Author Topic: Shockwave from volcano  (Read 1376 times)

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Offline davidg_nz

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Shockwave from volcano
« on: January 15, 2022, 04:53:36 AM »
Don't know if this really belongs here as its not exactly weather but...



A bit over two hours after the volcano erupted in Tonga, around 1986km from Port Charles according to Google Maps. I never thought something like this would be picked up by a personal weather station before.

Edit:
Zoomed view of just the pressure surge:


News is saying quite a few people even here in New Zealand over 2000km away heard the eruption (or its shockwave) as well.
« Last Edit: January 15, 2022, 06:16:30 PM by davidg_nz »
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Offline WA7FWF

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Re: Shockwave from volcano
« Reply #1 on: January 15, 2022, 12:21:24 PM »
Not as dramatic but I also saw a blip in Northern Idaho.
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« Last Edit: January 15, 2022, 04:13:55 PM by WA7FWF »

Offline hmderek

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Re: Shockwave from volcano
« Reply #2 on: January 15, 2022, 01:37:10 PM »
Waiting to see if Europe gets anything.
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Offline Jim_S

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Re: Shockwave from volcano
« Reply #3 on: January 15, 2022, 01:59:38 PM »
Thanks for starting the thread!

Not as dramatic but I also saw a blip in Northern Idaho.
The same here in eastern Washington. Scanning WU you can see the blip and compare times with other stations. Very interesting.

Offline chief-david

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Re: Shockwave from volcano
« Reply #4 on: January 15, 2022, 02:09:55 PM »
holy cow

8am central



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Offline hmderek

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Re: Shockwave from volcano
« Reply #5 on: January 15, 2022, 02:29:19 PM »
Netherlands!

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Offline saratogaWX

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Re: Shockwave from volcano
« Reply #6 on: January 15, 2022, 02:31:04 PM »
 :shock: My weather station (Saratoga, CA, USA) recorded the shock wave from the #Tongaeruption this morning.  The eruption is 5,313 miles (8550 km) away.
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Offline chief-david

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Re: Shockwave from volcano
« Reply #7 on: January 15, 2022, 02:45:25 PM »
will have to talk about this in class Monday



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Offline NK7Z

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Re: Shockwave from volcano
« Reply #8 on: January 15, 2022, 02:53:20 PM »
I am fairly sure I also captured the event in Oregon...  See attached.

Offline NK7Z

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Re: Shockwave from volcano
« Reply #9 on: January 15, 2022, 02:53:58 PM »
Blast Event is NOT the large bump, it is the yellow circle centered on the time.

Offline hmderek

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Re: Shockwave from volcano
« Reply #10 on: January 15, 2022, 02:58:17 PM »
I was hoping to be able to detect a small effect, but this looks a lot like the graphs I saw this morning from locations much much closer. 3 hPa difference between leading edge of the blast and the back!

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Offline CW2274

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Re: Shockwave from volcano
« Reply #11 on: January 15, 2022, 03:55:07 PM »
Can't figure out how to take a screen shot of my graph, but my pressure went form 30.177" at 1140Z to 30.221" at 1220Z then dropped back down. Very reminiscent of a pressure wave associated with a T-storm outflow.  8-)

Offline mcrossley

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Re: Shockwave from volcano
« Reply #12 on: January 15, 2022, 04:26:14 PM »
Got this up in the Cheshire area of the UK at 19:00 UTC...

I make it distance of around 10,000 miles, or 16,000 km.

EDIT: Updated to include the secondary event just before 02:00 UTC on the 16/01/22

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« Last Edit: January 16, 2022, 08:32:05 AM by mcrossley »
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Offline worachj

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Re: Shockwave from volcano
« Reply #13 on: January 15, 2022, 05:59:21 PM »
Tonga volcanic eruption took almost 10 hours to affected pressure in Minnesota when it erupted around 10PM CT on 1/14 and reached MSP at 8AM on 1/15.

https://twitter.com/NWSTwinCities/status/1482438444013916162


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Offline Storm017

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Re: Shockwave from volcano
« Reply #14 on: January 15, 2022, 07:04:52 PM »
I believe capture the pressure blip here on the east coast.

Offline Storm017

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Re: Shockwave from volcano
« Reply #15 on: January 15, 2022, 11:45:08 PM »

Offline Brutha

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Re: Shockwave from volcano
« Reply #16 on: January 16, 2022, 03:56:41 AM »
Got this in the Western Isles of Scotland last night:

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Two waves in fact - the first the one coming directly, the second presumably the one going the long way round!

Offline hmderek

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Re: Shockwave from volcano
« Reply #17 on: January 16, 2022, 04:15:21 AM »
Second shockwave just around 2.30 UTC+1 here.

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Offline ocala

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Re: Shockwave from volcano
« Reply #18 on: January 16, 2022, 06:42:14 AM »
Slight bump here in central Florida.
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Offline jimi

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Re: Shockwave from volcano
« Reply #19 on: January 16, 2022, 07:11:57 AM »
Second shockwave just around 2.30 UTC+1 here.

Looks like mine caught both as well

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Offline ShuttleAU

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Re: Shockwave from volcano
« Reply #20 on: January 16, 2022, 07:11:58 AM »
Hi

Picked up in Sydney Australia.  Two screenshots from Weather Underground from two weather stations about 25 km apart. The timing is the same and matches the local weather bureau data.

« Last Edit: January 16, 2022, 07:14:57 AM by ShuttleAU »

Offline Dador

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Re: Shockwave from volcano
« Reply #21 on: January 16, 2022, 08:46:08 AM »
I watched it live on the computer. I was surprised where these quick changes in pressure came from, because it was freezing outside and almost no wind.

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« Last Edit: January 16, 2022, 08:49:02 AM by Dador »
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Offline Storm017

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Re: Shockwave from volcano
« Reply #22 on: January 16, 2022, 09:49:11 AM »
I believe capture the possibly a second pressure blip here on the east coast.  Weather was clear and temp was -3.0 f

Offline PaulMy

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Re: Shockwave from volcano
« Reply #23 on: January 16, 2022, 12:11:22 PM »
My WL.com data seems to show two separate times about 14 hours apart.


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Offline hofpwx

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Re: Shockwave from volcano
« Reply #24 on: January 16, 2022, 12:29:12 PM »
Four stations in the Boulder, Colorado area. The NREL campus to the south, the NCAR Mesa and Foothill Labs, and my station, at about 6:30 MST.