Last update to this website occurred at 835pm HST Wednesday, August 12, 2020

Air Temperatures – The following high temperatures (F) were recorded across the state of Hawaii Wednesday afternoon…along with the low temperatures Wednesday morning:

86 – 76  Lihue, Kauai
89 – 75  Honolulu, Oahu –
8371  Molokai AP
9175  Kahului AP, Maui – 
87 – 77  Kona AP, Hawaii
85 – 70  Hilo, Hawaii

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

1.12  Mount Waialeale, Kauai
0.83  Schofield East, Oahu
0.16  Molokai
0.00  Lanai
0.00  Kahoolawe
0.53  Puu Kukui, Maui
1.28  Kealakekua, Big Island

The following numbers represent the strongest wind gusts (mph) Wednesday evening:

24  Port Allen, Kauai
27  Kuaokala, Oahu
25  Molokai
28  Lanai
32  Kahoolawe
33  Maalaea Bay, Maui
27  Kealakomo, Big Island

Hawaii’s MountainsHere’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii. Here’s the webcam for the (~10,023 feet high) Haleakala Crater 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.
Thunderstorms remain active in the deeper tropics
Looping version of this image

Some deep clouds near and to the north of Kauai

 Post-Tropical Cyclone Elida…dissipating in the eastern Pacific

Low clouds arriving along the windward coasts and slopes, convective clouds offshore from Kauai…high cirrus clouds just south
Showers falling locally
Looping Radar Image
Model showing precipitation through the next 8-days

Please click this link…to see current Watches, Warnings and Advisories noted above

Hawaii Weather Narrative

Glenn’s Wednesday comments:
Yet another very nice summer morning here in upper Kula, cool though, low was 50!

The trade winds are the name of the game today, as usual during the summer month of August.

As some of you know, I’m biased towards cooler weather. We’ll, today I didn’t get that, as it’s felt rather like blazing hot this afternoon. Here in my upcountry weather tower, at 5pm, with all the windows and sliding glass door wide open, the temperature inside is 85.6 degrees…way too hot for the likes of me! I have no shade from trees around, so on days when there are no clouds to give me shade…I bake in the summer months. I notice that at the same time, in Barrow, Alaska, it was 39 degrees!

After a totally sunny afternoon, a rather copious cloud cover blanketed parts of the island right around sunset, and last for a couple of hours. Although now before 9pm, skies have cleared nicely, with lots of stars shining above here in upper Kula. The air temperature has fallen into the lover 60’s, on their way down into the 50’s by sunrise Thursday.

Broad Brush Overview: An upper low will bring a slight chance of thunderstorms for areas around Kauai through tonight. Otherwise, trade wind weather will continue into early next week…with a slight reduction of the wind speeds Thursday and Friday. Clouds and passing showers will favor windward areas, although localized sea breezes may bring a few afternoon clouds, as the trades weaken.

Details: Satellite imagery shows an upper level low centered northwest of Kauai. Thunderstorms within the cold pool aloft are nearing the northwest coastal waters of Kauai, with the low expected to nudge slightly closer to the state through tonight. There will be a chance of thunderstorms extending to Kauai and surrounding waters in the process.

Weather maps show a high centered far north of the state, which is generating moderate trade winds across the islands. This high will drift east-northeast over the next few days, resulting in a slight decrease in trade wind speeds. This will allow some sheltered leeward areas to experience sea breezes and cloud build ups during the afternoon hours locally.

Looking Further Ahead: Showers will favor windward and mountain areas, mainly at night, and will be highly dependent on incoming moisture availability. The surface high is then expected to drift back toward the west as we push into the upcoming weekend into early next week…although will result in little overall change to the wind and weather pattern across the Aloha State.

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Here’s the latest Weather Map

Marine Environmental Conditions: Moderate trade winds will prevail through the weekend, supported by high pressure to the distant north. Winds may back to the NE Sunday, as the high briefly moves west. Sustained winds are expected to remain below Small Craft Advisory (SCA) speeds across all waters through the week. Instability associated with a low aloft will bring a slight chance of thunderstorms to waters around Kauai through tonight, and some of the trade wind showers will be a little heavier than normal there as well.

Surf will remain below advisory levels along all shores into next week. A relatively small northeast swell will arrive Thursday and Friday, with resulting north shore surf above seasonal norms of flatness. Smaller swells are expected to arrive from the Southern hemisphere the next couple of days, keeping surf from going flat along south facing shores. A small east swell will be possible over the weekend, generated by weakening Elida in the eastern Pacific. Increased Southern hemisphere swell energy is possible headed into next week.

