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Solar Activity Report for 5/23/03

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  • David
    ** Aurora Watch In Effect ** While geomagnetic activity hasn t necessarily been anything to do handsprings over, there have been G-1 geomagnetic storm
    Message 1 of 1 , May 23, 2003
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      ** Aurora Watch In Effect **

      While geomagnetic activity hasn't necessarily been anything to do
      handsprings over, there have been G-1 geomagnetic storm conditions
      within the last 24 hours, and that is expected to continue for at
      least the next 24 hours. The Earth has drifted into a high speed
      solar wind stream coming from a coronal hole, although the solar wind
      speed hasn't been particularly high this time around. It's mainly
      been in and around the 500 km/sec mark, although it is a little lower
      than that at this moment. There is at least a chance for some aurora
      tonight, especially in the higher latitudes of the northern US,
      Canada, and northern Europe. Two new sunspot regions are just now
      rotating into view, so expect to see the sunspot number rise a bit
      over the next few days. However, the background X-ray flux is holding
      low and steady, which is a good indicator that we shouldn't expect to
      see anything in the way of significant flares for the time being.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 87
      SFI : 118
      A index : 15
      K index : 3

      Solar wind speed : 443.9 km/sec
      Solar wind density : 5.5 protons/cc
      Solar wind pressure : 1.8 nPa

      IMF : 7.6 nT
      IMF Orientation : 3.7 nT South

      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 very low to low levels. Region 362
      has the potential for C-class activity.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be at quiet to active levels.
      Coronal hole high speed stream effects are expected to continue
      through day one of the period with active conditions possible. Quiet
      to unsettled conditions are expected on day two and day three.

      Recent significant solar flare activity :
      None
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