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

Solar Activity Report for 7/8/02

Expand Messages
  • b1blancer_29501
    ** Aurora Watch In Effect ** Solar wind speed and density are both elevated this evening, and there was actually an S-1 solar radiation storm that brewed for
    Message 1 of 1 , Jul 8, 2002
    View Source
    • 0 Attachment
      ** Aurora Watch In Effect **

      Solar wind speed and density are both elevated this evening, and there
      was actually an S-1 solar radiation storm that brewed for awhile on
      the 7th. There were a pair of CME's that erupted off of the sun on
      the 7th, probably as a result of a long-duration M-class flare that
      also happened on that day. My guess is that the aforementioned solar
      radiation storm was related to that flare. The last couple of days
      have been active flare-wise, with 4 M-class flares being produced, the
      largest being an M-2 class flare that happened on the 8th. While the
      CME-s were not squarely Earth-directed, we could receive something of
      a glancing blow from them on the 9th or 10th. The exact moment of
      impact could be a bit difficult to discern since solar wind activity
      is already elevated due to coronal hole effects, which are expected to
      last a few more days. Speaking of coronal hole effects, the Earth was
      inside a high-speed solar wind stream on July 4th. That triggered
      some geomagnetic activity, and also produced a very nice aurora
      display over Canada. See this link for a great picture taken in
      Manitoba, Canada.
      http://www.spaceweather.com/aurora/images/06jul02/Justice2.jpg .

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 125
      SFI : 131
      A index : 10
      K index : 2

      Solar wind speed : 435.8 km/sec
      Solar wind density : 6.8 protons/cc
      Solar wind pressure : 2.6 nPa

      IMF : 6.8 nT
      IMF Orientation : 3.9 nT North

      Conditions for the last 24 hours :
      Space weather for the past 24 hours has been minor. Radio blackouts
      reaching the R1 level occurred.

      Forecast for the next 24 hours :
      Space weather for the next 24 hours is expected to be minor. Radio
      blackouts reaching the R1 level are expected.

      Solar activity forecast :
      Solar activity is expected to be predominantly low, with a chance for
      isolated, moderate-level activity. Region 19 (S19W44) remains a
      possible source of isolated M-class flares.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be mainly quiet to unsettled. A
      chance for isolated active periods exists for the next two days.

      Recent significant solar flare activity :
      08-Jul-2002 2320Z M2.3
      08-Jul-2002 0921Z M1.6
      07-Jul-2002 1143Z M1.0
      06-Jul-2002 0342Z M1.8
    Your message has been successfully submitted and would be delivered to recipients shortly.