#coastalflooding — Public Fediverse posts

Via City of Malibu:

"The National Weather Service has issued a Coastal Flood Warning for Los Angeles County that will be in effect from now through 3pm Sunday afternoon. The periods between 6 am and noon on Saturday and Sunday have the highest risk. The upgrade to a "Warning" highlights the increased risk for damage due to coastal flooding.

The areas of most concern include Long Beach, Avalon, and Malibu.

While south-facing shores have the greatest risk, minor coastal flooding is also possible for west facing shores.

High tides peak Sat-Sun at 7.3-7.6 feet between 9am and 10am, with surf of 4-7 feet.

Sunday morning has the widest range of outcomes due to light to moderate rain, wind, low pressure tidal enhancements, and swells coming from multiple directions. Coastal flooding impacts on Sunday could be similar to today, but they also could be greatly enhanced. While any flooding directly connected to the rain is expected to be minor, accumulating rain could make sea water drainage more challenging for low-lying areas.

Coastal flooding risks will continue through Tuesday or Wednesday, but lower in severity after Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay off of beaches and coastal walkways, roads, and structures.
Do NOT drive around barricades or through water of unknown depth.
Heed advice from local officials.

Remain out of the water due to dangerous surf conditions, or stay
near occupied lifeguard towers. Rock jetties can be deadly in
such conditions, stay off the rocks."

#CAwx #CoastalFlooding #LongBeach #CatalinaIsland #Malibu

California might see more coastal flooding this winter due to El Niño and rising sea levels. #coastalflooding

https://www.latimes.com/california/story/2026-08-24/californias-coast-under-siege-flooding-big-waves-erosion-forecast

Sea level rise threatens more than a quarter of a million properties as bill surges to $855b

"Climate change means Australia's love of the coast is facing a multi-billion-dollar reckoning, research suggests, as rising seas threaten to turn its prized coastal lifestyle into a question of who will foot the bill: property owners or governments."

"Australia could face damage costs of more than $850 billion, with more than $274 billion going to property losses and $580 billion spent on land-use damage."

"We keep warming the planet … so you get more sea level rise, you get higher tides, higher king tides, higher maximum tides," the professor of environmental economics and biosecurity at the University of Melbourne said." >>
https://www.abc.net.au/news/2026-09-10/sea-level-rise-threatens-267000-properties/107131270
#FossilFuels #SeaLevelRise #CoastalFlooding #Climate #ClimateCost #Coast #loss #FoodSecurity #BellingeShire

As Australia’s sea levels rise, safe land is vanishing and costs are huge

"Climate Council forecasts more than 267,000 coastal properties will be damaged by flooding by 2100, costing hundreds of billions of dollars."

"Kompas said the costs – an estimated $274.3bn in property losses and $580.7bn in land use damages – were a conservative estimate and did not take into account the additional impacts of coastal erosion or significant ice sheet melt."

"Kompas said that while reducing greenhouse gas emissions to limit global heating was of paramount importance, “we have to start planning and responding and adapting now. The first thing, of course, is not to build on flood plains, which is common still.” >>
https://www.theguardian.com/environment/2026/sep/10/peters-farm-is-on-flood-country-as-australias-sea-levels-rise-safe-land-is-vanishing-and-costs-are-huge
#FossilFuels #SeaLevelRise #CoastalFlooding #Climate #ClimateCost #Coast #loss #FoodSecurity #BellingeShire

Quantifying UK Coastal Flood Exposure Under Future Sea-Level Rise To [2100 and] 2300
--
https://doi.org/10.1038/s41467-026-74982-1 <-- shared paper
--
https://www.theguardian.com/environment/2026/jul/21/millions-long-term-coastal-flooding-risk-uk-climate-action <-- shared media article
--
H/T @University of Bristol School of Geographical Sciences
“🌊 New research on long-term coastal flooding as a result of climate inaction 🌊
… The researchers found:
🔷 By 2100 at least an additional 0.5 million people exposed to the 1-in-200 year undefended flood extent - a 25% increase compared to present day.
🔷 Under the most pessimistic storyline by 2300 involving significant ice-sheet instability, an additional 13 million people could be exposed to the 1-in-200 year undefended flood event.
🔷 Under some scenarios there is a need for large-scale movement of populations and settlements away from the coast in the coming centuries…”
--
“Up to 13 million people in the UK face the long-term risk of coastal flooding due to the climate crisis, scientists have warned, with a ‘reasonable worst-case scenario’ suggesting the need for the large-scale movement of populations away from a dramatically reshaped coast…
Sea level has risen by about 20cm around the UK in the last century and is accelerating. A further 40cm to 60cm by 2100 is already baked in, meaning about half a million more people will be at risk of their homes being flooded, on top of the 2.5 million already in danger near the coasts. Lincolnshire and the Humber estuary are most in danger…”
--
“The latest Intergovernmental Panel on Climate Change assessment report highlighted the potential for more than 15 metres of global sea-level rise by 2300. In this study, [the authors] explore the implications for UK coastal flood exposure by combining national-scale flood modelling with physically-based storylines of UK sea-level rise. By 2100 all storylines show broadly similar results with at least an additional ½ million people exposed to the 1-in-200 year undefended flood extent, which represents a 25% increase compared to present day. Under the most pessimistic storyline by 2300 involving significant ice-sheet instability, an additional 13 million people could be exposed to the 1-in-200 year undefended flood event. This would imply the potential need for large-scale movement of populations and settlements away from the coast in the coming centuries. Given current global emissions pledges, exposure increases by 1.7 million people by 2300, however up to 1 million could be avoided if Paris Agreement targets for greenhouse gas emissions are met…”
#coast #coastal #innundation #climatechange #global #sealevel #sealevelrise #SLR #flood #flooding #climatechange #population #infrastructure #UK #England #Scotland #Wales #NorthernIreland #Lincolnshire #Humber #estuary #settlement #city #urban #mitigation #planning #policy #infrastructure #risk #hazard #humanimpacts #spatialanalysis #spatiotemporal #GIS #spatial #mapping #coastalflooding #climatecrisis #model #modeling #elevation #DEM

