Sept 13, 2004 Shift Report -------------------------- A large full halo CME was associated with the M4.8 long duration event which began at 23:55 UTC on September 11 and peaked nearly one hour later. Although most of ejected material was observed over the east limbs, Earth will receive an impact from at least the outer leading edge of this CME and perhaps even from a part of the core CME. Solar Activity Forecast: Solar activity is expected to be at low to moderate levels. Region 672 remains capable of producing isolated low level M-class flares, and has a slight chance of producing a major event. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on 13 September through much of 14 September. Late on 14 September a shock passage from the long duration M4 flare mentioned in IA is anticipated. Major to severe storming may likely occur following the onset of the shock and dominate the first half of the period on 15 September. Further, a recurrent high speed coronal hole stream is also expected to become geoeffective on 15 September and continue into 16 September. Sept 14, 2004 Shift Report -------------------------- - SCS107 ran at 257:2138. Both P4GM and E1300 channels exceeded the RADMON limits at about the same time - Nominal replan at this time is plan B: pick up loads 50 ksec after radiation exit to include XRF040825 and the Ricker TOO. A maneuver-only load is under consideration because of the impending momentum limit violation at 259:2300. - ACIS is planning a CAP to do a long CTI measurement on the tail end of this perigee until science restarts - GOES hard proton rates are currently at the value equivalent to the P4GM RADMON trip rate and declining slowly - ACE rates are near the SOT alert values and declining slowly as well: ACE 130-214 keV proton fluences (p/cm2-sr-MeV) and Costello predicted activity index OBSERVED SOT alert ------------ ------------- 2-hour Fluence: 3.2e+08 3.6E+8 Kp: 3.3 6.0 - Solar Activity Forecast: Solar activity is expected to be low to moderate. Isolated M-class flares from Region 672 are possible. - Geophysical Activity Forecast: The geomagnetic field is expected to be at minor to major storming levels on 14 September, due to the effects of a CME arrival. Conditions should subside to quiet to active levels on 15 and 16 of September, although isolated minor storm conditions are possible on those days from the effects of a geoeffective coronal hole.