Impact from Nov 28 CME

[MinYoongi]

3 minutes ago, Philalethes said:

Yeah, I concur, definitely looks like we're in the flux rope now, since around 20:00.

Looks like that to me too (WSE), and by the lack of any significant Bx I'm guessing we're hitting the middle of it.

how long will it be negative then? (since you said middle)  whats BX?

[Philalethes]

3 minutes ago, MinYoongi said:

how long will it be negative then? (since you said middle)  whats BX?

Depends if those assumptions are in fact true or not, but could be several hours; HP is already up again, and we're still at G1, so I'm guessing we'll see more aurorae if this keeps up.

Bx is the component of the interplanetary magnetic field on the x-axis, like Bz is on the z-axis; where positive Bz is "up" and negative Bz is "down", positive Bx is towards Sol and negative Bx away from it. Since there's not much of any such component, that should be an indication that we're closer to the middle of the rope rather than the edges (when looking at it as a cross-section). Could be wrong, but from thinking about it that's what it seems like has to be the case to me.

[Isatsuki San]

Well, while the blow will be that calm, I will be calm:D

[Malisha Reuvekamp]

Well, I tried several times tonight, but clouds refused to go away.

It seems to be booming now, probably even with the naked eye.

Not for me this time.🙈

[mozy]

Just now, Malisha Reuvekamp said:

Well, I tried several times tonight, but clouds refused to go away.

It seems to be booming now, probably even with the naked eye.

Not for me this time.🙈

Same here as usual 😕

[Jesterface23]

Bx maybe has a slightly rotation currently, By has a rotation, and Bz is rotating south. Though if there is going to be any sort of big switch up it will probably be over the next few hours.

Edited December 1, 2023 by Jesterface23

[cgrant26]

Amazingly we have mostly clear skies for a change. Just waiting for the "bulge" to rotate into our longitude.

[LunarLights58]

Tonight is the night,
the conditions are right,
it will be such a sight
to see the Northern Lights

[Malisha Reuvekamp]

2 minuten geleden, cgrant26 zei:

Amazingly we have mostly clear skies for a change. Just waiting for the "bulge" to rotate into our longitude.

🤞 good luck!

[cheebee]

3 minutes ago, LunarLights58 said:

Tonight is the night,
the conditions are right,
it will be such a sight
to see the Northern Lights

haha, id have just clicked the haha emoji but i ran out of emojis

[Bobofango]

[hamateur 1953]

Bravo!!   Outta likes again doggone it!! 

[LunarLights58]

Darn it, the clouds!

[Landon Moeller]

The IMF has slowly rotated from a southwest vector to a west vector. Let’s see what happens next…

[bugz000]

still poppin' in minnesota

[MN Skywatch]

I think that's probably it for tonight here. Had some nice pillars this evening though

[cgrant26]

Damn, I went out and couldn't see them. Maybe too much light pollution. I'm near Hugo.

[MN Skywatch]

5 minutes ago, cgrant26 said:

Damn, I went out and couldn't see them. Maybe too much light pollution. I'm near Hugo.

They were out this evening. BZ is going positive now. So the chances are are gonna be slim

[bugz000]

21 minutes ago, cgrant26 said:

Damn, I went out and couldn't see them. Maybe too much light pollution. I'm near Hugo.

i'm in that area too  you need a camera, its very faint to the eye

edit: my photos are 15-30 second exposures at ISO ranging from 120->800 on a nikon D2X
edit edit: aurora by the naked eye sometimes looks like light pollution itself until you get a camera on it for longer exposure then the color comes out  give it a go!

Edited December 2, 2023 by bugz000

[Landon Moeller]

Was honestly not expecting the Bz to go north so soon. Doesn’t seem like a WSE flux rope. Only the Bz rotated while By stayed as west as possible. Anyone know what to consider this? SWN?

[signsincerelyme]

Try using a higher iso and shorter exposure.  

[bugz000]

looks like the party is over, that was fun!

4 hours ago, signsincerelyme said:

Try using a higher iso and shorter exposure.  

it's an 18 year old camera, that is absolutely not advisable lol...

 

[Philalethes]

5 hours ago, Landon Moeller said:

Was honestly not expecting the Bz to go north so soon. Doesn’t seem like a WSE flux rope. Only the Bz rotated while By stayed as west as possible. Anyone know what to consider this? SWN?

Same, seems like a different configuration after all. From around 00:00 it does indeed look to have behaved like an SWN, weird that it seemed to be rotating the other way around first. I guess there are a lot of complicating factors that aren't easy to account for, e.g. rotation of the rope itself and disturbances from other activity.

[NEAurora]

Now that the event is wrapping up, I put together a quick time-series overview of the event showing elevated protons throughout, both CME impacts, two clear and different impacts both at STEREO and L1, plus each respective response by GOES shortly after L1.  Looks like STEREO measured a much shorter period of +bz during the afternoon of the 12/01 than L1.  Pretty good storm, and overall an interesting event with multiple CME impacts, but maybe not the blockbuster we were all hoping for.

 

[Jeff Mitchell]

NEAurora:

Very nice summary graphic. Data-rich.