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

 

The latest update to this website was at 6pm Wednesday evening HST


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

17.96  Mount Waialeale, Kauai!
4.08  Poamoho, Oahu
0.03  Honolimaloo, Molokai
0.00  Lanai
0.32  Kahikinui 1, Maui
0.35  Pali 2, Big Island


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

29  Lihue, Kauai – SSE
30  Kuaokala, Oahu – NE
17  Makaena, Molokai – SE
25  Na Kula, Maui – ESE
24  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

   Tropical Storm Nolo west of Hawaii 


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Variable clouds are present over the island chain 

 

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Localized Showers…heavy around Kauai and Oahu

 

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

424am, there’s some high cirrus clouds overhead here at my place, with the low temperature 58.5 degrees, relative humidity is 77%…with calm conditions

1206pm, just back from playing pickleball in Makawao, and it’s mostly cloudy here on Maui.

116pm, partly to mostly cloudy here on Maui…along with plenty of volcanic haze (Vog)

522pm, mostly cloudy, and earlier in the afternoon I got 15 drops, although despite the dark clouds…it’s remained dry.

6pm, cloudy and very voggy with these southeasterly winds coming up from the Big Island volcanic vents.


Hawaii’s Weather Highlights…as of Wednesday evening: The center of Tropical Storm Nolo will continue in the vicinity of Papahanaumokuakea Marine National Monument waters the next several days. Moisture content will remain elevated through the end of the week. Drier weather conditions expected into the weekend.

Weather Narrative…as of Wednesday evening: Cloudiness with showers, heavy at times, were observed across Kauai and Oahu. Showers moved from south to north through both islands, producing periods of moderate to heavy rainfall. By mid afternoon, most of the activity moved out of the islands. Rest of the state remained relatively dry, with few isolated showers from time to time.

This activity was associated with a moist south flow, induced by Tropical Storm Nolo`s circulation. Tropical Storm Nolo continues to move slowly near Papahanaumokuakea Marine National Monument waters, and will continue to do so for the next couple of days. The National Hurricane Center forecast brings tropical Storm Nolo back to hurricane status in 72 hours, but no impacts are expected across the state, as Nolo continues moving away from the area.

Although Nolo will continue moving slowly away from our coastal waters, deep tropical moisture will move across the region through at least Saturday afternoon. Chances for precipitation will continue, especially on Friday, as models are suggesting new bands of showers will move throughout the area.

In the long term, a high pressure system is expected to build northwest of the region, bringing dry weather conditions under a northeast wind flow.

Fire Weather:  Fire weather conditions will improve through the remainder of the week in response to higher southern moisture and moderate southeasterlies. Drier weather conditions and lower relative humidities are then expected by the weekend.

 

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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 evening: Moderate to fresh south to southeast winds will weaken slightly to moderate levels by Thursday as Tropical Storm Nolo slowly drifts westward away from the main Hawaiian Islands. Since winds and seas have decreased below advisory levels this afternoon, the Small Craft Advisory that was previously in effect for waters surrounding Kauai has been cancelled. East to northeast trades will fill back in across the waters this weekend.

The moderate, short to medium period west to southwest swell originating from Nolo will continue for Niihau and Kauai through Friday night. Additionally, a small background south swell continues for other islands. The next small, long period south swell energy will arrive either late Sunday or Monday.

Surf along other shores will remain small until moderate trades return late this weekend, providing a slight boost to east facing shores. Multiple rounds of tiny northwest swell energy will reach north and west facing shores this weekend into early next week as the storms tracking near the Aleutian Islands become increasingly active.

