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
20180122 70.1 0 0 0 9.5 10 3-15 33221233 33322332 448-546      
20180121 68.3 0 0 0 6.9 7 3-12 11222232 11233222 355-493      
20180120 69.6 0 0 0 6.8 7 2-12 33310111 23322221 336-413      
20180119 70.8 14 13 11 6.3 6 2-12 13220022 23221212 302-365      
20180118 71.1 17 13 12 1.1 1 0-3 00000001 00001100 280-326      
20180117 70.9 17 14 12 0.8 1 0-2 00000000 00010110 283-340      
20180116 71.1 25 19 13 3.4 3 2-7 20111011 10131211 329-429      
20180115 70.2 31 16 12 7.8 8 3-18 32311212 33421311 425-472      
20180114 70.5 16 11 0 11.0 11 3-27 44211212 33311211 448-580      
20180113 70.8 25 12 0 5.1 5 2-12 00112132 00122232 288-576      
20180112 70.9 0 0 0 3.6 4 2-5 11111110 11221210 283-346      
20180111 70.8 12 12 12 1.9 2 0-4 01000001 01101221 330-379      
20180110 70.4 25 12 11 3.4 3 2-5 11110110 22221211 363-474      
20180109 70.8 42 26 13 8.3 8 5-22 42212211 32222221 446-519      
20180108 70.3 55 14 13 8.0 8 2-18 01213322 00324421 285-531      
20180107 69.9 12 11 11 1.4 1 0-4 10000010 00001221 278-301      
20180106 69.4 26 24 11 1.6 2 0-5 10000000 10101210 280-307      
20180105 69.3 35 11 11 4.1 4 3-6 12111111 12221221 291-371      
20180104 69.5 18 13 13 2.5 2 0-4 10100011 11111121 322-378      
20180103 70.7 39 14 0 2.6 3 0-4 01110100 11221220 322-360      
20180102 69.5 13 11 0 3.9 4 0-6 11011121 11112221 352-427      
20180101 69.1 0 0 0 9.3 9 3-18 33223112 33233111 328-448      
20171231 70.7 0 0 0 2.6 3 0-7 00000112 00000112 334-383      
20171230 70.4 14 12 0 3.0 3 0-6 01001102 12100211 343-364      
20171229 71.5 14 12 0 3.8 4 2-9 11001121 01011221 305-373      
20171228 71.1 0 0 0 4.5 4 2-6 10112112 11222211 324-415      
20171227 71.0 0 0 11 7.4 7 4-12 22111323 22221222 375-452      
20171226 71.8 18 14 14 10.4 10 5-22 33121243 23131232 418-466      
20171225 75.7 29 17 17 8.9 9 3-15 31231232 31341221 401-514      
20171224 76.1 35 22 22 11.0 11 5-18 12223323 12233223 340-563      
20171223 76.2 68 52 22 4.6 5 0-12 13121011 13231121 294-362      

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]