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Solar flare information

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  • b1blancer_29501
    Mike asked me to post the following information here. Unfortunately, I haven t been keeping track of any running totals of anything, but here is a summary of
    Message 1 of 702 , Aug 14, 2001
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      Mike asked me to post the following information
      here. Unfortunately, I haven't been keeping track of
      any running totals of anything, but here is a summary
      of solar flares from April until now.<br><br>April
      started out with a real bang when sunspot groups 9393 and
      9415 combined to produce dozens of M and X-class
      flares. The honor for the strongest flare goes to sunspot
      group 9393, which banged off what was estimated to be
      an X-17 flare...the strongest solar flare ever
      recorded. That happened on April 2. Sunspot group 9393
      stayed intact for an unprecedented 3 full rotations
      around the sun.<br><br>During May things calmed down
      considerably, and it actually got quite boring! Activity picked
      back up in June, with the sunspot number over 200 for
      much of the time. There were also quite a few M-class
      flares in June, although no flares were produced of the
      X-class variety.<br><br>July, in contrast, was very
      quiet. During the last week of June, there were several
      large, complex sunspot groups visible. They all decayed
      quite suddenly, and there have been very few flares
      since then. There were a couple of M-class flares
      earlier this month.
    • 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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