The latest update to this website was at 853pm Friday (HST)

 

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

86 – 74  Lihue AP, Kauai
87 – 75  Molokai AP, Molokai
89 – 75  Kahului AP, Maui
86 – 75  Kona AP, Big Island
84 – 70  Hilo, AP, Big Island

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

0.28  Mount Waialeale, Kauai
0.10  Poamoho RG 1, Oahu
0.02  Honolimaloo, Molokai
0.00  Lanai
0.10  West Wailuaiki, Maui
0.47  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 Friday evening:

25  Port Allen, Kauai
36  Oahu Forest NWR, Oahu
32  Makapulapai, Molokai
37  Lanai 1, Lanai
45  Kealaloloa Ridge, Maui
54  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 Iona far west of the state…Hurricane Gil far east-southeast 


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 Aloha Friday comments:  I’m home here in upper Kula, Maui, Hawaii.

It’s mostly clear here in Maui County early this morning…with just the usual clouds along the windward sides and over the West Maui Mountains.  The low temperature at my place was a chilly 52 degrees.

Yet another near cloudless day with some haze (dust) due to the windy trade winds early this afternoon.

Early evening tropical warmth is holding on, I’m so looking forward to sunset!

8pm, despite it being dark, the temperature here in upper Kula is dropping very slowly…now 66.5 degrees.

Weather Wit of the day:  Climate Deviation – Unnatural love of temperature, wind and rain

>>> Highest Temperature Friday, August 1, 2025 – 116 near Tolleson, Arizona
>>> Lowest Temperature Friday, August 1, 2025 – 30 Peter Sinks, Utah

 

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

Hawaii’s Weather Details: A gusty, stable, and rather dry trade wind flow will persist through Saturday. The trades will remain breezy to locally windy as the local pressure gradient remains tight, due to surface high pressure drifting eastward about 1,000 miles north of the state, and a trough moving westward in the deep tropics south of the islands.

High pressure aloft will maintain an inversion between 5,000 to 6,000 feet, and the resulting stability will continue to produce localized strong winds near terrain across the Kohala Districts of the Big Island and the central valley of Maui, where the Wind Advisory has been extended through Saturday 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, 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, and likely into Saturday. Critical fire weather conditions, with winds of 20 mph or more and daytime relative humidity of 35 to 45 percent, is expected to persist over leeward areas, and possibly into Saturday. A strong inversion based around 6,000 feet will ensure that higher elevations of the Big Island and 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 near gale trades across the local waters. A Small Craft Advisory (SCA) is currently in effect through tonight for most marine zones surrounding Maui and the Big Island. Additional zones may need to be added to the SCA this weekend, as winds increase slightly. Trades then begin to weaken by early next week as the aforementioned high drifts further east.

Tropical Storm Iona continues to track to the west-northwest, far southwest of the Hawaiian Islands.

The current moderate to large, long period, south swell appears to have peaked at the nearshore buoys, but is expected to hold steady, and continue to bring advisory level surf to south facing shores. Thus, A High Surf Advisory remains in effect for the south facing shores of all islands. Expect a decline in swell energy tonight through this weekend, as the swell slowly fades. Another moderate, long period, south swell should begin to build on Monday and help build surf heights to near advisory levels once again.

East shore surf will remain elevated and choppy due to locally strong trade winds through this weekend. This will be followed by a decline early next week as trades weaken.

Flat summer conditions along north facing shores may be interrupted late this weekend by a small long period northwest swell from Typhoon Krosa, currently in the western Pacific.

 



World-wide Tropical Cyclone Activity

 

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.

 

Northeastern Pacific

Tropical Cyclone (Gil)..is located about 1080 miles west-southwest of the southern tip of Baja California

According to the NHC Advisory number 8

GIL NOW A HURRICANE

Gil is moving toward the west-northwest near 17 mph and this general motion is expected over the next few days. Maximum sustained winds are near 70 mph with higher gusts. Some slight strengthening is forecast and Gil could become a hurricane later today. Gradual weakening is expected over the weekend. Tropical-storm-force winds extend outward up to 140 miles from the center.

cone graphic

 

Western East Pacific:

>>> An area of low pressure is expected to form well southwest of southwestern Mexico within the next day or two. Environmental conditions appear conducive for some gradual development of this system, and a tropical depression is likely to form late this weekend or early next week, as the system moves west-northwestward at 10 to 15 mph.

* Formation chance through 48 hours…medium…50 percent
* Formation chance through 7 days…high…80 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. Thereafter, 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…40 percent

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

 

North Central Pacific: 

Tropical Cyclone 01C (Iona)..is located about 1465 miles west of Honolulu, Hawaii

According to the NHC Advisory number 24

IONA EXPECTED TO CROSS THE INTERNATIONAL DATELINE IN THE NEXT 6 HOURS OR SO

The depression is moving toward the west-northwest near 17 mph, and this motion is expected to continue over the next couple of days with a gradual decrease in forward speed. Maximum sustained winds are near 35 mph with higher gusts. Little change in strength is forecast during the next day or two. Additional weakening is forecast to begin on Sunday.

cone graphic

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

 

Northwest Pacific Ocean: 

Tropical Cyclone 12W (Krosa)…is located 75 NM east-southeast of Narita AP, Japan

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

Tropical Cyclone 13W…is located 281 NM west-northwest of Iwo To

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:  Researchers Measure a Record-Setting Megaflash

It was a single lightning flash that streaked across the Great Plains for 515 miles, from eastern Texas nearly all the way to Kansas City, setting a new world record.

“We call it megaflash lightning, and we’re just now figuring out the mechanics of how and why it occurs,” said Randy Cerveny, an Arizona State University President’s Professor in the School of Geographical Sciences and Urban Planning.

Cerveny and colleagues used space-based instruments to measure the megaflash, which took place during a major thunderstorm in October 2017.

Its astonishing horizontal reach surpasses by 38 miles the previous record of 477 miles recorded during an April 2020 storm in the southern U.S. The new record-setter went unnoticed until a re-examination of satellite observations from the 2017 storm.

Read more at Arizona State University