World-wide Tropical Cyclone Activity

Here’s a link to the latest Pacific Disaster Center’s Weather Wall…covering the Atlantic, Caribbean Sea, and Gulf of Mexico

>>> Here’s a link to the latest Pacific Disaster Center’s
Weather Wall…covering the Pacific and Indian Oceans

>>> Atlantic Ocean: Tropical Cyclone 11L…is located 1135 miles east-southeast of the northern Leeward Islands

Here’s what the computer models are showing

According to the NHC Advisory 6…the depression is moving toward the west near 15 mph (24 km/h). A turn toward the west-northwest is forecast later tonight and this motion is forecast to continue during the next few days followed by a turn toward the northwest early next week. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Gradual strengthening is forecast during the next couple of days, and the depression is expected to become a tropical storm on Thursday.

 Here’s a satellite image of the Atlantic Ocean

>>> Caribbean: There are no active tropical cyclones

WSI satellite image of the Caribbean Sea

Latest satellite image of the Caribbean Sea and the Gulf of Mexico

>>> Gulf of Mexico:  There are no active tropical cyclones

>>> Eastern Pacific: Tropical Cyclone 09E (Elida)…is located 395 miles southwest of Punta Eugenia, Mexico – Last Advisory

Here’s the computer models

According to the NHC Advisory 17…The post-tropical cyclone is moving toward the northwest near 9 mph (15 km/h). A northwestward or north-northwestward motion at a slower forward speed is expected through Thursday. Maximum sustained winds have decreased to near 40 mph (65 km/h) with higher gusts. Additional weakening is expected during the next day or so, and the remnant low is forecast to dissipate early Friday. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center.

>>> Satellite imagery indicates that the area of low pressure located about 1300 miles southwest of the southern tip of the Baja California peninsula continues to become better defined. The associated shower and thunderstorm activity is also showing some signs of organization. Conditions are expected to remain conducive for additional development, and a tropical depression is likely to form tonight or Thursday while the system moves slowly west-northwestward.

* Formation chance through 48 hours…high…90 percent
* Formation chance through 5 days…high…90 percent

>>> A large area of disturbed weather associated with a trough of low pressure extends several hundred miles southwest of the southwestern coast of Mexico. Environmental conditions appear conducive for development, and a tropical depression is expected to form within the next few days before the system reaches cooler waters later this weekend. This system is forecast to move west-northwestward at about 15 mph away from the coast of southwestern Mexico.

* Formation chance through 48 hours…high… 70 percent
* Formation chance through 5 days…high…90 percent

>>> Another area of low pressure is expected to form in a few days over the far eastern portion of the basin to the south of the coast of Central America. Conditions are expected to be conducive for development, and a tropical depression is likely to form this weekend or early next week while it moves generally west-northwestward just offshore the coast of Mexico.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 5 days…medium…70 percent

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


>>> Central Pacific:

>>> An elongated area of low pressure is located around 950 miles southeast of Hilo, Hawaii. Environmental conditions are expected to become more conducive for development over the next several days as the system moves slowly westward. Development of this system, if any, will be slow to occur.

* Formation chance through 48 hours…low…20 percent
* Formation chance through 5 days…medium…50 percent

Here’s the link to the Central Pacific Hurricane Center (CPHC)

>>> Northwest Pacific Ocean: 

Tropical Cyclone 06W…located approximately 334 NM east-southeast of Kadena AB, Okinawa – Final Warning

Here’s a link to the Joint Typhoon Warning Center (JTWC)

>>> South Pacific Ocean: There are no active tropical cyclones

>>> North and South Indian Oceans / Arabian Sea: There are no active tropical cyclones

Seafood Study Finds Plastic In All Samples
– A study of five different seafoods has found traces of plastic in every sample tested. A study of five different seafoods has found traces of plastic in every sample tested.

Researchers bought oysters, prawns, squid, crabs and sardines from a market in Australia and analysed them using a newly developed method that identifies and measures five different plastic types simultaneously.The study – by the University of Exeter and the University of Queensland – found plastic levels of 0.04 milligrams (mg) per gram of tissue in squid, 0.07mg in prawns, 0.1mg in oysters, 0.3mg in crabs and 2.9mg in sardines.”Considering an average serving, a seafood eater could be exposed to approximately 0.7mg of plastic when ingesting an average serving of oysters or squid, and up to 30mg of plastic when eating sardines.