The latest update to this website was at 940pm Friday (HST)

 

Here are the highest temperatures Friday afternoon…and the lowest Friday morning:

80 / 64  Lihue AP, Kauai
m / m  Honolulu AP, Oahu
81 / m  Molokai AP, Molokai
85 / 60  Kahului AP, Maui
83 / 72  Kona AP, Big Island
81 / 63  Hilo AP, Big Island

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

0.01  Mount Waialeale, Kauai
0.02  Kamananui Stream, Oahu
0.00  Molokai
0.00  Lanai
0.00  Maui
0.25  Kawainui Stream, Big Island

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

13  Moloaa Dairy, Kauai
14  Kii, Oahu
14  Makapulapai, Molokai
14  Lanai 1, Lanai
13  Hana, Maui
20  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/GOES17/ABI/SECTOR/tpw/13/GOES17-TPW-13-900x540.gif 

 A cold front is located northwest of the state


https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/GEOCOLOR/GOES17-HI-GEOCOLOR-600x600.gif

Variable clouds across the state

 

https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/13/GOES17-HI-13-600x600.gif

Low clouds arriving on the trades…some high clouds north

 

https://radar.weather.gov/ridge/standard/HAWAII_loop.gif

Localized showers…not many

 

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

Kauai and Oahu (Satellite)

 

https://radar.weather.gov/ridge/standard/PHKI_loop.gif

Kauai and Oahu (Radar)

 

https://www.weather.gov/images/hfo/satellite/Oahu-Maui_VIS_loop.gif

Oahu and Maui County (Satellite)

 

https://radar.weather.gov/ridge/standard/PHMO_loop.gif

Oahu and Maui County (Radar)

 

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

 Maui, Kahoolawe, Lanai, and the Big Island (Satellite)

 

https://radar.weather.gov/ridge/standard/PHKM_loop.gif

Maui County and the Big Island (Radar)

 

https://radar.weather.gov/ridge/standard/PHWA_loop.gif

Big Island (Radar)

 

Model showing precipitation through 8-days (you can slow this animation down)

 

https://www.weather.gov/wwamap/png/hfo.png

Please open this link to see details on any current Watches, Warnings and Advisories noted above

 

https://www.weather.gov/images/hfo/graphics/pmsl.gif

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Aloha Friday comments:  I’m home here in upper Kula, Maui, Hawaii. I hope you have a good Friday wherever you happen to be spending it.

It’s clear and calm, with a chilly low temperature of 48.5 degrees according to my outside temperature sensor.

As usual with lighter winds, the clouds started collecting around mid-day, especially over and around the mountains.

Please be very careful this weekend, as extra large waves will be breaking along the north and west facing beaches!

I actually had a couple of light raindrops falling this evening, which didn’t amount to anything. My high temperature today here at my weather tower was 71.5 degrees.

 

Hawaii’s Broad Brush Weather Overview:  Southeast winds will weaken tonight into Saturday, as a cold front approaches and stalls to the northwest. Overnight land breezes and afternoon sea breezes will prevail through early next week. A cold front may move over portions of the state by mid-week next week, bringing beneficial rain and breezy winds.

Hawaii’s Weather Details:  Southeast winds will weaken as a front approaches and from the northwest. Current radar and satellite imagery show scattered showers impacting mainly windward and southeast portions of the Big Island, whereas the smaller islands are mostly blocked from the wind flow and showers. Daytime sea breezes and nighttime land breezes will set up across the state through next Tuesday, with afternoon cloud build ups across the island interiors and clearing at night.

Model guidance has been consistently showing that an upper level trough will sweep across the central Pacific, and finally help to drive the next front through at least a portion of the island chain by mid-week next week. As the southwesterly kona flow strengthens across the western half of the state late this weekend into early next week in advance of this front, this may be enough to overcome the land and sea breeze pattern for Kauai and Oahu and focus clouds and showers over leeward areas…especially if any prefrontal convergence bands materialize in the southwesterly flow.

