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Solar Activity Report for 12/8/01

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  • b1blancer_29501
    Things are relatively quiet this evening. There was a decent sized M3.4 class flare early this morning. There are several sunspot groups visible on the solar
    Message 1 of 702 , Dec 8, 2001
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      Things are relatively quiet this evening. There
      was a decent sized M3.4 class flare early this
      morning. There are several sunspot groups visible on the
      solar disk. Of those, 9727, 9718, and 9733 have
      flare-producing potential. Sunspot group 9727 is the largest of
      the bunch, and has the potential for producing an
      X-class flare. A large coronal hole is emerging over the
      eastern limb of the solar disk, and could be a factor
      late next week.<br><br>The current solar and
      geomagnetic conditions are : <br><br>NOAA sunspot number :
      218<br>SFI : 221<br>A index : 6<br>K index : 1<br><br>Solar
      wind speed : 393.7 km/sec<br>Solar wind density : 2.5
      protons/cc<br>Solar wind pressure : 0.5 nPa<br><br>IMF : 4.4
      nT<br>IMF Orientation : 0.6 nT South<br><br>Conditions for
      the last 24 hours : <br>Solar activity was moderate.
      The geomagnetic field was quiet to unsettled.
      <br><br>Forecast for the next 24 hours :<br>Solar activity will be
      moderate. The geomagnetic field will be quiet to
      unsettled.<br><br>Solar activity forecast :<br>Solar activity is expected
      to be moderate. Regions 9733 and 9727 are expected
      to dominate the activity, although Region 9718 could
      possibly contribute an energetic event as
      well.<br><br>Geomagnetic activity forecast :<br>The geomagnetic field is
      expected to be mostly unsettled for the next three
      days<br><br>Recent significant solar flare activity :<br>08-Dec-2001
      0634Z M3.4
    • b1blancer_29501
      On Feb 28th, the Interplanetary Magnetic Field swung to a strong south-pointing orientation. That, coupled with an elevated solar wind speed and density,
      Message 702 of 702 , Mar 1, 2002
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        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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