The latest update to this website was at 1011am Tuesday (HST)

 

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

82  / 74  Lihue AP, Kauai
82 / 70   Molokai AP, Molokai
87 / 68  Kahului AP, Maui
84 / 73  Kona AP, Big Island
83 / 67  Hilo AP, Big Island

>>> There are lots of new locations that measure rainfall and winds now, here’s a map of all areas for your reference

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

0.24  Waialae, Kauai
0.16  Pupukea Road, Oahu
0.10  Puu Alii, Molokai
0.00  Lanai
0.17  EMI Baseyard, Maui
0.54  Glenwood, Big Island

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

25  Waimea Heights, Kauai
29  Palehua 3, Oahu
24  Molokai AP, Molokai
18  Lanai 1, Lanai
31  Na Kula, Maui
28  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 northwest


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

Low clouds being carried our way on the trade winds

 

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

High clouds northeast

 

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 Tuesday comments:  I’m here in Corte Madera, Marin County, California, at my friend Linda’s.

Linda and I played 2-hours of pickleball at a nearby court this morning, with a couple of other friends…which was very fun. The weather is mostly cloudy and cool, and it’s forecast to be even cooler tomorrow.

Weather Wit of the day:  I’ve been thinking about this – How did they measure hail before the golf ball was invented?

 

Hawaii’s Broad Brush Weather Overview:  Moderate trade winds will prevail, with showers favoring windward and mountain areas. The trades will ease tonight, with a convective shower pattern then developing Wednesday and continuing through Friday.

A disturbance aloft moving over the islands could bring some heavier showers and even a few thunderstorms as it slowly shifts eastward across the state during this time. A return to a more typical trade wind pattern, along with a gradual increase in trade wind speeds will be possible over the weekend into early next week.

Hawaii’s Weather Details:  Weather maps show a cold front is located west-northwest of Kauai, while a high is centered far northeast of Oahu. The resulting gradient is producing moderate trades across the island chain. Infrared satellite imagery shows mostly cloudy conditions in most windward areas, and clear to partly cloudy skies in most leeward locales. Radar imagery shows scattered showers moving into windward areas, with a few showers reaching leeward communities at times.

The ridge to the north of the islands will gradually weaken and erode during the next couple days, as a cold front approaches from the northwest. Moderate trade winds should hold in place, before easing tonight. The trades will become disrupted Wednesday, with sea breezes common over the western islands, while the trades shift east-southeasterly at light to moderate speeds over the eastern end of the state.

The front will stall northwest of the area Thursday and Friday, with broad troughing in place across the island chain. Land and sea breezes will remain common during this time, with background light east-southeast winds confined to areas around the Big Island. The trough appears to dampen out over the weekend, allowing a gradual return and strengthening of the trades, which will continue into early next week.

Meanwhile, a fairly typical trade wind shower pattern will prevail through tonight, with showers favoring windward slopes and coasts. A slight easing of the trades could allow for an increase in leeward showers this afternoon however, with most of these showers fizzling out quickly in the evening. A transition to a convective pattern is expected Wednesday through Friday, with showers favoring the island interiors during the afternoon and evening hours, and areas near the coast at night.

An upper level trough will move slowly eastward across the state Wednesday night through Friday, with precipitable water values increasing to around 1.5 inches. This will likely result in some heavier showers, particularly during the afternoon and evening hours. Isolated thunderstorms will also be possible as the cold pool aloft moves eastward across the state. A more typical trade wind pattern may slowly return over the weekend into early 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 / Vog map animation

Hawaii’s Marine Environment:  Fresh to strong easterly trade winds will gradually ease and shift out of the east-southeast through the second half of the week, as a front approaches and stalls northwest of the state. Over the western end of the islands, the weakening winds will allow a land and sea breeze pattern to develop.

For the eastern end of the state, moderate to fresh east to southeast breezes, with localized strong pockets, will likely persist, particularly around the Big Island. A return to moderate to fresh easterly trades is possible by the weekend as the ridge reestablishes to the north.

Surf along exposed north and west facing shores will steadily lower through mid-week, as a medium-period northwest swell eases. Observations at offshore buoys to the northwest reflect this downward trend. An upward trend is expected late Thursday as a fresh north-northwest arrives and builds down the island chain. Surf may near the advisory levels for exposed north and west facing shores Thursday night into Friday as this swell peaks. A downward trend is then expected over the weekend.

Surf along east facing shores will trend down through the week, as the trades ease and shift out of the east-southeast.

Surf along south facing shores will remain small through the week, with mainly overlapping background south swells moving through.

 

 

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:  

Tropical Cyclone 30P (Tam)…is located approximately 316 NM east-southeast of Noumea, New Caledonia – Final Warning

https://www.metoc.navy.mil/jtwc/products/sh3025.gif

North and South Indian Ocean:  

Tropical Cyclone 29S (Errol)…is located approximately 264 NM north-northwest of Broome, Australia

https://www.metoc.navy.mil/jtwc/products/sh2925.gif

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:  New Projections Reveal More Extreme Erosion on O’ahu’s Shores

Oahu’s sandy beaches are at risk. New research from the Coastal Research Collaborative (CRC) at the University of Hawaii (UH) at M?noa determined that 81% of Oahu’s coastline could experience erosion by 2100, with 40% of this loss happening by 2030. Importantly, these forecasts of shoreline erosion are more extreme than previous studies indicated for Oahu. The study was published recently in Scientific Reports.

“Our findings reiterate the already observed threat of coastal erosion as a hazard to sea level rise in Hawaii,” said Richelle Moskvichev, geospatial modeler at the CRC in the UH M?noa School of Ocean and Earth Science and Technology and lead author of the study. “In rapidly eroding areas, communities may see damage to roads, homes, or underground infrastructure. Shorelines along the north shore and east side of O?ahu that are backed with hard-armoring, such as seawalls, could experience total beach loss.”

To create erosion predictions, the team of researchers used a computer model that incorporates about thirty years of satellite imagery, as well as aerial and drone imagery. The new model also directly accounts for the seasonal movement of sand. For example, when large swells arrive in the winter on Oahu’s north shore, sand is transported from one part of the beach to another.

Given prior modeling efforts, the team’s own survey observations, and anecdotal evidence from residents, the researchers expected to see erosion predicted for many sandy beaches around Oahu.

Read more at University of Hawaii at Manoa

Image: A residence with a small sandy beach flanked with temporary hardening structures, in Punaluu, Oahu.