The latest update to this website was 811am Tuesday (HST)

 

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

0.07  Mount Waialeale, Kauai
0.21  Ahuimanu Loop, Oahu
0.00  Molokai
0.00  Lanai 1, Lanai
1.00  West Wailuaiki, Maui
0.63  Pahoa, Big Island

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

13  Poipu, Kauai
25  Oahu Forest NWR, Oahu
25  Molokai AP, Molokai
25  Lanai 1, Lanai
23  Kealaloloa Rg, Maui
30  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…upper level low moving away to the west 

 

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

 Variable low clouds…along with higher clouds moving over the state from the southwest

 

 

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 Tuesday comments:  I’m here in Bend, Oregon with my friend Bob Earle.

It’s mostly cloudy here in Bend early this morning. The low temperature was 39 degrees.

Weather Wit of the day: Hibernation – Living on burrowed time

Interesting web blog: Mauka Showers – The 10th Anniversary of that Crazy Hurricane Season of 2015

>>> Highest Temperature Monday, November 3, 2025 – 96 near Mohawk, California
>>> Lowest Temperature Tuesday, November 4, 2025 – 15 near Grand Lake, Colorado 

 

Hawaii’s Broad Brush Weather Overview: A moderate trade wind flow will gradually become more stable today, as an area of low pressure west of Kauai moves steadily away. Showers will favor windward slopes, and while most leeward areas will be rather dry, spotty afternoon showers will develop along the Kona slopes of the Big Island. Trade winds will start to weaken on Thursday and will likely be disrupted on Friday, when a passing upper level disturbance is expected to produce isolated interior showers during the afternoon. A weakening cold front may move down portions of the island chain this coming weekend.

Hawaii’s Weather Details: A moderate and stable trade wind flow expected today. High pressure overhead will lead to a strengthening inversion that will produce stability, but the departing upper low will send a shield of high clouds over the island chain. The surface ridge north of the state will remain essentially unchanged and generate moderate trade winds. Models shows little organized moisture in the trade flow, which points toward modest windward and mountain rainfall, along with a few afternoon showers across the leeward slopes of the Big Island. Drier and more stable conditions favor a decrease in showers on Wednesday.

Trade winds will start to decline on Thursday, as an approaching North Pacific cold front weakens the surface ridge north of Hawaii. The ridge aloft over the islands will hang on through the day, suggesting continued stable conditions and limited rainfall.

Trade winds will likely become disrupted Thursday night and Friday as the front advances. A fast-moving upper-level trough passing over the island chain will lead to some instability, but moisture may be lacking. As a result, day time sea breezes will likely lead to spotty interior showers Friday afternoon.

The shallow and weakening cold front may reach Kauai sometime Saturday and drift over other portions of the island chain Sunday. Timing with this feature remains highly uncertain, and the GFS and ECMWF models show the aforementioned upper-level trough lifting to the northeast, with ridging aloft building over the islands during this time. Since the frontal band will be very weak with no upper support, rainfall will likely be confined to windward and north slopes with little threat for flooding.

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 high pressure ridge north of the Hawaiian Islands will build through Wednesday, slightly increasing the trade winds to locally strong levels tonight into Wednesday. A trough and upper level disturbance west of the offshore waters, will continue to produce isolated thunderstorms across the south and west offshore waters for a few more days. Moderate to fresh trade winds will strengthen slightly into the fresh to locally strong range through Wednesday, then steadily decline through Thursday, as the ridge weakens and drifts south in advance of an approaching cold front farther north of our area.

A large reinforcing short to medium period north swell will continue to decline. Surf heights will continue to fall as this north swell energy decreases. Winds and seas will remain below Small Craft Advisory criteria until Wednesday, when a combination of winds and seas will likely produce SCA conditions in most coastal waters and channel areas.

A gale low currently passing far north of the state will send us the next large medium period north-northwest swell. This swell will build into the Hawaii area and peak late Wednesday. Surf heights will exceed advisory thresholds along exposed north and west facing shores. Advisory level surf could hold into Thursday, before steady declining. A reinforcing north-northwest swell is possible on Friday, which should help maintain moderate surf on Friday.

In the long range, a deep low pressure system is expected to develop to our north and northeast Friday into Saturday. This low will likely send a large north-northeast (020-030 degree) swell late this coming weekend. Due to the swell angle, heavy surges will be possible along north facing harbors such as Kahului and Hilo on Sunday.

A large north-northeast swell on Sunday may bring advisory level surf along east facing shores on Sunday. South facing shores will remain small throughout this week. A small long-period south-southwest swell is possible Friday into the weekend, with a larger out of season south swell possible by 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

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

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 cyclones

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

North Central Pacific: There are no active tropical cyclones

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

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

 

Northwest Pacific Ocean: 

Tropical Cyclone 32W (Kalmaegi)…is located approximately 240 NM south of Manila, Philippines

https://www.metoc.navy.mil/jtwc/products/wp3125.gif

Tropical Cyclone 32W…is located approximately 216 NM east of Yap

https://www.metoc.navy.mil/jtwc/products/wp3225.gif

Southwest Pacific Ocean:  There are no active tropical cyclones

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

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:  Tracking River Pollution: A Novel Approach to Sampling

River pollution is a major threat to water quality and ecosystems, and understanding pollution sources and how they mix is vital to creating effective pollution management. Alex O’Brien tells us about a project testing a new approach to tracing where the pollution comes from…

I’m part of a team of scientists from UKCEH and the British Geological Survey (BGS) involved in a sampling campaign on the Thames to trial a novel integrated method to river sampling. We’re using this approach to investigate nutrient sources and in-stream processes related to pollution from three sources: combined sewer overflows (CSOs), sewage treatment works (STWs), and agricultural runoff.

The work is part of the NERC-funded large grant ‘SMARTWATER’, which is looking at pollution sources and events, how they impact river water quality in catchments, and how we can better predict and manage them.

Read More at: UK Centre for Ecology & Hydrology

Drone imagery of sampling in action.