Glenn James
Hawaii Weather Today
Creator, Author, and Administrator for 30 years

 

The last update to this website was at 1120am Tuesday HST


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

3.15  Mount Waialeale Kauai
1.45  Tunnel RG, Oahu
0.20  Puu Alii, Molokai
0.09  Lanai City, Lanai
1.57  West Wailuaiki, Maui
3.25  Piihonua, Big Island


The following numbers represent the strongest wind gusts (mph) Tuesday morning:

14  Lawai, Kauai – NE 
23  Oahu Forest NWR, Oahu – SE
24  Makapulapai, Molokai – E 
25  Lanai 1, Lanai – NE
24  Maalaea Bay, Maui – NNE
25  Kawaihae Rd, Big Island – NE


Hawaii’s Mountains – Here’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii. Here’s the webcam for the (~10,023 feet high) Haleakala Crater 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

Upper level trough just north…thunderstorms far south 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20261181010-20261181800-GOES18-ABI-HI-GEOCOLOR-600x600.gif

 Some well developed cumulus clouds associated with an upper trough just north 

 

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…a few are heavy 

 

https://www.weather.gov/wwamap/png/hfo.png

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 my friend Linda’s house, along with my friend Bob, in Corte Madera, Marin County, California, continuing on in my working vacation.

935am Hawaii time, Bob left, and as usual Linda and I are feeling the lack of his great presence. The weather is beautiful today, nice and warm but not the least bit too warm. I still have 6-days left of my time here in CA, before I fly back to Maui next Tuesday morning.

 

>>> Highest Temperature Monday, April 27, 2026 – 106 degrees at Rio Grande Village, TX
>>> Lowest Temperature Tuesday, April 28, 2026 – minus 3 degrees near Mackay, ID

 

Hawaii’s Broad Brush Weather Overview…as of Tuesday morning: Moderate easterly trade winds will continue into early next week. An upper level trough approaching the islands will deepen into an upper low just north of Kauai today. This upper disturbance will pass slowly through the region and then linger northeast of the state into the weekend.

Expect periods of enhanced clouds and showers through the week. Shower activity will favor windward mountain areas in the overnight to early morning hours, with brief periods of showers drifting into leeward areas. Locations sheltered from the moderate easterly trades could see increased clouds and a few showers during the afternoons.

Weather Details for the Hawaiian Islands…as of Tuesday morning: Satellite imagery shows the upper level trough moving into the western islands, which continues to deepen into an upper level low, and is forecast to track slowly eastward through the island chain. This upper low will lift subsidence temperature inversion heights, and enhance clouds and showers across the state.

Windward mountains will see the greatest shower activity during the overnight to early morning hours, while terrain sheltered leeward western mountains will see sea breeze trade wind convergence zones, triggering enhanced showers during the afternoon hours each day.

The upper low and trailing upper trough will slow down and remain just northeast of the Hawaiian Islands into the weekend. The upper level lift just upstream of the islands will keep inversion and cloud heights elevated, allowing periods of showers to continue through the week.

Only subtle day to day changes in island weather patterns are expected. This wet trade wind pattern may linger into the first half of next week, as a shallow cold front and upper level trough approach the islands from the northwest. The wet season continues into the first week of May.


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 / Looping Surface Precipitation…through the next 8-days / Vog Map

 

Marine Environmental Conditions…as of Tuesday morning: Moderate to fresh east-northeast trades will continue, before strengthening late tonight into Wednesday, as a weak trough shifts to the west and a ridge builds north of the state. This will likely correspond to Small Craft Advisory winds across the typically windier waters surrounding Maui County and the Big Island beginning Wednesday.

A small rise in surf is expected with the arrival of a small northwest swell. An upward trend is expected during the second half of the week, as another northwest swell arrives. Looking further ahead, a storm-force low east of Japan will send a moderate, longer-period northwest swell toward the islands Friday and Saturday, with surf heights potentially approaching advisory levels along exposed north and west facing shores.

Surf along south-facing shores will remain small through much of the week, with mainly background south to southwest swells expected. Another south-southwest pulse may arrive by the weekend, from recent activity within our swell window east of New Zealand, providing a small increase in surf.

Surf along east-facing shores will remain relatively small and choppy through mid-week, with a slight rise possible later in the week as trades strengthen.

 

Hawaii-Mountains


World-wide Tropical Cyclone Activity


>>> Here’s a link to the latest Pacific Disaster Center’s Weather Wall


>>> 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

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

 

>>> Eastern Pacific: There are no active tropical cyclones

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

>>> 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 Oceans / Arabian Sea: There are no active tropical cyclones



Interesting:  Older and Wiser: How Elder Animals Help Species to Survive

When drought grips the African savanna, an aging elephant matriarch leads her herd to water she remembers from decades past. In the cold Pacific, an older killer whale guides her pod to elusive salmon, sharing her catch when prey runs thin. And over the open ocean, a seasoned albatross traces vast, invisible routes it has refined over years, returning unerringly to feed its chick.

Across land, sea, and sky, these animals deploy memory, skill, and experience accumulated over long lives. So what happens when such older individuals are selectively removed through hunting, fishing, or other human pressures? Researchers say the loss may not be immediately visible, but it is profound: The knowledge that underpins population survival begins to disappear.

For decades, conservation has focused on numbers: how many animals remain in a population. But a growing body of research suggests this lens is too narrow, and that the loss of older animals can reshape populations in ways that simple counts fail to capture. “Not all individuals contribute equally,” says Keller Kopf, a senior lecturer at Charles Darwin University in Australia. “Older animals play roles that are often invisible in simple population counts.”

Read More at: Yale Environment 360