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

 

The latest update to this website was at 1226pm Tuesday afternoon HST


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

0.22  Kilohana, Kauai
0.01  Kamananui Stream, Oahu
0.20  Honolimaloo, Molokai
0.00  Lanai
0.36  West Wailuaiki, Maui
0.23  West Wailuaiki, Big Island


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

15  Port Allen, Kauai – SE
12  Kuaokala, Oahu – NE
14  Anapuka, Molokai – NE
12  Lanai 1, Lanai – NE
23  Na Kula, Maui – ESE
20  Kawaihae Rd, Big Island – WSW


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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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




~~~ 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

1227pm, we see a wet system approaching from the southwest of the islands…be prepared.

1230pm, here in Bend we had some light rain with a chilly temperature of 38 degrees this morning, I kept looking out the window for snow flakes, although no such luck.

 

Hawaii’s Weather Highlights…as of Tuesday afternoon: A trough moving over the island chain from the west will bring increased clouds and showers through tomorrow night. An accompanying upper level disturbance provides the instability for the chance for thunderstorms and locally heavy rainfall. Conditions are expected to improve Thursday or Friday, with trade winds returning by the weekend.

Weather Narrative…as of Tuesday afternoon: Clouds are spreading across the islands from the southwest. Satellite shows deeper layered clouds are about 40 miles to the southwest of the smaller islands, and are moving towards the islands. This area of moisture is moving a little faster than previous model runs indicated. Satellite derived precipitable water (PW) shows over 3 inches about 325 miles southwest of the islands. This is twice the normal PW for this time of year. The remnants of Olana remain about 1200 miles southwest of the islands, with a monsoon trough extending nearly 700 miles to the east of the remnants, and trough extending to the east and then northeast of that. The trough remains south of the islands, with some surface lows forming along the trough. The low of most concern was analyzed about 650 miles south-southwest of Oahu.

Satellite imagery shows a broad area of layered clouds with embedded thunderstorms near the low. This area corresponds with the elevated PW mentioned above. A north-northeast to south-southwest oriented upper level trough is about 825 miles west of Kauai, and is expected to move to the east over the next 24 hours, and will help to destabilize the airmass over the islands as the jet stream moves over the islands.

The Flood Watch is in effect, and continues through tomorrow night. As mentioned above, shower activity will increase today, with the rain moving in a bit faster than we thought 24 hours ago. By tonight, expecting widespread rain across the islands, with the highest rainfall totals expected to be focused over Maui County and Oahu. However, all islands remain under the Flood Watch, with the potential for thunderstorms and locally heavy rain. Slow moving cells may become anchored along the terrain of the islands, which could lead to flash flooding anywhere.

Breezy east winds could form just north of the low, while gusty southerly winds form to the south. Strong thunderstorms with localized damaging gusty winds may develop along and just south of the surface 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 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 afternoon: A surface low centered about 800 nm northeast of the islands will remain nearly stationary as it weakens through Wednesday. A strengthening surface trough to the southwest of the islands will move across the offshore waters today. This feature will bring heavy showers with embedded thunderstorms later today through at least Wednesday. 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 around Oahu and Maui County, where a Small Craft Advisory has been issued. Additionally, any thunderstorms that develop may produce localized erratic and gusty winds.

A moderate, long-period northwest swell will peak, producing surf around seasonal average 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 the week.

 

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


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

 

Heavy rain and storms move across Hawaii


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 cyclone:


Gulf of America: There are no active tropical cyclones

 

Northeast Pacific:

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

VANCE HOLDING STEADY OFFSHORE OF SOUTHWESTERN MEXICO

According to the NHC advisory number 26

Vance is moving toward the northwest near 9 mph. A gradual turn toward the north is expected through midweek. Maximum sustained winds are 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 70 miles from 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 870 NM east of Saipan

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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 535 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.