The latest model runs look to have come into slightly better agreement on the timing of this front, bringing it to Kauai on Tuesday evening, then slowly moving through the middle of the island chain by Wednesday evening before it stalls. This frontal passage looks to bring some beneficial rain to the area, along with breezy north-northeasterly winds for the western half of the state. Convergence along this dissipating frontal boundary, an abundance of upstream moisture, and a new plume of moisture associated with a low level disturbance moving towards the eastern end of the state, will keep rain chances in the picture through the latter part of the week.

Finally, a hot spot over Halemaumau Crater on the Big Island continues to be seen on infrared satellite imagery. The University of Hawaii Vog Model shows that SO2 emissions should remain confined to portions of the Big Island and adjacent waters to the west and southwest. Then, assuming constant SO2 emissions, vog could begin to increase across some of the smaller islands by tonight, as the flow becomes more southerly.

Fire weather:  No critical fire weather conditions are expected for the next 7-days. A daytime sea breeze and overnight land breeze pattern will develop beginning tonight into early next week, as a weak southerly flow takes over. Relative humidities will stay above critical levels through the forecast period. An approaching front has the potential to move through the state from mid- to late week next week, bringing breezy northeasterly winds and providing much needed rainfall to leeward locations.

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 / Vog map animation

Hawaii’s Marine Environment:  The current northwest swell continues to run a little above guidance, but is on the decline, so surf is expected to fall below advisory levels, thus the high Surf Advisory has been cancelled. Surf is expected to rise again Saturday, reaching advisory levels late in the day, with warning level surf expected to arrive Saturday night.

A surface ridge has sunk southwards into the northern offshore waters, spreading lighter south to southeast winds to the islands. Winds are a little stronger near the Big Island versus Kauai due to the placement of the ridge. The ridge is expected to linger near Kauai and Oahu through Saturday, and push over Maui County Sunday. This will bring gentle to locally moderate southwest kona winds north of the ridge and southeast winds south of the ridge.

A cold front approaching from the northwest is expected to produce increased southwest kona winds around Kauai and Oahu early next week, and the front may reach Kauai as early as Tuesday night. This cold front will bring the chance for thunderstorms to the northern offshore waters Saturday through Tuesday.

As mentioned above, the current northwest swell is on the decline. A series of large to potentially extra large northwest swells is due this weekend and next week. A large, very intense low formed in the northwest Pacific Wednesday, and produced an elongated fetch pointed toward the islands. Forerunners of the swell will build through Saturday, and surf along north and west shores, including leeward Big Island, should far exceed High Surf Warning thresholds during the peak of the swell Saturday night into Sunday. A Small Craft Advisory (SCA) will also be needed for high seas for waters exposed to the swell. The large northwest Pacific gyre will send additional pulses of large to potentially extra large swells Monday night through Wednesday.

Surf along east and south facing shores will remain small through the week.

 

Hawaii's 10 Best Waves – Freesurf Magazine
Increasingly large surf north and west shores

 

 

World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Caribbean Sea:  There are no active tropical cyclones

Gulf of Mexico:  There are no active tropical cyclones

Northeastern Pacific:  There are no active tropical cyclones

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

North Central Pacific:  There are no active tropical cyclones

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

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:  Can Plastic-Eating Bugs Help With Our Microplastic Problem?

UBC researchers fed mealworms ground-up face masks mixed with bran and found that the bugs excreted a small fraction of the microplastics consumed.

Plastic pollution occurs in every ecosystem on the planet and lingers for decades. Could insects be part of the solution?

Previous research found that insects can ingest and absorb pure, unrefined microplastics—but only under unrealistic, food-scarce situations. In a new Biology Letters paper, UBC zoologist Dr. Michelle Tseng and alumna Shim Gicole tested mealworms in a more realistic scenario, feeding them ground-up face masks—a common plastic product—mixed with bran, a tastier option.

Read more at University of British Columbia

Image: Mealworms feast on bran and microplastics in the lab.