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
20180220 67.8 0 0 0 2.8 3 0-9 20001100 30022210 345-519      
20180219 69.1 0 0 0 15.3 15 7-32 44223242 54212232 507-608      
20180218 70.3 0 0 0 12.6 13 7-27 42223322 32323322 417-605      
20180217 69.0 34 11 0 10.6 11 4-22 34313212 24323212 396-555      
20180216 71.5 23 12 12 6.6 7 2-9 22210122 22311222 337-430      
20180215 72.5 16 15 15 9.5 10 0-27 10212433 10222422 270-399      
20180214 75.3 29 19 18 1.8 2 0-5 10000011 10001111 271-305      
20180213 75.9 52 24 20 2.6 3 0-5 01110001 01101111 285-306      
20180212 78.6 41 28 26 3.4 3 2-6 01110021 02210220 291-315 1    
20180211 78.2 54 27 24 2.0 2 0-3 10000100 30222302 298-324      
20180210 78.2 57 42 35 5.4 5 2-9 12122110 02242211 288-397 1    
20180209 78.1 37 27 23 4.0 4 0-12 13100002 13100111 295-342      
20180208 77.5 33 25 22 2.6 3 0-6 01012002 01110111 335-366      
20180207 76.6 34 24 20 2.0 2 0-5 00111000 01222110 351-401 2    
20180206 76.9 22 17 17 4.0 4 0-7 02121011 12222110 357-433 1    
20180205 74.0 29 15 13 6.0 6 2-9 22222210 32323231 351-386      
20180204 73.0 28 14 11 2.6 3 0-7 10001121 00111221 283-392 1    
20180203 69.2 36 22 0 2.9 3 0-5 00110011 00211111 283-309      
20180202 68.8 24 11 11 3.1 3 2-7 21110010 11212110 284-362      
20180201 69.0 25 0 0 3.5 4 2-7 20000012 20010111 348-405      
20180131 69.2 12 0 13 5.5 6 0-12 00122213 00332212 288-421      
20180130 68.9 15 18 15 3.4 3 0-9 12210000 12311110 287-328      
20180129 68.2 0 0 0 3.0 3 2-4 00111110 00111110 292-391      
20180128 68.5 0 0 0 3.4 3 0-6 11011101 11011111 325-361      
20180127 68.8 0 0 0 5.6 6 3-12 32111121 21121221 346-433      
20180126 69.8 22 11 0 7.1 7 2-15 32310122 32310222 376-466      
20180125 70.3 24 11 0 9.1 9 5-15 32221322 32231221 346-418      
20180124 69.9 0 0 0 8.6 9 0-27 00013314 00112313 340-394      
20180123 70.5 24 11 0 4.0 4 2-7 22011100 22111211 347-481      
20180122 70.1 0 0 0 11.1 11 4-18 33221333 33322332 448-546      
20180121 68.3 0 0 0 8.9 9 3-15 11223233 11233222 355-493      

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]