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

 

The latest update to this website was at 452am Tuesday morning HST


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

0.22  Kilohana, Kauai
0.01  Waipio, Oahu
0.01  Puu Alii, Molokai
0.00  Lanai
0.24  West Wailuaiki, Maui
0.27  Pahoa, Big Island


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

07  Waimea Heights, Kauai – NE
10  Kaluanui, Oahu – NW
10  Anapuka, Molokai – NE
13  Lanai 1, Lanai – NE
21  Nene Nest, Maui – NNE
20  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.


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Big Blue…click twice for largest version

 

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 Multi-layered clouds…with thunderstorms in the deeper tropics

 

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Thunderstorms southwest

 

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Localized Showers 

 

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




~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Tuesday comments:  I’m at my friend Bob’s here in Bend, Oregon on a working vacation.

423am HST, it’s partly cloudy here in Bend, Oregon, the low temperature was 35.5 degrees…with a light breeze

 

Hawaii’s Weather Highlights…as of Tuesday morning: Chances for heavy showers will increase today as a trough or will pass over the island chain through Wednesday night. The trough will bring the threat of heavy flooding rainfall and thunderstorms before weakening Thursday or Friday, though humid conditions with a chance of heavy showers may linger. Trade winds may briefly redevelop Saturday, followed by stronger northeast winds Sunday.

Weather Narrative…as of Tuesday morning: Clouds continue moving overhead from the southwest along with scattered showers. Winds on the Big Island summits have come down enough that the Wind Advisory was cancelled. However, these winds are expected to increase later today and will likely support another Wind Advisory.

Remnants of TC Olana will remain far to the west and not directly impact the area. A surface trough originating in the western Pacific extends through and several hundred miles east of the what remains of Olana. An upper level trough,well west of Kauai will advance eastward, tapping moisture aloft from thunderstorms along the surface trough, and sending increased high clouds overhead.

Chances for heavy rainfall and thunderstorms will increase today. The upper level trough will drift closer to the state. Proximity to the jet stream aloft will erode this trough and pull the surface level trough toward the islands. This will spread the deep tropical airmass overhead. Chances for widespread rain should remain relatively low in the morning as the Flood Watch for all islands goes into effect, but as moisture increases later in the day, the flood threat will slowly increase.

The flood threat will be greatest this evening through Wednesday night. The jet stream aloft will provide its strongest ascent over the region, pulling the surface trough over the state, and possibly generating an elongated surface low near or over the islands. A deep tropical airmass will accompany this system, and provide ample fuel for heavy rainfall. Guidance shows the surface trough stretching across the central portion of the island chain, favoring Oahu and Maui County for the greatest rainfall totals.

However, all islands will have a heavy rain threat, and slow- moving cells anchoring on terrain could drop very heavy rainfall in a short period of time, leading to flash flooding anywhere. If a surface low does form along the trough, breezy east winds could form just north of the low, while gusty southerly winds to the south. To further complicate the scenario, strong thunderstorms with localized damaging gusty winds may develop along and just south of the surface trough Wednesday.

The threat of heavy rainfall will diminish Thursday and Friday. The jet stream aloft will lift to the north, and weak upper level anticyclonic flow will develop, ceasing the large scale ascent over the islands. A weak surface trough and ample moisture will likely linger, providing some chance for spotty heavy showers that could require the Flood Watch to be extended.

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 is moving in, and as the day progresses the threat for heavy rain and thunderstorms increases and lasts through at least Wednesday night and possibly into Thursday. As a result, fire weather concerns will be low through the next several days. Inversion heights have eroded near the Big Island, and sit near 5,000 feet near Kauai.

 

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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 Tuesday morning: A surface low well northeast of the Hawaiian Islands will remain nearly stationary as it weakens through Wednesday. A surface trough to the southwest of the islands moves into the offshore waters today. This feature will bring heavy showers with embedded thunderstorms over the next several days. While large scale wind flow will remain quite weak, northeasterly winds on the north side of the trough may reach fresh or locally strong levels, most likely in the central waters. Additionally, any thunderstorms that develop may produce localized erratic and gusty winds.

A moderate, long-period northwest swell will peak today, bringing surf to near advisory levels along north and exposed west-facing shores. This swell will begin to decline late today and fade by Thursday. A small, short-period north-northeast swell will maintain through much of the week, and may even become moderate for some time during the latter half of the week, with the arrival of reinforcing energy from the northeast. A moderate, long-period northwest swell is forecast to arrive this weekend, with potential to reach advisory levels by Sunday.

Overlapping south-southwest swells will keep surf along south-facing shores near seasonal average today. A slightly larger south swell arriving tonight pushes surf above seasonal average for Wednesday. Additional south energy may prolong near to above average surf for south-facing shores on Thursday and Friday as well.

Surf along most east-facing shores will be small through the first half of the week, but areas exposed to wrapping northerly swells will experience periods of moderate surf. East-facing shores should also see a bump in surf with the northeast swell during the latter half of this week.

 

>>> Highest Temperature Monday, October 26, 2026 – 91 degrees near Zapata, TX


>>> Lowest Temperature Monday, October 26, 2026 – 15 degrees at Springdale, MT

 

A brief clearing in the rain transforms the island of Kauai into a dramatic show of light and shadow.


World-wide Tropical Cyclone Activity

 



>>> 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 cyclones

Gulf of America: There are no active tropical cyclones

 

Northeast Pacific:

Tropical Cyclone 22E (Vance)…is located 290 miles southwest of Manzanillo, Mexico

VANCE IS A POORLY ORGANIZED TROPICAL STORM

According to the NHC advisory number 25

Vance is moving toward the northwest near 8 mph. A northwestward motion is expected to continue today, followed by a gradual turn toward the north through midweek. Maximum sustained winds have decreased to near 40 mph with higher gusts. Little change in strength is forecast during the next couple of days, and Vance could become a post-tropical cyclone during this time if it is unable to sustain organized convection. Tropical-storm-force winds extend outward up to 175 miles primarily to the southeast of the center. The estimated minimum central pressure is 1003 mb (29.62 inches).

cone graphic

 

Central North Pacific: There are no active tropical cyclones

 

Northwest Pacific Ocean:

Tropical Cyclone 30W (In-fa)…is located approximately 407 NM southwest of Wake Island

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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 497 NM southwest of Kolkata, India

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



Interesting:  Greenland’s Camp Century Was Ice-Free When Summers Were a Few Degrees Warmer

UB-led study of ancient sediment offers new insights into ice sheet retreat at the former Cold War outpost.

The site of a former U.S. military base in Greenland was ice-free at a time when summers were a few degrees warmer than today, according to a new University at Buffalo-led study of ancient sediment recovered from beneath the site in the 1960s.

Researchers found that summer temperatures at Camp Century — where the U.S. Army pursued a secret Cold War plan to hide nuclear missiles beneath the ice — were 4.7 degrees Celsius (8.5 degrees Fahrenheit) warmer than modern summers during an ice-free period approximately 416,000 years ago.

For the site to have been ice-free, the Greenland Ice Sheet would have had to retreat more than 60 miles from its present-day edge in that region.

Read More: University at Buffalo

Image: Tundra vegetation is seen on the Greenland landscape in this photo from 2012. A University at Buffalo-led study found that summer temperatures at Camp Century on Greenland were 4.7 degrees Celsisus higher during an ice-free period 416,000 years ago.