The latest update to this website was at 816am Tuesday (HST)

 

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

3.08  Mount Waialeale, Kauai
0.40  Waihee Pump, Oahu
0.09  Honolimaloo, Molokai
0.06  Lanai AP, Lanai
0.46  Hana AP, Maui
1.18  Mamalahoa, Big Island

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

09  Lawai, Kauai
18  Oahu Forest NWR, Oahu
21  Makapulapai, Molokai
18  Lanai 1, Lanai 
18  Honoapiilani, Maui
14  Kealakomo, 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

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Cold front northwest…thunderstorms south

 

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

 Variable low clouds over the islands…higher clouds over Oahu, Maui County and the Big Island

 

 

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Showers locally…mostly over the eastern islands 

 

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 Corte Madera (Marin County, CA) at my friend Linda’s place

It’s partly cloudy…with a low temperature of 41.5 degrees.

Weather Wit of the day: Flood Zone – Field of streams

>>> Highest Temperature Monday, November 17, 2025 – 94 at La Puerta, Texas
>>> Lowest Temperature Tuesday, November 18, 2025 – 6 at Big Bay, MI

 

Hawaii’s Broad Brush Weather Overview: An upper level low southwest of the islands will pull moisture over the eastern half of the state. This feature, along with a developing surface trough, will bring an increased chance of heavier showers Tuesday night through Wednesday, especially for windward portions of Maui and the Big Island.

The chance of heavy rainfall diminishes late Wednesday into Thursday, though breezy showery trades will persist. A brief period of stable and drier trade wind conditions is expected on Friday, followed by more showery weather into the weekend, as a cold front advances toward the island chain.

Hawaii’s Weather Details: Latest satellite imagery shows thick mid to upper level clouds streaming in from the southwest from Oahu to the Big Island causing overcast conditions. Near the surface, moderate trades continue to push typical scattered showers along windward and mountain areas, especially over the western end of the state as evident on radar.

Meanwhile on the eastern end of the state some showers are beginning to fall across east and southeast portions of the Big Island. With freezing levels around 13,000 to 14,000 feet a wintry mix of rain and snow at the summits of Mauna Loa and Mauna Kea is possible. A Winter Weather Advisory remains in effect through 6pm this evening.

An upper level trough to the northwest deepens and a surface trough to the southwest of the Big Island, will continue to produce unstable conditions aloft. This is conducive to some heavy rain developing south of the Big Island, in association with the aforementioned surface trough. However, uncertainty remains an issue. The GFS is still a little more bullish with the intensity than the ECWMF, though it has been trending slightly weaker with the last couple runs.

This pocket of deep moisture should lift northward late tonight into Wednesday, causing conditions to deteriorate further for windward portions of the Big Island and Maui. Strong trades, combined with deep moisture and instability aloft, may lead to a periods of heavy rainfall for these areas and a Flood Watch may be needed late tonight through Wednesday. The limiting factor will be if current trends hold, flooding will be limited and the Flood Watch wouldn’t be necessary. Forecast rainfall totals currently range from around an inch with the ECMWF to around two inches from the GFS.

As for the rest of the islands, tonight through Wednesday, the surface high building far north of the state will bring strong trades with scattered to numerous showers, that will affect both windward and leeward sides of the islands. The flooding threat remains low over the smaller islands due to the speed these showers will be moving and the lack of forcing.

Any potential threat for heavy rain will decrease late Wednesday, but breezy and wet conditions are expected into Thursday. The strong surface high passing to the north will maintain breezy trade winds, and even though moisture will be decreasing, both the GFS and ECMWF models keep abundant moisture around the islands, pointing to a rather wet pattern.

A brief period of stable and drier trade wind conditions is expected on Friday, followed by the potential for more showery weather into the weekend and early next week as a cold front approaches the island chain. Once again models vary on timing and location so please pay attention for further updates.

Fire weather:  Moderate trades and higher humidities will maintain conditions below critical fire weather thresholds. Wet conditions are expected into Thursday, with heavy rainfall possible over recent burn areas on the Big Island.

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 cold front northwest of the Kauai coastal waters will continue to move to the east, approaching our area over the next couple of days. The front is pushing the ridge to the north to the east, which will result in a weakening of the winds, as the winds also veer to the east-southeast. The front is expected to weaken as it enters the northwest offshore waters, and then lift to the north Wednesday. Near gale-force winds are possible behind the front in the northwest offshore waters. An upper level trough over the islands, combined with moisture surging northward on the east side of  the upper trough, could produce thunderstorms over the offshore waters.

Behind the front, a new high building north of the islands will help trades strengthen to fresh to locally near gale speeds. Combined with incoming northwesterly swells, expect winds and seas to exceed Small Craft Advisory (SCA) thresholds for exposed coastal waters Wednesday into Thursday. Some of the high resolution models suggest that SCA level winds could reach some of the typical windier waters.

A small, short period NE and small, medium period NW swell will continue to slowly decline. Overlapping NW to NNW swells through the rest of this week, will keep surf heights boosted along exposed N and W facing shores. A pair of small to moderate, long period NNW (310-340 degree) swells will arrive, peaking Wednesday near or above High Surf Advisory (HSA) levels.

Surf is then expected to gradually decline Wednesday night through the end of the week. Another overlapping small, short to medium period N (350-010 degree) swell arrives Thursday into Friday. Then another moderate, long period NW (310-330 degree) swell arrives Friday, peaking near HSA thresholds over the weekend.

Surf along E facing shores will continue to decline due to the weakening of the local and upstream trade winds. As a new high pressure system builds N of the state Wednesday through Thursday, rough and choppy surf along E shores could near HSA levels. For S shores, periods of tiny background south swell energy will continue to move through keeping surf from going flat.



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

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

Caribbean Sea:  There are no active tropical cyclones

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:  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:  There are no active tropical cyclones

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 05S…is located 157 NM north of Darwin, Australia

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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: Severe Floods Threaten Global Rice Yields, Study Finds

New research finds damage to rice crops has accelerated in recent decades due to rainstorms that increasingly submerge young plants for a week or more. Adoption of flood-resistant rice varieties in vulnerable regions could help avert future losses.

Severe flooding has slashed global rice yields in recent decades, threatening food security for billions of people who depend on the grain. The losses amounted to approximately 4.3%, or 18 million tons of rice per year, between 1980 and 2015, according to research from Stanford University published November 14 in Science Advances.

Damage has accelerated since 2000 due to more frequent extreme floods across major rice-growing regions, a trend likely to be exacerbated by climate change, the researchers found.

Read More: Stanford University