The latest update to this website was at 6pm Monday evening (HST)

 

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

85 / 76  Lihue AP, Kauai
88 / 78  Honolulu AP, Oahu
87 / 75  Molokai AP, Molokai
91 / 67  Kahului AP, Maui – 94 was the record maximum Monday
86 / 74  Kona AP, Big Island
86 / 67  Hilo AP, Big Island

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

0.53  Mount Waialeale, Kauai
0.37  Poamoho RG 1, Oahu
0.11  Puu Alii, Molokai
0.01  Lanai 1, Lanai
0.08  West Wailuaiki, Maui
0.30  Kawainui Stream, Big Island

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

17  Port Allen, Kauai
20  Oahu Forest NWR, Oahu
27  Molokai AP, Molokai
28  Lanai 1, Lanai
35  Kahului AP, Maui
23  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 northwest
(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

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

 

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

~~~ 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.

1116am, as is often the case, it’s turned cloudy here in upper Kula, although further down the mountain towards the coasts, it’s mostly sunny.

530pm, the sun is setting earlier and earlier day evening, I love this change! It was a warm day although far from being hot. My high temperature was a mild 77.5 degrees.

 

Hawaii’s Broad Brush Weather Overview:  Moderate trade winds will continue with passing windward and mountain showers through mid-week. A slight increase in showers will be possible late Tuesday into Wednesday, especially over the eastern islands. Trades will decrease Thursday through the weekend, supporting daytime sea breezes and nighttime land breezes. Moderate trades will return early next week.

Hawaii’s Weather Details:  Weather maps reveal an area of high pressure centered over 1600 miles north-northeast, which is producing moderate easterly trade winds over the islands. Local satellite and radar imagery shows a few showers embedded in the trades drifting into windward slopes and coasts of the islands. Atmospheric soundings from Lihue and Hilo confirmed temperature inversion heights between 4,000 and 7,500 feet and a stable atmosphere over the state.

For at least the first half 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. A disturbance moving into the islands from the east late Tuesday into Wednesday could increase shower coverage, especially over the eastern half of the state. Otherwise, a fairly typical moderate trade wind pattern will persist through at least Wednesday.

A low pressure system and a pair of fronts moving across the North Pacific during the second half of the week will weaken trade wind speeds slightly Thursday into the weekend. This should allow local scale sea breezes (and increased cloudiness with a few showers) over the islands during the day, and land breezes (with clearing skies) at night. High pressure will return far northeast of the islands early next week, allowing moderate trades to return.

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: 

Tropical Cyclone 11L (Joyce)…located about 970 miles east-northeast of the Northern Leeward Islands

JOYCE HANGING ON AS A TROPICAL CYCLONE

According to the NHC Advisory number 14

The depression is moving toward the north near 2 mph and a slow northward motion is expected to continue for the next day or two. Maximum sustained winds are near 35 mph with higher gusts. Some weakening is forecast during the next 48 hours, and Joyce should become a remnant low soon.

Tropical Cyclone 12L (Kirk)…located about 800 miles west of the Cabo Verde Islands

KIRK FORECAST TO BECOME A VERY LARGE MAJOR HURRICANE OVER THE CENTRAL TROPICAL ATLANTIC OCEAN IN A FEW DAYS

According to the NHC Advisory number 5

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 and that motion should continue through Thursday. Maximum sustained winds have increased to near 60 mph with higher gusts. Kirk is forecast to become a hurricane on Tuesday and could become a major hurricane on Wednesday. Tropical-storm-force winds extend outward up to 115 miles from the center.

cone graphic

>>> Eastern Tropical Atlantic:

Satellite wind data indicate that a broad area of low pressure has formed in association with a tropical wave located a few hundred miles south of the Cabo Verde Islands. Showers and thunderstorms continue to gradually increase in association with the system, and environmental conditions appear conducive for further development. A tropical depression is very likely to form during the next few days while it moves slowly westward over the eastern tropical Atlantic.

* Formation chance through 48 hours…medium…60 percent
* Formation chance through 7 days…high…90 percent

Caribbean Sea:  There are no active tropical cyclone

>>> Western Caribbean and Gulf of Mexico:

Disorganized showers and thunderstorms located over the southwestern Caribbean Sea are associated with a trough of low pressure. Environmental conditions could support some gradual development of this system, and a tropical depression could form over the next several days while it moves generally northwestward over the northwestern Caribbean Sea and the southern Gulf of Mexico. Interests along the U.S. Gulf Coast should continue to monitor the progress of this system.

* Formation chance through 48 hours…low…10 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 gradually form off the coast of southwestern Mexico during the next day or so. Environmental conditions are expected to be conducive for development after that time, and a tropical depression is expected to form by the end of the week. The disturbance is forecast to meander near or just offshore of the coast of Mexico 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 heavy rainfall across portions of the southwestern coast of Mexico that were already adversely affected by substantial rainfall last week, and interests there should monitor the progress of this disturbance.

* Formation chance through 48 hours…low…30 percent
* Formation chance through 7 days…high…70 percent

>>> South of the Gulf of Tehuantepec:

Invest 96E

Another area of low pressure in the Gulf of Tehuantepec is currently producing disorganized showers and thunderstorms mainly offshore of southern Mexico. The system is forecast to move erratically through mid-week before drifting northward towards the southern Mexican coast, and environmental conditions appear conducive for additional development while the system remains offshore. Regardless of development, heavy rain is possible along most of the coast of southern Mexico and northern Central America throughout this week.

* Formation chance through 48 hours…high…70 percent
* Formation chance through 7 days…high…70 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 280 NM south-southeast of Yokosuka, Japan

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

Tropical Cyclone 20W (Krathon)…is located approximately 282 NM south-southwest of Taipei, Taiwan

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