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Aurora Alert


baltosquid
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After some showers, it has gotten 99% clear skies here.  Let's hope this holds for the next 6 hours.

Looking at satellite it looks like more clouds will be coming, but think even DC should clear up for at least a bit. Would be a nice surprise, especially if the timing mentioned earlier is right.
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18 minutes ago, SomeguyfromTakomaPark said:

Looks like tomorrow is a better chance 

I saw the they are predicting midday tomorrow UTC, which is 7am tomorrow morning. So 3 am - 5 am might be a good time to look.

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2 minutes ago, WxUSAF said:

I’m pretty damn tired. Can someone guarantee me a repeat but with clear skies?

Sure. If it fails, I'll owe you a refund on all the money you paid me.

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2 minutes ago, SomeguyfromTakomaPark said:

What is bz and where do u track it 

From Google:
 

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The interplanetary magnetic field is a vector quantity with a three axis component, two of which (Bx and By) are orientated parallel to the ecliptic. The Bx and By components are not important for auroral activity and are therefor not featured on our website. The third component, the Bz value is perpendicular to the ecliptic and is created by waves and other disturbances in the solar wind.

The north-south direction of the interplanetary magnetic field (Bz) is the most important ingredient for auroral activity. When the north-south direction (Bz) of the the interplanetary magnetic field is orientated southward, it will connect with Earth’s magnetosphere which points northward. 

You can see bZ here. Right now it's fallen to -5... IIRC it was -50-ish last night.

https://www.spaceweatherlive.com/en/auroral-activity.html

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image.thumb.png.8ae5cc3a72b9de2a5f216c0cf98171dc.png

Forecast picking back up. Mostly cloudy here, can actually see the moon and some stars through a patch of sky but not placed where I can see the north horizon. Hopefully continues to strengthen.

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Tonight might end up more of a long-exposure, horizon based photography thing in low-light pollution areas - CME does seem to have had an impact based on the auroral oval forecast (and it got a tad stronger last update as well) but it doesn't look close to last night. Hopefully tomorrow is better, seems like it will at least provide a better chance of clear (enough) skies!!

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