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Solar Activity Report for 3/14/03

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  • David
    ** G-1 Geomagnetic Storm In Progress ** ** Aurora Watch In Effect ** The Earth has moved into a high speed, coronal hole generated solar wind stream, and a G-1
    Message 1 of 1 , Mar 14, 2003
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      ** G-1 Geomagnetic Storm In Progress **
      ** Aurora Watch In Effect **

      The Earth has moved into a high speed, coronal hole generated solar
      wind stream, and a G-1 class geomagnetic storm is in progress. It was
      up to the G-2 level earlier today. An aurora watch is in effect.
      Skywatchers, especially those in the higher latitudes, should
      definitely keep an eye out for aurora tonight. The coronal hole
      causing all the commotion is a pretty large one, and I wouldn't be
      surprised to see the high solar wind speeds persist for several days.
      Geomagnetic storm conditions are expected to last at least another
      24 hours, and quite possibly more. The exact amount of geomagnetic
      activity we see will be dependent upon how the Interplanetary Magnetic
      Field (IMF) decides to orient itself over the next few days. There
      are three numbered sunspot regions visible this evening. If those,
      sunspot region 306 is easily the largest, and has at least an outside
      chance of producing an M-class flare.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 114
      SFI : 139
      A index : 17
      K index : 5

      Solar wind speed : 641.8 km/sec
      Solar wind density : 2.3 protons/cc
      Solar wind pressure : 1.7 nPa

      IMF : 7.5 nT
      IMF Orientation : 4.2 nT South

      Conditions for the last 24 hours :
      Space weather for the past 24 hours has been moderate. Geomagnetic
      storms reaching the G2 level occurred.

      Forecast for the next 24 hours :
      Space weather for the next 24 hours is expected to be minor.
      Geomagnetic storms reaching the G1 level are expected.

      Solar activity forecast :
      Solar activity is expected to be at low levels. Regions 306 (N07W19)
      and 314 have C-class potential and a slight chance for M-class events.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be at quiet to active levels with
      isolated minor storm levels possible. High speed stream effects are
      expected to continue through the forecast period.

      Recent significant solar flare activity :
      None
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