Okay, it’s called Anak Krakatau — Child of Krakatoa — now, but I suspect it is still “Krakatoa” to most folks outside Indonesia who don’t happen to be volcanophiles.
Update on name: Per the Royal Society’s 19th-century report on the 1883 eruption, this volcano’s name is related to a local word for “crab,” which it did resemble.
May 20, 2022, 12:17 p.m., Pacific: Darwin VAAC issued the last advisory today.
Since clouds obscure the volcano, I’ll keep this pinned for a little while longer, but, hopefully, this episode has ended. 🤞
12:29 p.m.: So I get on Twitter after posting that update and find this. That “crab” out in the Sunda Strait still needs watching!
#volcan #volcano #Krakatau Fort signal thermique associé à dégazage intense toujours présent à proximité du nouveau cône/Strong thermal emission with strong gaz release still present near the new cone; via @sentinel_hub @esa @CopernicusEU pic.twitter.com/16LRYkyKMp
— CultureVolcan (@CultureVolcan) May 20, 2022
May 17, 2022, 9:39 a.m., Pacific: There’s no change apparently. Darwin VAAC issued another advisory. Their remarks:
: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
CLOUD IN AREA. WEAK VA PLUME LAST OBS 17/0930Z EXTENDING N
OF VOLCANO. WEBCAM SHOWS STEAM EMISSION ONGOING. VA HEIGHT
AND FCST MOV BASED ON HIMAWARI-8 IMAGERY AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20220517/1915Z=
I’ll post new advisories only if there is any change. Unfortunately, the CCTV images I can find online are almost a week old. Does anyone know of more frequently updated webcams?
May 15, 2022, 12:17 p.m., Pacific: An update yesterday, from Volcano Discovery — a tremendous resource.
#Krakatau #volcano (Sunda Strait, Indonesia): lava flow continues to feed new delta – The effusive eruption at the volcano resumes at moderate levels.
Today's cloud-free satellite observation confirmed the continuous new lava delt…https://t.co/6DtUj0hUGN
— VolcanoDiscovery (@volcanodiscover) May 14, 2022
Darwin VAAC still has the advisory listed, but no new ones. No VONA found on the MAGMA Indonesia page, and the Anak Krakatau Twitter account (whoever is running that) doesn’t mention anything new (they did forward this tweet).
Given that relaxed attitude locally, plus the fact that the ongoing activity is effusive (red lava) rather than explosive, my concern is less (whatever that’s worth from a layperson 😄 ).
Will keep this pinned until they lower the alert level, though. Krakatau is tricky because it can’t easily be monitored, being mostly underwater.
May 14, 2022 9:12 a.m., Pacific: Darwin VAAC has issued an advisory, but I’m still looking for information from local official sources.
If I understand aircraft terminology, it wasn’t a very big emission. FL080 is 8,000 feet, right? And it was mostly steam.
Wonder if it was a one-off shot or if Anak Krakatau is feeling restless again.
May 13, 2022, 1:18 p.m., Pacific: Things are still quiet, alert level still elevated.
— kosmi (@kosmi64833127) May 12, 2022
May 4, 2022, 10:50 a.m., Pacific: Nothing new, but here is a neat satellite view and update in English:
#Krakatau #volcano (Sunda Strait, Indonesia): lava continues to enter sea, tongues of lava form glowing horseshoe-like shape – The latest satellite image from 2 May shows the advancing lava flow into the newly existing sea entry.
— VolcanoDiscovery (@volcanodiscover) May 4, 2022
Hope it stays at this level!
April 30, 2022, 9:13 a.m., Pacific: Still quiet, still at elevated alert.
Spectacular footage of Anak Krakatau (the new central land built since the much larger caldera, mostly underwater as shown here, blew in 1883).
Another angle of the image of Mount Anak Krakatau as of April 28, 2022.
It can be seen that the crater holes that were open after the 2018 eruption and tsunami were closed and the growth of the mountain body was very significant.
Sudut lain gambar Gunung Anak Krakatau per tanggal 28 April 2022.
Terlihat lobang kawah yang terbuka paska erupsi dan tsunami 2018 sudah tertutup dan pertumbuhan badan gunung sangat signifikan. pic.twitter.com/MyiFffsxBE
— Abdul Muhari (@abdulmuhari) April 28, 2022
April 29, 2022 12:12 p.m., Pacific: A new cone!
My new cone! Also, Boris is a trusted source of info. https://t.co/3TwaHVlqD0
— Anak Krakatau (@Krakatau_1883) April 28, 2022
Things have been quiet, fortunately. At the moment, there only appears to be a hint of incandescence from the shore.
Per satellite view on the 27th:
#volcan #volcano #Krakatau Le nouveau champ de coulée encore à haute température aujourd'hui; l'île de Panjang (à l'est) couverte de cendres/The new lava flow field is still hot today; the Panjang island (east) covered by ash; via @sentinel_hub @esa @CopernicusEU pic.twitter.com/EzrUUtgmi8
— CultureVolcan (@CultureVolcan) April 27, 2022
April 27, 2022, 7:06 a.m., Pacific: Per the latest VONA (scroll down):
Eruption with volcanic ash cloud at 05.00 UTC (12.00 local). Eruption and ash emission is continuing. Best estimate of ash-cloud top is around 10102 FT (3157 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer. Visuals directly from the cctv were observed eruptions with the color of the thick white-grey-black eruption smoke 3000m from the top of the volcano, the wind direction slowly to the south-southwest.
It’s night there now, and the cam view appears quite dark, though there is a hint of clouds. Whether these are meteorological or volcanic is impossible to tell (though you would think some incandescence would show if it was ash).
Per Darwin VAAC at 1115 UTC, “VA NOT IDENTIFIABLE ON LATEST SAT IMAGERY DUE TO MET CLOUD. HOWEVER, ERUPTION IS EXPECTED TO BE ONGOING.”
It is not a massive eruption, though. Authorities and Anak Krakatau, Twitter are more focused on potential for cone collapse and tsunami.
Here’s the ash advisory tweet from AK Twitter:
— INFOMITIGASI™ (@infomitigasi) April 27, 2022
Anak Krakatau is a very active volcano, and I’ve been watching it but was spurred to do this post after seeing just how much deformation the volcano showed on this April 14th image, tweeted today:
— INFOMITIGASI™ (@infomitigasi) April 25, 2022
I am strictly a layperson, so take it FWIW, but that eruptive column looks like there’s some power behind it. And this is Krakatoa.
So let’s watch this and see what happens.
Webcam. There is no live stream at the moment, but scroll down for cam images.
Local monitoring updates (Indonesian).
Oystein Lund-Andersen, Twitter.