The latest update to this website was at 839pm Saturday (HST)

 

Here are the highest temperatures Saturday…and the lowest Saturday morning:

87 – 76  Lihue AP, Kauai
84 – 76  Molokai AP, Molokai
89 – 76  Kahului AP, Maui
88 – 75  Kona AP, Big Island
83 – 72  Hilo, AP, Big Island

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

0.34  Mount Waialeale, Kauai
0.21  Tunnel RG, Oahu
0.05  Puu Alii, Molokai
0.00  Lanai
0.16  West Wailuaiki, Maui
0.42  Kawainui Stream, Big Island

>>> There are lots of locations that measure rainfall and winds, here’s a map of all areas for your reference (the map is clickable to zoom in closer)

The following numbers represent the strongest wind gusts (mph) as of Saturday evening:

30  Port Allen, Kauai
37  Kuaokala, Oahu
42  Molokai AP, Molokai
45  Lanai 1, Lanai
46  Kealaloloa Ridge, Maui
48  Puuloa, Big Island

Hawaii’s Mountains – Here’s a link to the live webcams on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii, and atop the Haleakala Crater (~10,023 feet) 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/GOES17/ABI/SECTOR/tpw/13/GOES17-TPW-13-900x540.gif 

 Tropical Storm Gil far east of Hawaii


https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/GEOCOLOR/GOES17-HI-GEOCOLOR-600x600.gif

Low clouds being carried our way on the trade winds 

 

https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/13/GOES17-HI-13-600x600.gif

High level clouds arriving from the west

 

https://radar.weather.gov/ridge/standard/HAWAII_loop.gif

Localized showers 

 

https://www.weather.gov/images/hfo/satellite/Kauai_VIS_loop.gif

Kauai and Oahu (Satellite)

 

https://radar.weather.gov/ridge/standard/PHKI_loop.gif

Kauai and Oahu (Radar)

 

https://www.weather.gov/images/hfo/satellite/Oahu-Maui_VIS_loop.gif

Oahu and Maui County (Satellite)

 

https://radar.weather.gov/ridge/standard/PHMO_loop.gif

Oahu and Maui County (Radar)

 

https://www.weather.gov/images/hfo/satellite/Hawaii_VIS_loop.gif

 Maui, Kahoolawe, Lanai, and the Big Island (Satellite)

 

https://radar.weather.gov/ridge/standard/PHKM_loop.gif

Maui County and the Big Island (Radar)

 

https://radar.weather.gov/ridge/standard/PHWA_loop.gif

Big Island (Radar)

 

Model showing precipitation through 8-days (you can slow this animation down)


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

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Saturday comments:  I’m home here in upper Kula, Maui, Hawaii.

It’s mostly clear here in Maui County early this morning…with a few wisps of high cirrus clouds.  The low temperature at my place was 54 degrees.

I played Pickleball today in Haiku, with all my usual friends, which made for very fun games!

Yet another day of high heat here in upper Kula. Looking around Maui from here in upper Kula, I see very few clouds, I mean there’s hardly a cloud in the sky in any direction. This early August weather is too dry and too hot for me, I’m so ready for the cooler weather this autumn!

I love it when the sun goes down, as the heat end abruptly and the temperature dips down into the 60’s by the time it gets fully dark. Right now, at 719pm, my thermometer is reading 70.8 degrees.

840pm, it’s completely clear and the temperature has dropped to a very pleasant 61.1 degrees.

Weather Wit of the day:  Shopping Weather – A low of 65 and a high of 78.99

>>> Highest Temperature Saturday, August 2, 2025 – 116 near Topock, Arizona
>>> Lowest Temperature Saturday, August 2, 2025 – 29 Peter Sinks, Utah

 

Hawaii’s Broad Brush Weather Overview:  Breezy to locally windy trades and rather dry and stable conditions will continue today. Clouds and light showers being carried in on the trade wind flow will remain focused over windward and mountain areas, while most leeward areas will remain dry. Stable trade winds will gradually ease Sunday through Tuesday, and may become disrupted Wednesday or Thursday.

Hawaii’s Weather Details: High pressure to the north and northeast, and low pressure to the south, combined with high pressure aloft, remain the driving force behind our local weather here in the islands.

This combination has tightened the pressure gradient over the islands leading to a gusty, stable and relatively dry trade wind flow that will continue today. The inversion is between 5,000 to 6,500 feet, and the resulting stability will continue to produce localized strong winds near terrain across the Kohala District of the Big Island, and the central valley of Maui, where the Wind Advisory continue through this afternoon. Shallow pockets of moisture being carried in on the trade wind flow will continue to bring light rainfall accumulation mainly to windward slopes, with leeward areas remaining dry.

Trade winds will gradually decline Sunday into Tuesday as the high drifts eastward, and the local pressure gradient slowly relaxes. The stable pattern of mainly windward and mountain showers, essentially typical August rainfall, should persist as little organized moisture is depicted in the guidance.

Trades will likely become disrupted Wednesday or Thursday, though there is uncertainty in the details. The latest National Hurricane Center forecast depicts current east Pacific Tropical Storm Gil weakening to a remnant low well east of Hawaii early next week, and the models show a remnant circulation passing north or near the state as early as Wednesday but potentially Thursday. Disrupted trades is the most likely scenario, but it’s too early to know if there will be any significant chance for enhanced rainfall.

