The latest update to this website was at 939pm Monday (HST)

 

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

1.56  Makaha Ridge, Kauai
0.06  Luluku, Oahu
0.00  Molokai
0.00  Lanai
0.16  West Wailuaiki, Maui
1.16  Glenwood, Big Island

The following numbers represent the strongest wind gusts (mph) as of Monday afternoon:

16  Port Allen, Kauai
24  Honolulu AP, Oahu
31  Molokai AP, Molokai
27  Lanai 1, Lanai
32  Na Kula, Maui
28  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/GOES18/ABI/SECTOR/tpw/13/GOES18-TPW-13-900x540.gif

Thunderstorms in the deeper tropics…cold front northwest…Tropical Cyclone Sonia far east-southeast 

 

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

 Variable low clouds…along with deeper clouds in the vicinity

 

 

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 are heavy 

 

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

 

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Monday comments:  I’m here at my friend Linda’s house in Corte Madera, Marin County, California

It’s partly to mostly cloudy here in Marin County early this morning. The low temperature was 44 degrees, although the temperature had risen to 50 before dawn.

The clouds early this morning have evaporated, leaving mostly skies early this afternoon .

Weather Wit of the day: Fall – When the days get shorter and the faces get longer

Interesting Blog: Mauka Showers – Flash Floods in Hawaii – NWS Short Lead Time Products

>>> Highest Temperature Sunday, October 26, 2025 – 98 near El Centro, CA
>>> Lowest Temperature Monday, October 27, 2025 – 17 near White Sulphur Springs, MT

 

Wet Season (October 2025 through April 2026) Outlook

> From NOAA’s Climate Prediction Center (CPC): La Niña Advisory in effect. La Niña conditions emerged in September 2025 and are expected to continue through the January – February 2026 period, with a transition to ENSO neutral likely in the January – March 2026 period (55% chance). Probabilities favor a weak La Niña event (Niño-3.4 index value at or between -0.5°C and -0.9°C).
> Rainfall forecast: Consistent with a cold-season La Niña event, the climate model consensus supports enhanced probabilities for above normal rainfall through early spring 2026, with the greatest probabilities over the northwestern half of the state.
> Rainfall amount and distribution can be influenced by the strength of La Niña
> Weaker La Niña events have generally favored above normal rainfall during winter in Hawaii in recent decades (since 1980s), with the potential for more weather systems capable of producing widespread significant rainfall.
> However, weak La Niña events do not necessarily result in Hawaii’s wettest wet seasons on record.
> Moderate to strong events have favored below normal rainfall in general, with greater trade wind frequency, focusing rain on windward slopes.

 

Hawaii’s Broad Brush Weather Overview: Trades will gradually weaken over the next several days. An upper level low/trough will help bring increased instability to the western end of the state, enhancing the chance for heavier showers through Tuesday. A few thunderstorms are possible but expected to remain offshore.

Hawaii’s Weather Details: Satellite and radar imagery shows a large area of showers associated with an extensive cloud shield moving northward. While the cloud shield covers the whole state, showers are mostly occurring over Kauai and Oahu, with some windward and mountain locations elsewhere are also getting some showers riding in on the trades.

An upper level low west has helped to keep a few offshore thunderstorms going. This low will move NE through tonight and weaken into a trough. It will then become nearly stationary over the state, bringing enhanced instability to the region. There is a slight chance for thunderstorms over/near Kauai and Niihau over the next couple of days, due to the cold air aloft associated with this trough. Models also indicate enough instability developing over the Kona side of the Big Island Wednesday afternoon, to warrant a mention of thunderstorms.

Wednesday, the trough will form a new closed low to our southwest, due to the influence of an upper ridge asserting itself eastward to our north. The low will move SW, away from the state. At the same time, a large central Pacific trough will move down the east side of the ridge, and may even push a front into or through the area late next weekend. Models have yet to come into agreement on the evolution of this system, and at this time range, that’s to be expected.

At the surface, a series of high pressure centers to our north will move from west to east, keeping us in a trade wind pattern. Windward and mountain showers will be favored, with some limited spillover to leeward sides.

Fire weather: Low-level moisture is expected to be high enough this week to keep RH values above critical levels. Trade winds will still be present, but weaker, in the coming days. Temperature inversion heights will range from 6,500 to 7,500 ft for the time being.

