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2505Solar Activity Report for 8/16/05

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  • David
    Aug 16, 2005
      ** Aurora Watch In Effect **

      The Earth is in the middle of a high-speed solar wind stream coming
      from a coronal hole, and the solar wind speed is on the happy side of
      680. The result has been at least one sighting in Alaska of some
      impressive aurora, as can be seen here :
      http://www.spaceweather.com/aurora/images2005/10aug05/Pederson1.jpg .
      The effect is projected to last through the 19th. On the sunspot
      side of things, there is but a single sunspot region visible, and it
      doesn't appear to have the potential of generating a significant flare
      at the present time.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 49
      SFI : 76
      A index : 16
      K index : 3

      Solar wind speed : 689.7 km/sec
      Solar wind density : 2.4 protons/cc
      Solar wind pressure : 1.3 nPa

      IMF : 4.8 nT
      IMF Orientation : 3.2 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 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 797.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to remain at unsettled to active
      levels on 17 August. Activity should gradually decline on 18 August
      and should be quiet to unsettled by 19 August as the coronal hole high
      speed stream moves out of geoeffective position.

      Recent significant solar flare activity :