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Solar Activity Report for 7/7/04

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  • David
    The most interesting thing to happen in the last couple of days was something that was pointed directly away from us. A big, full-halo CME erupted off of the
    Message 1 of 1 , Jul 7, 2004
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      The most interesting thing to happen in the last couple of days was
      something that was pointed directly away from us. A big, full-halo
      CME erupted off of the back side of the sun. While not being
      Earth-directed, it looked pretty impressive, as can be seen here :
      http://www.spaceweather.com/images2004/05jul04/cme_c3_big.gif .
      Interestingly enough, it does seem to be pointed directly at Saturn.
      It'll be interesting to see how Cassini, which is now in orbit around
      Saturn, will register the event when it impacts Saturn's
      magnetosphere. From the SOHO satellite EIT imagery, there appears to
      be a sunspot region that's close to coming into view. The EIT imager
      captures images in the extreme ultraviolet range, and sunspots radiate
      strongly in ultraviolet. I'll also be curious to see whether or not
      the sunspot that generated the back side CME holds together long
      enough to rotate into view.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 31
      SFI : 79
      A index : 4
      K index : 1

      Solar wind speed : 336.5 km/sec
      Solar wind density : 2.7 protons/cc
      Solar wind pressure : 0.5 nPa

      IMF : 3.2 nT
      IMF Orientation : 0.6 nT North

      GOES-12 Background X-ray Flux level : A3

      Conditions for the last 24 hours :
      No space weather storms were observed for the past 24 hours.

      Forecast in the next 24 hours :
      No space weather storms are expected for the next 24 hours.

      Solar activity forecast :
      Solar activity is expected to be very low.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be quiet to unsettled.

      Recent significant solar flare activity :
      None
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