The latest update to this website was at 455am Tuesday (HST)

 

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

2.23  N Wailua Ditch, Kauai
0.04  Lyon, Oahu
0.00  Molokai
0.00  Lanai
0.04  West Wailuaiki, Maui
1.03  Lalamilo, Big Island

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

14  Lawai, Kauai
27  Oahu Forest NWR, Oahu
21  Makapulapai, Molokai
20  Lanai 1, Lanai
24  Kealaloloa Rg, Maui
22  Kawaihae, 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 high 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 Tuesday comments:  I’m here at my friend Linda’s house in Corte Madera, Marin County, California

It’s clear here in Marin County early this morning. The low temperature was 44 degrees.

Weather Wit of the day: Fall Colors – An Oct. of God

>>> Highest Temperature Monday, October 27, 2025 – 100 near El Centro, CA
>>> Lowest Temperature Tuesday, October 28, 2025 – -8 near Peter Sinks, Utah

 

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: Partly to mostly cloudy conditions with intermittent rain and breezy trades will prevail the next couple of days. The probability of isolated thunderstorms will exist in the vicinity of Kauai and Oahu and their surrounding coastal waters today.

An approaching cold front will weaken trades tonight through Wednesday but will become breezy again by late week, as high pressure to the north passes into the eastern Pacific. The weather pattern may become more overcast and wet early next week, in response to an early November development of an upper trough in the proximity of the state.

Hawaii’s Weather Details: Satellite imagery shows a wide array of various level clouds as a weakness on upper ridging across the Hawaiian Isles maintains unsettled conditions. Most of the overnight precipitation has been focused over the western third of the state, where Kauai has received most of the action. A quick one to two inches and responding streams across the Garden Isle has a short fuse Flood Advisory in effect.

An approaching cold front nearing our far northwestern offshore waters is stalling and backing high pressure behind it will maintain a tight enough downstream gradient to support gentle to moderate trades the remainder of the week. The passage of the subtropical jet stream across the state to the east through early Wednesday, will allow for the transport of more moisture rich air to carry over in the form of a primarily broken cloud shield.

A more organized trough is developing between the two ridges on either side of the island chain. The trough is forecast to deepen and allow cold air aloft to sink down over the region through Wednesday morning or afternoon. This cooler air atop warm, humid lower level air moving up on the eastern flank of the trough, will destabilize the atmosphere and introduce a possible threat for isolated thunderstorms.

The greatest probability or heavy rainfall and lightning will be across the northern coastal waters…with a slight chance that either Kauai or Oahu gets clipped by a passing storm. The trough may deepen enough to pinch off a cut off upper level low south of the islands by Thursday. If this occurs, the threat for more organized rain and/or thunderstorms will shift far south of the state.

Most of us across the majority of the island chain will experience a partially to mainly overcast Tuesday through Thursday, with most of the more frequent trade showers focusing along windward sides and within higher terrain.

Drier air begins to work into the area along trade winds late in the week. Upper ridging attempts to expand in from the west, but troughing will hold on over the area going into the weekend. It will be relatively drier Friday and Saturday, but various clouds at different levels will still cover the state. An early November cold front may have enough steam to reach the northern coastal waters over the weekend and back winds more northerly by Sunday.

Model guidance is in disagreement with the strength of the associated upper trough as it travels east across the north central Pacific. Keeping rain chances higher over the northern latitudes early next week, to account for the moderate possibility of a lower level trough/front hanging up north of the state, providing the necessary convergence to trigger statewide showers.

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: A weak front will approach and stall just north of the state into Wednesday. A deepening upper level trough will keep isolated thunderstorms in the coastal waters and offshore waters through Wednesday. During this time a moderate high far northeast of the state will maintain moderate to locally fresh trades. A weak ridge will move into the northern offshore waters later this week, before another front approaches and moves over the state by the weekend.

A reinforcing small, short period north-northwest (330-340 degree) swell has filled in and will keep surf up along north facing shores. An incoming small to moderate, short-period north-northwest (330-350 degree) swell will produce another bump in north shore surf tonight into Wednesday. A new moderate to large, medium to long period north-northwest (330-360 degree) swell could bring above advisory level surf over the weekend along exposed north and west facing shores. Model guidance for north swells have trended towards a low bias so surf heights, and may come in higher than predicted.

Surf along east facing shores will remain small to moderate as the trades ease. South facing shores will continue to see mainly small background swells 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 265 miles southwest of Guantanamo, Cuba

EYE OF EXTREMELY DANGEROUS CATEGORY 5 MELISSA APPROACHING WESTERN JAMAICA…CATASTROPHIC WINDS, FLASH FLOODING, AND STORM SURGE EXPECTED ON THE ISLAND TODAY

cone graphic

According to the NHC advisory number 28A

Melissa is moving toward the north-northeast near 7 mph (11 km/h). A turn toward the northeast with an increase in forward speed is expected later today, followed by a faster northeastward motion on Wednesday and Thursday. On the forecast track, the core of Melissa is expected to make landfall on Jamaica during the next several hours, move across southeastern Cuba Wednesday morning, and move across the southeastern or central Bahamas later on Wednesday. Maximum sustained winds are near 175 mph (280 km/h) with higher gusts. Melissa is a category 5 hurricane on the Saffir-Simpson Hurricane Wind Scale. Little change in strength is expected before Melissa makes landfall on Jamaica. Melissa is expected to reach Jamaica and southeastern Cuba as an extremely dangerous major hurricane, and it 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). During the past few hours, Norman Manley International Airport in Kingston, Jamaica, reported a sustained wind of 43 mph (69 km/h) and a gust of 59 mph (93 km/h). Also during the past few hours, Sangster International Airport in Montego Bay, Jamaica, reported a sustained wind of 38 mph (61 km/h) and a gust of 54 mph (87 km/h). The estimated minimum central pressure is 901 mb (26.61 inches). An Air Force Reserve Hurricane Hunter aircraft is enroute to investigate Melissa.

 

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 990 miles southwest of the southern tip of Baja CA

SONIA REMAINS A TROPICAL STORM

cone graphic

According to the NHC advisory number 14

Sonia is moving toward the west-northwest near 7 mph. A turn toward the west is expected later tonight or Tuesday, followed by a gradual increase in forward speed during the next couple of days. Maximum sustained winds are near 40 mph with higher gusts. Gradual weakening is forecast during the next couple of days, with Sonia expected to become a post-tropical remnant low on 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 572 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