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Solar Activity Report for 4/28/04

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  • David
    The solar wind speed is up slightly, indicating that the Earth has moved into an area of higher speed solar wind coming from a small coronal hole. There
    Message 1 of 1 , Apr 28 10:34 PM
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      The solar wind speed is up slightly, indicating that the Earth has
      moved into an area of higher speed solar wind coming from a small
      coronal hole. There hasn't been much of an increase in the speed,
      however, and no geomagnetic storm conditions have been observed. The
      best chance of significant activity may come on the 29th and 30th.
      Ironically, it would be from a relatively insignificant event.
      Sunspot region 599 fired off a C-3 class flare on the 27th. That's a
      low level flare, but it launched a CME in our direction, proving once
      again that you don't necessarily need a strong flare to have a CME.
      The CME is expected to arrive at Earth on or about the 29th, and
      geomagnetic storm conditions are a possibility. Stay tuned!

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 32
      SFI : 90
      A index : 10
      K index : 1

      Solar wind speed : 506.3 km/sec
      Solar wind density : 2.2 protons/cc
      Solar wind pressure : 0.8 nPa

      IMF : 4.9 nT
      IMF Orientation : 0.1 nT North

      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. Isolated C-class
      flares are possible from Regions 596 and 599.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be at quiet to unsettled levels,
      with isolated active to minor storm conditions possible on day two (30
      April). Activity should return to quiet to unsettled levels on 1 May.

      Recent significant solar flare activity :
      None
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