The latest update to this website was at 928pm Sunday evening (HST)

 

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

85 / 77  Lihue AP, Kauai
88 / 74  Honolulu AP, Oahu
86 / 74  Molokai AP, Molokai
88 / 67  Kahului AP, Maui
86 / 73  Kona AP, Big Island
85 / 68  Hilo AP, Big Island

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

0.28  Mount Waialeale, Kauai
0.15  Maunawili, Oahu
0.00  Molokai
0.00  Lanai
0.05  West Wailuaiki, Maui
0.29  Kawainui Stream, Big Island

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

18  Nawiliwili, Kauai
22  Oahu Forest NWR, Oahu
24  Molokai 1, Molokai
24  Lanai 1, Lanai
15  Kahului AP, Maui
29  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

https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/tpw/13/GOES17-TPW-13-900x540.gif 

 Thunderstorms far south…cold fronts far north
(click for larger version)


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

High Cirrus clouds arriving from the west

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

Localized showers…very few

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 Sunday comments:  I’m home here in upper Kula, Maui, I hope you have a great Sunday wherever you happen to be spending it.

530am, mostly clear early this morning…the low temperature here at my Kula weather tower was a chilly 50.5 degrees.

1030am, it’s a bit breezy here in upper Kula, and very sunny, a great day to have washed my clothes and have them hanging out on the line to dry.

935pm, it’s obviously dark outside, and each day I keep trying to see the comet that’s apparently visible, with binoculars, just after sunset. My high temperature today was 79.5 degrees, and now at the time of this writing, it’s 61.3 degrees here at my Kula weather tower.

 

Hawaii’s Broad Brush Weather Overview:  Look for moderate trade winds to continue through Monday, then strengthen into the moderate to locally breezy range Monday night onward, as the subtropical ridge north of the island strengthens.

Shower activity will increase tonight into Monday, as a weak trough of low pressure moves westward across the state. Another brief increase in showers will develop Thursday into Saturday, as another weak disturbance moves down the island chain.

Hawaii’s Weather Details:  Satellite pictures show some enhanced low level clouds east of Hilo, riding in on the trade winds. Expect an increase in shower activity over the eastern islands later tonight, then into the western islands by Monday morning. The greatest shower activity will develop over windward and mountain slopes in the overnight to early morning hours. A few bands of high level cirrus clouds are also passing over the state.

The latest computer model guidance continues to show a weak subtropical ridge north of the Hawaiian Islands, producing moderately strong trade winds across the island chain through early Monday. A hybrid trade wind and sea breeze pattern will continue for the next two days, sea breeze areas will develop along the western terrain sheltered slopes of each island.

By Monday night the ridge north of the state strengthens slightly, producing moderate to locally breezy trade winds across the Hawaii area through Thursday. Clouds and showers will tend to favor windward and mountain areas through the week, mainly over the overnight to early morning hours.

Another trough of low pressure in the easterly trade winds, and a weak upper level low may bring another brief increase in shower activity from Thursday morning near the Big Island, then spreading slowly to the western islands from Friday into Saturday.

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:  A cold front north of the islands will produce a weaker upstream pressure gradient, and this will result in continued gentle to moderate trade winds through early Monday. As the front passes northeast of the state the next couple of days, high pressure will reestablish itself over the East Pacific. Trades will respond by strengthening back to more moderate to locally strong levels early Tuesday.

A Small Craft Advisory may be required for the notoriously windy eastern island bays and channels by early Tuesday. Trades will drop off a touch late in the week, as the next cold front pushes the high northeast of the state closer to the islands, and weakens the pressure gradient.

A small reinforcing north (350 degree) swell will hold chest to head high surf in across north shores. The arrival of a larger north (350 degree) swell early Monday morning will produce advisory level surf along north-facing shores. This swell and resulting surf will peak Monday evening, and then slowly decline through the middle of the week.

The most recent small south (180 degree) swell will begin to fade, as will near waist high south shore surf. Surf along west-facing shores will remain elevated and increase through Monday, due to the influence of the north swell wrap. East-facing shore wind waves will remain relatively small under this recent weaker trade regime. East wind swell will pick back up through Tuesday in response to strengthening trades.

 

                           Kauai Travel Blog: How To Plan A Trip Of A Lifetime To Kauai

 

 

World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

 >>> Central Tropical Atlantic:

Invest 94L

A well-defined area of low pressure located several hundred miles west of the Cabo Verde Islands is struggling to produce showers and thunderstorms. This system is currently embedded in an unfavorable environment and development is not anticipated over the next couple of days. However, this system is forecast to move generally westward to west-southwestward, and environmental conditions could become more favorable for gradual development by the middle to latter part of this week. A tropical depression could form as the system begins moving west-northwestward and approaches or moves near the Leeward Islands by the end of this week.

* Formation chance through 48 hours…low…10 percent
* Formation chance through 7 days…medium…40 percent

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:  Researchers Find Clues to the Mysterious Heating of the Sun’s Atmosphere

Experimental findings about plasma wave reflection could answer questions about high temperatures.

There is a profound mystery in our sun. While the sun’s surface temperature measures around 10,000 degrees Fahrenheit, its outer atmosphere, known as the solar corona, measures more like 2 million degrees Fahrenheit, about 200 times hotter.

This increase in temperature away from the sun is perplexing and has been an unsolved mystery since 1939, when the high temperature of the corona was first identified. In the ensuing decades, scientists have tried to determine the mechanism that could cause this unexpected heating, but so far, they have not succeeded.

Now, a team led by Sayak Bose(Link opens in new window), a researcher at the U.S. Department of Energy(Link is external)’s (DOE) Princeton Plasma Physics Laboratory (PPPL), has made a significant advancement in understanding the underlying heating mechanism.

Their recent findings show that reflected plasma(Link is external) waves could drive the heating of coronal holes, which are low-density regions of the solar corona with open magnetic field lines extending into interplanetary space. These findings represent major progress toward solving one of the most mysterious quandaries about our closest star.

“Scientists knew that coronal holes have high temperatures, but the underlying mechanism responsible for the heating is not well understood,” said Bose, the lead author of the paper reporting the results in The Astrophysical Journal. “Our findings reveal that plasma wave reflection can do the job. This is the first laboratory experiment demonstrating that Alfvén waves reflect under conditions relevant to coronal holes.”

Read more at DOE/Princeton Plasma Physics Laboratory