The 10th Copernicus Ocean State Report (OSR10) was published today: marine.copernicus.eu/news/publica...
In the report, we have a paper on record-low sea levels in the Bothnian Bay in Nov 2024, caused by an extreme windstorm event (Storm Jari).
Open-access paper: sp.copernicus.org/articles/7-o...
In the report, we have a paper on record-low sea levels in the Bothnian Bay in Nov 2024, caused by an extreme windstorm event (Storm Jari).
Open-access paper: sp.copernicus.org/articles/7-o...
Record low sea levels in the Bothnian Bay in November 2024
Abstract. On 21 November 2024, there was an extreme event within the Bothnian Bay, a sub-basin of the Baltic Sea, when a record low sea level of −153 cm was measured at Kemi, at the northern end of th...
sp.copernicus.org
September 30, 2026 at 8:20 AM
The 10th Copernicus Ocean State Report (OSR10) was published today: marine.copernicus.eu/news/publica...
In the report, we have a paper on record-low sea levels in the Bothnian Bay in Nov 2024, caused by an extreme windstorm event (Storm Jari).
Open-access paper: sp.copernicus.org/articles/7-o...
In the report, we have a paper on record-low sea levels in the Bothnian Bay in Nov 2024, caused by an extreme windstorm event (Storm Jari).
Open-access paper: sp.copernicus.org/articles/7-o...
Today’s #BirdOfTheDay theme is:
#Seabirds; any bird found at sea or the coast
#birds #linnut 🪶
Harmaalokki, Larus argentatus
Perämeren rannalla. On the shores of the Bothnian Bay.
#Seabirds; any bird found at sea or the coast
#birds #linnut 🪶
Harmaalokki, Larus argentatus
Perämeren rannalla. On the shores of the Bothnian Bay.
September 27, 2026 at 8:40 AM
Today’s #BirdOfTheDay theme is:
#Seabirds; any bird found at sea or the coast
#birds #linnut 🪶
Harmaalokki, Larus argentatus
Perämeren rannalla. On the shores of the Bothnian Bay.
#Seabirds; any bird found at sea or the coast
#birds #linnut 🪶
Harmaalokki, Larus argentatus
Perämeren rannalla. On the shores of the Bothnian Bay.
The Bothnian Bay is completely frozen. The ongoing high-pressure dominated and cold weather type will continue to favour sea ice formation in the Baltic Sea.
www.ilmatieteenlaitos.fi/jaatilanne
www.ilmatieteenlaitos.fi/jaatilanne
January 29, 2026 at 1:11 PM
The Bothnian Bay is completely frozen. The ongoing high-pressure dominated and cold weather type will continue to favour sea ice formation in the Baltic Sea.
www.ilmatieteenlaitos.fi/jaatilanne
www.ilmatieteenlaitos.fi/jaatilanne
According to FMI wave buoy measurements, the significant wave height reached 11.1 meters last night in the Bothnian Sea.
If true, it would be the highest waves ever recorded in the Baltic Sea.
en.ilmatieteenlaitos.fi/wave-height?...
If true, it would be the highest waves ever recorded in the Baltic Sea.
en.ilmatieteenlaitos.fi/wave-height?...
December 28, 2025 at 6:40 AM
According to FMI wave buoy measurements, the significant wave height reached 11.1 meters last night in the Bothnian Sea.
If true, it would be the highest waves ever recorded in the Baltic Sea.
en.ilmatieteenlaitos.fi/wave-height?...
If true, it would be the highest waves ever recorded in the Baltic Sea.
en.ilmatieteenlaitos.fi/wave-height?...
Bothnian Sea
Between my homeland and my birth land ❤️❤️
Between my homeland and my birth land ❤️❤️
November 12, 2024 at 8:54 PM
Bothnian Sea
Between my homeland and my birth land ❤️❤️
Between my homeland and my birth land ❤️❤️
We had a power cut during the day, but I had made a cup of coffee a minute before. For the #AlphabetChallenge one frozen Bothnian sea, with #lines from the snowmobiles that go out for, mostly, ice fishing.
#WeekLforLines
Have a great evening all.
#EastCoastKin
#Photography
#BlueskyMonday
#WeekLforLines
Have a great evening all.
#EastCoastKin
#Photography
#BlueskyMonday
September 15, 2025 at 4:50 PM
We had a power cut during the day, but I had made a cup of coffee a minute before. For the #AlphabetChallenge one frozen Bothnian sea, with #lines from the snowmobiles that go out for, mostly, ice fishing.
