New Aurora Alert

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Aslkahuna
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New Aurora Alert

#1 Postby Aslkahuna » Tue Nov 09, 2004 11:13 pm

The Bz has shifted south and the latest 3hr/K values are 207/8z. We are seeing a faint reddish glow to the North right now so everyone monitor the sky.

Steve
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#2 Postby WXBUFFJIM » Tue Nov 09, 2004 11:24 pm

Definitely noticed that also. Things could be favorable for auroras in the short term. The Bz shifting south does help.
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#3 Postby Tornado_Chaser2005 » Wed Nov 10, 2004 6:22 pm

Is that what they grayish glow I saw to my north was at midnight?
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#4 Postby Aslkahuna » Wed Nov 10, 2004 7:25 pm

Probably, if the aurora is too faint to trigger the color receptors in the eyes, it will appear as a grayish glow but if you photograph it it would most likely appear red. Here, the aurbo got bright enough for us to see a distinct red glow from time to time intermixed with a grayish glow. We also saw a number of auroral flashes.

Steve
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#5 Postby ohiostorm » Sat Nov 13, 2004 8:54 pm

We had a show a couple years ago and we could see that the sky was faint red. Thats about it.
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#6 Postby Aslkahuna » Sat Nov 13, 2004 11:20 pm

Aside from one earlier this year which was brief, the last big auroral show in the US was in late October through early November 2003 and then prior to that was in 2001. The thing about auroral storms associated with intense Geomagnetic activity is that you will have very strong short duration peaks of intense activity which will come and go as we get bursts of Geomagnetic activity. Outside of these peaks it will usually be a faint glow. That is why when an aurora alert goes out one has to plan on watching all night since you never know when a substorm will occur.

Steve
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