 

>>> Highest Temperature Wednesday, September 30, 2026 – 107 degrees at Death Valley, CA


>>> Lowest Temperature Wednesday, September 30, 2026 – 24 degrees at Foxpark, WY

 

Hawaii Landscape Photography | Tropical Island Art | Max Foster Photography


World-wide Tropical Cyclone Activity

 



>>> Here’s a link to the latest Pacific Disaster Center’s Weather Wall



Atlantic Ocean: 

Post-Tropical cyclone (Hanna) is located about 1230 miles east of Bermuda

HANNA BECOMES A REMNANT LOW PRESSURE AREA

According to the NHC advisory number 9

The post-tropical cyclone is moving toward the east near 5 mph (7 km/h). A turn toward the east-northeast is expected later today with an increase in forward speed on Thursday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. The remnant low should gradually weaken during the next couple of days. The estimated minimum central pressure is 1008 mb (29.77 inches).

cone graphic

 

Caribbean Sea: There are no active tropical cyclones


Gulf of America: There are no active tropical cyclones

 

Northeast Pacific

Tropical cyclone 18E (Rachel) is located about 270 miles south-southeast of Cabo San Lucas, Mexico

RACHEL GRADUALLY STRENGTHENING AS IT CONTINUES NORTHWESTWARD

According to the NHC advisory number 16 

Rachel is moving toward the northwest near 7 mph (11 km/h). A northwestward motion at a slower forward speed is expected during the next day or two, followed by a turn toward the west-northwest and west later this week. On the forecast track, the center of Rachel is expected to move away from mainland Mexico and pass south of the Baja California Peninsula on Thursday. Maximum sustained winds are near 90 mph (150 km/h) with higher gusts. Rachel could strengthen rapidly tonight and into Thursday and become a major hurricane within the next couple of days. Hurricane-force winds extend outward up to 35 miles (55 km) from the center and tropical-storm-force winds extend outward up to 150 miles (240 km). The estimated minimum central pressure is 975 mb (28.80 inches)

cone graphic

 

Tropical cyclone 19E is located about 1170 miles west-southwest of the southern tip of Baja CA

DEPRESSION BARELY A TROPICAL CYCLONE

According to the NHC advisory number 7 

The depression is moving toward the east-northeast near 14 mph (22 km/h) and an east to east-northeast motion is expected during the next day or so. Maximum sustained winds remain near 30 mph (45 km/h) with higher gusts. The depression could become a remnant low on Thursday before dissipating Thursday night or Friday. The estimated minimum central pressure is 1006 mb (29.71 inches).

cone graphic

 

>>> South of Southern Mexico:

An area of low pressure could form late this weekend or early next week south of the southern coast of Mexico. Thereafter, environmental conditions appear favorable for gradual development, and a tropical depression could form while the system moves slowly west-northwestward to northwestward.

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

 

Central North Pacific:

Tropical Cyclone 15E (Nolo) is located about 350 miles west of Lihue, Hawaii

NOLO EXPECTED TO INCREASE IN FORWARD SPEED AS IT MOVES JUST SOUTH OF THE PAPAHANAUMOKUAKEA MARINE NATIONAL MONUMENT

According to the NHC advisory number 42

Nolo is moving drifting toward the west near 1 mph (2 km/h). An increase in forward speed is expected over the next couple of days. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Some gradual strengthening is forecast over the next couple of days as Nolo moves westward away from the Papahanaumokuakea Marine National Monument. Tropical-storm-force winds extend outward up to 80 miles (130 km) from the center. The estimated minimum central pressure is 999 mb (29.50 inches).

cone graphic

 

Northwest Pacific Ocean:

Tropical Cyclone 25W (Surigae)…is located approximately 215 NM south-southwest of Yokosuka, Japan – Final Warning

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Tropical Cyclone 26W(Choi-Wan)…is located approximately 250 NM northeast of Andersen AFB

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Southwest Pacific Ocean: There are no active tropical cyclones

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

 

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



Interesting:  What Stalagmites Reveal About the Climate

Dominik Fleitmann, how did you come to study the climate using stalagmites?

It was through my doctoral research. Using stalagmites as climate archives is a relatively young field. Previously, we mainly knew this kind of approach from ice cores, tree rings, or lake sediments. But stalagmites also give us a very precise view into the past.

How far back have you been able to look?

We studied a stalagmite from Saudi Arabia that was 8 million years old. When we discovered it, our instruments were not yet capable of dating it that far back. That only became possible later.

What can you see in a stalagmite?

An enormous amount. For one thing, we can determine its age with a precision of up to about ten years. To do this, we use radioactive elements: uranium is incorporated into the stalagmite as it grows and gradually decays into thorium. We can measure this process and use it to determine the age with high precision.

Read More: University of Basel