POES auroral activity level charts

The POES auroral activity level frequently serves as a better indicator of reception conditions, particularly for frequencies below 2 MHz, than Earth based measurements of geomagnetic activity. For instance the K index could be 1, indicating very quiet conditions, while the auroral activity level suggests there could be significant activity in signal reflecting areas. The smoothed auroral activity index for each point in time uses the activity level for that time as well as the previous 6 and next 6 data points to calculate a smoothed value. The charts below should give a fairly good overview of auroral conditions since October 2009.

For a longer term perspective on POES and related measurements of geomagnetic activity, take a look at this paper by Leif Svalgaard.

Current chart:

POES Northern Hemisphere Smoothed Activity Level

Historical charts:

Month  POES activity level Annotated geomagnetic activity
Plot Mean level
2012-12 December 3.55  
2012-11 November 4.26  
2012-10 October 4.44  
2012-09 September 4.21  
2012-08 August 4.58  
2012-07 July 5.15  
2012-06 June 4.60  
2012-05 May 4.37  
2012-04 April 5.03  
2012-03 March 5.42  
2012-02 February 5.11  
2012-01 January 4.72 Carrington rotation 2119
2011-12 December 3.54 Carrington rotation 2118
2011-11 November 3.85 Carrington rotation 2117
2011-10 October 4.21 Carrington rotation 2116
2011-09 September 4.76 Carrington rotation 2115
2011-08 August 4.32 Carrington rotation 2114
2011-07 July 5.06 Carrington rotation 2112 / Carrington rotation 2113
2011-06 June 4.89 Carrington rotation 2111
2011-05 May 4.70 Carrington rotation 2110
2011-04 April 4.64 Carrington rotation 2109
2011-03 March 4.58 Carrington rotation 2108
2011-02 February 4.47 Carrington rotation 2107
2011-01 January 4.46 Carrington rotation 2106
2010-12 December 3.71 Carrington rotation 2105
2010-11 November 4.12 Carrington rotation 2104
2010-10 October 4.44  
2010-09 September 3.87  
2010-08 August 4.36  
2010-07 July 4.00  
2010-06 June 4.60  
2010-05 May 4.71  
2010-04 April 4.81  
2010-03 March 4.10  
2010-02 February 4.23  
2010-01 January 3.42  
2009-12 December    
2009-11 November    
2009-10 October