#WeekLforLines
Have a great evening all.
#EastCoastKin
#Photography
#BlueskyMonday
#WeekLforLines
Have a great evening all.
#EastCoastKin
#Photography
#BlueskyMonday
“While the last ice floes have just melted off the end of the Bothnian Bay, the daily mean sea surface temperature at the Gulf of Finland wavebuoy reached 19.5 °C.
That's ten degrees (!) above the median for 2002-2023.” - @mikarantane.bsky.social
#MarineHeatwave
That's ten degrees (!) above the median for 2002-2023.” - @mikarantane.bsky.social
#MarineHeatwave
June 4, 2024 at 5:43 PM
“While the last ice floes have just melted off the end of the Bothnian Bay, the daily mean sea surface temperature at the Gulf of Finland wavebuoy reached 19.5 °C.
That's ten degrees (!) above the median for 2002-2023.” - @mikarantane.bsky.social
#MarineHeatwave
That's ten degrees (!) above the median for 2002-2023.” - @mikarantane.bsky.social
#MarineHeatwave
no one had any geographic education or sense of proportion back then though. he probably drank bothnian bay at most
August 27, 2023 at 3:08 AM
no one had any geographic education or sense of proportion back then though. he probably drank bothnian bay at most
Boomer year for #ruffs at Bothnian Bay. An incredible 88 nests at our study sites hatched so far, as predation and flooding have been unusually low. #ornithology #conservation #waders
June 18, 2026 at 2:38 PM
Boomer year for #ruffs at Bothnian Bay. An incredible 88 nests at our study sites hatched so far, as predation and flooding have been unusually low. #ornithology #conservation #waders
🪿 A ♂ Lesser White-fronted Goose tagged by @birdlifenorge.bsky.social in N Norway (May 2024) migrated from Hiiumaa 🇪🇪 via S & W Finland 🇫🇮 to the Finnish Bothnian Bay coast on Sunday, 27 April.
📍Route map attached. (c) BirdLife Norway
Another tagged bird remained on Hiiumaa this morning.
📍Route map attached. (c) BirdLife Norway
Another tagged bird remained on Hiiumaa this morning.
April 29, 2025 at 12:47 PM
🪿 A ♂ Lesser White-fronted Goose tagged by @birdlifenorge.bsky.social in N Norway (May 2024) migrated from Hiiumaa 🇪🇪 via S & W Finland 🇫🇮 to the Finnish Bothnian Bay coast on Sunday, 27 April.
📍Route map attached. (c) BirdLife Norway
Another tagged bird remained on Hiiumaa this morning.
📍Route map attached. (c) BirdLife Norway
Another tagged bird remained on Hiiumaa this morning.
Judging by the MEPS wind gust for SW-Finland, I wouldn't be surprised if the warning level were upgraded to red, which in summer requires wind gusts of 25 m/s.
At the western coast, the wind will pick up very quickly as the centre of the low passes over the region.
At the western coast, the wind will pick up very quickly as the centre of the low passes over the region.
July 3, 2025 at 6:58 AM
Judging by the MEPS wind gust for SW-Finland, I wouldn't be surprised if the warning level were upgraded to red, which in summer requires wind gusts of 25 m/s.
At the western coast, the wind will pick up very quickly as the centre of the low passes over the region.
At the western coast, the wind will pick up very quickly as the centre of the low passes over the region.
Consoling myself with the current view
September 27, 2025 at 11:10 AM
Consoling myself with the current view
Bothnian Bay (Perämeri) have only data and electrical cables between Finland and Sweden and merchant ships to Finnish and Swedish ports pass there. You cannot sail from the Bothnian Bay to the Arctic Ocean, for example.
July 18, 2025 at 1:04 PM
Bothnian Bay (Perämeri) have only data and electrical cables between Finland and Sweden and merchant ships to Finnish and Swedish ports pass there. You cannot sail from the Bothnian Bay to the Arctic Ocean, for example.
The ice season in the Baltic Sea ended record-early: on 10 May 2026 the sea was ice-free. This is the earliest date on record, tied with 2015.
This is an extremely exceptional event, given the maximum ice cover in the Baltic Sea was the widest since 2011. Who would have believed this in February?
This is an extremely exceptional event, given the maximum ice cover in the Baltic Sea was the widest since 2011. Who would have believed this in February?
May 12, 2026 at 6:33 AM
The ice season in the Baltic Sea ended record-early: on 10 May 2026 the sea was ice-free. This is the earliest date on record, tied with 2015.
