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C-Type CME Detected by STEREO A, STEREO B, SOHO

NOAA's Space Weather Prediction Center (http://swpc.noaa.gov) is the United States Government official source for space weather forecasts.
This "Experimental Research Information" consists of preliminary NASA research products and should be interpreted and used accordingly.

Subject: Space Weather Notification - CME

## NASA Goddard Space Flight Center, Space Weather Research Center ( SWRC )
## Message Type: Space Weather Notification - CME
##
## Message Issue Date: 2013-09-04T19:14:00Z
## Message ID: 20130904-AL-001

##Summary:

C-type CME detected by STEREO-A COR2/STEREO-B COR2/SOHO LASCO C3.

Start time of the event: 2013-09-04T13:09:35Z.

Estimated speed: ~850 km/s.

Estimated opening half-angle: 21 deg.

Direction (lon./lat.): -148/17 in Heliocentric Earth Ecliptic coordinates.

Activity ID: 2013-09-04T13:09:35-CME-001.

Based on preliminary heliospheric modeling carried out at NASA GSFC Space Weather Research Center,
it is estimated that the CME may impact the Messenger and STEREO B spacecrafts. Simulations indicate
that the leading edge of the CME will reach Messenger at about 2013-09-05T11:52 and
STEREO B at about 2013-09-07T12:48 (plus minus 7 hours).

Links to the movies of the modeled event:

http://iswa.gsfc.nasa.gov/downloads/20130904_170000_anim.tim-den.gif
http://iswa.gsfc.nasa.gov/downloads/20130904_170000_anim.tim-vel.gif
http://iswa.gsfc.nasa.gov/downloads/20130904_170000_anim.tim-den-Stereo_...
http://iswa.gsfc.nasa.gov/downloads/20130904_170000_anim.tim-vel-Stereo_...
http://iswa.gsfc.nasa.gov/downloads/20130904_170000_anim.tim-den-Stereo_...
http://iswa.gsfc.nasa.gov/downloads/20130904_170000_anim.tim-vel-Stereo_...

## Notes:

SCORE CME typification system:
S-type: CMEs with speeds less than 500 km/s
C-type: Common 500-999 km/s
O-type: Occasional 1000-1999 km/s
R-type: Rare 2000-2999 km/s
ER-type: Extremely Rare >3000 km/s
http://swrc.gsfc.nasa.gov/main/score

NASA GSFC Space Weather Research Center ( SWRC, http://swrc.gsfc.nasa.gov )
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NOAA's Space Weather Prediction Center (http://swpc.noaa.gov) is the United
States Government official source for space weather forecasts.
This "Experimental Research Information" consists of preliminary NASA
research products and should be interpreted and used accordingly.