#ExtremeWeather events to become more frequent in #Ireland

By Eithne Dodd
Updated / Monday, 29 Dec 2025

"2025 was the year climate scientists agreed it would be impossible to limit global warming to 1.5C above pre-industrial levels.

"The target was agreed by world leaders back in 2015.

"This means a certain amount of damage to the Earth's environment due to human-induced climate change is irreversible.

"In Ireland, several reports this year found that the state of the country's environment was getting worse.

"#MetÉireann climatologist Paul Moore explained that as Ireland warms, extreme weather events will become more frequent.

"Mr Moore told RTÉ’s This Week that sea level rise is 'locked in', even if global warming was limited to 1.5C.

" 'That means when we get an #ExtremeRainfall event and #HighTides or #SpringTides together, we have compound events where you get #TidalLock, you get #CoastalFlooding as well as the rainfall and not being able to run out into the sea,' he said.

"Mr Moore added: 'So those compound events where sea level rise will come in conjunction with storms and heavy rainfall events causing more impacts.

" 'That's something that's definitely going to increase.'

"There has been a 0.2 metre rise in the sea level off the Irish coast between 1901 and 2018.

"The National Climate Change Risk Assessment identified 115 risks for Ireland in a warming world, among them were coastal flooding, #erosion and #ExtremeWinds."

Read more:
https://www.rte.ie/news/ireland/2025/1228/1550730-global-warming-levels/

#ClimateChange #ClimateCrisis #SeaLevelRise #ExtremeWeather #IrelandWx #ExtremeWx

https://www.alojapan.com/1428889/traffic-disrupted-warning-issued-after-blizzard-batters-japans-hokkaido-3/ Traffic disrupted, warning issued after blizzard batters Japan’s Hokkaido #AirServiceDisruptions #avalanches #blizzard #CoastalFlooding #FloodRisks #GustsOfWind #HeavySnowfall #Hokkaido #HokkaidoNews #Japan #JapanMeteorologicalAgency #news #PowerOutages #RailServiceDisruptions #SnowDepth #StormSurges #StormyConditions #TrafficDisruption #TransportationWarnings #北海道 The blizzard also led to power outages for households in certain regions

Lightning very close, thunderclap very loud, more thunder, heavy wind and rain, power out a few minutes later. @czds and I are enjoying the decision to start with batteries.

#OceanShores #PowerOutage #PNW #SevereWeather #CoastalFlooding

Tropical Storm Matmo: Philippines issues severe coastal flood, storm surge warning for Luzon

#Coastalflooding #Luzon #Philippines #TyphoonMatmo
https://blazetrends.com/tropical-storm-matmo-philippines-issues-severe-coastal-flood-storm-surge-warning-for-luzon/?fsp_sid=136898

I have big plans for tonight! https://www.sfgate.com/weather/article/new-moon-tides-bay-area-shoreline-20347643.php #CoastalFlooding #HighTide #SanFranciscoBay #SFBay

Flood Warnings: Strengthening Coastal Safety

https://rackenzik.com/flood-warnings-strengthening-coastal-safety/

#ClimateChange #CoastalFlooding #SeaLevelRise #StormSurge #ExtremeWeather #FloodRisk #Tsunami #CoastalErosion #FloodWarning #ClimateCrisis #DisasterPreparedness #ResilientCoasts #ClimateAction #GlobalWarming #ProtectTheCoast #ClimateJustice #SustainableLiving #FloodAwareness #NatureBasedSolutions #AdaptToClimateChange

"Just 25 years from now, a total of 23,000 people and 17,000 homes in #Florida will experience annual #CoastalFlooding, with high tides or strong winds that whip ocean water onto land, including into areas that would have previously been unaffected, research by non-profit Climate Central found."

