Solar and geomagnetic data

Date Measured
solar flux
2.8 GHz
Sunspot number Planetary A index K indices
(3-hour intervals)
Solar wind
speed range
(km/s)
(SOHO)
Number
of flares
Magnetic
(SDO)
NOAA STAR
ap avg
Pots-
dam
WDC
Daily
ap range
Planetary
(WDC)
Boulder C M X
2K 1K
20170123 84.1 72 46 53 3.8 4 2-6 00101122 00111211 394-462      
20170122 86.8 84 70 61 8.0 8 5-15 33212112 33332221 445-550      
20170121 86.1 103 80 67 9.9 10 4-18 32221233 21321222 447-497 6    
20170120 83.2 104 75 61 8.6 9 4-15 33212123 23322222 459-560      
20170119 79.5 68 58 26 9.3 9 5-18 32332212 33342221 489-583      
20170118 78.6 64 54 25 13.3 13 3-22 12323343 13334433 287-580      
20170117 78.6 63 60 26 2.9 3 2-6 10000210 01011111 277-308      
20170116 78.3 56 54 24 1.6 2 0-3 10000011 00201111 278-321      
20170115 77.5 61 45 23 4.6 5 2-5 21211121 10211221 298-355      
20170114 76.6 64 35 25 3.5 4 2-5 11100111 02201111 300-375      
20170113 74.9 38 36 24 3.5 4 0-5 11001111 12000112 333-360      
20170112 75.5 36 22 11 3.8 4 0-9 22000012 13000112 351-433 1    
20170111 74.5 11 11 0 6.0 6 2-9 22201222 22311322 429-527      
20170110 72.7 23 0 0 7.1 7 2-15 22201322 11211432 459-591      
20170109 71.2 13 11 0 10.5 10 5-18 32123313 32213322 570-715      
20170108 71.5 12 11 0 14.1 14 7-27 22243234 33333233 576-731      
20170107 72.0 0 0 0 18.1 18 12-32 43334433 42334433 586-753      
20170106 72.0 22 11 0 12.4 12 9-18 33322223 45433332 574-741      
20170105 73.4 0 0 0 16.1 16 7-27 33223344 34323324 453-731      
20170104 72.4 11 0 0 9.0 9 5-18 11222233 11232332 352-530      
20170103 73.4 11 11 11 10.0 10 2-18 01232333 12243322 352-529      
20170102 73.0 13 12 0 5.4 5 2-9 12211201 13322211 353-446      
20170101 72.5 12 12 0 11.8 12 6-22 43322322 34432321 442-547      
20161231 73.5 36 23 11 11.0 11 3-18 12233332 02234432 276-557      
20161230 73.6 11 11 11 2.5 2 0-5 01001101 12011210 292-360      
20161229 73.4 11 0 0 4.1 4 2-7 21011200 21222211 338-408      
20161228 73.3 28 23 14 4.8 5 2-7 22011211 12111211 375-468      
20161227 73.7 48 46 14 10.9 11 5-22 43222123 *******2 456-642      
20161226 73.8 30 26 13 20.5 20 12-39 53334433 ******** 576-728      
20161225 72.5 11 11 0 19.8 20 7-27 33244443 4323333* 554-720      
20161224 73.1 0 0 0 11.9 12 7-15 33323322 23423322 554-704      

This page is normally updated once a day by Jan Alvestad. Solar wind speed is preliminary. Ap and Kp values in red are based on the definitive Potsdam WDC data. Flare enhanced and erroneous solar flux measurements are replaced by other same day measurements (QC).

[Solar Terrestrial Activity Report]