1<HTML> 2<HEAD> 3 <META NAME="GENERATOR" CONTENT="Adobe PageMill 3.0 Win"> 4 <TITLE>Geomagnetic Storms</TITLE> 5</HEAD> 6<BODY BGCOLOR="#ffffff"> 7 8<P><FONT SIZE="+2" FACE="Courier New">Geomagnetic Storm Forecasts</FONT></P> 9 10<P><FONT FACE="Courier New">The geomagnetic storm probabilities 11are the estimated chances of at least one 3-hour K index, at the 12indicated level, for each of the next 3 days.<BR> 13<BR> 14Active: K = 4.<BR> 15Minor storm: K = 5.<BR> 16Major or Severe storm: K > 6.</FONT></P> 17 18<P><FONT FACE="Courier New">The "<A HREF="kp.html">K index</A>" 19is a 3-hourly quasi-logarithmic local index of geomagnetic activity 20relative to an assumed quiet-day curve for the recording site. 21Range is from 0 to 9. The K index measures the deviation of the 22most disturbed horizontal component of the magnetic field.</FONT></P> 23 24<P><FONT FACE="Courier New">Back to <A HREF="http://www.spaceweather.com/">spaceweather.com</A></FONT> 25 26</BODY> 27</HTML>
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