Read more at: https://www.miamiherald.com/news/local/environment/climate-change/article303201211.html

'#WickedHighTide:' Days of #CoastalFlooding in #NortheastUS not over yet

Streets were underwater and people had to slosh through sunken sidewalks as coastal flooding inundated parts of the Northeast since Thursday, and it's not over yet.

By Jesse Ferrell
Published Sep 23, 2024

"A local environmental group in #Boston, #StoneLivingLab, posted signs in the water directing onlookers to its website, which said, 'Wicked High Tides are back! These annual tides are 2-4 feet higher than normal and give us a window into how sea level rise will soon affect our daily lives.'"

Source:
https://www.accuweather.com/en/weather-news/wicked-high-tide-days-of-coastal-flooding-in-northeast-not-over-yet/1694789

#ClimateChange #HighTides #SeaLevelRise

Interesting.. higher than predicted water levels in Hawaii.

"...Coastal Hazard Message
National Weather Service Honolulu HI
300 AM HST Tue Sep 17 2024

...MINOR COASTAL FLOODING DURING HIGH TIDE THROUGH TUESDAY...

.The combination of high astronomical tides and water levels running around 0.6 to 0.8 feet higher than predicted will produce localized coastal inundation around the time of high tide this afternoon...."

https://mesonet.agron.iastate.edu/vtec/#2024-O-NEW-PHFO-CF-S-0006/USCOMP-N0Q-202409141325

#coastalflooding #hightides #hightide

Useful reporting from KYUK in Bethel on making maximum use community knowledge about coastal flooding in northern and western Alaska. @Climatologist49 @Jdnome

https://www.kyuk.org/science-and-environment/2024-08-28/new-research-uses-130-years-of-historic-flood-observations-to-help-identify-future-risks

#akwx #CoastalFlooding

Bering Sea Storm Brings Erosion And Flooding To Western Alaska Communities
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https://alaskapublic.org/2024/08/18/bering-sea-storm-brings-erosion-and-flooding-to-western-alaska-communities/ <-- shared media article
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https://www.hcn.org/articles/how-an-unexpected-storm-reshaped-alaskas-west-coast/ <-- shared media article about the effects of a previous storm
--
#GIS #spatial #mapping #flood #flooding #coastalflooding #Alaska #weather #extremeweather #water #hydrology #risk #hazard #rain #precipitation #erosion #storms #stormsurge #highwind #onshorewind #surf #WesternAlaska #BeringSea #Tuntutuliak #Napakiak #Akiak #Bethel #Kasigluk #Nunapitchuk #Atmautluak #Kipnuk #Kwigillingok #KuskokwimRiver #tidalsurge #bluemoon #infrastructure #road #village #communities #FirstNation

The Potential For Coral Reef Restoration To Mitigate Coastal Flooding As Sea Levels Rise
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https://doi.org/10.1038/s41467-023-37858-2 <-- shared paper
--
#GIS #spatial #mapping #BuckIslandReef #USVirginIsland #USVI #reef #coral #climatechange #stormsurge #extremeweather #flood #flooding #risk #hazard #protection #spatialanalysis #risk #hazard #coast #coastal #sealevel #sealevelrise #SLR #coralreef #reefrestoration #hydrodynamic #coastalflooding #storm #erosion #mitigation #marine #ecosystems

Disruptive flooding of critical infrastructure assets to become 'routine'.

"Critical infrastructure includes buildings and facilities that provide functions necessary to sustain daily life – or that if flooded, could unleash environmental hazards. The full impact of #CoastalFlooding is likely to be significantly worse, as drinking #water facilities, bus and metro stations, and retirement and care facilities for older adults were not included in the UCS study."

https://www.theguardian.com/environment/article/2024/jun/25/rising-sea-levels-flooding

Coastal flooding would increase in England by up to 150 times current day rates with a 1 meter (about 3 foot) sea level rise, study finds. #climate #sealevel #coastalflooding

https://www.sciencedirect.com/org/science/article/abs/pii/S1741759723000038

Boo hiss!

#LD2266: Sand dunes and #SearsIsland wind terminal

Lawmakers changed course and cleared a major hurdle for the development of an offshore wind terminal on Sears Island with the approval of L.D. 2266, which exempts the site from rules governing development on sand dunes

by Emmett Gartner
April 27, 2024

"Like this bill, Gov. Janet Mills’ selected location for a windmill assembly and transportation hub received intense scrutiny from some environmentalists, local residents and tribal members.

