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Solar Activity Report for 9/27/05

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  • David
    There aren t any decent coronal holes in a squarely Earth-pointing position, but there are a couple that are sending us a brush of solar wind. The solar wind
    Message 1 of 1 , Sep 27 8:02 PM
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      There aren't any decent coronal holes in a squarely Earth-pointing
      position, but there are a couple that are sending us a brush of solar
      wind. The solar wind speed is low, but the density is high. We might
      see some mild geomagnetic storm conditions within the next 48 hours.
      Sunspot-wise, there isnt' much to talk about. Two small sunspot
      regions are visible, and neither one looks to have the potential for
      generating a significant flare.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 23
      SFI : 77
      A index : 13
      K index : 3

      Solar wind speed : 390.2 km/sec
      Solar wind density : 11.7 protons/cc
      Solar wind pressure : 3.0 nPa

      IMF : 5.2 nT
      IMF Orientation : 2.2 nT South

      GOES-12 Background X-ray Flux level : A2

      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 very low with a slight chance for an
      isolated C-flare from Region 810 (N08W62).

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be unsettled to active with minor
      storm periods possible on 28 and 29 September, as a recurrent coronal
      hole high speed stream moves into geoeffective position. Conditions
      should decrease to mostly unsettled by 30 September.

      Recent significant solar flare activity :
      None
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