Air Temperatures – The following high temperatures (F) were recorded across the state of Hawaii Friday…along with the low temperatures Friday:
85 – 72 Lihue, Kauai
87 – 71 Honolulu, Oahu
87 – 71 Molokai
90 – 67 Kahului AP, Maui
85 – 76 Kailua Kona
83 – 69 Hilo AP, Hawaii
Here are the latest 24-hour precipitation totals (inches) for each of the islands as of Friday evening:
0.02 Lihue, Kauai
0.10 Poamoho RG 1, Oahu
0.05 Molokai
0.00 Lanai
0.00 Kahoolawe
0.13 Ulupalakua, Maui
1.41 Kealakekua, Big Island
The following numbers represent the strongest wind gusts (mph) as of Friday evening:
18 Port Allen, Kauai
23 Oahu Forest NWR, Oahu
23 Molokai
22 Lanai
29 Kahoolawe
14 Maalaea Bay, Maui
25 South Point, Big Island
Hawaii’s Mountains – Here’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (nearly 13,800 feet high) on the Big Island of Hawaii. This webcam is 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.
Aloha Paragraphs
Pacific storm track remains north of the islands…although there is some buckling in the jet stream
Thick higher level clouds over the east side of the state
Variable clouds
Showers locally, fewer than the last several days…mostly offshore
Looping radar image
~~~ Hawaii Weather Narrative ~~~
Broad Brush Overview: A drier and more stable air mass will continue to spread westward across the island chain tonight. A surface ridge of high pressure north of Kauai, will continue to move south tonight, causing the trade winds to further weaken…resulting in local daytime sea breezes Saturday. Stronger trades will start to return Sunday, persisting into the new week ahead.
Details: The upper low pressure system, which caused the recent spell of unsettled weather, remains south of Kauai. The models show the low lingering there through Saturday, before moving westward away from the islands. Despite its closeness to Kauai at the moment, the air mass continues to stabilize across the islands. The Hawaiian weather is quickly returning to a typical trade wind pattern. Cloud patches upwind of the islands could bring overnight showers to the islands, although Kauai will be the least affected…due to the lighter trades there.
Looking Further Ahead: The ridge of high pressure to the north is being suppressed southward by a cold front, which will remain north of the islands. The front stalls well offshore from Kauai Saturday…gradually falling apart through Monday. This front’s dissipation will allow the ridge to head back north, with strengthening trades returning Sunday through at least Tuesday. An upper level trough moving into a position northwest of Kauai Wednesday, may affect our weather during the latter half of next week, although that’s too far enough into the future, to know what influence it may have in our local weather then.
Here’s a wind profile of the Pacific Ocean – Closer view of the islands / Here’s the vog forecast animation / Here’s the latest weather map
Marine environment details: A slow moving low pressure system aloft over the ocean southwest of Kauai, is promoting an unstable atmosphere…over portions of the offshore waters. Models indicate that the low and it’s associated cold air aloft, will linger in this general area through Saturday. This in turn will maintain the potential for heavy shower activity over the offshore waters west of the state.
Meanwhile, a surface ridge of high pressure well north of Kauai, will be weakened and nudged southeast by a cold front that’s forecast to stall just north of the offshore waters this weekend. This will result in a trend toward light to moderately strong east to east-southeasterly breezes into Sunday. As the front weakens and retreats to the north, the surface high to the northeast will build west and strengthen. Thus, we can expect increased trade winds late this weekend into early next week, with Small Craft Advisory wind speeds expected over the windier coastal and channel waters around Maui County and the Big Island.
A south-southwest swell will arrive this weekend, which is expected to result in below advisory level surf along the leeward beaches. A small out-of-season north-northwest swell will fill in this weekend too. Then a potentially larger south-southwest swell is expected to arrive Monday night, continuing through mid-week with associated advisory level surf along south and west facing shores. King tides and associated higher than normal water levels/tides, similar to those seen over the last 2 months, are expected again next week…with the highest tides slated for Friday.
King tides are simply the very highest tides. They are naturally occurring, predictable events. Tides are the movement of water across Earth’s surface caused by the combined effects of the gravitational forces exerted by the Moon, Sun, and the rotation of Earth…which manifest in the local rise and fall of sea levels.
Improving weather…trade winds
>>> Southern California Weather Brief: Strong high pressure aloft will build in and persist across the region through much of next week, bringing sunny and hot conditions. There will be the potential for record breaking heat across interior areas. Night through morning low clouds across some coastal areas will help keep coastal areas relatively cool through this upcoming heat wave.
