The latest update to this website was at 607am Monday morning (HST)

 

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

86 / 73  Lihue AP, Kauai
88 / 76  Honolulu AP, Oahu
87 / 75  Molokai AP, Molokai
90 / 66  Kahului AP, Maui – 93 was the record maximum
86 / 73  Kona AP, Big Island
84 / 69  Hilo AP, Big Island

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

0.84  Mount Waialeale, Kauai
0.22  Luluku, Oahu
0.14  Puu Alii, Molokai
0.00  Lanai
0.17  West Wailuaiki, Maui
0.44  Kawainui Stream, Big Island

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

15  Port Allen, Kauai
21  Oahu Forest NWR, Oahu
25  Makapulapai, Molokai
13  Lanai 1, Lanai
13  Kahului AP, Maui
18  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 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 front far north
(click for larger version)


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Variable clouds across the state

 

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

Low clouds being carried our way on the trade wind flow

 

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

Localized showers

 

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

 

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~~~ Hawaii Weather Narrative ~~~

 

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

516am, it’s mostly clear early this morning…the low temperature here at my Kula weather tower was 54 degrees.

 

Hawaii’s Broad Brush Weather Overview:  Light to moderate trade winds will continue with passing overnight to early morning showers through the end of the week. A slight increase in showers may develop from Tuesday night to Wednesday morning, especially over the eastern islands. Trade wind speeds will decrease in strength with expanding afternoon sea breezes over each island Thursday into the weekend.

Hawaii’s Weather Details:  Local Hawaiian radar imagery shows a few showers drifting into the windward slopes of each island on the easterly trade winds this morning. The upper air balloon soundings keep subsidence temperature inversion heights in the 4,000 to 6,000 foot range, which indicates a fairly stable weather pattern.

For most of the week we will see passing showers mainly over windward and mountain areas of each island, favoring the typical overnight to early morning hours. One wrinkle in this rainfall forecast will occur Tuesday night to Wednesday, as a weak disturbance moves from east to west down the island chain. Expect shower coverage to increase during this time period, especially over the eastern half of the state.

Fairly stable trade winds will return by Wednesday afternoon. Large scale trade wind speeds will weaken slightly from Thursday onward, allowing local scale sea breezes to expand in coverage over each island lasting into the weekend.

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:  High pressure northeast of the islands will keep moderate to locally fresh trades in place through Thursday. Wind speeds may flirt with Small Craft Advisory (SCA) criteria in the windier channels at times, but will likely not be consistent enough to warrant the issuance of a SCA. The trades will ease into the light to locally moderate range Friday through the weekend, as the ridge north of the state weakens.

A small north swell will continue to fade out. A new small northwest swell is expected to arrive tonight, peak late Tuesday and Tuesday night, then decline as it shifts more northerly Wednesday and Thursday. Several additional small north swells should maintain small surf along north facing shores Friday through the weekend.

A small southwest swell will continue to provide some small but inconsistent surf along south facing shores. A new slightly larger south-southwest swell is expected to give a nice boost to south shore surf as it builds tonight, peaks Tuesday through Wednesday, then gradually declines through the rest of the work week.

A small to moderate sized south-southwest swell will gradually fill in late Saturday and Saturday night, then peak next Sunday and Monday. This swell will give a sizable late season boost to south shore surf, potentially reaching advisory levels.

East shore surf will remain small through most of this week, although select spots with more northerly exposure could see some of the north swells throughout the week.

 

                           The Ultimate Guide to Hawaii's Big Island with Kids - Trips With Tykes

 

 

World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  

Post-Tropical Cyclone 10L (Isaac)…located about 480 miles north-northwest of the Azores – Last Advisory

ISAAC BECOMES A POST-TROPICAL CYCLONE…THIS IS THE LAST ADVISORY

According to the NHC Advisory number 19

The post-tropical cyclone is moving toward the east-northeast near 17 mph and a turn to the northeast is expected with a similar forward motion for the next several days. Maximum sustained winds have decreased to near 60 mph with higher gusts. Gradual weakening is forecast over the next several days. Tropical-storm-force winds extend outward up to 185 miles from the center.

cone graphic

Tropical Cyclone 11L (Joyce)…located about 940 miles east-northeast of the Northern Leeward Islands

JOYCE BARELY REMAINS A TROPICAL CYCLONE

According to the NHC Advisory number 13

The depression is moving toward the north near 2 mph and a general northerly motion is expected for the next couple of days. Maximum sustained winds are near 35 mph with higher gusts. Some weakening is forecast during the next 48 hours, and Joyce is expected to become a remnant low soon.

