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Solar Activity Report for 8/10/04

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  • David
    The best way to describe conditions of the last couple of days would be unsettled. The solar wind speed is up into the high 500 s due to the effects of a
    Message 1 of 1 , Aug 10 9:29 PM
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      The best way to describe conditions of the last couple of days would
      be unsettled. The solar wind speed is up into the high 500's due to
      the effects of a somewhat diffuse coronal hole. However, no
      geomagnetic storm conditions have been observed. Of perhaps more
      interest is old sunspot region 649, which is now in full view. When
      it first appeared a few days ago, it looked to have lost much of it's
      former intensity. While it hasn't produced anything significant yet,
      it is growing in size, and is now naked-eye visible. BTW, region 649
      has been redesignated as 656. Sunspot regions always get a new number
      for every appearance they make. Region 656 now appears to have the
      magnetic complexity for generating a significant flare. If you
      remember, sunspot region 652 was close on 649's heels last time
      around, and region 652 was the source of numerous M-class flares.
      Region 652 should be coming into view soon, and it will be very
      interesting to see what shape it is in.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 93
      SFI : 121
      A index : 18
      K index : 3

      Solar wind speed : 565.6 km/sec
      Solar wind density : 1.7 protons/cc
      Solar wind pressure : 0.9 nPa

      IMF : 7.0 nT
      IMF Orientation : 2.3 nT South'

      GOES-12 Background X-ray Flux level : B3

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

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

      Solar activity forecast :
      Solar activity is expected to be mostly low, but there is a fair
      chance for an isolated M-class flare from Region 656. There may be an
      increase in background and activity levels on 12 August with the
      return of old Region 652 (N08, L=348) which produced numerous M-class
      events on its previous disk transit.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be mostly unsettled with
      occasional active periods for the next three days (11-13 August).

      Recent significant solar flare activity :
      None
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