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Solar Activity Report for 5/26/05

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  • David
    Although conditions are quiet for the moment, there are things in the works that will serve to elevate the activity level soon. First of all, a coronal hole
    Message 1 of 1 , May 26 8:13 PM
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      Although conditions are quiet for the moment, there are things in the
      works that will serve to elevate the activity level soon. First of
      all, a coronal hole has rotated into an Earth-pointing position. We
      should begin to see some solar wind gusts from it beginning sometime
      tomorrow. Earlier today, a long-duration C-class flare was observed
      from sunspot region 767. A filament eruption accompanied this event,
      along with a faint full-halo CME. Look for the CME to arrive here at
      Earth on the 29th. Lastly, old sunspot region 758, which generated
      M-class flares on it's last trip by, has held together during its
      transition across the back side of the sun, and will soon be rotating
      into view again.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 72
      SFI : 90
      A index : 2
      K index : 1

      Solar wind speed : 301.1 km/sec
      Solar wind density : 2.1 protons/cc
      Solar wind pressure : 0.4 nPa

      IMF : 2.8 nT
      IMF Orientation : 1.6 nT North

      GOES-12 Background X-ray Flux level : A9

      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 low. Region 767 has the potential for
      C-class activity with a small chance for an M-class flare. Old Region
      758 (S10, L=139), which produced three M-flares on its last rotation,
      is expected to rotate onto the visible disk on 28 May.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be quiet to unsettled with
      occasional active periods on 27 and 28 May due to the effects of a
      coronal hole high speed stream. The full halo CME from 26 May is
      expected to cause active to minor storm conditions on 29 May.

      Recent signigicant solar flare activity :
      None
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