Here’s a near real-time Wind Profile of the Pacific Ocean – 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: Weak high pressure far northeast will remain stationary, as a front stalls and weakens north of the area through mid-week. Moderate to locally fresh trade winds will prevail through the forecast period. A weak ridge will push into the northern offshore waters through the latter half of the week, before another front approaches.

Surf along north facing shores should see a gradual increase as a short to medium period north-northwest (330-340 degrees) swell fills in and peaks before declining Tuesday. As this swell fades on Wednesday, a moderate short-period north swell will produce a brief boost in north shore surf.

Since the storm generating the swell will be compact and fast-moving, there is some uncertainty as to the potential surf height. Model guidance for north swells have trended towards a low bias, so surf heights may come in higher then projected. Stay tuned for more details. A new northwest swell will bring surf heights near advisory levels by the weekend along exposed north and west facing shores.

Surf along east facing shores will remain small to moderate as the trade winds ease. Although, shorelines exposed to the north swell on Wednesday may see an increase in surf. South facing shores will experience mainly small background swell through the week.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclone

Tropical cyclone formation is not expected during the next 7-days.

 

Caribbean Sea: 

Tropical Cyclone Melissa…is located about 325 miles southwest of Guantanamo, Cuba

CATEGORY 5 MELISSA MOVING SLOWLY WEST-NORTHWESTWARD AND EXPECTED TO TURN NORTHWARD LATER TODAY…CATASTROPHIC AND LIFE-THREATENING WINDS, FLOODING, AND STORM SURGE EXPECTED ON JAMAICA TONIGHT AND EARLY TUESDAY

cone graphic

According to the NHC advisory number 25A

Melissa is a category 5 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity are likely before Melissa makes landfall on Jamaica on Tuesday. However, Melissa is expected to reach Jamaica and southeastern Cuba as an extremely powerful major hurricane, and will still be at hurricane strength when it moves across the southeastern Bahamas. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 195 miles (315 km). The minimum central pressure estimated from the latest Air Force Reserve Hurricane Hunter aircraft data is 906 mb (26.76 inches).

 

Gulf of America:  There are no active tropical cyclone

Tropical cyclone formation is not expected during the next 7-days.

 

Northeastern Pacific: 

Tropical Cyclone 18E (Sonia)…is located about 965 miles southwest of the southern tip of Baja CA

SHEARED SONIA MOVING WESTWARD

cone graphic

According to the NHC advisory number 12

Sonia is moving toward the west near 7 mph and this motion is expected to continue during the next few days. Maximum sustained winds are near 45 mph with higher gusts. Gradual weakening is forecast during the next couple of days, and Sonia is expected to become a post-tropical remnant low Tuesday or Wednesday. Tropical-storm-force winds extend outward up to 45 miles from the center. The estimated minimum central pressure is 1004 mb (29.65 inches).

 

North Central Pacific: There are no active tropical cyclone

Tropical cyclone formation is not expected during the next 7 days.

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: 

Tropical Cyclone 03B (Montha)…is located approximately 638 NM south-southwest of Kolkata, India

https://www.metoc.navy.mil/jtwc/products/io0325.gif

 

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:  Scientists Identify Potential Climate Solutions in “Grassy Trees”

Bamboo, palm, and banana trees look and act like trees, but are actually closer to grasses in how they grow because—unlike trees—their stems do not grow wider over time. However, due to their towering structure, scientists struggled with how to both classify them and to fully understand their biology—and benefits.

A new analysis by New York University scientists offers a clearer picture of these organisms, labeling them “grassy trees,” which combine the canopy structure of trees with the resilience of grasses—and can more easily adapt to and recover from extreme weather conditions than can trees.

“Bamboo, palms, and bananas, which don’t fit neatly as ‘trees’ or ‘grasses,’ are actually a powerful group of plants we call ‘grassy trees’ that combine the best of both worlds,” explains Aiyu Zheng, a researcher at New York University’s Department of Environmental Studies and the lead author of the analysis, which appears in the journal Trends in Ecology and Evolution. “Their hybrid nature—combining the tall structures of trees with the rapid growth of grasses—makes grassy trees powerful allies in responding to climate change.

“They bounce back quickly after fires, storms, or harvesting—and they help restore landscapes, store carbon, support biodiversity, and sustain communities. Their benefits stretch from food and jobs to renewable materials and green energy.”

Read More: New York University