The latest update to this website was at 727pm Tuesday (HST)

 

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

0.96  N Wailua Ditch, Kauai
0.38  Tunnel RG, Oahu
0.20  Honolimaloo, Molokai
0.00  Lanai
0.39  West Wailuaiki, Maui
0.21  Pahoa, Big Island

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

21  Port Allen, Kauai
24  Oahu Forest NWR, Oahu
20  Molokai AP, Molokai
21  Lanai 1, Lanai 
30  Na Kula, Maui
22  South Point, 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 northwest…thunderstorms south

 

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

 Variable low clouds over the islands…higher clouds approaching 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 Corte Madera (Marin County, CA) at my friend Linda’s place

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

It was sunny for a while around mid-day, and then turned partly cloudy later on…although remained dry.

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

>>> Highest Temperature Tuesday, November 18, 2025 – 93 at La Puerta, Texas
>>> Lowest Temperature Tuesday, November 18, 2025 – 5 near Lutsen, MN

 

Hawaii’s Broad Brush Weather Overview: Deep tropical moisture will continue to stream over the eastern end of the state through Wednesday. This moisture will interact with a surface trough to bring periods of heavy showers through Wednesday, especially for windward portions of Maui and the Big Island.

The chance of heavy rainfall diminishes late Wednesday into Thursday, but breezy and 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: Satellite imagery continues to show thick mid to upper level clouds streaming in from the southwest over the Big Island, with precipitable water levels near 2.00 inches. Meanwhile, the latest surface analysis depicts a surface trough southeast of the Big Island moving towards the west. Guidance also continues to show an upper level trough northwest of the islands deepening tonight, as it moves east which will keep unstable conditions across the area.

Expect these troughs to continue to interact with the deep tropical moisture moving across the Big Island to bring periods of heavy showers to the area. The latest guidance continues to show the potential for heavy rain across the Big Island will continue through Wednesday, but total accumulations are now on the lower side, as guidance has started to back off.

Nonetheless, some locally heavy rain remains possible and could produce nuisance flooding in the typical areas, with 1 to 2 inches of rain expected across windward areas of the Big Island. Any potential threat for heavy rain will decrease late Wednesday.

The thick clouds over the Big Island summits produced some light snow accumulations last night, with precipitation quickly transitioning to rain today. Expect precipitation to become a mix of rain and snow overnight as snow levels fall to around 12,000 feet. Guidance doesn’t show much change in summit conditions on Wednesday, with an additional 1 to 2 inches of snow possible.

As for the rest of the state, water vapor imagery shows a small dry air slot filling in, which explains the lack of clouds over the smaller islands. Radar imagery showa mainly scattered windward and mountain showers moving across the smaller islands. Moderate trades will continue across these areas as high pressure builds far north.

Breezy and wet conditions are expected into Thursday. The strong surface high passing to the north will maintain breezy trade winds, and even though precipitable water values 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:  Critical fire weather conditions not expected through the forecast period. Gusty trades continue through Wednesday, with moderate trades expected thereafter. Incoming moisture will keep relative humidities above critical thresholds. Periods of heavy rain remain possible over the Big Island through Wednesday.

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 201 NM north-northeast of Darwin, Australia

https://www.metoc.navy.mil/jtwc/products/sh0526.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: 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