The latest update to this website was at 915pm Sunday (HST)

 

Here are the highest temperatures Sunday…and the lowest Sunday:

83 – 73  Lihue AP, Kauai
85 – 69  Molokai AP, Molokai
88 – 67  Kahului AP, Maui
85 – 72  Kona AP, Big Island
82 – 67  Hilo, AP, 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)

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

0.93  Mount Waialeale, Kauai
0.19  Manoa Lyon Arboretum, Oahu
0.02  Puu Alii, Molokai
0.04  Lanai AP, Lanai
0.59  Puu Kukui, Maui
2.12  Kealakekua, Big Island

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

18  Port Allen, Kauai
28  Kuaokala, Oahu
27  Makapulapai, Molokai
25  Lanai 1, Lanai
27  Kahului AP, Maui
27  Kawaihae Rd, 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 

 A cold front far northwest…thunderstorms far southeast


https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/GEOCOLOR/GOES17-HI-GEOCOLOR-600x600.gif

Low clouds being carried our way on the east-southeast winds

 

https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/13/GOES17-HI-13-600x600.gif

Some well developed cumulus clouds in our general area

 

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

It’s partly cloudy here in Maui County early this morning. The low temperature here at my place was 56 degrees.

It’s turned cloudy here in upper Kula, although looking down towards the beaches, there are hardly any clouds in contrast.

Late afternoon it’s partly cloudy, and we had a very brief light shower a couple of hours ago…here at my Kula weather tower.

540pm, the vog has arrived here in Maui County…moderately heavy at the time of this writing.

Weather Wit of the day:  Clouds and Rain – A frontal assault

 

>>> 2025 Hurricane Season Outlook

NOAA Central Pacific Hurricane Center and the Climate Prediction Center announced a 30% chance of below-normal tropical cyclone activity for the upcoming central Pacific Hurricane Season. The 2025 outlook also indicates a 50% chance of a near-normal hurricane season and a 20% chance that it will be above-normal.

In terms of storm numbers, the forecast calls for 1-4 tropical cyclones across the central Pacific, which is located north of the equator between 140°W and the International Date Line. A near-normal season has 4 or 5 tropical cyclones. Tropical cyclones include tropical depressions, tropical storms and hurricanes.

The outlook is a guide to the overall seasonal tropical cyclone activity in the central Pacific basin, and does not predict whether or how many of these systems will affect Hawaii. The central Pacific hurricane season begins June 1 and runs through November 30.

 

>>> Dry season (May through September 2025) outlook

— Probabilities (74%) favor ENSO-neutral conditions to persist through the summer and a 50% chance of continuing through October.

— NOAA Climate Prediction Center’s forecast probabilities and model consensus favor above normal precipitation across Kauai and Oahu, below normal precipitation for Big Island, and equal chances of above, below, and near normal precipitation across Maui County through much of the dry season. Toward the end of the dry season and into the start of the 2025–2026 wet season, the forecast shifts towards equal chances of above, below, and near normal precipitation as signals in forecast guidance weaken.

— Precipitation is inherently difficult to forecast during ENSO-neutral conditions due to a lack of a significant driver (El Niño or La Niña) directing the path of weather systems and more predictable impacts.

— April rainfall on Kauai and Oahu may help delay the onset of significant drought and significant wildfire risk. All of Maui County and the Big Island enter the dry season in moderate drought (D1) or worse, with a higher risk for drought continuing or worsening and a higher chance for significant wildfires.

— Impacts are expected to be the worst for non-irrigated agriculture, water systems dependent on surface water diversions, and residents relying on rainfall catchment.

 

Hawaii’s Broad Brush Weather Overview:  Moderate to breezy trades deliver clouds and showers to windward areas through the upcoming week. Localized areas of heavy rainfall may develop in the afternoons early this week and again toward the end of the week.

Hawaii’s Weather Details:  A relatively low stability environment prevails, a consequence of the weak upper low that has stagnated over the state during the last few days. This low has allowed pockets of heavy rain to develop over portions of leeward Big Island and Oahu during the last couple of days, as transient bands of trade wind moisture have capitalized on the softened inversion.

The islands reside between shower bands leaving little in the way of moisture to work with, as the last vestiges of cyclonic flow aloft depart to the northeast. Residing on the southwest periphery of said cyclonic flow, leeward Big Island may see another healthy convective response Monday, as another band of enhanced moisture transits the forecast area. This potentially amounts to nuisance type flooding, mainly limited to more flood prone areas.

Height rises then commence Tuesday as ridging builds during mid-week. This period of mid/upper subsidence will be brief and unlikely to make a considerable difference in the existing thermodynamic profile, but a temporary decrease in shower intensity is still likely, as increasing stability puts a firmer lid on convective depths.

During the latter half of next week, guidance indicates another low developing over, or in the vicinity of the islands. Of mid-latitude origin, this low will feature a notably colder mid-level cold pool, and has the potential to bring more meaningful instability to the area, as moderate to breezy trades persist at the surface.

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Here’s the latest Weather Map / Vog map animation

Hawaii’s Marine Environment:  A high pressure ridge will remain anchored north of the state through much of the upcoming week. A weakening cold front far northwest of the island chain will weaken this ridge over the next few days, producing more gentle to fresh east to southeast winds across the region. An upper level disturbance will keep brief periods of wet weather in the forecast for coastal and offshore waters, areas in the lee sides of island mountains may see periods of enhanced moderate to heavy showers.

Surf heights along south facing shores will hold at background levels, before a series of small south and south-southwest swells modestly boost south shore surf . A further boost up to seasonal averages are possible during the middle to latter part of the upcoming week.

Surf heights along north and west-facing shores will remain very small during the next 7 days. Surf heights along east-facing shores will remain choppy through the end of the upcoming week.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Caribbean Sea:  There are no active tropical cyclones

Gulf of Mexico:  There are no active tropical cyclones

Northeastern Pacific:  There are no active tropical cyclones

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

North Central Pacific:  There are no active tropical cyclones

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

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:  The Ocean May be Absorbing Less Carbon, But it May Not be Due to Climate Change – Yet

The ocean has absorbed about 30% of carbon dioxide emissions from human activities since the Industrial Revolution, significantly slowing the pace of climate change.

But as emissions continue to rise, scientists have warned that the ocean could eventually become too saturated with carbon to absorb more. Has the day arrived?

Using a computer simulation, CU Boulder oceanographer Nicole Lovenduski and her collaborators found that the recent slowdown in the ocean’s carbon absorption is likely a result of natural fluctuations instead of human-driven climate change. The study was published in Environmental Research Letters.

Read More: University of Colorado Boulder