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Solar Activity Report for 10/13/01

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  • b1blancer_29501
    The geomagnetic storm of 2 days ago has died out, but it provided some very nice auroras that were sighted in Europa, Canada, and the Northern US. See this
    Message 1 of 702 , Oct 13, 2001
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      The geomagnetic storm of 2 days ago has died out,
      but it provided some very nice auroras that were
      sighted in Europa, Canada, and the Northern US. See this
      link for some aurora pictures :
      <a href=http://www.spaceweather.com/aurora/gallery_12oct01.html target=new>http://www.spaceweather.com/aurora/gallery_12oct01.html</a> Things are relatively quiet for the time being,
      although sunspot group 9661, which has a surface area
      about 4 times that of Earth, has rotated into view over
      the Easten limb of the solar disk. This sunspot group
      has a complex, twisted magnetic field and has the
      potential for generating M and X class flares.<br><br>The
      current solar and geomagnetic conditions are
      :<br><br>NOAA sunspot number : 166<br>SFI : 180<br>A index :
      12<br>K index : 2<br><br>Solar wind speed : 477.9
      km/sec<br>Solar wind density : 3.2 protons/cc<br>Solar wind
      pressure : 0.9 nPa<br><br>IMF : 5.4 nT<br>IMF Orientation
      : 0.9 nT South<br><br>Conditions for the last 24
      hours :<br>Solar activity was low. The geomagnetic
      field was quiet to unsettled.<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. C-class flares should
      continue and M-class flares are possible. Region 9661
      appears to have potential for an isolated major
      flare<br><br>Geomagnetic activity forecast :<br>The geomagnetic field is
      expected to be quiet to unsettled.
    • 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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