This is an extremely exceptional event, given the maximum ice cover in the Baltic Sea was the widest since 2011. Who would have believed this in February?
This is an extremely exceptional event, given the maximum ice cover in the Baltic Sea was the widest since 2011. Who would have believed this in February?
Videos filmed at Finnish rainbow trout farms reveal the suffering of fish under intensive production conditions. These videos were recorded during the summer and autumn of 2024 at 12 farms in the Bothnian Sea, Archipelago Sea, and Gulf of Finland regions. www.youtube.com/watch?v=46sP...
SUFFERING BENEATH THE SURFACE
YouTube video by Oikeutta eläimille
www.youtube.com
February 18, 2025 at 12:34 PM
Videos filmed at Finnish rainbow trout farms reveal the suffering of fish under intensive production conditions. These videos were recorded during the summer and autumn of 2024 at 12 farms in the Bothnian Sea, Archipelago Sea, and Gulf of Finland regions. www.youtube.com/watch?v=46sP...
The majority of the Gulf of Finland now has a sea ice cover. The Bothnian Bay is already fully frozen.
The cold weather is projected to continue.
The cold weather is projected to continue.
February 1, 2026 at 1:22 PM
The majority of the Gulf of Finland now has a sea ice cover. The Bothnian Bay is already fully frozen.
The cold weather is projected to continue.
The cold weather is projected to continue.
Some sky dancers just dropped by.
September 29, 2025 at 11:13 PM
Some sky dancers just dropped by.
As expected, the event has been upgraded to the highest, red level. Turku region seems to take the strongest hit. Stay safe in the affected areas!
en.ilmatieteenlaitos.fi/warnings
en.ilmatieteenlaitos.fi/warnings
July 3, 2025 at 9:24 AM
As expected, the event has been upgraded to the highest, red level. Turku region seems to take the strongest hit. Stay safe in the affected areas!
en.ilmatieteenlaitos.fi/warnings
en.ilmatieteenlaitos.fi/warnings
The Bothnian Bay.
Monday morning: South 14–17 m/s. Monday evening: easing.
Monday morning: South 14–17 m/s. Monday evening: easing.
September 28, 2026 at 1:31 AM
The Bothnian Bay.
Monday morning: South 14–17 m/s. Monday evening: easing.
Monday morning: South 14–17 m/s. Monday evening: easing.
Unfortunately, the model outputs for the upcoming windstorm have become a bit more concerning. Both MEPS and ECMWF are now predicting wind gusts in excess of 30 m/s for Thursday night. This could potentially become the strongest windstorm on record for July.
July 2, 2025 at 8:11 AM
Unfortunately, the model outputs for the upcoming windstorm have become a bit more concerning. Both MEPS and ECMWF are now predicting wind gusts in excess of 30 m/s for Thursday night. This could potentially become the strongest windstorm on record for July.
Happy days! My youngest just got a little pike (catch and release). Bothnian bay in Sweden close to Piteå. On our way to Randijaur, just above the artic circle, to celebrate midsummer and the midnight sun ☀️🇸🇪
June 18, 2026 at 3:35 PM
Happy days! My youngest just got a little pike (catch and release). Bothnian bay in Sweden close to Piteå. On our way to Randijaur, just above the artic circle, to celebrate midsummer and the midnight sun ☀️🇸🇪
All Finnish icebreakers are busy assisting maritime traffic, and the #seaice on the #BalticSea continues to expand. If the Bothnian Sea becomes fully ice-covered this winter, it would be the first time since February 2011.
Follow the daily ice situation at:
en.ilmatieteenlaitos.fi/ice-conditio...
Follow the daily ice situation at:
en.ilmatieteenlaitos.fi/ice-conditio...
February 5, 2026 at 3:11 PM
All Finnish icebreakers are busy assisting maritime traffic, and the #seaice on the #BalticSea continues to expand. If the Bothnian Sea becomes fully ice-covered this winter, it would be the first time since February 2011.
Follow the daily ice situation at:
en.ilmatieteenlaitos.fi/ice-conditio...
Follow the daily ice situation at:
en.ilmatieteenlaitos.fi/ice-conditio...
I agree with you. But instead of a huge suspended bridge build a dam across the Kvarken strait and make the Bothnian Bay world's largest pumped hydro basin.
August 6, 2025 at 9:59 AM
I agree with you. But instead of a huge suspended bridge build a dam across the Kvarken strait and make the Bothnian Bay world's largest pumped hydro basin.