Clear with low clouds offshore…extending inland locally
World-wide tropical cyclone activity
>>> Atlantic Ocean: No active tropical cyclones
A tropical wave located about 1500 miles east-southeast of the southern Windward Islands is producing scattered showers and thunderstorms. This disturbance has changed little in organization since yesterday. However, some development is expected during the next few days before conditions become less favorable for tropical cyclone formation. This system is expected to continue moving toward the west or west-northwest at 15 to 20 mph over the tropical Atlantic during the next several days.
* Formation chance through 48 hours…medium…40 percent
* Formation chance through 5 days…high…70 percent
>>> Caribbean: No active tropical cyclones
A broad trough of low pressure is producing a large area of cloudiness and showers over the northwestern Caribbean Sea and the adjacent land areas. Conditions appear to be favorable for gradual development of this large disturbance while it moves slowly northwestward across the Yucatan Peninsula this weekend, and a tropical cyclone could form early next week over the southern or central Gulf of Mexico. Regardless of development, heavy rains are likely to spread over portions of Central America, the Yucatan Peninsula, Jamaica, the Cayman Islands, and western Cuba during the next several days.
* Formation chance through 48 hours…low…20 percent
* Formation chance through 5 days…high…70 percent
>>> Gulf of Mexico: No active tropical cyclones
Here’s a satellite image of the Caribbean Sea…and the Gulf of Mexico
Here’s the link to the National Hurricane Center (NHC)
>>> Eastern Pacific: No active tropical cyclone
No tropical cyclones are expected during the next 5-days
Here’s a wide satellite image that covers the entire area between Mexico, out through the central Pacific…to the International Dateline.
Here’s the link to the National Hurricane Center (NHC)
>>> Central Pacific: No active tropical cyclones
No tropical cyclones are expected during the next 5-days
Here’s the NOAA 2016 Hurricane Season Summary for the Central Pacific Basin
Here’s a link to the Central Pacific Hurricane Center (CPHC)
>>> Northwest Pacific Ocean: No active tropical cyclones
>>> North and South Indian Oceans / Arabian Sea: No active tropical cyclones
Here’s a link to the Joint Typhoon Warning Center (JTWC)
Interesting: Feeling the Heat: How Fish Are Migrating from Warming Waters – Steadily rising ocean temperatures are forcing fish to abandon their historic territories and move to cooler waters. The result is that fishermen’s livelihoods are being disrupted, as fisheries regulators scramble to incorporate climate change into their planning.
The Cape Cod Canal is a serpentine artificial waterway that winds eight miles from Cape Cod Bay to Buzzards Bay. On warm summer evenings, anglers jostle along its banks casting for striped bass. That’s what 29-year-old Justin Sprague was doing the evening of August 6, 2013, when he caught a fish from the future.
At first, Sprague thought the enormous fish that engulfed his Storm blue herring lure was a shark. But as he battled the behemoth in the gloaming — the fish leaping repeatedly, crashing down in sheets of spray — he realized he’d hooked something far weirder. When the fisherman finally dragged his adversary onto the beach, a small crowd gathered to admire the creature’s metallic body, flared dorsal fin, and rapier-like bill. Sprague had caught a sailfish.
It doesn’t take an ichthyologist to know that sailfish don’t belong in the Cape Cod Canal. Istiophorus albicans favors the tropics and subtropics; it so rarely visits New England that Massachusetts didn’t even have a state record. But strange catches — including cobia and torpedo rays — have become more commonplace. Over the last decade, the Gulf of Maine, the basin that stretches from Cape Cod to Nova Scotia, has warmed faster than nearly every other tract of ocean on earth, as climate change joined forces with a natural oceanographic pattern called the Atlantic Multidecadal Oscillation to increase sea surface temperatures by 3.6 F from 2004 to 2013. The results have been ecological transformation, upheaval in marine fisheries management, and an alarming window onto the warm future of global oceans.
Although the Gulf of Maine has faced tumultuous change, it’s far from the only marine ecosystem being turned upside-down. The general — although far from universal — trend, according to a 2013 Nature study, is that fish in hot water flee toward higher latitudes, moving poleward to remain within their preferred temperature ranges. In Portugal, fishermen have caught nearly 20 new species in recent years, many from warmer climes. Chinook salmon are infiltrating Arctic rivers that they rarely, if ever, entered before, even as salmon are imperiled by drought and warming waters in California and Oregon. And in northern Europe, says Steve Simpson, a marine ecologist at the University of Exeter in England, sardines have replaced herring, coldwater-loving cod and haddock are heading north, and bottom-dwelling sole risk being “pushed off a cliff” as suitably cool water temperatures drift away from the continental shelf.
