The latest update to this website was at 640pm Tuesday (HST)

 

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

0.66  Mana, Kauai
0.39  Kalahee Ridge, Oahu
0.52  Honolimaloo, Molokai
0.24  Lanai City, Lanai
0.85  Kahakuloa, Maui
2.46  Kulani NWR, 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 

 

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.

 

>>> 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 441pm Tuesday: A weather pattern featuring light winds, mostly cloudy skies, and scattered to numerous showers will characterize conditions through Thursday. Deep moisture from the tropics remains entrenched, particularly over the Big island and Maui County.

The forecast calls for a increase in adverse weather by Friday as a new upper-level low, and surface system approach from the west, bringing the potential for heavy rain and renewed moderate southwest kona winds. Given the extreme soil saturation from the recent storm, even moderate additional rainfall poses a risk for rapid runoff and flooding.

Hawaii’s Weather Details…as of 441pm Tuesday: The state continues to reside beneath the lingering effects of a large, entrenched upper-level trough, the remnant signature of the powerful kona low that recently moved away. Despite the dissipation
of the low`s core, the larger atmospheric flow continues to transport moisture-laden tropical air across the island chain.

Atmospheric measurements confirm a persistent, unusually high amount of water vapor saturating the air mass. Near-term model projections suggest a brief reprieve from the heaviest, most widespread rain over the next 36 to 48 hours, with the western islands of Kauai and Oahu seeing the most noticeable slackening.

Nevertheless, the atmosphere remains unstable, and showers will be a consistent feature. The highest concentration of showers, including the potential for localized heavy bursts, is expected to remain focused along the axis of deepest moisture over the eastern islands of Maui County and the Big Island through Wednesday.

Shifting focus to the latter part of the week, the upper-level flow is predicted to amplify, with the trough deepening again just west of Hawaii. This development is expected to draw the rich plume of tropical moisture back across the entire archipelago, while generating stronger large-scale lift necessary for precipitation.

Near the surface, models indicate a low-pressure area forming and advancing toward the islands, which will herald the return of
moderate south-to-southwest (kona) winds. This evolving setup strongly supports a major resurgence of rain coverage and intensity,
likely starting late Thursday and continuing into the weekend.

Current forecasts suggest several additional inches of rainfall could accumulate across various portions of the state during this event. While this approaching system is not forecast to match the magnitude of the recent intense storm, its impact will be amplified
by the current, severely saturated ground conditions.

Due to the pre-existing environment, including full stream beds, elevated reservoirs, and waterlogged soils, even modest rainfall rates will likely exceed the ground`s infiltration capacity, leading to immediate runoff problems. consequently, the flash flood threat is expected to become a primary concern across all islands starting Friday afternoon, with significant potential for impacts lasting
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 614 NM north of Cairns, Australia

https://www.metoc.navy.mil/jtwc/products/27P_171200sair.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