The latest update to this website was at 450pm Wednesday (HST)

 

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

0.50  Hanamaulu, Kauai
0.05  Punaluu Pump, Oahu
0.01  Honolimaloo, Molokai
0.00  Lanai
0.15  West Wailuiki, Maui
0.88  Kaiholena, Big Island

The following numbers represent the strongest wind gusts (mph) as of Wednesday afternoon:

27  Port Allen, Kauai
27  Oahu Forest NWR, Oahu
28  Molokai AP, Molokai
24  Lanai 1, Lanai
43  Na Kula, Maui
29  Hokuloa, 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 south and northeast…cold fronts far northwest 

 

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

High and middle level clouds in the vicinity of the state…along with developing cumulus clouds 

 

 

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

It’s mostly clear here in Maui County early this morning with a few clouds. The low temperature at my place was 52.5 degrees…with a relative humidity of 80%.

1116am, it’s become partly cloudy, with a mix of low and higher level clouds here in Maui County.

1146am, I know that at least some of you keep looking up at the sky and wondering where’s all this rain that suppose to be coming our way. Well, I’m kinda doing the same thing, although I’m trying to be patient, as it’s still early.  I’ll keep my eyes out for dark clouds and even some thunder at times through Friday…you betcha.

448pm, partly cloudy although with no rain that I can see from here in Kula…now we’re waiting until early Thursday morning for some precipitation activity.

Weather Wit of the day: Air Pollution Emergency – When you go outside and get a bite of fresh air

>>> Highest Temperature Wednesday, October 15, 2025 – 96 at Rio Grande Village, Texas
>>> Lowest Temperature Wednesday, October 15, 2025 – 17 near Augusta, Montana

 

Hawaii’s Broad Brush Weather Overview: A wet trade wind pattern begins developing early Thursday morning and matures this weekend into next week. Thunderstorms will be possible at times, particularly at night, during this stretch.

Hawaii’s Weather Details:  Satellite imagery shows two upper lows approaching the islands from the north. Divergent winds are shown along the southern and eastern flank of this low pressure system, with thunderstorms forming around the cold core center of the low. In the lower levels, using the infrared satellite channel, we see long bands of unstable clouds likely associated with remnants of an old East Pacific cold front, riding into the islands on the trade winds. These cloud bands produce enhanced showers caused by the instability surrounding the upper low, and the convergent lifting of the trade winds forcing these unstable clouds up the windward mountain slopes.

For today, look for easterly trade winds into the moderate to locally breezy range, with increasing clouds and showers as the upper low moves in from the north, and low level cloud bands riding in from the east begin to converge over the island chain. This mornings subsidence temperature inversion heights, as measured by upper air balloon soundings at Lihue and Hilo, have risen to the 7,000 to 8,000 foot level. This means scattered to numerous showers are likely near island mountains.

An extended period of wet weather will continue to affect all islands this week, with periods of numerous showers falling across the state into Saturday. Some of these showers will be locally heavy at times, and thunderstorms are likely over the western islands of Niihau, Kauai and Oahu. The Big Island may also see a few thunderstorms on Thursday.

Storm total rainfall estimates for this entire two to three day event may exceed 2.00 inches in terrain favored windward locations. Confidence in which islands will see the heaviest showers is currently not high enough to trigger a flood watch at this time. However, a flood watch may be needed once we see how this pattern evolves, in order to narrow down potential flooding threats to specific islands in the chain.

Showers will linger over the islands on Saturday, with a brief decrease in shower activity on Sunday, as the upper low drifts westward moving away from the island chain. However, another weak upper low moves right in from the north on Monday, setting up in an almost identical location near Kauai and Oahu. Cold air surrounding this low and divergence aloft will bring yet another round of enhanced shower activity to the islands next week, from Monday into next Wednesday. Stay Tuned.

Fire weather:  Wind speeds and afternoon minimum humidity levels will likely remain below critical fire weather thresholds this week. Unstable conditions will produce increasing wet weather trends across the state into Saturday. Locally heavy rain and thunderstorms are possible during this time period. Temperature inversion heights near Maui and the Big Island will range from the 7,000 to 8,000 feet elevation range 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 fresh trade winds are expected as a weak surface trough over the western end of the state advances west and dissipates. A Small Craft Advisory (SCA) for winds around Maui County and the Big Island remains in effect until 6am Thursday. An approaching upper low brings a chance for thunderstorms to area waters from Thursday into the weekend.

A moderate to long period northwest (310-320) swell that peaked Tuesday will slowly decline through the rest of the week into the weekend.

Small, medium period south swell continues through the week, with minor longer period pulses arriving today and Saturday. East shores remain small through the near term, but will see increasing short period action as trades strengthen.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  

Remnants of Tropical Cyclone Lorenzo is located about 1300 miles west-northwest of the Cabo Verde Islands – Last Advisory

LORENZO DISSIPATES

According to the NHC advisory number 11

The remnants are moving toward the northeast near 18 mph and this motion is expected to continue with a faster forward speed for the next day or so. Maximum sustained winds are near 35 mph with higher gusts. The estimated minimum central pressure is 1006 mb (29.71 inches).

cone graphic

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: 

South of Southern Mexico:

Invest 91E

>>> A broad area of low pressure is producing some disorganized showers and thunderstorms offshore of southern Mexico and portions of Central America. Environmental conditions appear conducive for gradual development of this disturbance, and a tropical depression could form late this week or over the weekend. The system is expected to move little during the next couple of days, but a slow northwestward motion near the coast of southern and southwestern Mexico is expected by the weekend.

* Formation chance through 48 hours…medium…40 percent
* Formation chance through 7 days…medium…60 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:  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: 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:  A New Approach to Cutting Marine Plastic Pollution

Every year, many millions of tons of plastic end up in the ocean. It’s a serious and rapidly increasing environmental problem.

NTNU researchers are now looking for a solution that can address this nightmare at its root.

“The solutions we have today mostly concern cleanup after we’re done with the plastic. We sort, we recycle and we pick up plastic on the shore. But what about approaches that completely change the way we produce and consume plastic?” said Natalya Amirova. She is a PhD research fellow at NTNU’s Department of Psychology and part of an interdisciplinary research team at the university.

Read more at: Norwegian University of Science and Technology