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

87 – 78  Lihue, Kauai
90 – 77  Honolulu, Oahu
92 – 73  Molokai AP
92 – 69  Kahului AP, Maui
82 – 71  Kailua Kona
85 – 70 Hilo AP, Hawaii

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

0.89  Mount Waialeale, Kauai
0.19   Poamoho RG 1, Oahu
0.00  Molokai
0.00  Lanai
 0.00  Kahoolawe
0.02  Puu Kukui, Maui
0.36  Kawainui Stream, Big Island

The following numbers represent the strongest wind gusts (mph) Monday morning:

21  Port Allen, Kauai
28  Oahu Forest NWR, Oahu
28  Molokai
23  Lanai
33  Kahoolawe
22  Kahului AP, Maui
22  South Point, Big Island

Hawaii’s Mountains – Here’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (nearly 13,800 feet high) on the Big Island of Hawaii. Here’s the webcam for the 10,000+ 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.


Aloha Paragraphs


http://www.ssd.noaa.gov/goes/west/tpac/avn-animated.gif
 Tropical Cyclone 10E (Hector) is moving further away to the west of the islands (click images to enlarge)

 

http://www.ssd.noaa.gov/goes/west/cpac/ir4.jpg
High clouds moving over the state from the northwest…more high clouds southeast

http://www.ssd.noaa.gov/goes/west/hi/ir4.jpg
Clear to partly cloudy…some cloudy areas

 

http://www.prh.noaa.gov/hnl/satellite/State_VIS_loop.gif
Drier air is moving over the state

 

https://radar.weather.gov/Conus/RadarImg/hawaii.gif
Showers locally and offshore
 Looping image

 

Small Craft Advisory…windiest coasts and channel waters around Maui County and the Big Island