“I’m optimistic that we can have sustainable and productive fisheries, but they’re not going to be the fish we used to catch,” Simpson says. “It’s a changing of the guard.”
For decades, the ocean has served as our best defense against climate change, absorbing 90 percent of the atmosphere’s excess heat. But acting as a planetary sponge has taken a toll. Since 1970, global sea surface temperature has increased by around 1 degree F. The ocean is warmer today than at any time since record-keeping began in 1880.
As water temperatures have spiked along the U.S. East Coast, the Atlantic’s inhabitants have undergone a dramatic rearrangement. According to an analysis by researchers at Rutgers University, black sea bass, once most abundant off the coast of North Carolina, have shifted two degrees of latitude north, to New Jersey, over the last half-century. Lobsters have all but vanished from Long Island Sound — where rising temperatures have made the crustaceans more susceptible to disease — and, at least for now, proliferated in the Gulf of Maine. Butterfish have supplanted herring in the Gulf, with disastrous consequences for baby puffins, which struggle to swallow the disc-shaped interlopers and starve to death. Even blue crabs, the invertebrate icon of Chesapeake and Delaware bays, have arrived in the Gulf of Maine. A recent study in the journal Progress in Oceanography suggested that continued warming could reduce the range of species from Acadian redfish to thorny skate.
Although warming water is the most immediate agent of oceanic chaos, it’s just one front in climate change’s three-pronged assault on marine life. As the ocean absorbs carbon dioxide, it becomes more acidic and less saturated with the calcium carbonate that organisms like corals and pteropods — planktonic snails that support food webs — need to build shells. Fish are far from immune: Ocean acidification may disrupt the development of larval fish and reduce their survival rates, according to a study last year in the journal PLOS One.
Deoxygenation is an even more immediate threat. Scientists have long been acquainted with low-oxygen “dead zones” that form annually in the Gulf of Mexico, the Chesapeake Bay, and other coastal areas where agricultural runoff accumulates. As oceans heat up, those localized hypoxic areas are expected to spread: Not only does warm water hold less dissolved oxygen than cool water, it also tends to divide into layers that don’t readily mix. According to one recent study, the ocean has been losing oxygen since the mid-1980s, likely because rising temperatures have impeded circulation. Lisa Levin, a professor at Scripps Institution of Oceanography, points out that not all creatures are equally fazed: Along the naturally oxygen-poor Pacific Coast, marine life is well evolved to cope. But all animals have their limits.
“When oxygen goes way down, it’s effectively habitat loss,” Levin says. “They might move north, they might move upslope into shallower water.” Species that can’t easily relocate, like muck-dwelling invertebrates, may perish.
The cruel corollary to deoxygenation is that warmer waters also drive up animals’ metabolic rates, forcing them to use more oxygen to breathe. As Curtis Deutsch, a chemical oceanographer at the University of Washington, puts it, “They need more, at the same time that they have less.” In 2015, Deutsch and co-authors published a study in Science analyzing how the double bind of warm water and deoxygenation would change distributions for common species like cod, rock crab, and eelpout. Deutsch found the creatures would lose 14 to 26 percent of their habitat. “If you’re going to manage for the long-term viability of fisheries, you need to think carefully about the patterns of oxygen loss in the ocean,” Deutsch says.
When climate change and its harmful effects force fish to relocate, entire ecosystems can suffer. That’s what’s happened in the Mediterranean, Australia, and Japan, where tropical grazers like parrotfish, butterflyfish, and rabbitfish have colonized once-temperate ecosystems. As these herbivores expand their range, they graze kelp forests to nubbins, leaving barren wastelands in their wake — a phenomenon known in Japan as isoyake.
Adriana Vergés, a marine ecologist at the University of New South Wales, says that the tropical incursion has created opportunities as well as crises. In the Mediterranean, a cottage fishery has developed around seaweed-munching rabbitfish, while coral has filled the niche vacated by kelp in some Japanese waters. But in other places, the disruption has been catastrophic: Vergés says that the combination of overgrazing and warming water has reduced the extent of kelp by around 60 miles along the coast in Western Australia, depleting valuable species, like abalone and lobster, which take cover beneath seaweed canopies. Vergés fears that kelp and its dependents may be driven south along the Australian coast until they simply run out of near-shore habitat.
