The latest update to this website was at 457am Wednesday (HST)

 

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

0.40  N Wailua Ditch, Kauai
0.42  Kalahee Ridge, Oahu
0.96  Honolimaloo, Molokai
0.38  Lanai City, Lanai
1.71  Hana AP, Maui
4.26  Mountain View, Big Island 

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

12  Mana, Kauai – NW
09  Waianae Valley, Oahu – NNE
14  Anapuka, Molokai – NNW
12  Lanai 1,  Lanai – NE
15  Kealia Pond, Maui – NNE
29  Moana Loa Obs, 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

Variable clouds with an axis of rich tropical moisture over the state

 

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

No lack of clouds moving into the state from the west 

 

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 heavy 

 

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

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Tuesday comments:  I’m here at home in upper Kula, Maui

526am Monday morning, there’s no wind, variably cloudy skies here at my place, with the low temperature a relative warm 60.5 degrees, along with the relative humidity 81%.

110pm, just back from shopping at Mana Food in Paia. It was wet down there and all the way back here to upper Kula…we still have pea soup fog, with the temperature of 64 degrees with the relative humidity 81%.

247pm, here in upper Kula it is cloudy with a moderately heavy shower falling, with the temperature 63.3 degrees.

828pm, the wind is slack, the clouds are trying to break up some, and I don’t hear any rain falling here at my place…temp 59.5 degrees

 

>>> Highest Temperature Tuesday, March 17, 2026 – 104 degrees at Indio, CA
>>> Lowest Temperature Tuesday, March 17, 2026 – minus 22 degrees at Lutsen, MN

 

– Scattered light to moderate showers across primarily the eastern half of state today.
– Potential for locally heavy rain Thursday into the weekend, with the highest probability for Maui County and Big Island.
– This upcoming system will not be as strong as the previous kona storm.
– An overall wet pattern to continue over the next 7-days across Hawaii

 

Hawaii’s Broad Brush Weather Overview…as of 845pm Tuesday:  A weather pattern featuring light winds, mostly cloudy skies, and scattered to numerous showers will continue through the middle part of the week, with the greatest moisture residing over portions of Maui County and the Big Island.

The weather will once again become more active during the latter part of the week as a new low develops, bringing renewed chances for heavy rain and moderate kona winds. Given the high soil saturation from the recent kona storm, even moderate rainfall rates could pose a risk for rapid runoff and flooding, especially from Friday into the weekend.

Hawaii’s Weather Details…as of 840pm Tuesday: A band of showers with predominately light to moderate rain rates is seen on radar and satellite imagery moving across portions of east Maui and the Big Island. These showers are associated with a low-level trough that is moving through this evening. As the trough moves farther away from Maui, expect improving conditions there, though latest hi-res guidance depicts lingering showers and low clouds over much of the Big Island throughout the rest of the night and into early Wednesday morning.

The afternoon atmospheric sounding at Hilo also showed some instability over the western end of the state, which was realized in the form of a few isolated thunderstorms near the Hilo area, and in the Big Island windward coastal waters this evening. Elsewhere, drier conditions are observed this evening from Kauai to Molokai, where rain gauge networks show very little rain has fallen over the past several hours.

The forecast has undergone a significant update, to bring shower chances and winds closer in line with the latest observations and short-term model guidance. The state continues to reside beneath a large upper-level troughing pattern, which continues to transport moisture-rich air into the region. Precipitable water values in excess of 2 inches continue to reside over the islands. Despite the rich moisture with scattered to numerous scattered showers possible, the middle of the week will still likely be the driest portion of the forecast, ahead of the next low pressure system forming nearby.

Winds will be relatively light and variable through Wednesday night. By the latter part of this week, the upper-level winds will become stronger and a trough will deepen into a low just west of the state. Once again, a rich plume of deep tropical moisture will be drawn over the islands, especially the eastern half of the state over Maui County and the Big Island, and will mark the return of south to southwesterly surface flow (kona winds). As a result, shower chances will increase significantly again beginning for some areas on Thursday and lasting into the weekend, including the potential for heavy rain and flooding.

The latest model guidance continues to support an additional several inches of rainfall possible over portions of the state during this period. While this next system is not anticipated to be as intense as the recent kona storm event, it is important to note that it will impact an already highly saturated environment. Given the antecedent conditions, including elevated streams and saturated soils, even moderate rainfall rates may quickly lead to runoff issues. The threat for flash flooding will become elevated statewide by Friday, with the potential for more significant impacts persisting through the weekend.

 

Here’s a near real-time Wind Profile of the Pacific Ocean – Zoom Earth – 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…as of 305am Tuesday:  Light and variable winds will prevail through mid-week, with daytime sea breezes and overnight land breezes near the coasts. A brief period of light trades will be possible by mid-week as a weak ridge builds north of the state, followed by light to moderate south winds late in the week, as a new system approaches from the west.

Surf along exposed north and west facing shores are trending up as a fresh north-northwest swell builds down the island chain. This source should peak through Wednesday (overhead to double overhead at peak spots), then ease into the second half of the week, as it shifts out of the north-northeast.

Surf along south shores will trend up through mid-week as a fresh long period south swell arrives. This swell will peak Wednesday through Thursday (head high), then ease into the weekend.

Surf along east facing shores will remain well below average due to the lack of trades locally and upstream. The exception will be for east facing shores exposed to north-northeast swells expected later this week into the weekend.

 

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World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Caribbean Sea:  There are no active tropical cyclones

Gulf of America:  There are no active tropical cyclones

 

Northeastern Pacific:  There are no active tropical cyclones

North Central Pacific: There are no active tropical cyclones

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

 

Northwest Pacific Ocean: There are no active tropical cyclones

 

Southwest Pacific Ocean: 

Tropical Cyclone 27P…is located approximately 364 NM northeast of Cairns, Australia

https://www.metoc.navy.mil/jtwc/products/27P_181200sair.jpg

North 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:  A study in Stardust: Massive Binary Stars Emit Tiny Carbon Particles

It’s fitting that Yale junior Donglin Wu’s first major scientific journal article as lead author focuses on stardust — tiny solid grains that form from stellar winds, drift into interstellar space, and may eventually become parts of new planets.

Wu has long been in awe of the majesty and mystery of stars. As a kid, in Shanghai, he would stare at the heavens in wonder of what it all meant. He brings that same spirit of curiosity to his studies at Yale, especially in his work with Héctor Arce, a professor of astronomy in the Faculty of Arts and Sciences, and Daisuke Nagai, a professor of physics and astronomy in FAS.

“Astronomy and astrophysics connect to something very romantic,” Wu says. “You look up at the night sky and think about how immense it is. There are so many things that are still unknown — things that are difficult to observe, things that are rare.”

Read More at: Yale University