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 Andenes C M X
2K 1K
20210115 73.2 82 37 13 2.1 2 0-6 20000110 10001210 20000121 289-318      
20210114 73.6 37 34 0 1.4 1 0-3 00000001 10001110 00000001 309-353      
20210113 73.2 13 0 0 3.3 3 2-5 11011011 10122111 20011133 350-422      
20210112 72.8 12 0 0 8.6 9 3-22 43221111 33331210 64211023 400-452      
20210111 73.2 33 0 0 11.9 12 0-22 10123334 00023433 20023555 298-448      
20210110 73.1 0 0 0 2.5 2 0-4 10100111 02100101 00000343 286-312      
20210109 74.2 11 0 0 1.8 2 0-5 11000000 01010110 22000001 315-414      
20210108 75.2 11 0 0 0.6 1 0-3 10000000 10000111 10000001 315-414      
20210107 74.6 12 11 0 4.9 5 2-12 12110113 02210122 11100145 376-473      
20210106 74.1 12 0 0 10.8 11 5-22 33422111 32422111 44332344 366-584      
20210105 75.1 13 0 0 10.8 11 3-32 21114313 11114323 20002435 280-440      
20210104 77.6 14 11 0 1.5 2 0-3 10110001 00111222 10000001 275-319      
20210103 80.4 14 0 0 0.9 1 0-3 00000001 01001210 00000001 281-318      
20210102 81.5 27 0 22 0.8 1 0-2 00000000 10000211 00000000 292-340      
20210101 80.4 29 24 23 2.8 3 0-5 00110101 00111111 00000002 309-369      
20201231 81.2 59 27 25 2.8 3 0-5 11011000 21121211 21010012 348-451      
20201230 82.8 84 39 26 7.5 8 3-12 23222113 22222222 44022125 402-482      
20201229 84.2 61 34 26 5.9 6 3-12 23111112 22211212 42001123 426-501      
20201228 87.2 72 32 26 6.5 6 5-9 22222121 22232211 42121033 414-561      
20201227 87.8 61 31 26 5.1 5 3-7 21122112 12122221 21010225 363-480      
20201226 87.9 54 29 31 3.8 4 0-7 02101122 01101212 02100043 356-438      
20201225 87.7 88 55 30 4.0 4 0-9 21112100 22113210 30111100 401-479      
20201224 87.4 56 28 25 8.1 8 3-15 13223311 13332221 12122423 460-568      
20201223 86.4 53 29 27 11.4 11 5-32 34222112 35332222 45222234 465-602      
20201222 85.8 60 34 11 13.1 13 6-18 33333232 33232231 44322254 426-564      
20201221 79.6 37 23 11 12.1 12 3-32 33222124 22332113 33112057 348-453      
20201220 83.8 52 11 11 4.0 4 2-5 11111101 12222211 20000002 313-378      
20201219 81.7 75 11 0 4.6 5 2-7 10122111 10233221 30010031 280-334      
20201218 80.5 68 34 0 1.6 2 0-3 00000100 00111211 10000001 276-316      
20201217 81.6 67 46 12 0.9 1 0-3 10000000 00000210 20000012 272-311      
20201216 81.9 74 35 12 2.0 2 0-4 10000101 21101110 00000022 274-311      

This page is normally updated once a day by Jan Alvestad. Solar wind speed is preliminary (* on days with too few measurements from SOHO-CELIAS/MTOF PM, measurements from DSCOVR are used). 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]