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Science Forum Index » Astro - Amateur Forum » Geomagnetic "K" index keeps crying wolf...
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| Rich |
 Posted: Wed Jan 31, 2007 8:17 pm |
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| sabiajohn@aol.com |
| Posted: Thu Feb 01, 2007 10:19 am |
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On Jan 31, 7:17?pm, "Rich" <rander3...@gmail.com> wrote:
Quote: I've never seen anything as unreliable as aurora warnings, unless 99%
of all auroras are too dim to see from cities?
I did see this one some time ago.http://www.pbase.com/andersonrm/image/46915727
I find the Warnings useful. In order to determine if a display can or
will be visible from my location. One actually needs to explore more
into the current activity to determime if any display will be
appearing on your horizon. Many times I have seen and imaged Aurora
that were listed on Warning reports. Thanks to Sam Wormley postings.
Of course there were some that I missed due to weather or the event
ceased to be active by the time it is dark at my location. I do
travel to a dark site to see the aurora, they cannot be seen from my
home. The last one I viewed easily from home was the big storm of
1989(?).
Here is a brief list of web pages I examine get further information.
Auroral Activity Extrapolated from NOAA POES http://www.sec.noaa.gov/
pmap/
Current Space Weather Conditions http://www.sel.noaa.gov/
Auroral Activity Observation Network http://www.spacew.com/www/
auroras.php
Space Weather Now http://www.sec.noaa.gov/SWN/
Tips on Viewing the Aurora http://www.sec.noaa.gov/Aurora/index.html
The Aurora Page - lots of links http://www.geo.mtu.edu/weather/aurora/
Aurora Forcast (Alaska) http://www.gedds.alaska.edu/AuroraForecast/
Good luck on seeing an Active Display.
John D. Sabia |
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| Guest |
| Posted: Sat Feb 03, 2007 10:13 am |
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On Jan 31, 7:17 pm, "Rich" <rander3...@gmail.com> wrote:
Quote: I've never seen anything as unreliable as aurora warnings, unless 99%
of all auroras are too dim to see from cities?
I did see this one some time ago.http://www.pbase.com/andersonrm/image/46915727
Actually they are pretty reliable. It depends where you live. You
would see an aurora pretty much all the time with these warnings, if
you lived in northern Alaska . If you live in a light polluted
location and more normal latitude you need the K index up to 8 or 9.
If you get a warning with the k index that high then go out and look.
http://www.sec.noaa.gov/rt_plots/kp_3d.html
Alvan Clark |
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