The latest update to this website was at 946pm Sunday (HST)

 

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

1.68  Waiakoali, Kauai
0.39  St. Stephens, Oahu
0.96  Kaunakakai Mauka, Molokai
0.38  Lanai 1, Lanai
2.59  Kula 1, Maui
10.61  Puu Waawaa, Big Island!

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

08  Port Allen, Kauai – NW
12  Kahuku Trng, Oahu – SW
12  Makapulapai, Molokai – SE
17  Lanai 1,  Lanai – W
38  Nene Nest, Maui – SW
31  Mauna 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

 

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Inclement weather conditions…giving way finally

 

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

Clouds moving into the state from the west…localized thunderstorms southeast

 

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https://radar.weather.gov/ridge/standard/PHKI_loop.gif

https://radar.weather.gov/ridge/standard/PHKM_loop.gif

  Showers locally…some still quite heavy

 

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

~~~ Hawaii Weather Narrative ~~~

 

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

949pm, I’m back Sunday evening, after having no power or internet connectivity since this past Friday afternoon!

 

>>> Highest Temperature Sunday, March 15, 2026 – 105 degrees near Hidalgo, TX
>>> Lowest Temperature Sunday, March 15, 2026 – minus 15 degrees at Moore, MT

 

Hawaii’s Broad Brush Weather Overview…as of 821pm Sunday:  Periods of moderate to heavy rain continue over Leeward Big Island and Maui while conditions improve elsewhere. There is a threat for heavy rain during the latter half of this week as low pressure develops west of the islands.

Short Term Update…as of 821pm Sunday: The kona low has meandered well north of the islands; however, showers continue to sock in Maui County and the Big Island, where Flash Flood Watches remain in place. It`s anticipated that showers will ease throughout the overnight period, allowing the aforementioned Watch to be canceled by the morning forecast.

Meanwhile, latest observations continue to depict the summits of the Big Island gusting well above High Wind Warning threshold. Model guidance suggests these winds will fall below threshold, warranting the downgrade to a Wind Advisory.

Hawaii’s Weather Details…as of Sunday: Moisture embedded within deep layer southwest flow extends well upstream of the Big Island, and will continue to deliver waves of rainfall through at least Monday night and potentially Tuesday. However, the lack of large scale forcing during this time, will likely result in a trend toward lower intensity rainfall, compared to what was observed over the last couple of days.

At the same time, the weakening background wind field may allow the overnight mountain breeze to more effectively focus stronger convection offshore at night. Rather nondescript surface pressure and wind fields takes shape Tuesday, which should finally bring an end to the steady stream of rainfall.

At this time, the Flood Watch will remain in effect for the Big Island and Maui, though confidence in the moisture band lifting sufficiently far north to impact Maui again is low at this time. The High Wind Warning for Haleakala and the Big Island summits will be extended through the night.

Attention then turns to mid to late week when the remnant frontal band reactivates, in response to renewed mid/upper forcing followed by potential development of low pressure west of the islands during the second half of the week. The first upper wave arrives late Wednesday. Mid-level flow will still be southwesterly at this time, though it is uncertain whether the wind flow will will be in a state of weak trades or of out of the south. In any case, an uptick in showers is anticipated over the islands by Wednesday night.

Surface pressure falls will already be taking place upstream of the islands during this time, as a trailing upper wave approaches the islands from the northwest. The most recent run of the GFS model has made a strong move toward the EC model, increasing confidence that organized low pressure will develop over or near the islands by late this week. Moderate to heavy rain then potentially develops over the islands as early as Friday, and would continue into 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 Sunday:  The kona storm that has impacted the region over the past few days will weaken as it moves northeast and away from the area, with conditions improving over the coastal waters. Latest hi-res guidance shows that locally strong winds may linger over portions of the central and eastern waters tonight. Additionally, buoy observations show that seas remain elevated, with Barber`s Point and Hanalei still reporting 10ft and 12ft significant wave heights this afternoon, respectively.

Therefore, the Small Craft Advisory (SCA) that was previously in effect has been extended in time through tonight to capture the seas for the western waters and locally breezy winds in the central and eastern waters (with the exception of the Southeast Big Island zone where the SCA has been cancelled). By early Monday, both winds and seas are expected to fall below advisory criteria. Winds will then remain light and variable through mid-week. Ridging is forecast to strengthen north of the islands late in the week, which should bring a return of moderate to fresh trade winds.

Large, rough surf along south-facing shores that has been observed over the past few days will trend lower tonight and Monday as wind speeds subside. A new long-period south swell will arrive late Monday night and Tuesday, giving an extended boost to south shore surf through late this week.

A moderate sized, short-period west-northwest swell will continue to affect north and west facing shores through Monday, but surf will remain below advisory levels. The one exception is for west facing shores of the Big Island, where a High Surf Advisory remains in effect through 6am. This short-period swell will lower Monday night and Tuesday, while a new medium-period north- northwest swell fills in. This north-northwest swell could bring surf up to advisory levels Tuesday night and Wednesday, with the swell then shifting more northerly and lowering below advisory levels Thursday into next weekend.

Surf along east facing shores will remain well below normal levels through the middle of the week, before trending upward Thursday into next weekend as trade winds return over and upstream of the islands.

 

WATCH: Heavy rain and high winds in Hawaii



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:  There are no active tropical cyclones

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:  Here’s Why you Need to Charge your EV More Often in the Cold

When the temperature drops to -20°C, we electric car owners quickly notice it on our wallets. But is it just a matter of driving with the heat on full blast? And what can we do to save the battery as much as possible?

You charged your car to 80 percent last night, and this morning it’s at 78 percent. The fast charger, which usually takes half an hour, now takes almost two hours. And on the way to work, you notice that the battery percentage is dropping faster than normal.

We spoke to senior researcher and battery expert, Fride Vullum-Bruer, to gain a little more insight into why batteries behave the way they do, and what we as users can do to protect the battery as much as possible in the cold.

Read more at: Norwegian University of Science and Technology

Yes, you have to charge your EV more often when the temperature drops. But with simple adjustments, you can use your electric vehicle in a predictable and safe way, even when the temperature drops to 20 below.