The latest update to this website was at 351pm Monday (HST)

 

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

83 / 73  Lihue AP, Kauai
m / m  Honolulu AP, Oahu
m / m  Molokai AP, Molokai
83 / 71  Kahului AP, Maui
84 / 71  Kona AP, Big Island
81 / 68  Hilo AP, Big Island

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

0.14  Hanalei, Kauai
0.01  Kamananui Stream, Oahu
0.00  Molokai
0.00  Lanai
0.02  West Wailuaiki, Maui
0.20  Hilo AP, Big Island

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

27  Port Allen, Kauai
35  Honolulu AP, Oahu
33  Makapulapai, Molokai
33  Lanai 1, Lanai
42  Kahului AP, Maui
38  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 dissipating near Kauai…another cold front northwest


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

Most areas are clear to partly cloudy…some cloudy spots

 

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

An area of high clouds approaching from the north

 

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

Generally dry…a few windward 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, Hawaii. I hope you have a good Monday wherever you happen to be spending it.

It’s clear, with a cool low temperature of 50 degrees according to my outside temperature sensor.

Mid-afternoon, some clouds around the edges, with a mix or clear to cloudy areas, along with the gusty trade winds.

 

Hawaii’s Broad Brush Weather Overview:  A high pressure system passing north of the Hawaiian Islands will keep moderate to breezy trade winds blowing through Wednesday. Brief passing showers are possible mainly over windward and mountain areas, favoring the overnight hours.

An early winter cold front approaching the island chain from the northwest, will weaken the ridge with light southeasterly winds and sea breezes from Thursday through Friday.

Hawaii’s Weather Details:  Satellite imagery shows the remnants of a cold front stalling and breaking up just north of Kauai. Building northeast trade winds will push cloud remnants of this system into the western islands, producing brief periods of showers mainly along windward and mountain slopes of Kauai and Oahu. The eastern islands will likely remain under the stabilizing influence of the subtropical ridge, limiting shower potential.

GOES satellite and South Point radar imagery also confirms that Kilauea Volcano has erupted around 230am with very light ash possibly drifting over the Kau District of the Big Island, on the moderate east-northeast trade winds. A Special Weather Statement was issued for the light ash potential from this and subsequent eruptions from the Halemaumau Crater on the Kilauea Summit. Haze from the VOG (Volcanic Fog/Smog) was mainly affecting the Kau District.

Looking at the wind forecast for this week, we see a high pressure system located northwest of the state drifting eastward. This system will produce moderate to breezy trade winds over the islands, which will continue to blow from the northeast to east through Wednesday. This high center will then drift into the East Pacific, away from the islands as a cold front approaches the state from the northwest.

This frontal trough and upper level trough will weaken the subtropical ridge near the islands. Wind speeds will decrease to light to moderate southeasterly, with expanding sea breezes for all islands. Another migratory high passing north of the state will bring another round of trade winds to the Hawaii area with time.

Weather wise, a stable ridge aloft will keep low temperature inversion heights in place for much of the week. The one exception will be with the dissipating cold front stalling near Kauai, coupled with an upper level trough. The low level instability from the remnant frontal cloud bands along with the trough, will potentially combine forces next weekend to bring a brief period of enhanced trade wind showers for all islands.

Fire weather:  No critical fire weather conditions are expected for the next 7-days. Mostly dry weather are forecast across the state with limited shower activity as the dry spell continues.

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:  Hazardous marine conditions will persist, with the largest in a series of extra-large northwest swells holding. Observations at the buoys have been trending down, but remain large enough to extend the warning/advisories. A gradual downward trend is anticipated thereafter, with surf potentially falling below advisory levels late Tuesday through Wednesday, as the swell continues to ease.

This extended period of warning-level surf, which began last Wednesday, has already produced significant coastal impacts, including considerable beach erosion along exposed shorelines, with water periodically overtopping vulnerable low-lying roadways and properties. These impacts will remain possible, particularly through the morning high tide cycle, despite the monthly tidal minima.

Fresh to strong easterly trades have returned and will persist through Tuesday, as the surface ridge builds north of the area. A Small Craft Advisory (SCA) is now in effect for all Hawaiian waters due to a combination of strong trades and for high seas over exposed waters. Trades are expected to gradually ease and shift southeasterly around Wednesday as the ridge weakens.

Surf along east facing shores will briefly pick up through the first half of the week, with rough conditions expected. A downward trend is possible later in the week.

For the second half of the holiday week, another warning-level northwest swell is possible (albeit smaller than Sunday) due to a storm-force low currently evolving over the far northwest Pacific, southeast of the Kamchatka Peninsula. A broad wind field associated with this feature is focused at the islands along the 300 to 320 directional bands, with high seas predicted over the next couple of days, as the system tracks eastward toward the Date Line.

 

 

 

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: 

Tropical Cyclone 28W (Pabuk) is located approximately 324 east-northeast of Ho Chi Minh City, Vietnam

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:  First-Of-Its-Kind Study Uses Remote Sensing to Monitor Plastic Debris in Rivers and Lakes

Remote sensing creates a cost-effective solution to monitoring plastic pollution.

A first-of-its-kind study from researchers at the University of Minnesota Twin Cities shows how remote sensing can help monitor and remove plastic debris from freshwater environments like the Mississippi River.

The research, published in Nature, a peer-reviewed scientific journal, helps to increase the understanding of plastic debris behavior in freshwater environments.

Plastic pollution in oceans continues to be a growing environmental issue, with the United Nations Environment Program naming it one of the leading pollution challenges. But, plastic pollution in lakes and rivers, or freshwater environments, has garnered less attention.

Read more at University of Minnesota