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
20210924 88.5     171 100 75 5.4 5 3-9 22211211 22312311 11111423 435-486 1    
20210923 89.7     156 93 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 4.5 4 2-7 22111012 23332212 31011114 344-447      
20210914 78.1 82.1 83.1 25 23 13 5.5 6 2-9 20122121 21223221 30022233 416-485      
20210913 83.3 87.0 88.2 38 28 32 9.0 9 4-15 11323223 11333323 30223335 418-526      
20210912 87.7     89 45 47 5.1 5 4-7 11121112 11222222 00122213 281-439      
20210911 91.8 95.0 96.4 126 75 93 6.6 7 3-18 31211122 31212222 52112100 288-419 1    
20210910 96.3 99.0 99.5 180 109 99 7.1 7 3-18 12211133 13312324 32210255 342-369 1    
20210909 99.7 99.0 99.6 214 134 124 4.0 4 2-6 11110112 12112122 21011124 345-410 1    
20210908 100.4 100.0 101.6 208 127 87 14.1 14 5-27 42343221 33354321 64234234 348-477 4    
20210907 101.2 99.0 100.6 169 113 85 7.8 8 3-22 11121234 11232324 20112336 274-376 2    
20210906 99.5 93.1 94.7 133 101 80 5.5 6 2-12 23011112 33123412 32112334 274-345      
20210905 93.3 85.1 86.6 148 97 66 5.4 5 0-12 23112101 ******** 52113103 286-383      
20210904 86.5 83.0 84.5 132 102 68 4.3 4 2-7 21121012 ******** 51021125 353-481      
20210903 83.8 85.0 86.6 130 69 33 6.8 7 4-12 11132112 11243320 11134235 350-429      
20210902 85.8 83.0 84.6 59 38 33 3.1 3 0-5 11011110 01112221 20013141 334-356 1    
20210901 84.2 83.0 84.7 88 56 35 4.4 4 2-7 21121101 22232211 31122234 340-380 2    
20210831 84.4 90.0 91.8 77 48 37 5.9 6 2-12 32211101 33222211 44212314 345-409      
20210830 90.6 88.0 89.8 103 56 41 6.6 7 3-12 13212112 13322312 12323136 362-447 7    
20210829 88.7 89.0 90.9 95 55 44 7.8 8 3-22 21111243 22111332 11012434 345-449 4    
20210828 89.5 89.2 91.0 122 85 77 14.3 14 2-48 53321310 53432321 65432531 345-404 10 2  
20210827 89.5 88.0 89.9 149 98 73 20.6 21 3-32 31244444 313***** 30135656 344-438 8    
20210826 88.6 83.1 85.0 144 93 47 4.8 5 3-7 22121111 22232302 32122243 348-434 3    
20210825 83.6 80.1 81.9 65 30 29 8.0 8 2-18 23311210 34422311 34422312 352-453 1    

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.

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