Glenn James

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

 

The latest update to this website was at 840pm Thursday evening HST


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

2.25  Waimea Tank, Kauai
9.83  Kamananui Stream, Oahu
0.87  Puu Alii, Molokai
0.17  Lanai City, Lanai
1.34  Summit, Maui
2.28  Kapapala, Big Island


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

09  Nawiliwili, Kauai – SW
23  Palehua, Oahu – SE
31  Molokai AP, Molokai – SSE
39  Kahului AP, Maui – SW
28  Kona AP, Big Island – SSW


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 (currently out of service). 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

A low pressure system to the north-northwest…thunderstorms far south


https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20262812150-20262820540-GOES18-ABI-HI-14-600x600.gif

Variable clouds over the island chain…well developed cumulus clouds southwest 

 

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

Localized Showers…some are heavy  

 

https://www.weather.gov/wwamap/png/hfo.png

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 Thursday comments:  I’m at home here in upper Kula, Maui, Hawaii

436am, it’s clear to partly cloudy here at my place, the low temperature 60 degrees, relative humidity is 83%…with near calm winds

446pm, sunny to partly sunny here on Maui, there were a few times that I thought we might get a shower, although they never arrived where I was.

625pm, from here at my place, looking down towards Kihei and Wailea, it appears to be showering…and I’m hoping that that moisture makes it up here to Kula!

830pm, partly cloudy and calm here at my place, with a relatively warm 66.3 degrees.


Hawaii’s Weather Highlights
…as of Thursday evening:
Showers will decrease in coverage and intensity tonight into Friday. After southeast winds Friday, trades will build back in this weekend and extend well into next week. This will be a relatively dry trade pattern. However, windward and mauka areas will still see occasional showers.

Weather Narrative…as of Thursday evening: Radar showed showers, some heavy, over Oahu and Molokai, with less intense showers over the other islands. Satellite showed partly to mostly cloudy skies. Winds were gusty and generally out of the south, with the strongest gusts occurring where nearby showers were falling (such as Kahului and on Molokai).

An upper level low to our northwest has been helping to bring heavy rain to parts of the state the past 24 hours. Coupled with an area of enhanced moisture drawn northward from the tropics, flash flooding was seen on both Kauai and Oahu. The event ended last night in Kauai, as dry air moved in from the southwest. This dry air has now reached Oahu, and heavy rain will taper down over the next few hours. Scattered to numerous light showers are still expected overnight, however.

The upper level low is forecast to slowly fill and remain nearly stationary through Sunday, before weakening and moving off to the northeast early next week. With the low still nearby and not weakened sufficiently yet, showers remain in the forecast but decrease in intensity and coverage Friday into early Saturday.

Winds will come out of the southeast during this period. A surface high will build to our northeast this weekend, and will help bring trades back. Even though this trade pattern will be relatively dry, windward and mauka areas will still see occasional showers, as areas with slightly more moisture move through periodically. Models are hinting at one of these areas moving through in the next Tuesday/Wednesday time frame.

Fire Weather:  Continued showers and a humid airmass will be with us tonight. The chance for widespread rainfall will diminish on Friday while humid and light southeast winds prevail. Light to moderate easterly trade winds are expected this weekend and next week. The inversion has been wiped out and will redevelop as trades return this weekend.

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 Thursday evening: A low pressure system to the north will result in moderate south to southeast winds and enhanced showers across the state into Friday. Weak trades may nose in from the east this weekend and early next week, but a trough will remain west of the area keeping winds fairly light across the western half of the state.

Moderate south swell will continue into next week with a long period reinforcement arriving Saturday. Surf along south facing shores will remain just below advisory levels during this time before declining by the middle of next week.

Moderate surf is also expected along north and west facing shores through Friday and declining through the weekend. A slightly larger swell will arrive around Tuesday, boosting north shore surf but staying below advisory levels. West facing shores will be impacted by both the northwest and south swells, but surf should stay below advisory levels. Surf along east facing shores will remain small as local winds remain fairly weak.