Tropical Cyclone 12L (Kirk)…located about 740 miles west-southwest of the Cabo Verde Islands

KIRK STRENGTHENING OVER THE TROPICAL ATLANTIC

According to the NHC Advisory number 4

Kirk is moving toward the west near 12 mph, and a general westward to west-northwestward motion is expected to continue through Tuesday. A gradual turn to the northwest is forecast by Wednesday. Satellite wind data indicate that the maximum sustained winds have increased to near 50 mph with higher gusts. Kirk is likely to become a hurricane by tomorrow and could become a major hurricane by midweek. Tropical-storm-force winds extend outward up to 115 miles from the center.

cone graphic

>>> Eastern Tropical Atlantic:

Showers and thunderstorms have increased in association with a tropical wave located a few hundred miles south of the Cabo Verde Islands. Upper-level winds are forecast to become more conducive for gradual development, and a tropical depression is likely to form in a few days while it moves slowly westward over the eastern tropical Atlantic.

* Formation chance through 48 hours…low…30 percent
* Formation chance through 7 days…high…80 percent

Caribbean Sea:  There are no active tropical cyclone

>>> Western Caribbean and Gulf of Mexico:

A large and disorganized area of low pressure located over the western and southwestern Caribbean Sea is producing some shower and thunderstorm activity. Environmental conditions could become conducive for gradual development, and a tropical depression could form in a few days while the system is over the southern Gulf of Mexico or northwestern Caribbean Sea. While interests in the northwestern Caribbean Sea and along the U.S. Gulf Coast should continue to monitor the progress of this system, the timetable for potential development has shifted later toward late week or this weekend.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…medium…40 percent

Gulf of Mexico: There are no active tropical cyclones

Northeastern Pacific:  There are no active tropical cyclones

>>> Offshore of Southwestern Mexico:

An area of low pressure is expected to develop off the coast of southwestern Mexico during the next day or so. After that time, environmental conditions are expected to be generally conducive for additional development, and a tropical depression is likely to form by the middle or latter portions of this week. The disturbance is forecast to meander near or just offshore the coast for much of the week, and then begin moving slowly west-northwestward, parallel to the coast of Mexico by this weekend. Regardless of development, this system is expected to contribute to additional heavy rainfall across portions of the southwestern coast of Mexico already adversely affected by substantial rainfall last week, and interests there should monitor the progress of this disturbance.

* Formation chance through 48 hours…low…20 percent
* Formation chance through 7 days…high…70 percent

>>> South of the Gulf of Tehuantepec:

Another area of low pressure has developed in the Gulf of Tehuantepec and is producing disorganized showers and thunderstorms primarily offshore of southern Mexico. The system is forecast to move erratically through mid-week before drifting northward towards the southern Mexican coast, and some additional development of the system is possible while it remains offshore. Regardless of formation, heavy rain is possible along most of the coast of southern Mexico and northern Central America throughout this week.

* Formation chance through 48 hours…low…20 percent
* Formation chance through 7 days…low…20 percent

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

Tropical Cyclone 19W (Jebi)…is located approximately 371 NM south of Yokosuka, Japan

https://www.metoc.navy.mil/jtwc/products/wp1924.gif

Tropical Cyclone 20W (Krathon)…is located approximately 539 NM southwest of Kadena AB

https://www.metoc.navy.mil/jtwc/products/wp2024.gif

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:  Return of the Elephants Seals: From a Few to Thousands

A new international study has revealed the genetic impact of hunting in northern elephant seals. Published (27.09.2024) in ‘Nature Ecology and Evolution’, the research shows that this species narrowly escaped extinction by hunting, resulting in lasting genetic effects in the present population. Fifteen German, British and US researchers from seven universities and four research institutions collaborated for this study led by Bielefeld University.

At the start of the 20th century, northern elephant seals were on the brink of being wiped out by hunting. ‘Genetic analyses suggest that the population was likely reduced to fewer than 25 animals at that time,’ explains Professor Dr Joseph Hoffman, lead author of the study and head of the Evolutionary Population Genetics group at Bielefeld University.

Such drastic population declines can squeeze out a species’ genetic diversity, increasing the risk of inbreeding and threatening its survival. The population of northern elephant seals has since recovered to around 225,000 individuals. The study published in the journal ‘Nature Ecology and Evolution’ examines how this near-extinction event impacted the species’ genetic diversity and health.

Read more at: Bielefeld University