 

~~~ Hawaii Weather Narrative ~~~

 

Broad Brush Overview: Moderate to strong trade winds, associated with a large and strong high pressure system located far north-northeast of the islands will continue through Monday…then begin to weaken Tuesday through the second half of the new week. Drier air and more stable conditions are expected through the first half of the week, which should keep the rainfall accumulations on the light side. Lighter winds along with increasing moisture is expected by the end of the week, which could bring increasing shower coverage, along with higher humidities over the islands then.

Details: The models suggest that mostly stable conditions, with moderate to strong trades will hold firm, as high pressure remains anchored to the north. A band of moisture, however, riding in on the trades will support generally light windward showers. Drier air, in the wake of this band of moisture, is expected to arrive through Monday. Meanwhile, there’s a weak trough of low pressure overhead, which will shift west of the islands tonight into Monday…with light to moderate southeast winds. If this occurs, vog from the Big Island could creep northward toward the smaller islands through the day Monday.

Looking Ahead: As we push into the Tuesday through Saturday time period, the models remain in agreement supporting lighter trades due to the ridge of high pressure located north of the state, weakening in response to a cold front. This combined with a large area of tropical moisture, projected to approach and begin to arrive across the islands from the east later in the week, may lead to better shower coverage…especially for Maui County and the Big Island. The good news is that hurricane Hector has given us a pass, and I don’t see any other tropical cyclones moving into our area for the time being.

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 / Here’s the latest Vog Forecast Animation / Here’s the Vog Information website

Marine Environmental Conditions: High pressure north of the state is expected to remain in place and strengthen slightly. The Small Craft Advisory (SCA) has been extended for the typically windier waters near Maui County and the Big Island through Monday afternoon. Winds are then expected to decrease Monday night as high pressure weakens through the middle of the week.

The current south swell is expected to gradually decline over the next few days. Surf along east facing shores will be rough and choppy through Monday…due to breezy trade winds.



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World-wide Tropical Cyclone Activity

 

Here’s the Monday Pacific Disaster Center (PDC) Weather Wall Presentation covering a tropical disturbance in the Atlantic Ocean

Here’s the latest Pacific Disaster Center (PDC) Weather Wall Presentation covering the Pacific and Indian Oceans, including retiring Tropical Cyclone 18W (Yagi), Tropical Cyclone 19W (Leepi), Tropical Cyclone 20W (Bebinca)..and Tropical Cyclone 10E (Hector)


>>> Atlantic Ocean: No active tropical cyclones

1.) A non-tropical broad area of low pressure is located a little more than 600 miles south-southeast of Cape Race, Newfoundland. Conditions could become somewhat favorable for subtropical or tropical development during the next 2 or 3 days, and if formation occurs, the system should move toward the northeast over the north Atlantic.

* Formation chance through 48 hours…low…10 percent
* Formation chance through 5 days…low…20 percent

>>> Caribbean Sea: No active tropical cyclones

>>> Gulf of Mexico: No active tropical cyclones

Tropical cyclone formation is not expected during the next 5 days.

Here’s a satellite image of the Caribbean Sea…and the Gulf of Mexico

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

>>> Eastern Pacific:

http://www.ssd.noaa.gov/goes/west/epac/ir4-l.jpg

1.) Disorganized showers and thunderstorms continue in association with a tropical wave located about 850 miles south-southwest of the southern tip of the Baja California peninsula. Environmental conditions are forecast to become a little more conducive for development by the middle part of the week, and a tropical depression could form late this week while the disturbance moves westward at 10 to 15 mph.

* Formation chance through 48 hours…low…10 percent
* Formation chance through 5 days…medium…40 percent

2.) A broad low pressure area located about 1200 miles west-southwest of the southern tip of the Baja California peninsula is producing disorganized showers and thunderstorms. Some development of this system is possible during the next day or two before upper-level winds and water temperatures become less conducive.

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

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

>>> Central Pacific:

http://www.ssd.noaa.gov/goes/west/cpac/ir4.jpg

Tropical Cyclone 10E (Hector) remains active…as a Tropical Storm

> Here’s a looping satellite image of the central Pacific

> Here’s what the models are showing for this weakening TS

> Here’s a near real time wind profile for 10E

According to the CPHC…Hector is moving toward the west-northwest near 17 mph, and this general motion is expected to continue during the next couple of days. Note that on the present track, Hector will likely cross the International Dateline into the Northwestern Pacific today. Maximum sustained winds are near 65 mph with higher gusts. Some additional weakening is expected during the next two days.

Tropical-storm-force winds extend outward up to 105 miles from the center.

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

>>> Northwest Pacific Ocean:


Tropical Cyclone 18W (Yagi)


Tropical Cyclone 19W (Leepi)


Tropical Cyclone 20W (Bebinca)


>>> South Pacific Ocean: No active tropical cyclones

>>> North and South Indian Oceans / Arabian Sea: No active tropical cyclones


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

 

Interesting: Why the Perseid Meteor Shower Blazes Through the Sky Every Summer – Every 133 years or so, the massive Swift-Tuttle comet careens through our solar system at 150 times the speed of sound, spreading a dirty trail of ice, dust and sundry space schmutz behind it. This weekend, Earth will do its part to clean up that interstellar mess during an annual event we call the Perseid meteor shower.

The Perseids occur every year from mid-July to late August, when Earth passes through the wide band of debris left behind by Comet Swift-Tuttle’s various visits to our part of the galaxy. Each time the comet swings by (most recently in 1992), it drops trillions of tiny pieces of itself into our inner solar system. Most of these little specks of metal and stone are as small as grains of sand, but that doesn’t prevent them from flashing across the night sky when they collide with Earth’s atmosphere at about 133,200 mph.

The result is one of the most dazzling meteor showers of the year — and the best time to watch it is this weekend.

On Sunday night (Aug. 12) and into early Monday morning (Aug. 13), Earth will push through the densest band of the Swift-Tuttle debris cloud that our planet has access to. And if you find yourself looking up into the sky in a clear, dark place, you could see from 50 to 100 meteors zipping through the sky every hour, according to NASA.

The good news for stargazers this year is that the moon will snuff its light for the start of a new lunar phase on Saturday (Aug. 12), significantly darkening the sky. This will allow fainter meteoroids (flying space rocks that are still airborne) to make visible marks overhead.

The bad news, if you can call it that, is that some years the Perseids are more spectacular than others — and 2018 happens to be an off year.

In certain years (such as 2016), the Perseid shooting star count can rise up to about 200 meteors every hour. For these extra sparkly Perseid years, you can thank one of our obtrusive cosmic neighbors: Jupiter. While the giant planet never passes directly through Comet Swift-Tuttle’s dusty remains like the Earth does, Jupiter is so massive that even coming within a few hundred million miles of the dust cloud is close enough to alter the cloud’s path.

Such an alteration occurs every 11 years or so, when Jupiter makes its closest approach to the Swift-Tuttle debris cloud, at a distance of about 160 million miles. That may sound far, but at this separation, Jupiter’s extreme gravity can actually pull the debris cloud across the cosmos, dragging it a full 930,000 miles closer to Earth, Space.com previously reported.

On those special years when Earth, Jupiter and the Swift-Tuttle cloud are all relatively near one another, Earth is treated to an extra-special Perseid shower. The passing meteoroids are brighter and closer, and there are a lot more of them streaking into the atmosphere. (Recent years when this happened include 1921, 1945, 1968, 1980 and 2004.)

This year, sadly, is not one of those years. But the sky show still warrants excitement. Bill Cooke, a scientist at NASA’s Meteoroid Environments Office in Alabama, framed the phenomenon well in a 2016 interview with NASA.

“The meteors you’ll see this year are from comet flybys that occurred hundreds if not thousands of years ago,” Cooke said. “And they’ve traveled billions of miles before their kamikaze run into Earth’s atmosphere.”

Scientifically speaking, that’s pretty cool.