Fire weather: A gusty, stable, and rather dry trade wind flow will remain in place, producing critical fire weather conditions, with winds of 20 mph or more and daytime relative humidity of 35 to 45 percent. A strong inversion based between 5,000 to 6,500 feet will ensure that higher elevations of the Big Island and portions of Haleakala on Maui experience very low relative humidity. Winds will decline Sunday into Tuesday, lowering fire weather concerns.

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Vog map animation

https://www.weather.gov/images/hfo/graphics/npac.gif

 

Hawaii’s Marine Environment:  High pressure will remain far north of the state this weekend and help generate fresh to locally strong trades across local waters. A Small Craft Advisory (SCA) remains in effect through tonight for most marine zones surrounding Maui and the Big Island, then limited to the typical windier zones through Sunday as trades begin to ease. Trades will continue to weaken through mid next week, as the aforementioned high drifts further east.

South swell energy has shown signs of a slow decline, noted on the Lanai nearshore buoy, both in magnitude and period. By mid-morning, the remaining moderate period swell will likely be generating elevated surf along south facing shores, just shy of advisory criteria. Thus, the High Surf Advisory has been canceled. Another moderate, long period, south swell is poised to arrive late Sunday into Monday, once again building surf to near advisory levels.

East shore surf will remain elevated and choppy through Sunday morning, due to locally strong trade winds, then lower slightly as trades begin to slowly ease late Sunday and beyond.

Nearly flat conditions will prevail along north facing shores through tonight. A small long period northwest swell, originating from Typhoon Krosa in the western Pacific, will bring a small rise in surf along north facing shores Sunday into early next week.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Western Atlantic

Invest 95L

>>> A non-tropical area of low pressure located along a frontal boundary about 180 miles off the coast of North Carolina is producing disorganized showers and thunderstorms. Environmental conditions are marginally favorable for this system to potentially become a tropical or subtropical depression or storm today or on Monday while it moves east-northeastward at about 10 mph, away from the coast of North Carolina. Environmental conditions become less conducive for development after Monday.

* Formation chance through 48 hours…medium…40 percent 
* Formation chance through 7 days…medium…40 percent

Central Tropical Atlantic

>>> A tropical wave is forecast to move off the west coast of Africa in the next day or two. Environmental conditions could support some gradual development of the wave during the middle to latter part of next week while it moves generally west-northwestward across the central tropical Atlantic.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…20 percent

 

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.

 

Northeastern Pacific

Tropical Cyclone (Gil)..is located about 1440 miles west of the southern tip of Baja California

According to the NHC Advisory number 12

GIL WEAKENING…EXPECTED TO BECOME POST-TROPICAL ON SUNDAY

Gil is moving toward the west-northwest near 21 mph. A gradual decrease in forward speed is expected during the next couple of days, with a turn toward the west forecast by Monday. Maximum sustained winds have decreased to near 65 mph with higher gusts. Additional weakening is forecast, and Gil is expected to become post-tropical on Sunday. Tropical-storm-force winds extend outward up to 140 miles from the center.

cone graphic

 

Central East Pacific:

Invest 90E

>>> Disorganized showers and thunderstorms located well west-southwest of the southwestern coast of Mexico are associated with a broad area of low pressure. Environmental conditions are conducive for development of this system, and a tropical depression is expected to form late this weekend or early next week while the system moves west-northwestward at 10 to 15 mph.

* Formation chance through 48 hours…high…80 percent
* Formation chance through 7 days…high…90 percent

 

South of Southern Mexico:

>>> An area of low pressure is forecast to form offshore of the coast of Central America and southern Mexico by the middle part of next week. Environmental conditions appear conducive for some development, and a tropical depression could form late next week as the system moves generally west-northwestward at 10 to 15 mph.

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

Here’s the link to the National Hurricane Center (NHC)

 

North Central Pacific: 

Here’s the link to the Central Pacific Hurricane Center (CPHC)

 

Northwest Pacific Ocean: 

Tropical Cyclone 12W (Krosa)…is located 441 NM east of Misawa, Japan

https://www.metoc.navy.mil/jtwc/products/wp1225.gif

 

Tropical Cyclone 13W (Bailu)…is located 159 NM southeast of Yokosuka, Japan

https://www.metoc.navy.mil/jtwc/products/wp1325.gif

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean:  There are no active tropical cyclones

Arabian Sea:  There are no active tropical cyclones

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

 

>>> Here’s a link to the Pacific Disaster Center’s (PDC Global) Weather Wall website

 

Interesting:  Clear-cutting Linked to 18-fold Rise in Extreme Floods, UBC Study Finds

New research finds long-term impacts on flood size and frequency decades after trees are removed.

Clear-cutting can make catastrophic floods 18 times more frequent with effects lasting more than 40 years, according to a new UBC study.

In one watershed, these extreme floods also became more than twice as large, turning a once-in-70-years event into something that now happens every nine.

“This research challenges conventional thinking about forest management’s impact on flooding,” said senior author Dr. Younes Alila, a hydrologist in the UBC faculty of forestry. “We hope the industry and policymakers will take note of the findings, which show that it matters not only how much forest you remove but also where, how and under what conditions.”

Read More: University of British Columbia