Issued: 2011 09 27 0631 BST #------------------------------------------------# # PROPAGATION WARNING # # C.C.R.M. Ophain # # 50° 39' 30\" N - 004° 29' 00\" E # # # # POSSIBLE HARMFULL INTERFERENCE DUE TO # # SPECIAL EVENT # #------------------------------------------------# CCRM Propagation Bulletin #119 OBSERVATION PERIOD : 2011 09 27 0631 BST INTERFERENCE RISK : EARLY AUTUMN GEOMAGNETIC STORM From : NOAA Space Weather Prediction Center Boulder, Colorado, USA SPACE WEATHER ADVISORY BULLETIN #11- 4 2011 September 26 at 03:00 p.m. MDT (2011 September 26 2100 UTC) A Coronal Mass Ejection (CME) that erupted from NOAA Active Region 1302 on Saturday September 24 in conjunction with an M7 strength solar flare, arrived this morning at 1237 UT (8:37am Eastern Time). It has kicked off moderate (G2) geomagnetic storms for low latitudes, but high latitudes are seeing severe (G4) levels of activity. Aurora watchers in Asia and Europe are most favorably positioned for this event, though it may persist long enough for viewers in North America. The bulk of the CME missed the Earth, meaning the storm intensity and duration are less than what they would have been in the case of a direct hit. Region 1302 remains capable of producing more activity and will be in a favorable position for that activity to have impacts on Earth for the next 3-5 days. 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 http://swpc.noaa.gov REMARKS : Operator : Serge MAROTTE Snr. Radio-operator / technical staff SEE OUR PROGPAGATION GRAPHS : http://www.ccrmradio.be/propaplot.html AND PROPAGATION MAP : http://www.ccrmradio.be/propamap.html Contact us for specific information. #------------------------------------------------------------------------# # Centre de Contrôle des Radiocommunications des Services Mobiles # # Centrum voor Controle der Radioverbindingen van de Mobiele Diensten # # a.s.b.l. v.z.w. # # Rue des Belles Pierres, 5 # # B-1421 OPHAIN Belgium # # Fax : 32 (0) 2 384 26 59 # # Tel.: 32 (0) 2 384 40 94 # # ccrm@ccrmradio.be # # # # Please do not reply directly to this message, but send comments # # and suggestions to 'propagation@ccrmradio.be'. # # To subscribe or unsubscribe, send a mail to 'propagation@ccrmradio.be' # # For more information, see http://www.ccrmradio.be # #------------------------------------------------------------------------#