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Solar Activity Report for 8/12/03

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  • David
    ** Aurora Watch In Effect ** The Earth has begun moving into the high speed solar wind stream coming from a coronal hole, and about a day earlier than
    Message 1 of 1 , Aug 12, 2003
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      ** Aurora Watch In Effect **

      The Earth has begun moving into the high speed solar wind stream
      coming from a coronal hole, and about a day earlier than expected.
      The solar wind speed is on the high side of 600 km/sec, and G-1
      geomagnetic storm conditions have been observed within the last 24
      hours. As a result, an aurora watch is now in effect. The current
      conditions are expected to last about another 48 hours or so before
      things calm down a bit. The background X-ray flux has risen rather
      quickly, indicating that we may be in for a bit of flare activity.
      Sunspot regions 424 and 431 could produce an M-class flare.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 114
      SFI : 123
      A index : 25
      K index : 4

      Solar wind speed : 620.8 km/sec
      Solar wind density : 2.3 protons/cc
      Solar wind pressure : 1.6 nPa

      IMF : 4.7 nT
      IMF Orientation : 1.2 nT North

      Conditions for the last 24 hours :
      Space weather for the past 24 hours has been minor. Geomagnetic storms
      reaching the G1 level occurred.

      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 at low levels.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be at unsettled to minor storm
      levels through day one of the forecast period due to a recurrent high
      speed coronal hole stream. A decrease to predominantly unsettled with
      isolated active conditions are possible by day two as the coronal hole
      wanes.

      Recent significant solar flare activity :
      None
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