The latest update to this website was at 830pm Wednesday (HST)

 

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

76 / 59  Lihue AP, Kauai
79 / 61  Molokai AP, Molokai
80 / 64  Kahului AP, Maui
82 / 71  Kona AP, Big Island
84 / 66  Hilo AP, Big Island

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

0.17  Mount Waialeale, Kauai
0.07  Kunia Substation, Oahu
0.00  Molokai
0.01  Lanai AP, Lanai
2.50  Hana AP, Maui
0.23  Keaumo, Big Island

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

31  Barking Sands, Kauai
30  Kuaokala, Oahu
16  Molokai 1, Molokai
18  Lanai 1, Lanai
32  Kula 1, Maui
18  Ahumoa, 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 deep low pressure system and its associated cold front are approaching from the west-northwest


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

Variable low clouds across the state

 

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

Thicker clouds are moving over the state from the west

 

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

Localized showers…the bulk of them approaching Kauai

 

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 Wednesday comments:  I’m home here in upper Kula, Maui, Hawaii. I hope you have a good day wherever you happen to be spending it.

It’s cloudy here in upper Kula early this morning, with a low temperature of 49 degrees.

1205pm, partly to mostly cloudy, with light breezes, and a temperature of 66.7 degrees. It appears that the approaching low and cold front have slowed down some, which will perhaps slow down the arrive of the heavy showers and gusty winds.

154pm, getting cloudier by the minute, with an occasional puff of wind, and the volcanic haze (vog) has arrived here on Maui.

6pm, cloudy with no rain here at my place, although there may be a few down in the central valley here on Maui, with light winds so far…and lots of vog.

My high temperature today here at my Kula weather tower was 68.5 degrees…which has dropped to 63.5 degrees at the time of this writing.

830pm, showers, some heavy are approaching Kauai at the time of this writing, while it’s mostly dry with a few showers around the edges here on Maui…hoping for more.

Weather Wit of the day:  Sunbathe – A fry in the ointment

 

Hawaii’s Broad Brush Weather Overview:  Gentle to locally breezy south-southeast winds will continue to strengthen tonight into Thursday, as a strong low approaches from the northwest. This strong winter low pressure system will pass just north of Kauai Thursday, with a cold front advancing down the island chain Thursday through Friday.

The threat of flash flooding, damaging south to southwest kona winds, and strong to severe thunderstorms will precede the front. Conditions will quickly improve behind the front Friday night into the weekend, continuing through early next week.

Hawaii’s Weather Details:  A gale low located roughly 820 miles northwest of Kauai is producing a comma shaped cloud shield, with the eastern edge just offshore Kauai, sending some thin high cirrus  clouds over the state. Radar imagery shows scattered light to moderate showers streaming from south to north over Maui County.

Gentle trades will quickly veer southerly today as the low mentioned above moves east. The band of showers over Maui County should thus shift towards Oahu and parts of Kauai this afternoon, with showers focusing over exposed south and east facing slopes.

Southeast slopes of the Big Island will also see an increase of scattered afternoon showers, as southeasterly flow becomes more prominent. As southerly flow strengthens tonight there will likely be a need to upgrade the High Wind Watch for Kauai to a High Wind Warning and possibly for Oahu and Maui County, as strong downsloping winds quickly develop overnight.

Model guidance remains in good agreement and depicts shower activity increasing tonight and becoming more convective late tonight through early Friday, as the strong surface low pressure passing nearby to the north and its attendant cold front advancing down the island chain.

As the low gets closer, it will support a potential significant event evolving across the state, with impacts ranging from damaging southwest kona winds (downsloping into north thru windward sections), to strong to severe thunderstorms and flash flooding. Additionally, deep convection will support the potential for periods of heavy snow over the Big Island Summits Thursday through Friday.

Conditions will quickly improve over the weekend, as the upper trough and surface low lift northeastward and away and high pressure returns in its wake.

Fire weather:  Critical fire weather conditions not expected through the forecast period.

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 strong low pressure system passing eastward through the area will increase the threats of strong thunderstorms, gale-force winds, and periods of heavy rain across the state. Wind threats will include strong to gale force southwest kona wind speeds from tonight through Thursday, with erratic and damaging wind gusts possible near any thunderstorms.

A cold front will also move across the islands during this time period. Gentle to fresh westerly to northwesterly winds will build in rapidly behind the front along with improving marine weather trends. Marine Weather Warnings are likely during this time due to the high potential for strong thunderstorms. A Gale Watch remains in effect for the waters around Kauai from tonight through Thursday. A Small Craft Advisory will also be needed for all remaining Hawaiian coastal waters during this time period.

A new north-northwest swell will peak below advisory thresholds. A larger north swell should fill in later Thursday into Friday, which could reach advisory levels for north facing shores. Several reinforcing pulses are expected Friday into early next week, as the swell veers more northeasterly and could produce advisory level surf along east facing shores, due to the shift in swell direction this weekend. A moderate west-northwest swell will eventually move in with the overlapping north to northeast swells building in by next week Monday, and then peaking by Tuesday.

Surf along south-facing shores will remain small. Rough and choppy surf will develop along south and west facing shores tonight through Friday, due to the strong south to southwesterly kona winds developing from the passing low pressure system.

 

27 Fun Things To Do In Kauai When It Rains - Hawaii's Best Travel: Top Blog And Podcast To Travel To Hawaii

 

 

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:  There are no active tropical cyclones

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean:  

Tropical Cyclone 11S is located approximately 534 NM south of Diego Garcia

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Tropical Cyclone 12S (Elvis) is located approximately 214 NM southeast of Europa Island

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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:  Marine Ecosystem Survey Encounters a New Variable: Falling Ash from Los Angeles Fires

The devastating fires in Los Angeles have numerous secondary effects as scientists are finding out now off the coast of Southern California.

Researchers from UC San Diego’s Scripps Institution of Oceanography and NOAA Fisheries’ Southwest Fisheries Science Center were collecting samples off the California Coast when the Palisades, Eaton and other fires broke out. The smoke that billowed from those fires dropped ash and debris that coated the ocean surface as much as 160 kilometers (100 miles) offshore.

The ship and its crew began collecting samples of the ash from the deck and the surrounding waters. NOAA has adjusted the ship’s course to make use of the chance to revisit the area to track any effects on the marine ecosystem. The survey is part of the collaborative California Cooperative Oceanic Fisheries Investigations (CalCOFI) program among the state of California, Scripps Oceanography and NOAA.

Read more at: University of California – San Diego

Charred debris collected in CalCOFI seawater samples.