The latest update to this website was 554am Friday morning (HST)

 

Air Temperatures – The following high temperatures (F) were recorded across the state of Hawaii Thursday…along with these low temperatures Thursday morning: 

78 – 74  Lihue AP, Kauai
77 – 71  Honolulu AP, Oahu
76 – 73  Molokai AP, Molokai
77 – 75  Kahului AP, Maui 
88 – 79  Kona AP, Hawaii
84 – 75  Hilo AP, Hawaii 

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

0.63  Mount Waialeale, Kauai
7.92  Maunawili, Oahu
0.17  Puu Alii , Molokai
0.08  Lanai AP, Lanai
0.16  Wailuku, Maui
0.99  Pali 2, Big Island

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

08  Makaha Ridge, Kauai
14  Oahu Forest NWR, Oahu
12  Molokai 1, Molokai
18  Lanai 1, Lanai
18  Kula 1, Maui
16  PTA West, Big Island

Hawaii’s Mountains – Here’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii. 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 kona low north-northwest, with an associated trough near Kauai/Oahu
(click for larger version)

 


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

 Heavy showers remain active near Kauai and Oahu

 

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

Southerly winds

 

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

Showers locally…some are heavy

 

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 Aloha Friday comments: I’m home here in upper Kula, Maui, Hawaii

Good day everyone, I hope you have a great Friday wherever you happen to be spending it.

42aam, it’s mostly clear this morning here in Kula, with a low temperature of 58 degrees at my place.

542am, the higher level clouds are lighting up a spectacular pink color at sunrise!

Flash Flooding possible with Kona Low (Thursday update)/ A kona low will remain far north of the state, while associated rain bands are expected to develop and linger over portions of the state into the weekend. Heavy showers within these bands may repeatedly move over the islands from the south, with high rainfall rates leading to significant flooding, especially over the typically leeward areas.

Oahu is expected to see the greatest impacts tonight before the rain band drifts westward. The heavy rain threat shifts toward Kauai on Friday, where it may persist through the weekend. There is greater uncertainty with rainfall amounts and potential flash flood impacts over Kauai on Saturday and Sunday. The trend has been for the band to shift west of Kauai earlier, which may lead to quicker improvement in weather conditions over the weekend.

As the flash flood threat shifts to the western half of the state, Maui Island has been removed from the Flood Watch. Moderate to heavy showers are possible on both Maui and Hawaii Islands, particularly Friday and Saturday afternoons, but significant flash flooding is not anticipated.

 

Hawaii’s Broad Brush Weather Overview:  A kona low north of the state will continue drawing unstable tropical moisture northward over the islands into Saturday. Bands of showers producing moderate to heavy rain and isolated thunderstorms will move over the central and western islands.

The kona low will begin to drift away from the state this weekend, with improving trends spreading from east to west. Enhanced rainfall may linger over Kauai and Niihau into Sunday. By Monday all islands will see a dramatic improvement in weather conditions as easterly trade winds return.

Hawaii’s Weather Details:  A kona low northwest of the Hawaiian Islands will begin to slowly drift north away from the state today. A low level trough currently over Oahu will continue to produce periods of moderate to heavy showers across the western islands into the evening hours. Most of the heavy rain and flooding threat will occur along this trough shower band.

The highest 24 hour rainfall totals over Oahu have reached around 10 inches in some locations. A Flood Watch remains in effect for the western islands into the evening, the Flood Watch for Oahu may be cancelled later today as this shower band moves westward into the Kauai Channel.

The latest satellite and local radar imagery this morning shows this shower band moving slowly westward through Oahu this morning, where continued rainfall is expected until around mid-morning. This shower band will then move into the Kauai Channel and approach Kauai from the east.

Shower activity over Kauai will increase from late morning through the overnight hours, as this shower band slowly moves over the garden isle. Rainfall rates under this band are falling up to 1 inch per hour.

Saturday and Sunday…the high pressure ridge will slowly build in north of the island chain this weekend, as the kona low exits the area to the north. Expect more stabilizing conditions with decreasing showers as east to southeast winds spread across the state. By Sunday, the moderate to heavy rainfall threat will diminish over Kauai as more stable conditions fill in across the state.

Monday through Wednesday…more typical easterly trade winds return across Hawaii from Monday onward, with only brief passing showers in the forecast, favoring the typical windward and mountain areas through the middle of next week.

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

Hawaii’s Marine Environment:  Fresh to locally strong south to southeast winds associated with a kona low northwest of the state will persist. A shift out of the east to southeast direction is expected over the weekend through early next week, as it lifts northward and away from the area.

A Small Craft Advisory remains in effect for the windward and leeward Big Island waters (Hamakua Coast and waters near South Point). In addition to the winds, expect locally rough seas in heavy showers or storms that develop, with the best chances being over the waters west of Maui County. Seas should remain just below the advisory level over the exposed Kauai waters as a northwest swell moves through (downward trend expected this weekend).

Surf along south facing shores will remain up through early next week, due to overlapping south-southwest swells expected. The first swell has filled in and will peak, likely holding at the advisory level into Saturday, before briefly lowering.  Expect rough conditions for most southerly exposures, due to a combination of the onshore winds, swell, and periodic heavy showers moving through.

As a result, a High Surf Advisory remains in effect through Saturday. A fresh south-southwest swell will begin to fill in through the day Sunday, then peak at a similar level early next week, before easing through mid-week.

Surf along north and west facing shores will remain up into Saturday, due to a northwest swell generated from the kona low. This swell will lower over the weekend.

Surf along east facing shores will remain well below average through the weekend. An upward trend is possible next week, as the trades return locally and far upstream over the eastern Pacific.

 

The 5 Most Beautiful Scenic Wonders of Oahu

 

 

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

>>> Tropical cyclone formation is not expected during the next 7 days…for the areas above

Northeastern Pacific: There are no active tropical cyclones

South of the coast of southwestern Mexico

>>> An area of low pressure located several hundred miles offshore of the coast of southwestern Mexico continues to produce some disorganized showers and thunderstorms. While environmental conditions appear only marginally favorable due to nearby dry air, some development of this system is possible during the next day or so as the low remains nearly stationary. By late this weekend, the low is forecast to interact or merge with another system to its east, and further development is not expected.

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

South of the coast of southern Mexico

>>> A broad area of low pressure could form several hundred miles to the south of southern Mexico during the next couple of days. Some slow development of this system is possible thereafter as it moves slowly to the west or west-northwest, remaining south of the coast of Mexico by the middle portion of next week.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…30 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:  There are no active tropical cyclones

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean:

Tropical Cyclone 24S (Laly)…is located approximately 629 NM north-northeast of Antananarivo, Madagascar

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:  Now We Know, What Gets Roots to Grow: Can Help in Future Droughts

A biological mechanism familiar to people who fast helps plant roots grow strong. The discovery by University of Copenhagen scientists provides an answer to a long-unanswered question and a deeper understanding of the “mouths” of plants that can help to develop climate-resilient crops.

Imagine eating with your feet and having half your body underground. Such is the life of most plants, with roots as the mouths through which they eat and drink. Roots also serve to anchor plants and keep them safe in wind and rain. Indeed, roots are critical for a plant’s life.

But many things remain unknown about the life of plants. How they grow their roots big and strong has long been a question and there are key pieces missing to the puzzle.

In a new study published recently, researchers from the University of Copenhagen’s Department of Biology share their discovery of how plants control root growth.

Read more at University of Copenhagen – Faculty of Science