The latest update to this website was at 337pm Thursday (HST)

 

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

84 – 74  Lihue AP, Kauai
85 – 72  Molokai AP, Molokai
87 – 67  Kahului AP, Maui
85 – 72  Kona AP, Big Island
84 – 69  Hilo, AP, Big Island

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

0.99  Mount Waialeale, Kauai
0.36  Poamoho RG 1, Kahana, Oahu
0.03  Puu Alii, Molokai
0.12  Lanai City, Lanai
0.62  West Wailuaiki, Maui
1.08  Waiaha Stream, Big Island

>>> There are lots of new locations that measure rainfall and winds now, 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 Thursday afternoon:

25  Port Allen, Kauai
37  Honolulu AP, Oahu
31  Molokai AP, Molokai
27  Lanai 1, Lanai
47  Na Kula, Maui
33  Kawaihae, 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 

 Thunderstorms far south in the deeper tropics 


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 and middle level clouds locally

 

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

It’s mostly clear here in Maui County this morning…with a few clouds locally.  The low temperature at my place was 51.5 degrees.

I played Pickleball in Makawao this morning, which was very fun, and it wasn’t too crowded! I played 5-games and there was very little or no waiting between games.

339pm, it’s a relatively cool afternoon here in upper Kula, as we have both high and low level clouds muting the July sunshine.

Weather Wit of the day:  Increasing Clouds – The partly’s over

>>> Highest Temperature Thursday, July 3, 2025 – 113 at Death Valley, California
>>> Lowest Temperature Thursday, July 3, 2025 – 33 at Redfeather Lakes, Colorado

 

Hawaii’s Broad Brush Weather Overview:  Dry conditions will prevail within better established trade winds. Breezy winds will strengthen to locally windy through the holiday weekend. Thicker clouds and higher shower frequency remain focused over primarily windward exposures and the upslope mountains during the overnight hours.

Hawaii’s Weather Details: A high will settle a little over a thousand miles north northeast of the island chain the next several days. This will tighten the downstream pressure enough across the state, to produce and maintain breezy to locally strong trade winds through the 4th of July holiday weekend.

After a pocket of moisture passes by the eastern third of the state, there will be many days where the suppressing mid level ridge takes over, rooting itself over and north of the islands. This will result in a significantly dry mid to upper level regional atmosphere.

A more shallow nocturnal layer will only be sufficiently moist enough to produce showers. We’ll see sunnier skies as a result of stable mid to upper ridging, producing drier conditions, especially over better wind protected areas (such as leeward Big Island), building afternoon clouds and introducing more frequent afternoon showers.

The combination of drier conditions within breezy to locally strong trade flow will elevate fire weather concerns, particularly each subsequent mostly sunny day without any substantial rainfall. Many windward areas are abnormally dry with leeward regions falling under more moderate drought conditions.

Confidence remains low, but if the state does experience a near term period of low to no rainfall, the main topic of concern the next few days will be centered around greater wildfire potential.

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 far north of the state will strengthen Friday into the weekend, with fresh to locally strong trade winds expected. Winds are expected to further strengthen early next week, with widespread strong trade winds possible. A Small Craft Advisory (SCA) is in effect for the typical windier waters and channels around Maui County and the Big Island through at least 6pm Friday.

The current south swell will slowly decline Friday into the weekend. Surf heights should still hold near the summer time averages before dropping Friday into the weekend. Tiny, long-period south swell energy will hold into next week, with below average surf expected.

Along east facing shores, an increase of rough and choppy surf is expected this weekend into next week, as the trade winds strengthen. No significant swells are expected through next week.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Near the southeastern U.S.  

>>> An area of low pressure is forecast to develop along a weakening frontal boundary near Florida or the Atlantic coast of the southeastern United States on Friday or Saturday. Environmental conditions appear only marginally conducive for some slow development, but a tropical or subtropical depression could form in this region over the weekend or early next week while the system drifts northward or northeastward. Regardless of development, heavy rainfall is possible across portions of the southeast U.S., particularly across the west-central Florida coast. An Air Force Reserve Hurricane Hunter aircraft is scheduled to investigate the system on Friday, if necessary.

* Formation chance through 48 hours…low…30 percent
* Formation chance through 7 days…medium…60 percent

Caribbean Sea:  There are no active tropical cyclone

Gulf of America:  There are no active tropical cyclone

 

Northeastern Pacific:   

Post-Tropical Cyclone 06E (Flossie)…is located about 200 miles southwest of Cabo San Lucas, Mexico – Last Advisory

FLOSSIE NOW A POST-TROPICAL CYCLONE

According to the NHC advisory number 19

The post-tropical cyclone is moving toward the northwest near 10 mph. A general west-northwestward to northwestward motion is expected during the next couple of days. Maximum sustained winds have decreased to near 40 mph with higher gusts. Continued steady weakening is expected, and the post-tropical low is forecast to dissipate this weekend. Tropical-storm-force winds extend outward up to 45 miles from the center.

South of Southern Mexico:

>>> A large area of disorganized showers and thunderstorms, partly associated with a tropical wave, is centered a few hundred miles south of southern Mexico. Gradual development of this system is expected during the next few days, and a tropical depression is likely to form over the weekend or early next week while it moves generally west-northwestward well off the coast of Mexico.

* Formation chance through 48 hours…medium…40 percent
* Formation chance through 7 days…high…80 percent

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

 

North Central Pacific:  There are no active tropical cyclones

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

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

 

Northwest Pacific Ocean:  There are no active tropical cyclones

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean: 

Tropical Cyclone 04W (Mun)…is located approximately 464 NM southeast of Yokosuka, Japan

https://www.metoc.navy.mil/jtwc/products/wp0425.gif

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:  How Gut Bacteria Change After Exposure to Pesticides

While emerging evidence suggests pesticides can be toxic to the mix of microorganisms in the digestive system, a new study is the first to map changes to specific gut bacteria based on interactions between human microbes and insect-killing chemicals observed in the lab and an animal model.

The analysis showed that over a dozen pesticides influence human gut bacteria growth patterns, affect how gut microorganisms process nutrients and camp out inside some bacteria. Researchers say the resulting “atlas” of molecular mechanisms, which they have made publicly available, is a resource that can be leveraged for targeted studies on relevant diseases and potential therapeutic strategies.

Experiments in mice showed that one gut bacteria species provides some protection against pesticide toxicity, hinting at the possibility for a probiotic approach to preventing some of their damaging health effects – in this case, inflammation.

Read more at: Ohio State University