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702Solar Activity Report for 3/1/02

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  • b1blancer_29501
    Mar 1, 2002
      On Feb 28th, the Interplanetary Magnetic Field
      swung to a strong south-pointing orientation. That,
      coupled with an elevated solar wind speed and density,
      triggered a G-1 class geomagnetic storm. The result was
      some high latitude aurora. See this link for a
      photgraph of aurora observed over Quebec :
      <a href=http://www.spaceweather.com/aurora/images/01mar02/Moussette2.jpg target=new>http://www.spaceweather.com/aurora/images/01mar02/Moussette2.jpg</a> . As of right now, there are 3 sunspot regions,
      namely 9839, 9842, and 9845, that appear to be capable
      of producing M-class flares. Regions 9839 and 9842
      are close to rotating out of view over the western
      limb of the solar disk. Sunspot region 9845, however,
      is close to the sun's central meridian. A rather
      large coronal hole is also approaching the sun's
      central meridian, and coming into an Earth-pointing
      position. High speed colar wind gusts are likely around the
      first of next week.<br><br>The current solar and
      geomagnetic conditions are :<br><br>NOAA sunspot number :
      153<br>SFI : 188<br>A index : 10<br>K index : 1<br><br>Solar
      wind speed : 372.3 km/sec<br>Solar wind density : 4.4
      protons/cc<br>Solar wind pressure : 1.1 nPa<br><br>IMF : 8.4
      nT<br>IMF Orientation : 0.7 nT North<br><br>Conditions for
      the last 24 hours : <br>Solar activity was low. The
      geomagnetic field was quiet to unsettled. Stratwarm Alert
      exists Friday.<br><br>Forecast for the next 24 hours
      :<br>Solar activity will be low to moderate. The geomagnetic
      field will be quiet to unsettled.<br><br>Solar Activity
      Forecast :<br>Solar activity is expected to be low to
      moderate for the next three days. Region 9845 is a
      possible source for isolated M-class
      flares.<br><br>Geomagnetic activity forecast :<br>Geomagnetic field activity
      is expected to be mainly quiet to unsettled, until
      the onset of high speed stream effects from a
      recurrent coronal hole begin to develop by day three of the
      forecast period. Isolated active conditions are
      anticipated thereafter.<br><br>Recent significant solar flare
      activity :<br>None
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