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2611Solar Activity Report for 3/18/06

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  • David
    Mar 18, 2006
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      ** G-2 Geomagnetic Storm In Progress **
      ** Aurora Watch In Effect **

      The Earth has moved inside of a high-speed solar wind stream, and G-2
      geomagnetic storm conditions prevail. An aurora watch is in effect,
      and skywatchers, especially those in the higher latitudes, should keep
      an eye out for aurora. The activity is expected to last about another
      3 days before dying off. There is a single sunspot region visible.
      I'm still watching and waiting for the one big flare that, at least
      for the last few sunspot cycles, has signaled the arrival of solar
      minimum.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 27
      SFI : 82
      A index : 22
      K index : 6

      Solar wind speed : 633.2 km/sec
      Solar wind density : 4.0 protons/cc
      Solar wind pressure : 2.7 nPa

      IMF : 6.8 nT
      IMF Orientation : 5.3 nT South

      GOES-12 Background X-ray Flux level : A0

      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 moderate.
      Geomagnetic storms reaching the G2 level are expected.

      Solar activity forecast :
      Solar activity is expected to remain at very low levels.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be at unsettled to active levels
      though 19 and 20 March. There is a chance for isolated periods of
      minor storm conditions through the geoeffective stage of the favorably
      positioned coronal hole. A return to quiet to unsettled levels is
      expected on 21 March as the coronal hole wanes.

      Recent significant solar flare activity :
      None