Solar Section        


August 23, 2010

CR2099 Carrington Rotation Released

Good Evening,
This Rotation showed Sunspot Groups AR11087 to AR11095. AR11092 showed several C class flares and Auroral sightings, deep into the mid US states. Obervers for this period were: Gema Araujo (GAR),Howard Eskildsen(HES), Jerry Fryer (JFR), Monty Leventhal (MLV), Tony Broxton (TBR),Susan Delaney (SDL) Erica Rix (ERI), John Rousom (JRO), R.J.Rienks (RJR). There were 162 images in white light, h-alpha, Ca-K. Also sketches of the sun in white light and H-alpha.

This can be found at : under recent observations CR2099.

You will notice that the nomenclature has been changed to take in the date, observer and how many images were sent in by that observer. All information on the images are on the images. This process still takes several hours, but less labour intensive than past archiving which took between 10-15 hours a rotation.

I hope to have the balance of the Rotations up within the next month. Thank you for your patience.


Kim Hay
Alpo Solar Coordinator & Archivist


August 14, 2010

First Solar Radiation Storm of Solar Cycle 24

Official Space Weather Advisory issued by NOAA Space Weather Prediction Center
Boulder, Colorado, USA

2010 August 14 at 05:04 p.m. MST (2010 August 14 1704 UTC)


On Saturday, August 14, 2010 a small solar flare erupted on the Sun at
about 6am EDT. Associated with this flare was a coronal mass ejection
(CME) that was partially directed towards the Earth. Also associated
with this event was a S1 or minor solar radiation storm on the “> NOAA
Space Weather Scales
The only impacts expected for a solar radiation storm of this magnitude are
minor impacts to HF radio communications in the polar regions. However, this is the first solar radiation storm of Solar Cycle 24 and the first solar radiation storm since December of 2006.

At this time, the solar radiation storm has subsided below threshold levels. However, oscillation around this threshold is possible for the next several hours. Subsequent significant activity is not expected
but there may be some level of geomagnetic storming on or around August 17th and 18th from the coronal mass ejection associated with this event. Initial observations of the coronal mass ejection direction and
velocity do not indicate a high likelihood of significant geomagnetic storming but the Space Weather Prediction Center will continue to monitor this event as it unfolds.

Data used to provide space weather services are contributed by NOAA, USAF, NASA, NSF, USGS, the International Space Environment Services and other observatories, universities, and institutions. More
information is available at SWPC’s Web site

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