state, that will become more focused over windward and mauka areas as moderate trades fill in. However, short term model guidance points to another round of heavy rain moving over Maui County and possibly Oahu this afternoon.

While the threat of heavy rain continues overnight, it`s expected to taper off heading into Thursday as the atmosphere gradually stabilizes. So even while scattered to numerous showers are expected to continue as plentiful moisture remains over the state, along with weak surface convergence near the trough boundary, which is expected to stall between Maui and the Big Island, rain rates should be manageable.

Weather Narrative…as of Wednesday morning: Showers and a few isolated thunderstorms are ongoing across the state this morning. The bulk of the rain has stayed over the central portions of the state, with heavier rain moving towards Molokai, Lanai and Maui. Total rainfall ranges from a half inch to 2 inches over portions of Oahu. Slow moving cells may become anchored along the terrain of the islands, which could lead to flash flooding anywhere.

The Flood Watch will also continue and the possibility of extending it will be evaluated today. A few thunderstorms with localized damaging gusty winds may develop along the trough. The threat of heavy rainfall will diminish Thursday and Friday.

The jet stream aloft will lift to the north as the upper level trough moves to the west, and an upper level low develops along the trough. The weak surface trough, with ample moisture will likely linger, providing a chance for spotty heavy showers.

Friday night into Saturday a brief period of trade winds may return as the lingering moisture associated with the trough is pushed south of the islands. The GFS and ECMWF models are showing breezy northeast winds developing Sunday, as a shallow front moves near or over the state.

Fire Weather: Deep tropical moisture over the islands is bringing at times heavy rain and a few thunderstorms and is expected to last through tonight and possibly into Thursday. Fire weather concerns will be low through the next several days.

 

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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 morning: A surface trough stretches across Maui County waters this morning, and a broad weakening surface low centered roughly 950 nm northeast of the state is keeping the local pressure gradient somewhat weak. As a result, moderate easterly will prevail north of the trough with lighter southerly winds to the south of the trough, and the Small Craft Advisory has been cancelled. However, locally fresh winds are expected near the trough today, and isolated thunderstorms could produce erratic localized wind gusts over gale force.

The trough and possible low 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 Big Island Friday, and moderate to locally fresh trades will prevail Friday night into the weekend. Stronger northeast winds may develop late Sunday and Monday and require an SCA.

A small northwest swell will continue a slow decline through Thursday then fade on Friday, but a small, short-period north- northwest swell will maintain small surf along northern shores during the next several 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 continue through the weekend. The current swell is expected to produce surf above seasonal averages today, with an additional pulse late Thursday maintaining above average surf into Friday. Surf along south-facing shores will decline gradually this weekend into early next week.

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

 

>>> Highest Temperature Tuesday, October 27, 2026 – 91 degrees near Hildago, TX


>>>
Lowest Temperature Tuesday, October 27, 2026 – 14 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 320 miles west of Manzanillo, Mexico

VANCE REMAINS A HIGHLY SHEARED TROPICAL STORM

According to the NHC advisory number 29

Vance is moving toward the north-northwest near 10 mph (17 km/h). A turn toward the north and north-northeast is expected later today and tonight, with the center passing to the west of Islas Marias overnight. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Little change in strength is forecast today, followed by gradual weakening tonight through Friday. Vance is expected to become a post-tropical remnant low on Thursday. Tropical-storm-force winds extend outward up to 90 miles (150 km) from the center in the eastern semicircle. The estimated minimum central pressure is 1004 mb (29.65 inches).

cone graphic

 

Central North Pacific: There are no active tropical cyclones

 

Northwest Pacific Ocean:

Tropical Cyclone 30W (In-fa)…is located approximately 427 NM west-northwest of Enewetak

https://www.metoc.navy.mil/jtwc/products/wp3026.gif

 

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: 
How Nature Lovers Can Aid Ecology With an Assist From AI

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

Millions of people worldwide, likely without realizing it, are capturing rare and valuable data that can help researchers assess trends in ecosystem health. Such data, however, are hidden in an ocean of comments on free online platforms like eBird and iNaturalist used by birdwatchers and other nature enthusiasts.

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