May produce aurora, electrical & radio interruptions.
http://www.spaceweather.com/
> Date: Wed, 10 Sep 2014 15:30:41 -0800
> From: cdeehr@gi.alaska.edu
> To: gse-aa@gi.alaska.edu
> Subject: Auroral Alert
> Content-Transfer-Encoding: 7bit
> Status: R
>
> The effects of a solar event facing roughly toward Earth, on the 9th
> of September, should reach Earth around midnight on September 11th UT.
> Another, larger event, also facing Earth, occurred on September
> 10th, and it should have higher velocity. The effects of the latter
> event may therefore reach Earth at the same time. Even if it is
> later, disturbances should be large and last long enough to result in
> increased auroral activity for the next three to five days.
>
> The result is that aurora watchers should monitor the Current Auroral
> Activity on the forecast website or watch
> http://www.swpc.noaa.gov/ovation/ for the next five days. We will
> post more accurate predictions or descriptions of conditions when the
> results of more solar observations become available.
>
> Note that we do not expect the aurora to exceed index = 5 or 6 on our
> scale because the magnetosphere has been relatively quiet. However,
> conditions such as these could lead to auroras observed from the
> middle or southern states.
http://www.spaceweather.com/
> Date: Wed, 10 Sep 2014 15:30:41 -0800
> From: cdeehr@gi.alaska.edu
> To: gse-aa@gi.alaska.edu
> Subject: Auroral Alert
> Content-Transfer-Encoding: 7bit
> Status: R
>
> The effects of a solar event facing roughly toward Earth, on the 9th
> of September, should reach Earth around midnight on September 11th UT.
> Another, larger event, also facing Earth, occurred on September
> 10th, and it should have higher velocity. The effects of the latter
> event may therefore reach Earth at the same time. Even if it is
> later, disturbances should be large and last long enough to result in
> increased auroral activity for the next three to five days.
>
> The result is that aurora watchers should monitor the Current Auroral
> Activity on the forecast website or watch
> http://www.swpc.noaa.gov/ovation/ for the next five days. We will
> post more accurate predictions or descriptions of conditions when the
> results of more solar observations become available.
>
> Note that we do not expect the aurora to exceed index = 5 or 6 on our
> scale because the magnetosphere has been relatively quiet. However,
> conditions such as these could lead to auroras observed from the
> middle or southern states.
