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
20200811 73.5 28 22 12 2.4 2 0-5 11000000 11111211 272-320      
20200810 74.2 14 13 12 1.9 2 0-4 10000001 11001200 273-350      
20200809 73.9 29 13 13 1.8 2 0-3 00010001 01011211 316-359      
20200808 74.7 26 12 11 4.5 4 2-7 22111110 22222311 345-442 1    
20200807 74.0 41 24 14 3.1 3 0-7 11000012 12012222 374-449      
20200806 73.1 59 36 14 4.4 4 2-7 11012212 02113312 386-559      
20200805 73.4 46 25 13 4.5 4 3-6 21111121 23101321 421-575      
20200804 73.0 45 12 12 7.0 7 4-18 23221112 24222322 565-775      
20200803 72.7 43 24 23 16.0 16 7-22 43332333 43342333 533-746      
20200802 72.7 70 23 22 8.6 9 2-18 01133323 12234223 316-564      
20200801 72.0 57 34 22 2.9 3 0-4 01101111 10112211 335-353      
20200731 72.3 31 25 23 3.6 4 2-5 11011111 21022202 287-364      
20200730 73.3 29 24 22 3.0 3 0-6 11210001 21312210 311-360      
20200729 72.6 25 22 22 3.9 4 2-7 21201110 11312211 325-395      
20200728 71.8 35 23 22 3.5 4 2-7 21101111 21113211 346-438      
20200727 71.4 34 22 11 3.1 3 2-4 11101111 11211211 346-437      
20200726 71.4 14 11 11 2.6 3 2-4 10001001 11012201 347-440      
20200725 70.4 11 11 11 12.0 12 6-27 43222224 ******** 334-421      
20200724 69.5 24 23 11 11.6 12 4-22 13322433 232334** 285-437      
20200723 70.3 23 11 11 2.5 2 2-4 00111000 11122311 282-310      
20200722 70.0 11 11 11 2.6 3 0-5 11000110 21021312 276-299      
20200721 69.8 11 11 11 3.8 4 2-6 11101112 12211212 302-348      
20200720 69.3 11 0 0 3.0 3 2-4 01100011 11102211 310-347      
20200719 68.9 11 0 0 3.4 3 0-6 01111112 11122112 309-344      
20200718 67.8 11 0 0 3.3 3 2-5 11101001 21111211 318-386      
20200717 69.0 56 11 0 3.6 4 2-5 10011111 21102211 344-431      
20200716 68.7 0 0 0 3.3 3 0-6 00021111 ******** 349-427      
20200715 68.4 35 11 0 3.9 4 0-7 01112210 03223211 310-410      
20200714 68.8 12 0 0 10.1 10 2-22 44312100 34521211 308-395      
20200713 68.2 0 0 0 5.8 6 3-12 11221113 21221223 276-359      
20200712 67.6 0 0 0 1.8 2 0-3 00011000 11012211 280-302      

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]