The latest update to this website was at 930pm Saturday (HST)

 

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

1.73  Mount Waialeale, Kauai
0.53  Schofield East, Oahu
0.80  Puu Alii, Molokai
0.05  Lanai City, Lanai
1.70  Waikomoi Treeline, Maui
0.76  Saddle Quarry, Big Island

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

29  Port Allen, Kauai
35  Waianae Valley, Oahu
32  Molokai AP, Molokai
29  Lanai 1, Lanai
43  Na Kula, Maui
36  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 mostly just northwest of the state…cold front far northwest 

 

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

High and middle level clouds over the Big Island…along with developing cumulus cloud northwest of Kauai

 

 

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 

 

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

 

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Saturday comments:  I’m home here in upper Kula, Maui, Hawaii.

It’s partly to mostly cloudy with localized showers here in Maui County early this morning. The low temperature at my place was 59 degrees…with a relative humidity of 84%.

935am, lots of large clouds around, with showers falling locally…and rainbows!

I played 4-games of Pickleball in Haiku, and then shopped at Mana Foods in Paia, on the way home to here in upper Kula.

930pm, clear to partly cloudy from what I can tell here in upper Kula, with the temperature 60.6 degrees here at my weather tower…and the RH is 80%

Weather Wit of the day: Winter – The freezin’ season

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

>>> Highest Temperature Saturday, October 18, 2025 – 100 near La Puerta, Texas
>>> Lowest Temperature Saturday, October 18, 2025 – 16 near Cheney, WA

 

Hawaii’s Broad Brush Weather Overview: An upper-level low currently northeast of the Hawaiian Islands will move south over the next several days, which will maintain relatively unstable conditions. Moderate to locally breezy trades will also continue into tonight. This combination will continue to bring enhanced showers and a slight chance of thunderstorms throughout the next couple of days.

Hawaii’s Weather Details:  Satellite imagery continues to show thunderstorm activity north and west of Kauai and Niihau, which is forecast to move further westward and away, while extensive cloud cover blankets Maui and the Big Island.

Observations over the past few hours have indicated that light precipitation has fallen over the Hawaiian Islands, with the heaviest fallen over parts of Maui and western portions of Molokai. Trends suggest that additional precipitation is expected, primarily across the windward and mountain areas for all islands through early Sunday morning before clearing during the day.

Moderate to locally breezy trades continue today into tonight, maintaining enhanced shower activity across windward and mountain areas. Winds thereafter begin to ease to a light to locally moderate pattern persisting through mid-week. Trades strengthen toward the latter end of next week through the weekend.

Model guidance of the GFS and ECMWF also continues to depict an upper-level trough will remain over the vicinity of the Hawaiian Islands, sustaining unstable conditions. Within this trough remains two individual closed low circulations that have been steering the state’s weather these last couple days. One is situated to the west of the island chain and will move westward away, while the second is positioned northeast of the islands.

This second closed low will end up centered very close to the islands by Wednesday, however, latest guidance has depicted the circulation to stay east of the islands at this time, while propagating southward through the remainder of the outlook period.

Much of the coldest air aloft has been forecast to remain north of the island chain, limiting any thunderstorm potential, however, model guidance does hint at periods of enhanced shower activity throughout the week, in conjunction with the wet trades pattern.

Fire weather:  Wind speeds and afternoon minimum humidity levels will remain below critical fire weather thresholds through the forecast period. Unstable conditions will continue to produce wet weather across the state through early next week. Temperature inversion heights near Maui and the Big Island will range from the 8,500 to 9,500 feet 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:  Moderate to locally strong trades will remain in place over the Hawaiian coastal waters. Trades then weaken into the moderate to locally fresh range through early next week. An upper low north of Kauai will continue to drift over the northern waters through the weekend, keeping a slight chance of thunderstorms in the forecast.

Two moderate, long-period NW and NNW swells moving across the waters will maintain elevated surf along N and W facing shores and then trend down on Sunday. A hurricane force low E of Japan will bring another round of moderate, long-period NW (330 deg) swell into the islands towards the middle of next week, leading to building surf along N and W facing shores. This next long-period swell may reach low-end High Surf Advisory thresholds Wednesday into Thursday.

A series of small, medium-to long-period S to SW swells will filter into the area this weekend keeping surf along S facing shores from going flat. Short-period surf along E facing shores increases slightly on Saturday, due to the stronger trades, then trends down slightly Sunday through early next 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:  There are no active tropical cyclone

East of the Windward Islands and the Caribbean Sea

Invest 98L

>>> A tropical wave located a couple of hundred miles east of the Windward Islands is producing a large and persistent area of showers and thunderstorms. Recent satellite-derived wind data indicate that the system still lacks a closed circulation, but is producing winds of 30 to 35 mph north and east of the wave axis. Environmental conditions are expected to limit development during the next couple of days as the system moves quickly westward at 20 to 25 mph, bringing heavy rainfall and gusty winds to the Windward Islands beginning later today and continuing through Monday morning. By the middle to latter part of the week, environmental conditions are forecast to become more conducive for development, and a tropical depression could form while the system slows down over the central Caribbean Sea.

* Formation chance through 48 hours…low…10 percent
* Formation chance through 7 days…medium…50 percent

 

Gulf of America:  There are no active tropical cyclone

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

 

Northeastern Pacific:  There are no active tropical cyclone

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

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: 

Tropical Cyclone 30W (Fengshen) is located approximately 38 NM southeast of Manila, Philippines

https://www.metoc.navy.mil/jtwc/products/wp3025.gif

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean:  There are no active tropical cyclones

South Indian Ocean:

Tropical Cyclone 04S (Chenge) is located approximately 173 NM west-southwest of Diego Garcia

https://www.metoc.navy.mil/jtwc/products/sh0426.gif

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:  World Reaches a Climate ‘Tipping Point,’ Imperiling Coral Reefs

Scientists say that warming has breached a critical threshold for tropical coral reefs, which are expected to see catastrophic losses in the years ahead. They warn that if warming continues unchecked, the world will cross other climate “tipping points,” destabilizing ice sheets, disrupting ocean currents, and causing irreversible damage to the Amazon rain forest.

The Earth has warmed by at least 1.3 degrees C since the pre-industrial era, surpassing the point at which warming is expected to inflict widespread damage on reefs in warm, shallow, sunlit waters. The loss of reefs would have ramifications for the hundreds of millions of people worldwide who depend on them for food or income, according to a landmark new report authored by 160 scientists in 23 countries. The report says that countries must work to preserve any surviving reefs by protecting them from pollution and over fishing.

The world already risks the collapse of the massive West Antarctic Ice Sheet, according to the report. And if warming breaches 1.5 degrees C, the stated goal of the Paris Agreement, humanity may also face a mass die back of the Amazon rain forest and the collapse of a vital Atlantic current.

Read more at: Yale Environment 360