"They said the location and exemptions will degrade Sears Island’s sand dune habitat and defenses against #CoastalFlooding, arguing the port should be constructed at nearby #MackPoint, which was also up for consideration."

Read more:
https://www.msn.com/en-us/money/companies/ld-2266-sand-dunes-and-sears-island-wind-terminal/ar-AA1nNRJn

#Maine #WindTerminal #SandDunes #Searsport #Wahsumkik #EndangeredSpecies #ProtectTheDunes #WabanakiAlliance #CulturalGenocide #EnvironmentalRacism

Sea level rise, anybody?

https://www.bbc.co.uk/news/articles/c2qvr64pv7ko

#flooding #CoastalFlooding #Littlehampton #WestSussex #ClimateDiary

The gradual sinking of coastal land areas has been a “silent problem” that figures to exacerbate flooding risks and livelihoods in locales experiencing sea-level rise, such as Houston-area communities along the Gulf Coast, according to a new study.

https://www.houstonpublicmedia.org/articles/climate-change/2024/03/14/480644/sinking-land-combined-with-sea-level-rise-especially-problematic-along-gulf-coast-new-study-finds/

#ClimateChange #EnergyEnvironment #Flooding #Local #News #CoastalFlooding #GulfCoast #IkeDike #RisingSeaLevels #Subsidence

#HinkleyPointC delayed to 2029 at the earliest as budget increases substantially

by Jack Loughran
January 24, 2024

"#Environmental campaigners are currently making efforts to block its construction over claims that the government did not assess the environmental impact of its proposals for a #water supply."

https://eandt.theiet.org/2024/01/24/hinkley-point-c-delayed-2029-earliest-budget-increases-substantially

#NoNukes #UK #CashStrapped #WaterIsLife #EDF #HinkleyPoint #ExtremeWeather #ClimateCrisis #NuclearPlants #UK #CoastalFlooding #RenewablesNow

Kennebunk Fire Rescue says “Town repairs could take months or even years” and "We need people to have a plan and evacuate if need be ahead of time. Leave ahead of time and find a safe place of refuge or shelter before that storm." https://www.newscentermaine.com/article/weather/severe-weather/kennebunk-fire-chief-says-town-repairs-could-take-months-even-years-to-complete-maine-flooding-storms/97-69b8761a-23c8-4e26-8026-913da69ca7db #stormsurge #CoastalFlooding

@lckrohjr @BakerRL75 8 - 9 inches of “water” on ground floor. Water in quotes both because it was mix of salt and fresh, but also because the local sewer pumping station, which is naturally at the lowest point in the neighborhood, flooded and failed. Fortunately, we had moved everything we could to the upper floor. Lost all the appliances, furniture, flooring, a lot of cookware - all insured fortunately. #CoastalFlooding

@BakerRL75 Me too. So glad we took that lesson about only having one road out. Probably should have decided a little earlier, and prepped a bit better. We got too focused on damage mitigation initially - fortunately we figured out when to let go of that plan. #CoastalFlooding #stormsurge

8 hospitalized in #Ventura, #CoastGuard #Helicopter
forced to perform #lifesaving rescue in #Pacifica as dumbasses continue to dumbass and challenge #PacificOcean #ElNino #Storm ...

#Waves Up To 40 Ft Smash #California #coast swamping curious onlookers, fishermen and #surfers who get to close for comfort and dragged deep by the #swells...

#CoastalFlooding brings #Driftwood and #Debris choking roads, damaging piers and homes as wet #weather expected to last throughout weekend

https://www.foxweather.com/weather-news/massive-waves-flood-california-coast-evacuations

‘A Beautiful Place That Has A Dragon’ - Where Hurricane Risk Meets Booming Growth
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https://www.nytimes.com/interactive/2023/11/19/upshot/carolina-hurricanes.html <-- shared media article
--
“Hurricanes have always struck the shores of the United States.
But in recent decades, the combination of climate change and a growing coastal population has made them far more damaging — particularly in one corner of the Atlantic coast…"
#GIS #spatial #mapping #model #modeling #risk #hazard #Carolinas #northcarolina #usa #southcarolina #hurricanes #damage #climatechange #extremeweather #frequency #strength #stormsurge #coastal #population #demographics #atlanticcoast #sealevel #sealevelrise #SLR #flooding #flood #coastalflooding #hydrology #water #populationgrowth #harmsway #growth #economicimpact #cost

"Technically, that #NewYorkCity flood was “mild”"

"Friday’s #floods in #NewYork were actually a double-whammy: A combination of pluvial flooding #CoastalFlooding (storm surge) exacerbated by supermoon-induced high tides.

The rainfall portion–which caused most of the flooding–was anything but mild. “Eight inches of rainfall in 24 hours is just incredible."

But the coastal flooding portion, while definitely bad, was fairly typical."

https://heated.world/p/technically-that-new-york-city-flood