Solar and geomagnetic data

Date Solar flux density
2.8 GHz
Sunspot number Planetary A index
(3)
K indices
(3-hour intervals) (3)
Solar wind
speed range
(km/s)
(SOHO)(2)
Number
of flares
DRAO (4) Almaty (1)
(averages)
STAR
(SDO)
NOAA STAR
ap avg
Pots-
dam
WDC
Daily
ap range
Planetary
(WDC)
Boulder Andenes C M X
Measured (20h UT) (02-11 UT) 2K 1K
  1AU
20210725 81.6 83.1 85.7 72 39 24 2.3 2 0-5 01010001 00121312 00001014 307-366*      
20210724 83.9 84.0 86.7 102 70 24 3.1 3 0-5 11110001 02112312 01102224 308-369* 1    
20210723 87.4 88.0 90.8 75 50 46 3.4 3 2-5 01111111 10212211 01011203 337-413* 1    
20210722 89.0 90.6 93.5 109 92 77 8.6 9 3-18 12333111 12442311 34444331 414-467*      
20210721 93.5 86.0 88.8 173 99 86 5.8 6 2-9 22112210 33122210 43114421 380-590* 2    
20210720 87.0 83.1 85.8 111 72 59 9.8 10 5-15 21321233 32322333 41222355 417-528* 1    
20210719 82.6 87.0 89.8 64 49 45 6.6 7 3-12 22312122 ******** 22212334 366-476* 2    
20210718 80.4 77.1 79.6 93 57 42 3.1 3 0-7 00011102 10111212 00012102 368-407*      
20210717 77.4 75.6 78.2 112 74 53 3.5 4 2-6 11011210 21111211 33111220 375-436*      
20210716 75.0     76 50 35 3.3 3 2-6 20000121 21012311 41111131 407-486* 2    
20210715 73.5 72.8 75.2 76 46 22 8.4 8 6-12 22222232 23333322 33333335 358-480*      
20210714 72.1 70.8 73.2 78 36 23 14.0 14 0-32 01124443 01234433 01113444 320-422*      
20210713 72.0 72.1 74.6 81 49 11 4.1 4 2-9 21011111 22012211 43101113 307-369*      
20210712 71.6     46 22 22 6.4 6 2-12 10112322 20113433 30013425 293-353*      
20210711 73.6     64 36 23 3.0 3 0-5 00001111 10121322 20001113 302-413*      
20210710 74.0     53 37 24 5.6 6 2-12 32100112 33211212 55110225 318-447*      
20210709 73.6 73.0 75.4 99 73 23 4.0 4 2-6 21110111 22121322 32121101 303-356* 3    
20210708 73.4 75.1 77.6 51 35 23 3.6 4 2-6 11201110 21212311 31102110 307-332*      
20210707 76.0 82.2 84.9 56 48 25 4.8 5 3-7 11211112 11222312 12122224 317-396*      
20210706 83.2 87.0 90.0 78 70 52 6.4 6 3-12 21213121 22322321 53224222 325-400* 2    
20210705 89.4 90.1 93.2 91 70 43 6.8 7 4-12 21122132 21222322 10022344 321-345* 2    
20210704 91.1 92.9 96.0 97 69 60 2.6 3 2-5 01100100 12111201 11000100 306-369* 6 1  
20210703 93.7 94.6 97.8 128 74 81 3.4 3 0-7 21111100 21212211 33101110 368-480* 4 2 1
20210702 94.9 94.0 97.2 169 143 72 4.4 4 3-6 11111211 11212221 31211323 414-499*      
20210701 94.1 93.1 96.2 144 89 56 5.3 5 2-15 32110111 43211222 53111211 449-508*      
20210630 94.1 92.1 95.2 134 110 53 13.1 13 2-27 02331344 12332334 02123354 332-522* 2    
20210629 92.5 87.9 90.9 183 118 56 4.5 4 2-9 10112220 10112312 20002351 313-355*      
20210628 88.6 86.0 88.9 156 106 50 2.9 3 2-4 10001111 21111311 20001101 307-370* 2    
20210627 87.0 81.1 83.9 109 76 32 3.0 3 2-4 00101111 10211221 11002102 312-376*      
20210626 82.4 82.1 84.8 107 67 16 3.1 3 2-5 00111100 10121211 00112201 336-405*      

1) Data obtained courtesy of the Institute of Ionosphere, Kazakhstan
2)
Solar wind speed is preliminary (* on days with none or too few measurements from SOHO-CELIAS/MTOF PM, measurements from DSCOVR are used)
3) Ap and Kp values in red are based on the definitive Potsdam WDC data.
4) Flare enhanced measurements and measurements that most likely are invalid are replaced by other same day measurements ## (continuous QC process). Solar flux measurements that may be invalid are temporarily marked ** , while interpolated values are marked # .

This page is normally updated once a day by Jan Alvestad.

[Solar Terrestrial Activity Report]