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Solar Activity Report for 5/18/05

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  • David
    The space weather over this past weekend was definitely impressive to witness. At one point, G-5 geomagnetic storm conditions existed. Aurora were seen and
    Message 1 of 1 , May 18, 2005
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      The space weather over this past weekend was definitely impressive to
      witness. At one point, G-5 geomagnetic storm conditions existed.
      Aurora were seen and photographed as far south as Arizona. Incredible
      aurora pictures were captured all over North America, as can be seen
      here : http://www.spaceweather.com/aurora/gallery_01may05_page2.htm .
      So what's happening now? Well, the source of this past weekend's
      action, sunspot region 759, is decaying and approaching the western
      limb of the solar disk. It will soon be out of view. It did manage
      to get off a parting shot. There was an M1.8 flare on the 17th, and
      it produced a faint full-halo CME. It should be arriving at Earth
      within the next 24 hours. Don't expect to see anything like what we
      saw last weekend, but the activity level could kick back up a bit.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 46
      SFI : 84
      A index : 13
      K index : 2

      Solar wind speed : 508.1 km/sec
      Solar wind density : 2.3 protons/cc
      Solar wind pressure : 1.0 nPa

      IMF : 7.3 nT
      IMF Orientation : 2.2 nT North

      GOES-12 Background X-ray Flux level : A8

      Conditions for the last 24 hours :
      No space weather storms were observed for the past 24 hours.

      Forecast for the next 24 hours
      No space weather storms are expected for the next 24 hours.

      Solar Activity Forecast :
      Solar activity is expected to be very low to low with a chance for an
      isolated M-flare.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be quiet to active on 19 May as a
      faint full halo CME, from 17 May, may arrive late in the day.
      Unsettled conditions are expected on 20 May. Quiet to unsettled
      conditions are expected on 21 May.

      Recent significant solar flare activity :
      17-May-2005 0239Z M1.8
      16-May-2005 0908Z M1.6
      16-May-2005 0243Z M1.4
      15-May-2005 2236Z M3.5
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