The latest update to this website was at 233pm Saturday (HST)

 

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

81 / m  Lihue AP, Kauai
m / m  Honolulu AP, Oahu
m / 73  Molokai AP, Molokai
84 / 63  Kahului AP, Maui
82 / 70  Kona AP, Big Island
82 / 64  Hilo AP, Big Island

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

0.13  Waiahi RG, Kauai
0.15  Kuaokala, Oahu
0.01  Puu Alii, Molokai
0.01  Lanai City, Lanai
0.00  Maui
0.19  Pohakuloa Keamuku, Big Island

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

13  Port Allen, Kauai
15  Waianae Valley, Oahu
13  Makapulapai, Molokai
15  Lanai 1, Lanai
17  Kahului Harbor, Maui
20  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 well northwest


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

Most areas clear to partly cloudy…with some high clouds in the vicinity

 

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

A dissipating cold front washing out just north

 

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

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

It’s clear, with a low temperature of 49.5 degrees degrees according to my outside temperature sensor.

Heading down to Haiku for Pickleball, and then shopping at Mana Foods in Paia on the way back.

Happy Winter Solstice my friends!

 

Hawaii’s Broad Brush Weather Overview:  Stable and mostly dry conditions, accompanied by light winds, will prevail through Sunday. Trade winds will return Sunday night, bringing a few windward showers, with winds expected to ease slightly and veer to the east-southeast later in the week.

Hawaii’s Weather Details:  Satellite imagery shows mostly clear to partly cloudy skies over land areas across the island chain, as land breezes help to clear out the low-level clouds and showers from the night. Satellite imagery also shows some thin cirrus passing over the eastern end of the state. Winds will remain light across most of the island chain through this weekend, as surface ridging remains overhead.

This pattern will allow for the development of land breezes overnight (as we’ve been seeing lately) that will help to clear out clouds and showers across land areas by morning, and sea breezes during the days, that will bring low clouds and a few showers to island interiors by the afternoons.

Fairly dry and stable conditions will persist through the weekend and most of next week with minimal rainfall expected, despite another cold front that is expected to approach the western end of the state tomorrow night. Model guidance suggests that this weak front will slowly sag close to Kauai, or even edge in across the western end of the state late tomorrow night into Monday morning, then dissipate across the area.

Increased low level moisture in the vicinity of this front may help to boost windward shower activity across Kauai and Oahu tomorrow night into Monday, but rainfall accumulations would likely remain under a few hundredths of an inch.

Whether the front actually makes it into the western end of the islands or stalls just north, model guidance is in good agreement that easterly trades winds will fill in across the state beginning tomorrow night, and then strengthen through Monday, then veer to the east-southeast as high pressure builds to the north and slides eastward.

Pockets of moisture will move in on the trades through the week, but generally dry and stable conditions will persist as ridging aloft dominates.

Heading into next weekend, the ridge aloft may finally weaken in response to an upper level trough digging into the area. Instability from this feature along with the potential for some increasing low-level moisture may lead to some much-needed rain across the state.

Fire weather:  Critical fire weather conditions are not anticipated through the forecast period. For this weekend, winds will remain light and relative humidity (RH) values will remain above 45 percent. Trades will strengthen early next week and then weaken slightly for the latter part of the week, but RH will remain above critical levels to continue to preclude critical fire weather conditions.

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:  An extended period of hazardous marine conditions will persist into early next week, driven by overlapping, winter-caliber northwest swells associated with a progressive storm pattern across the northern Pacific. This pattern features storm- to hurricane-force lows advancing eastward well north of the state.

Recent satellite data and observations indicate a hurricane-force low centered approximately 1,300 nautical miles north of the islands, with seas in the core of its fetch estimated up to 65 feet. A SOFAR drifter buoy recorded seas up to 60 feet, exceeding model forecasts by several feet. While the bulk of the energy from this system is directed northeast of Hawaii due to the west- to- east fetch orientation, the head of the fetch has nosed southward to within 700 nautical miles of the islands.

This southward extension increases confidence in the predicted timing of the swell’s arrival tonight, followed by a rapid rise early Sunday morning, a peak through the day Sunday, and a gradual decline Sunday night into early next week. Surf associated with this swell will remain well above warning levels through the weekend, then return to advisory levels for exposed north and west facing shores around Tuesday of next week.

The prolonged duration of this active period will lead to coastal impacts, including significant beach erosion along exposed shorelines and potential overwash onto vulnerable coastal roadways and properties, especially during Sunday’s peak. These impacts will remain likely despite the monthly tidal minima, underscoring the significance of the swell. In addition to the coastal impacts, these conditions maybe be challenging for mariners transiting in and out of exposed harbors, where strong currents and occasional breaking waves are expected.

Local winds will remain light and variable through Sunday, as a surface ridge lingers over the region. By late Sunday into Monday, moderate northerly winds will develop ahead of an approaching cold front, with breezy trade winds returning early next week, as the ridge strengthens to the north in the wake of the front.

 

 

 

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:  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:  Changes in Store for Atmospheric Rivers

Communities up and down the West Coast of the United States can expect the potent storms known as atmospheric rivers to evolve as the climate warms. But residents in Southern California will see much different changes than residents in more northerly locations like Seattle.

New research, led by scientists at the U.S. National Science Foundation National Center for Atmospheric Research (NSF NCAR), found that warming conditions will increase evaporation of ocean waters and significantly alter atmospheric rivers to the south. Farther north, however, atmospheric rivers will be most influenced by rising temperatures in the ocean and atmosphere.

While such differing processes may seem arcane, they will have real-world consequences for millions of people. By 2100, for example, atmospheric rivers that strike the Pacific Northwest could increase flooding risks by temporarily raising the heights of ocean waters as much as three times more than current storms if society continues to emit greenhouse gases at a high rate. Residents of Southern California will also experience higher storm-driven waters, but not to the extent of those living farther north.

Read more at: National Center for Atmospheric Research/University Corporation for Atmospheric Research