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
20210930 94.6     89 65 46 7.4 7 0-22 10011343 21112332| 20011344 347-559 1    
20210929 101.6     134 104 74 4.0 4 0-7 10112121 10122322 10012232 375-483 4    
20210928 88.9     174 106 57 9.5 10 5-18 12222233 12332233 22222255 443-589 1    
20210927 85.3     114 80 30 6.0 6 3-9 22111212   33010212 346-470      
20210926 86.3     116 93 67 1.3 1 0-3 10000001 10001112 30000002 346-447 2    
20210925 88.4     141 90 38 6.4 6 4-12 23221112 22221221 11111423 445-557 3    
20210924 88.4     156 93 75 5.4 5 3-9 22211211 22312311 33121114 435-486 1    
20210923 89.7     171 100 75 9.6 10 3-22 33422211 22533221 42322100 349-401 2 2  
20210922 88.5     215 123 76 11.8 12 2-27 43431022 32532111 65233345 347-412 1    
20210921 84.9     163 103 50 6.6 7 2-15 20001323 20112423 40011434 284-392 3    
20210920 80.0 73.9 74.7 117 95 51 2.4 2 0-5 10010001 20012211 22010112 276-347      
20210919 75.0 73.0 73.8 81 41 13 1.5 2 0-4 10011000 10012110 20011010 302-380      
20210918 73.7 73.0 73.8 35 12 11 9.1 9 2-18 33322001 35533211 33322013 347-442 1    
20210917 73.4 73.0 73.8 11 0 0 22.5 22 4-56 23132355 23133454 12023466 320-482 1    
20210916 73.2 74.1 75.0 11 0 0 2.8 3 0-5 11000111 11102210 00001002 330-360      
20210915 75.2 77.0 78.0 23 11 0 4.9 5 3-7 22111112 23332212 31011114 344-447      
20210914 78.1 82.1 83.1 25 23 13 5.3 5 2-9 20122121 21223221 30022233 416-485      
20210913 83.3 87.0 88.2 38 28 32 8.3 8 2-15 10323223 11333323 30223335 418-526      
20210912 87.7     89 45 47 5.3 5 4-7 11121212 11222222 00122213 281-439      
20210911 91.8 95.0 96.4 126 75 93 6.4 6 2-18 30211122 31212222 52112100 288-419 1    
20210910 96.3 99.0 99.5 180 109 99 7.6 8 3-18 12211133 13312324 32210255 342-369 1    
20210909 99.7 99.0 99.6 214 134 124 4.1 4 3-6 12111112 12112122 21011124 345-410 1    
20210908 100.4 100.0 101.6 208 127 87 14.0 14 4-27 42343221 33354321 64234234 348-477 4    
20210907 101.2 99.0 100.6 169 113 85 8.0 8 3-22 11122234 11232324 20112336 274-376 2    
20210906 99.5 93.1 94.7 133 101 80 5.8 6 2-12 23011212 33123412 32112334 274-345      
20210905 93.3 85.1 86.6 148 97 66 5.5 6 2-9 22112201 ******** 52113103 286-383      
20210904 86.5 83.0 84.5 132 102 68 4.4 4 3-7 21121112 ******** 51021125 353-481      
20210903 83.8 85.0 86.6 130 69 33 6.5 6 4-9 11122212 11243320 11134235 350-429      
20210902 85.8 83.0 84.6 59 38 33 3.3 3 0-5 11011110 01112221 20013141 334-356 1    
20210901 84.2 83.0 84.7 88 56 35 4.4 4 2-6 21121101 22232211 31122234 340-380 2    

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]