Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Weather Prediction Center and the U.S. Air Force.
Updated 2010 Aug 24 2201 UTC
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 236 Issued at 2200Z on 24 Aug 2010
IA. Analysis of Solar Active Regions and Activity from 23/2100Z
to 24/2100Z: Solar activity has been at very low levels for the past
24 hours. No flares were observed during the period. New Region 1101
(N12E79) was numbered today and is magnetically classified as an
alpha group.
IB. Solar Activity Forecast: Solar activity is expected to be at
very low levels for the next three days (25-27 August).
IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z:
The geomagnetic field has been at unsettled to active levels for the
past 24 hours. The increased activity was associated with a
recurrent coronal hole high speed stream (CH HSS) moving into
geoeffective position. ACE solar wind readings indicated an enhanced
interplanetary field (IMF) intensity (peak 22 nT at 2241Z) combined
with intermittent periods of southward IMF Bz (maximum deflection
-14 nT at 0104Z) with an increase in velocities from 358 km/s to 709
km/s.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be at unsettled to active levels on day one (25 August),
at mostly unsettled levels on day two (26 August), and at quiet to
unsettled levels on day three (27 August) as the effects of the CH
HSS subside.
Top News of the Day: Aug 24, 2010: Last night saw the expected arrival of a co-rotating interaction region (abbreviated CIR) and the subsequent high speed solar wind. The wind speeds have exceeded 700 km/s (or 1.5 million miles/hour), which is approaching the fastest speeds seen for these types of events. The high winds are coming from a large coronal hole in the northern hemisphere of the Sun, which can be seen as a dark patch in the SXI image below. These high speed winds should continue for at least 2 more days, buffeting the Earth and giving us some chances of minor geomagnetic storming.
Solar Storm in process.
Not associated with any CME or solar flare; currently there is only one sunspot on the surface and it is just rotating into view.
It could be from a coronal hole and the resulting solar wind.
Here are the reports:
http://www.solarcycle24.com/
(fair use applies)
http://www.swpc.noaa.gov/
(fair use applies)
For those who follow GRB, and are wondering if there is a connection to this solar storm, there was one yesterday.
GRB 20100823A
Mission: Swift
2010/08/23 17:25:35 UTC
Right ascension 01:22:48
Declination 05:50:31
Galactic Lon. 137.04°
Galactic Lat. -56.17°
Constellation of Pisces
See these links for more info on the GRB:
http://grblog.org/grblog.php?get=GCN11136
http://grblog.org/grblog.php?get=GCN11135
The charts:
From: http://www.n3kl.org/sun/noaa.html
(fair use applies)
In this order: Electron Flux, Kpindex, Magnometer and Proton Flux (nothing happening there)
A somewhat radical storm, Thanks for the graphic HD, can you copy and post this graphic. http://www.swpc.noaa.gov/rt_plots/Electron.gif
I am brain dead tonight.
IB. Solar Activity Forecast: Solar activity is expected to be at
very low levels for the next three days (25-27 August).
IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z:
The geomagnetic field has been at unsettled to active levels for the
past 24 hours. The increased activity was associated with a
recurrent coronal hole high speed stream (CH HSS) moving into
geoeffective position. ACE solar wind readings indicated an enhanced
interplanetary field (IMF) intensity (peak 22 nT at 2241Z) combined
with intermittent periods of southward IMF Bz (maximum deflection
-14 nT at 0104Z) with an increase in velocities from 358 km/s to 709
km/s.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be at unsettled to active levels on day one (25 August),
at mostly unsettled levels on day two (26 August), and at quiet to
unsettled levels on day three (27 August) as the effects of the CH
HSS subside.
Space Weather News for Sept. 9, 2010
http://spaceweather.com
SPECTACULAR ERUPTION: Just as sunspot 1105 was turning away from Earth on Sept 8th, the active region unleashed a spectacular eruption of plasma and extreme ultraviolet radiation. Earth was not in the line of fire--this time. Must-see movies from the Solar Dynamics Observatory and other spacecraft are highlighted on today's edition of http://spaceweather.com.
Space Weather News for Sept. 12, 2010
http://spaceweather.com
ARCTIC AURORA WATCH: A magnetic filament on the sun erupted during the late hours of Sept. 10th, hurling a bright coronal mass ejection (CME) into space. The CME is not heading directly for Earth, but the cloud's southern flank could deliver a glancing blow to our planet's magnetic field on Sept. 12th or (more likely) Sept. 13th. People in Alaska, Canada, Iceland, Greenland and Scandinavia should be alert for Northern Lights in the nights ahead. Check http://spaceweather.com for updates and movies of the eruption that prompted this alert.