 

>>> Highest Temperature Thursday, October 8, 2026 – 110 degrees near Martinez Lake, AZ


>>>
Lowest Temperature Thursday, October 8, 2026 – 21 degrees near Bynum, MT

 

Embrace Rainy Days on Kauai With These Activities


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:

Tropical Cyclone 09L (Isaias)…is located about 230 miles south of the mouth of the Mississippi River

BOTH NOAA AND AIR FORCE HURRICANE HUNTERS FLYING INSIDE ISAIAS …STORM SURGE AND HURRICANE WARNINGS REMAIN IN EFFECT

According to the NHC advisory number 10A 

Isaias is moving toward the north-northeast near 14 mph (22 km/h). A turn toward the north is expected later today. On the forecast track, Isaias is expected to approach the U.S. northern Gulf Coast later today and make landfall within the warning area tonight or early Saturday. Maximum sustained winds remain near 105 mph (165 km/h) with higher gusts. Isaias could briefly become a major hurricane later today. Although some weakening is forecast thereafter, Isaias will remain a dangerous hurricane as it approaches the northern Gulf Coast tonight. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 125 miles (205 km). The estimated minimum central pressure is 972 mb (28.71 inches) based on Air Force and NOAA dropsonde data.

cone graphic

 

Northeast Pacific

Tropical cyclone 18E (Rachel) is located about 995 miles west of the southern tip of Baja CA

RACHEL EXPECTED TO TURN NORTHEASTWARD LATER TONIGHT

According to the NHC advisory number 48 

Rachel is moving toward the west-northwest near 6 mph (9 km/h). A turn to the northeast is forecast to occur overnight tonight, along with an increase in forward speed thereafter. Maximum sustained winds have decreased to 60 mph (95 km/h) with higher gusts. Some weakening is forecast during the next 48 hours, followed by a steady intensity thereafter until landfall. Tropical-storm-force winds extend outward up to 90 miles (150 km) from the center. The estimated minimum central pressure is 990 mb (29.24 inches).

cone graphic

 

Tropical cyclone (Simon) is located about 220 miles south of Manzanillo, Mexico

SIMON SLOWING DOWN AND MOVING NORTHWESTWARD…EXPECTED TO BECOME A DANGEROUS MAJOR HURRICANE

According to the NHC advisory number 7A 

Simon is moving toward the northwest near 5 mph (7 km/h). A turn to the north is forecast by early Saturday. On the forecast track, the core of Simon is expected to approach the coast of southwestern and west-central Mexico on Saturday. Maximum sustained winds are near 75 mph (120 km/h) with higher gusts. Rapid intensification is forecast, and Simon is expected to become a very dangerous category 4 hurricane before it reaches the coast of Mexico. Hurricane-force winds extend outward up to 15 miles (30 km) from the center and tropical-storm-force winds extend outward up to 90 miles (150 km). The estimated minimum central pressure is 985 mb (29.09 inches).

 

>>> South of Guatemala:

An area of low pressure is forecast to form south of the coast of Guatemala early next week. Environmental conditions appear conducive for some gradual development of this system thereafter, and a tropical depression could form as it moves generally west-northwestward at around 10 mph.

* Formation chance through 48 hours…near…0 percent
* Formation chance through 7 days…medium…60 percent

 

Central North Pacific: There are no active tropical cyclones

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

 

Northwest Pacific Ocean:

Tropical Cyclone 15E (Nolo) is located about 680 NM southeast of Tokyo, Japan

https://www.metoc.navy.mil/jtwc/products/ep1526.gif

 

Tropical Cyclone 27W(Koguma)…is located approximately 648 NM east-northeast of Saipan

https://www.metoc.navy.mil/jtwc/products/wp2726.gif

 

Southwest Pacific Ocean: There are no active tropical cyclones

North and South Indian Oceans / Arabian Sea: There are no active tropical cyclones

 

https://www.metoc.navy.mil/jtwc/products/abpwsair.jpg

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



Interesting: 
Cartilage Can’t Heal Well – But That May Change

New scaffolds, drugs and imaging to repair joints and prevent arthritis.

Running, jumping, throwing or typing. All involve the vigorous movement of muscles, tendons and bone through joints. But there’s a hidden player: articular cartilage. This tissue that lines joints is one of the slipperiest surfaces around, and cartilage on cartilage generates less friction than ice on ice.

Without it, joints grind and bone wears away or deforms, making simple movement — like stepping up stairs or raising an arm to reach a glass on a high shelf — painful.

But cartilage is relatively inert. No blood vessels provide nutrients, no true stem cells have been definitively identified and few immune cells patrol healthy joints. As a result, cartilage has little capacity to regrow once it’s been lost. This leaves tens of millions of Americans struggling with chronic joint pain (largely due to arthritis), limited mobility and no good treatments.

Read More: Stanford Medicine