“Here, species move toward the poles,” she says, “but there comes a point where they can’t move anymore.”
While poleward shifts are the rule, exceptions abound. In the Gulf of Maine, many species are drifting southwest instead, seeking cooler spots that form closer to shore. A 2013 Science study analyzed more than 350 groups of marine organisms and found that their movements closely followed local “climate velocity,” the rate and direction of climatic change. More surprising was that those shifts didn’t always track northward — species in the Gulf of Alaska, for instance, moved south in concord with a natural cycle of Pacific cooling. The lesson: The ocean doesn’t warm uniformly, and local conditions drive fish movements as much as broader trends.
In the face of rapid turnover, some agencies and fishing communities have begun considering seafood’s future. In 2016, National Oceanic and Atmospheric Administration (NOAA) scientists found that around half the Northeast’s fish and shellfish were highly vulnerable to climate change — particularly species like shad, salmon, and sturgeon, which spend part of their lives in freshwater and must therefore contend with changing conditions in rivers as well as oceans. A parallel NOAA study suggested that ports whose economic fates are hitched to vulnerable species — like New Bedford, Massachusetts, which depends on scallops for around 80 percent of its landings — face particular risk, while towns like Point Judith, Rhode Island, whose fishermen catch the gamut from squid to monkfish to lobster, could fare better.
“Ports with fairly diverse fishing portfolios might have an easier time adapting,” says Jon Hare, director of NOAA’s Northeast Fisheries Science Center.
As stocks shift, many fishermen face a choice: follow the schools northward, or pursue different species. Either way, larger-scale, well-heeled fishermen have an advantage, spelling further trouble for beleaguered “day boats” whose captains are already burdened by overfishing, stringent regulations, and industry consolidation. “It may be more difficult for (small-scale) fishermen to react to climate change, because they have less ability to go longer distances, they can carry fewer fish, and they may have less familiarity with fish species in another area,” warns Tom Nies, chairman of the New England Fishery Management Council.
In fits and starts, regulators have begun incorporating climate change into their decision-making: In 2014, for instance, NOAA used water temperature data to set catch limits for butterfish. But such case studies, Nies says, have been “few and far between,” and most regulations remain frustratingly rigid. As summer flounder, black sea bass, and other species migrate north, catch allocations have been slow to follow. Fishermen in North Carolina hold the highest black sea bass quota, for instance, even though the fishery has crept into New England. The absurd upshot is that North Carolinians must motor north for ten hours to catch their share, while New Englanders often have to discard bass.
“The impacts of a changing climate will be far more severe if the data used — and regulation that follows — fails to keep pace with environmental changes,” U.S. Senators Chris Murphy and Richard Blumenthal of Connecticut cautioned in a 2016 letter to the inspector general of the Department of Commerce, which oversees NOAA.
The squabble over sea bass quotas looks positively tame compared to Europe’s so-called “herring and mackerel wars.” That altercation arose around 2010, as warming seas drove the two prized species away from Scottish and Irish waters and toward Iceland and the Faroe Islands. After Iceland and the Faroes — neither of which is a member of the European Union — unilaterally raised their own fishing quotas to exploit the sudden abundance, the irate EU imposed trade sanctions to rein in the catch. Although the combatants eventually negotiated a deal, the University of Exeter’s Simpson warns that the world almost certainly hasn’t seen the last of international disputes over border-crossing fish.
While fisheries managers can’t predict precisely how individual species will respond to warming oceans, they can implement nimbler regulatory systems capable of responding swiftly to environmental change. When a vast pool of warm water, dubbed “The Blob,” materialized in the eastern Pacific in the past several years — an oceanographic oddity that, while not directly caused by climate change, had similar biodiversity-scrambling effects — Elliott Hazen, an ecologist at NOAA’s Southwest Fisheries Science Center, says the agency used it as a “climate stress test,” an opportunity for the government to assess its preparedness for future warming. For example, after California fishermen began hauling up halibut that usually dwell farther north — fish that had perhaps been displaced from their normal range by the Blob — the Pacific Fishery Management Council rapidly redistributed quotas from anglers in southern Oregon to fishermen in the Golden State.
The future of global fish movements may be murky, Hazen says, but scientists and managers need to get better at expecting the unexpected. “There are always going to be unforeseen events,” says Hazen. “What you can do is make sure your management plans are climate-ready.”
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