The latest update to this website was at 934am Thursday (HST)

 

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

0.84  Kilohana, Kauai
0.17  Pupukea Road, Oahu
0.07  Honolimaloo, Molokai
0.00  Lanai
0.21  West Wailuaiki, Maui
0.36  Pahoa, Big Island

The following numbers represent the strongest wind gusts (mph) as of Thursday morning:

22  Lihue, Kauai
24  Oahu Forest NWR, Oahu
24  Makapulapai, Molokai
21  Lanai 1, Lanai
24  Kealaloloa Rg, Maui
28  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/GOES18/ABI/SECTOR/tpw/13/GOES18-TPW-13-900x540.gif

Thunderstorms mostly just north of the state…cold fronts far northwest 

 

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

High and middle level clouds in the vicinity of the state…along with developing cumulus clouds and thunderstorms

 

 

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

Showers locally…some are heavy 

 

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 early this morning with a few clouds. The low temperature at my place was 53 degrees…with a relative humidity of 75%.

935am, it’s mostly clear and sunny here in Maui County, along with some streaky high cirrus clouds, and a few cumulus clouds here and there.

Weather Wit of the day: This makes no sense. why is it that a heavy downpour can wash away tons of topsoil but won’t remove one ounce of dust from my car?

>>> Highest Temperature Wednesday, October 15, 2025 – 96 at Rio Grande Village, Texas
>>> Lowest Temperature Thursday, October 16, 2025 – 15 near Manila, Utah

 

Hawaii’s Broad Brush Weather Overview: An unstable, moderate to locally breezy trade wind weather pattern will continue into Saturday, as an upper low near Kauai and Oahu, and low level convergent cloud bands riding in on the easterly trade winds, bring periods of showers to all islands.

Some of these showers will be locally heavy at times with thunderstorms possible over the western half of the state through Saturday morning, and portions of the Big Island later today. Enhanced showers will linger into early next week, as another upper low moves in from the north and settles in over the western half of the state.

Hawaii’s Weather Details:  Satellite imagery shows the upper level low center settling in over Kauai and Oahu. Deeper convection and showers are developing under this upper level disturbance. The heaviest showers last night appeared to pass just north of the smaller islands likely due to east-southeasterly steering winds at around 5,000 feet, causing the stronger showers to move parallel to the smaller islands.

The north shore of east Maui observed up to a quarter inch of rainfall last night, and the north and eastern slopes of Kauai also received up to a half inch of rainfall in the stronger shower bands. Temperature inversion heights as measured by upper air balloon soundings from Lihue and Hilo were observed around the 7,000 to 8,000 foot range. Overall these higher inversion heights continue to support periods of wet weather for all islands.

These periods of enhanced showers are forecast continue into Saturday, with slightly decreasing trends into Sunday as the upper low drifts westward away from the islands. The forecast challenge today will be in forecasting the low level cloud steering wind directions. A more easterly direction will push these clouds directly into island mountains, producing higher rainfall totals.

The steering winds last night from the east-southeast direction likely limited rainfall totals for the smaller islands. The latest short range model solutions show a more easterly direction on these low level steering winds later today into Friday, as the upper low begins to drift westward, allowing higher pressure to build back into the area.

Another upper level low descends over the western islands on Monday, producing a very similar wet weather pattern over the islands through the first half of next week. Rainfall amounts for each island will heavily depend on smaller convergent bands. Trade winds will lift unstable clouds over windward island mountain areas where the highest rainfall totals are favored.

The western islands of Kauai and Oahu may see locally heavy rainfall and possible thunderstorms during this time period. Stay tuned for more weather details for early next week, as this next system approaches the islands from the north.

Fire weather:  Wind speeds and afternoon minimum humidity levels will likely remain below critical fire weather thresholds this week. Unstable conditions will produce increasing wet weather trends across the state into Saturday. Locally heavy rain and thunderstorms are possible during this time period. Temperature inversion heights near Maui and the Big Island will range from the 7,500 to 8,500 feet elevation range for the time being.

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Vog map animation / 8-Day Precipitation model

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

 

Hawaii’s Marine Environment:  Moderate to locally strong trades winds have filled in across the Hawaiian coastal waters, as a surface high strengthens far northeast of the state. A Small Craft Advisory (SCA) remains in effect for typical windy waters around Maui County and the Big Island through 6pm Friday.

The SCA will likely be extended into the weekend as another high quickly builds north of the state and tracks east. An upper low will drift from east to west across the state today into the weekend, keeping isolated thunderstorms over the forecast waters into the weekend.

A reinforcing moderate, long period northwest swell energy will fill in, maintaining near to above average surf along north and west facing shores through Friday. A brief moderate, long period north-northwest swell will move through Friday, but should taper off Saturday keeping surf elevated.

Surf along north and west facing shores will trend down through the weekend. A hurricane force low is expected to develop east of Japan, and could bring another round of moderate, long period northwest swell early next week, elevating surf along north and west facing beaches.

A series of small, medium to long period, south to southwest swells will continue to move into the area through the rest of the week into the weekend, keeping south-facing shores from going flat. East-facing shores surf will gradually pick up into the weekend as trades strengthen and persist.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclone

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

Caribbean Sea:  There are no active tropical cyclone

>>> A tropical wave located over the tropical central Atlantic is expected to move westward at 15 to 20 mph during the next several days. Some slow development of this system is possible when it reaches the central portion of the Caribbean Sea by the middle part of next week.

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

Gulf of America:  There are no active tropical cyclone

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

 

Northeastern Pacific: 

South of Southern Mexico:

Invest 91E

>>> A broad area of low pressure is producing some disorganized showers and thunderstorms offshore of southern Mexico. Environmental conditions appear conducive for gradual development of this disturbance, and a tropical depression could form during the next couple of days or so. The system is forecast to move slowly west-northwestward or northwestward near the coast of southern and southwestern Mexico through the weekend.

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

 

North Central Pacific: There are no active tropical cyclone

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:  There are no active tropical cyclones

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:  Engineering Next-generation Fertilizers

MIT postdoc Giorgio Rizzo harnesses plant chemistry to design sustainable fertilizers that could reshape modern farming.

Born in Palermo, Sicily, Giorgio Rizzo spent his childhood curious about the natural world. “I have always been fascinated by nature and how plants and animals can adapt and survive in extreme environments,” he says. “Their highly tuned biochemistry, and their incredible ability to create ones of the most complex and beautiful structures in chemistry that we still can’t even achieve in our laboratories.”

As an undergraduate student, he watched as a researcher mounted a towering chromatography column layered with colorful plant chemicals in a laboratory. When the researcher switched on a UV light, the colors turned into fluorescent shades of blue, green, red and pink. “I realized in that exact moment that I wanted to be the same person, separating new unknown compounds from a rare plant with potential pharmaceutical properties,” he recalls.

Read More: Massachusetts Institute of Technology (MIT)

Image: In the Marelli Lab at MIT, Giorgio Rizzo develops sustainable seed coatings using natural materials to boost plant resilience and reduce the environmental impact of traditional fertilizers.