Some updates I found in my email inbox.
Back in March they were talking about a filament on the sun and saying how rare it was and warning of hydra flares as a result.
There were a few threads about it, I can only find one right now in search, but you can refresh your memory of how rare they thought they were if you read the first few posts:
http://www.timebomb2000.com/vb/showthread.php?t=356516
Here we are in September and it seems like a few times a month we get notice of another filament, and this is the 2nd time since that story first ran that one erupted. I guess it's now the norm
HD
GLOBAL ERUPTION: On Sept. 22nd between 0230 UT and 0600 UT, the northern hemisphere of the sun erupted in a tumult of activity. At least two dark magnetic filaments became unstable and lifted off the stellar surface, a B8-class solar flare flashed from sunspot 1109, and a bright coronal mass ejection billowed into space (SOHO movie
http://www.spaceweather.com/swpod2010/22sep10/cme.gif?PHPSESSID=eamfqibesumnrqvum1e5k4kp01 ). Click on the image to play a time-lapse movie from Solar Dynamics Observatory--and pay attention to the circled regions:
![]()
http://www.spaceweather.com/swpod20...ion3.gif?PHPSESSID=eamfqibesumnrqvum1e5k4kp01
The eruption is reminiscent of the global event of August 1st, which hurled a CME toward Earth and sparked Northern Lights in the United States as far south as Iowa. This time, however, the CME will miss Earth (unless it veers off course) so there should be no resulting geostorms.
Did you watch the live feed and see the huge tsunami go across the face of the sun? It was spectacular!!!
K-
Yes it was. And once again, solar events that were once said to be 'extremely rare' are happening once a month.
HD
Oh AND did you see today's spaceweather announcement that though they once thought CME"S and Solar storms to travel in ONLY a straight line is NOW a fallicy???
K-
Solar Storms can Change Directions, Surprising Forecasters
Sept. 21, 2010: Solar storms don't always travel in a straight line. But once they start heading in our direction, they can accelerate rapidly, gathering steam for a harder hit on Earth's magnetic field.
So say researchers who have been using data from NASA's twin STEREO spacecraft to unravel the 3D structure of solar storms. Their findings are presented in today's issue of Nature Communications.
(snip)
As if we didn’t have enough to worry about, now we add stealthy stalking solar storms.
That ornery rascal, keeps sneaking back and forth from behind the sun.![]()

Tom you're right on top of this news
SUMXM5
Serial Number: 73
Issue Time: 2010 Nov 06 1554 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2010 Nov 06 1527 UTC
Maximum Time: 2010 Nov 06 1536 UTC
End Time: 2010 Nov 06 1544 UTC
X-ray Class: M5.4
Optical Class: sf
Location: S18E47
NOAA Scale: R2 – Moderate
Space Weather Message Code: SUM10R
Serial Number: 482
Issue Time: 2010 Nov 06 1623 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2010 Nov 06 1533 UTC
Maximum Time: 2010 Nov 06 1534 UTC
End Time: 2010 Nov 06 1535 UTC
Duration: 2 minutes
Peak Flux: 100 sfu
Latest Penticton Noon Flux: 83 sfu
It'll be interesting to see how long until it affects the Geomagnetic.
Is this considered a big flare?


Oh fark that is very different that what I posted at 5:30ish pm central time!!! I read that the cme hit sometime around 8 central standard time.They were predicting the hit about 4:30, however it seems to be a little later then that. It first peaked about 9:30 PST and there will likelly be updaates.
Space Weather Message Code: ALTK04
Serial Number: 1496
Issue Time: 2011 Feb 18 0528 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2011 Feb 18 0526 UTC
Synoptic Period: 0300-0600 UTC
Station: Boulder
Active Warning: Yes