All Forums  Main Area  General Chatter Area  : We are experiencing active solar conditions, pos

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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by vk3pa[/i] [br]COMMENT: We are experiencing active solar conditions, possibly leading to geomagnetic disturbances[blue][i][b]. This morning an M2.5 long duration event (LDE) was recorded by GOES. [/b][/i][/blue]Its start-peak-end times are 08:11-08:37-08:58 UT and it is still decaying. A post-eruptive arcade (PEA) and dimmings near the active region are visible in EIT, and the associated CME appeared at 08:54 UT in LASCO C2. We roughly estimate the CME speed to be higher than 500 km/s. The CME itself seems to erupt to the SW, nevertheless [blue][i][b]we can expect some geomagnetic disturbance from it within 3 days. [/b][/i][/blue]The high energy proton fluxes (>10MeV and >30MeV) are enhanced from 9 UT onwards, but didn't reach the proton event threshold. [red][i][b]As the active region is turning near the west limb we have set a warning condition for proton events[/b][/i][/red]. At present geomagnetic conditions are again quiet, after the active-minor storm interval induced by the transequatorial coronal hole. The solar wind speed is still elevated at 600 km/s, but the IMF intensity remains low around 4nT with a weak and oscillating Bz component. [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.