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

SolarActivity Report for 8/15/02

Expand Messages
  • b1blancer_29501
    ** Aurora Watch In Effect ** The sun has been quite active over the last 48 hours. Most of the activity has been caused by sunspot region 69. This very
    Message 1 of 1 , Aug 15, 2002
    View Source
    • 0 Attachment
      ** Aurora Watch In Effect **

      The sun has been quite active over the last 48 hours. Most of the
      activity has been caused by sunspot region 69. This very active
      sunspot region has produced several M-class flares, the strongest
      being a long duration M-2 flare that happened on 8/14. That event set
      off an S-1 class solar radiation storm, and fired off a partial halo
      CME. The CME struck Earth's magnetosphere at about 3 pm eastern time
      on Thursday, and triggered a G-1 class geomagnetic storm. Aurora were
      seen at the higher latitudes in Europe, including this display
      photographed in Finland :
      http://www.spaceweather.com/aurora/images/15aug02/Eklund1.jpg . More
      aurora are possible this evening, and an aurora watch remains in
      effect. Solar activity is forecasted to be moderate as sunspot region
      69 makes its way across the solar disk, and more flares are certainly
      a possibility.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 281
      SFI : 210
      A index : 21
      K index : 3

      Solar wind speed : 599.9 km/sec
      Solar wind density : 1.5 protons/cc
      Solar wind pressure : 1.0 nPa

      IMF : 4.8 nT
      IMF Orientation : 2.1 nT South

      Conditions for the last 24 hours :
      Space weather for the past 24 hours has been minor. Geomagnetic storms
      reaching the G1 level occurred. 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.
      Geomagnetic storms reaching the G1 level are expected. Radio blackouts
      reaching the R1 level are expected.

      Solar activity forecast :
      Solar activity is expected to be moderate. Isolated low level M-class
      flares are expected. There is a chance for an isolated major flare
      from Region 69.

      Geomagnetic activity forecast :
      Geomagnetic field activity is expected to increase to active to minor
      storm levels near the start of the period following yesterday's
      long-duration M2/partial-halo CME event. Field activity is expected to
      decrease to unsettled to active levels on 17 August as CME effects
      subside. Quiet to unsettled levels are expected on 18 August. There is
      a slight chance for a greater than 10 MeV proton event during the
      period. The greater than 2 MeV electron flux is expected to be at
      moderate to high levels during the period.

      Recent significant solar flare activity :
      15-Aug-2002 2333Z M1.0
      15-Aug-2002 0605Z M1.0
      14-Aug-2002 1815Z M1.4
      14-Aug-2002 0212Z M2.3
    Your message has been successfully submitted and would be delivered to recipients shortly.