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

 

The latest update to this website was at 1226am Tuesday morning HST


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

4.54  Mount Waialeale, Kauai
2.46  Poamoho RG 1, Oahu
0.25  Honolimaloo, Molokai
0.03  Lanai City, Lanai
0.82  West Wailuaiki, Maui
1.82  Honolii Stream, Big Island


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

23  Port Allen, Kauai – NE 
30  Kuaokala, Oahu – E
28  Makapulapai, Molokai – ENE
m   Lanai – m
27  Honoapiilani, Maui – NE
25  Lalamilo, Big Island – NE


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 (out of operation). 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 cyclone 01C (Lala) well west-southwest of Kauai

https://www.nhc.noaa.gov/storm_graphics/CP01/refresh/CP012026_5day_cone+png/150554_5day_cone.png

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20262300150-20262300940-GOES18-ABI-HI-14-600x600.gif 

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 

 

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

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 home here in upper Kula, Maui, Hawaii

1221am, after a 54 hour power outage, the power came back, and what a relief it is! Looking outside into the night, there’s thick fog with a temperature of 64.5 degrees, with the relative humidity 88 percent.

 

 

 

Hawaii’s Weather Highlights…as of Tuesday morning: Light showers are possible through tonight. Trade wind pattern returns Tuesday with windward and mountain showers much of this week. Precipitation chances increase Friday and Saturday for windward areas. Winds may veer southeasterly late in the week.

Short Term Update: A more seasonal trade wind shower pattern returns now. Expect relatively drier conditions for the first half of the week, with lighter winds and increased trade wind precipitation during the second half.

Weather Narrative..as of Tuesday morning: Scattered, light showers will diminish tonight. Over the past 12 hours an additional 0.20 to 0.60 inches of rain has fallen across the state, with some locally higher accumulations.

For the middle of the week, the atmosphere will gradually dry out in the wake of Tropical Storm Lala. Moderate strength winds will prevail for the first half of the week, becoming light by Thursday. The return of the trade winds will maintain scattered showers over windward and mountain locations, with isolated spill over into leeward areas.

For late Thursday through the weekend the trades will veer east-southeast, pulling additional moisture into the area. This will increase precipitable water values for Friday and Saturday. Due to the expected moisture increase, precipitation chances have been increased for Friday into Saturday, especially for windward areas. A subtle drying is expected on Sunday.

For early next week, there is quiet a bit of difference between the GFS and the ECMWF models. The GFS supports a wetter pattern with the ECMWF on the drier side. Current forecast maintains drier conditions, which may need adjusting in the coming days depending on how the pattern develops.

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 Tuesday morning: With Tropical Storm Lala now well west of the islands, fresh to locally strong easterly trade winds have prevailed across the region today. A Small Craft Advisory (SCA) remains in effect for the windier waters and channels around Maui County and the Big Island through tonight, but trade winds will gradually ease dropping into the moderate to locally breezy range by Tuesday.

During the second half of the week, trades will weaken further to become light and variable for most waters before strengthening again this weekend. Surf along south facing shores remains elevated from a moderate, medium to long period swell that filled in last night. Observations at PacIOOS buoy Barber`s Point shows the south swell maintaining at roughly 14 seconds.

Based on the buoy readings and surf observations from lifeguards and webcams around the state, have adjusted south shore surf up slightly from the previous forecast for this evening. However, it is still expected to slowly decline through mid-week, so the overall trend remains unchanged. Some wrap also continues this evening for west facing shores, but this is also expected to follow suit as the south swell declines.

Another long period south swell generated from gales just south and east of New Zealand will begin arriving late this week. Surf along east facing shores will continue to fade tonight as Lala moves further west away from the state and as trades decrease on Tuesday. North facing shores will remain tiny throughout the week.

 

>>> Highest Temperature Monday, August 17, 2026 – 117 degrees at Stovepipe Wells, CA


>>> Lowest Temperature Monday, August 17, 2026 – 31 degrees near Redfeather Lakes, CO

 

Twin Wailua Waterfalls Kauai


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

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

>>> Caribbean Sea: There are no active tropical cyclones

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

>>> Gulf of America: There are no active tropical cyclones

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

 

Northeast Pacific: There are no active tropical cyclones

 

>>> South of Mexico:

An area of low pressure is forecast to form several hundred miles south of the coast of southern Mexico around the end of the week. Gradual development of this system is likely thereafter, and a tropical depression is expected to form this weekend while the system moves west-northwestward, remaining well offshore of Mexico.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…high…70 percent

 

>>> Western portion of the eastern Pacific:

A broad area of low pressure is expected to form well to the east-southeast of the Hawaiian Islands during the latter part of this week. Environmental conditions appear conducive for gradual development of this system, and a tropical depression could form towards the end of the week or over the weekend while the system moves generally westward across the western portion of the east Pacific and into the central Pacific.

* Formation chance through 48 hours…low…near 0 percent.
* Formation chance through 7 days…medium…50 percent

 

Central North Pacific: 

Tropical Cyclone 01C (Lala)…is located about 255 MI SSE OF FRENCH FRIGATE SHOALS

LALA STRENGTHENING OVER THE CENTRAL PACIFIC

According to the NHC advisory number 23…

Lala is moving toward the west near 12 mph (19 km/h), and this motion is expected to continue through Tuesday. A turn toward the west-northwest then northwest is forecast on Wednesday and Thursday. Maximum sustained winds have increased to near 70 mph (110 km/h) with higher gusts. Strengthening is forecast during the next couple of days, and Lala is expected to become a hurricane again by Tuesday. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 991 mb (29.27 inches).

 

>>> Northwest Pacific Ocean: There are no active tropical cyclones

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

>>> Southwest Pacific Ocean: There are no active tropical cyclones

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

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



Interesting: The Turtle Who Wants to Cross the Road

An eastern box turtle living in the New Hope Creek watershed near Duke’s campus wants to leave its habitat in search of resources or a mate. What are its safest routes without getting crushed on a busy road?

North Carolina’s official state reptile will soon receive help from a newly formed Bass Connections team working to create safe corridors for reptiles and amphibians living in the region’s nature preserves.

Duke Forest director Sara Childs; Nicolette Cagle, a senior lecturer at the Nicholas School of the Environment; and Shannan Hayes, associate director of undergraduate engagement at the Kenan Institute for Ethics, have teamed up with Nicholas School lecturing fellow Clay Noss and Ph.D. student Caroline Rowley to lead the Bass Connections project during the upcoming academic year.

Read more at: Duke University