The latest update to this website was at 642am Thursday (HST)

 

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

0.11  Mount Waialeale, Kauai
0.43  Kalawahine, Oahu
0.43  Honolimaloo, Molokai
0.03  Lanai AP, Lanai
0.20  Kula 1, Maui
0.46  Puu Waawaa, Big Island

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

12  Lawai, Kauai
20  Oahu Forest NWR, Oahu
23  Makapulapai, Molokai
22  Lanai 1, Lanai
31  Kealaloloa Rg, Maui
36  Puuloa, 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

 Cold front far northwest…a few thunderstorms south…Tropical Cyclone Octavo far east-southeast towards Mexico 

 

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

Well developed cumulus clouds to the south

 

 

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

It’s mostly clear with some clouds here in Maui County early this morning. The low temperature at my place was a chilly 52.5 degrees…with a relative humidity of 82%.

Weather Wit of the day: Pea Soup Fog – A case of mist takin’ identity

>>> Highest Temperature Wednesday, October 1, 2025 – 101 at Rio Grande Village, Texas
>>> Lowest Temperature Thursday, October 2, 2025 – 23 at Angel Fire, New Mexico

 

Hawaii’s Broad Brush Weather Overview: Gentle to moderate east-southeast winds will continue through Friday night, in response to an approaching cold front in the North Central Pacific, allowing localized daytime sea breezes and overnight land breezes through Friday night. Moderate trades may build back this weekend into early next week, as a new high builds north of the state.

Hawaii’s Weather Details:  Gentle to moderate east-southeast winds will continue through Friday night in response to an approaching cold front in the North Central Pacific. Atmospheric soundings show conditions aloft remain stable with a 7,000 to 8,000 feet inversion across the state.

Infrared satellite and radar show low clouds and a few showers tracking in a southeast to northwest direction, occasionally impacting windward slopes. Most showers are passing north and south of the islands, likely from downstream partial blockage from the Big Island. Showers will taper off, while mostly sunny to partly cloudy skies prevail for leeward locations.

The light wind flow and Big Island blockage will allow localized sea breezes and interior cloud build ups and showers over the islands this afternoon. Land breezes will clear out the islands tonight, followed by a diurnal repeat Friday and Friday night.

Downstream convergence along the leeward sides of island mountains could produce plumes of clouds and showers that extend west to northwest from each island, and could anchor showers over windward and southeast sides of the smaller islands at times, overriding the land breeze suppression.

Guidance indicates that easterly trades will build back this weekend and early next week, as a new high develops and strengthens far north of the state. However, global models differ significantly regarding the development of a trough northeast of the islands by the middle of next week. This could cause significant differences in the wind and shower regimes near the end of the 7-day forecast.

Fire weather:  Wind speeds will remain below critical fire weather thresholds for the next 7-days. Temperature inversion heights across the state will range from 7,000 to 8,500 feet.

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:  Surface high pressure northeast will continue to drift east through the end of the week, as a trough passes by far north. The current gentle to locally fresh trade winds will veer east- southeast and trend lighter through Saturday, giving way to localized land and sea breezes over leeward waters. High pressure will build in from the northwest allowing moderate to locally fresh trade winds to return this weekend, holding through the forecast period.

A small, medium to long period northwest (300 deg) swell from former Tropical Cyclone Neoguri has begun to fill in, and will peak before declining through Friday. A moderate, medium period north-northwest (330 deg) swell generated from the current low tracking across the northwest Pacific, is expected to fill in on Saturday, peak Sunday just below High Surf Advisory (HSA) criteria for north facing shores, and slowly fade into early next week. Another small, medium to long period swell from the northwest (320 deg) is expected to fill in Monday, peak Tuesday and decline through the middle of next week.

The current small, medium period southwest (210 deg) swell has filled in and will peak, before fading Friday. Another small, long period southwest (210 deg) swell is expected to rise late Friday through Saturday, before declining into early next week. Surf along east-facing shores will remain below average into early next week.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:

Post-Tropical Cyclone 09L (Imelda)…is located about 315 miles east-northeast of Bermuda

IMELDA BECOMES A STRONG EXTRATROPICAL CYCLONE OVER THE CENTRAL ATLANTIC

According to the NHC advisory number 24

The post-tropical cyclone is moving toward the east-northeast near 29 mph, and this general motion is expected to continue through tonight. A northeastward motion is then forecast on Friday and Saturday. Maximum sustained winds are near 75 mph with higher gusts. Gradual weakening is forecast over the next few days, but the post-tropical cyclone will remain a large and powerful system as it moves across the central Atlantic. Hurricane-force winds extend outward up to 45 miles from the center, and gale-force winds extend outward up to 310 miles. The estimated minimum central pressure is 980 mb (28.94 inches).

cone graphic

 

Central Tropical Atlantic:

>>> A tropical wave is expected to move off the coast of Africa over the next day or two. Thereafter, this wave is forecast to interact with another disturbance in the eastern tropical Atlantic, and some slow development of the combined feature is possible as the system moves westward to west-northwestward at 15 to 20 mph.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…20 percent

 

Southwestern Atlantic:

>>> An area of low pressure may form along a remnant frontal boundary near the northwestern Bahamas and southern Florida over the next couple of days. Any additional development is expected to be slow to occur as the system moves northwestward across the Florida Peninsula and into the Gulf of America.

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

Caribbean Sea:  There are no active tropical cyclone

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

Gulf of America:  There are no active tropical cyclones

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

 

Northeastern Pacific: 

Tropical Cyclone 15E (Octave)…is located about 915 miles southwest of the southern tip of Baja CA 

OCTAVE SHOWING LITTLE CHANGE IN STRENGTH

According to the NHC advisory number 10

Octave is moving toward the west-northwest near 8 mph and this general motion is expected to continue for the next couple of days. Maximum sustained winds are near 65 mph with higher gusts. Little change in strength is forecast during the next 48 hours. Tropical-storm-force winds extend outward up to 45 miles from the center. The estimated minimum central pressure is 996 mb (29.42 inches).

cone graphic

                

Offshore  of the Southwest Coast of Mexico:

>>> A trough of low pressure located a few hundred miles off the coast of southern and southwestern Mexico is producing a large area of disorganized showers and thunderstorms. Environmental conditions appear conducive for gradual development, and a tropical depression is likely to form by the weekend while the system moves generally west-northwestward, remaining parallel to but offshore of the southwestern coast of Mexico. Interests along the southwestern coast of Mexico should closely monitor the progress of this system.

* Formation chance through 48 hours…medium…50 percent
* Formation chance through 7 days…high…90 percent

 

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 27W (Matmo)…is located approximately 239 NM east-northeast of Manila, Philippines

https://www.metoc.navy.mil/jtwc/products/wp2725.gif

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean: 

Tropical Cyclone 01B…is located approximately 278 NM southwest of Kolkata, India – Final Warning

https://www.metoc.navy.mil/jtwc/products/io0125.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:  The Fattening Forest: Trees of the Amazon are Getting Bigger

Average tree size across the Amazon has increased by 3.2% every decade consistent with a response to rising carbon dioxide levels, a new study suggests.

The new research published in Nature Plants by a global team of tropical forest scientists shows that the average size of trees in Amazon forests has increased over recent decades. The team of almost a hundred researchers monitored the size of trees in 188 permanent plots and discovered that the increase has continued for at least 30 years.

The study is the result of an international partnership of more than 60 universities in South America, the UK and beyond – including the Universities of Birmingham, Bristol, and Leeds.

Read more at: University of Birmingham