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Solar Activity Report for 10/5/01

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  • b1blancer_29501
    After a week of elevated geomagnetic activity, the geomagnetic field has calmed back down to normal levels. However, there is a possibility of elevated
    Message 1 of 702 , Oct 5, 2001
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      After a week of elevated geomagnetic activity,
      the geomagnetic field has calmed back down to normal
      levels. However, there is a possibility of elevated
      activity in the next 24 hours due to high-speed solar wind
      gusts from an Earth-pointing coronal hole. The recent
      active geomagnetic conditions produced some of the
      brightest aurora of the young aurora season. There were 3
      different days in which aurora were sighted. See this link
      for some great aurora pictures.
      <a href=http://www.spaceweather.com/aurora/gallery_01oct01.html target=new>http://www.spaceweather.com/aurora/gallery_01oct01.html</a><br><br>There are several sunspot groups on the visible solar
      disk. While none appear to be capable of producing a
      major flare, sunsput groups 9641, 9645, and 9653 have
      the potential of producing an M-class flare. In fact,
      as I type this, GOES 8 satellite X-ray flux data
      shows that an M-2 class flare has just
      occurred<br><br>The current solar and geomagnetic conditions are
      :<br><br>NOAA sunspot number : 160<br>SFI : 177<br>A index :
      10<br>K index : 2<br><br>Solar wind speed : 398.2
      km/sec<br>Solar wind densiry : 2.2 protons/cc<br>Solar wind
      pressure : 0.9 nPa<br><br>IMF : 6.1 nT<br>IMF Orientation
      : 3.3 nT South<br><br>Conditions for the last 24
      hours :<br>Solar activity was moderate. The geomagnetic
      field was quiet to active.<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. M-class activity is possible from Regions
      9641, 9645, and 9653.<br><br>Geomagnetic activity
      forecast :<br>Geomagnetic activity is expected to be at
      quiet to unsettled levels.
    • 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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