Loading ...
Sorry, an error occurred while loading the content.

Solar Activity Report for 5/11/03

Expand Messages
  • David
    ** Aurora Watch In Effect ** G-1 and G-2 geomagnetic storms have been going all weekend, and it doesn t look like it will calm down for at least another three
    Message 1 of 1 , May 11, 2003
    View Source
    • 0 Attachment
      ** Aurora Watch In Effect **

      G-1 and G-2 geomagnetic storms have been going all weekend, and it
      doesn't look like it will calm down for at least another three days.
      There have been some great aurora pictures captured, including this
      one in Alberta, Canada.
      http://science.nasa.gov/spaceweather/aurora/images2003/10may03/Taylor8.jpg
      The Earth is still inside a coronal hole solar wind stream, which
      is the cause of all the activity. Look for the solar wind speed to
      stay in the neighborhood 600 - 700 km/sec, give or take a little. How
      much of a geomagnetic storm we get from one hour to the next will
      depend largely upon the orientation of the Interplanetary Magnetic
      Field. There's still very little to report from the flare and sunspot
      department, and the background X-ray flux is quite low, and only two
      small sunspot regions are visible tonight.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 47
      SFI : 92
      A index : 27
      K index : 4

      Solar wind speed : 649.5 km/sec
      Solar wind density : 2.7 protons/cc
      Solar wind pressure : 1.9 nPa

      IMF : 8.4 nT
      IMF Orientation : 0.6 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 moderate.
      Geomagnetic storms reaching the G2 level are expected.

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

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be at unsettled to major storm
      levels for the next three days. A significant coronal hole will be in
      geoeffective position at the beginning of the period, and is of great
      enough extent to continue to impact the earth's magnetic field for
      several days.

      Recent significant solar flare activity :
      None
    Your message has been successfully submitted and would be delivered to recipients shortly.