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)
(daily avg)		 STAR
(SDO) (6)		 NOAA
(5)		 STAR
ap avg		 Pots-
dam
WDC		 Daily
ap range		 Planetary
(WDC)		 Boulder
(5)		 Andenes
(Tromsų)		 C M X
Measured
(20h UT)		 (02-11 UT) 2K 1K
  1AU
20250620 129.7     162 117 95 9.3 9 4-15 22322321 13323321 44324432 465-649 6 2  
20250619 136.2 167.5 172.9 246 184 113 10.3 10 4-32 21211243 32213243 53201354 437-614 30   1
20250618 137.0 166.9 172.2 244 186 120 13.4 13 7-22 33233224 32333334 53233444 454-601 46    
20250617 139.2 172.7 178.2 284 194 97 7.8 8 5-12 12213222 21323324 23224353 454-586 28 2 1
20250616 147.9 181.0 186.7 259 135 125 9.6 10 6-22 23422122 22412333 33433343 389-573 28 4  
20250615 160.5 176.0 181.5 265 194 141 9.3 9 5-18 21222332 21233322 42333433 426-607 35 4  
20250614 150.8 168.7 174.0 285 203 136 24.6 25 15-56 55333333 44342333 65334345 406-594 28 2  
20250613 143.0 158.8 163.8 249 163 134 64.8 65 39-111 76556566 55565445 67754546 375-491 22 1  
20250612 141.5 163.9 168.9 257 176 116 30.6 31 12-56 54433355 45543343 55544454 382-476 21    
20250611 141.8 157.0 161.8 333 228 133 15.8 16 5-32 33112244 33222453 54123546 398-486 34    
20250610 129.6 154.0 158.7 258 156 105 7.4 7 5-12 31222122 32332333 52222334 379-461 12    
20250609 120.3 145.1 149.5 300 176 84 14.6 15 9-32 44322223 45322322 55323345 424-563 4    
20250608 115.0 144.3 148.7 263 129 87 13.4 13 7-27 22223434 22223434 32334535 405-477 7    
20250607 120.9 154.0 158.6 234 97 103 16.8 17 7-32 22342244 23442333 43442366 371-479 10    
20250606 124.5 156.3 160.9 257 169 76 6.8 7 5-9 22221222 23322332 42333133 371-544 22    
20250605 127.8 161.0 165.7 234 161 92 11.5 12 6-22 42232322 32343332 54234324 503-692 22    
20250604 130.6 157.3 161.8 203 153 92 25.8 26 5-56 13345543 14445533 25555565 555-816 9 1  
20250603 134.8 164.2 168.9 201 126 95 56.4 56 9-132 67656522 56644*32 68755533 548-694 13 1  
20250602 139.9 176.0 181.1 220 143 103 66.5 66 39-132 55676555 45564454 65566666 588-1012 13 2  
20250601 150.3 192.1 197.5 199 127 97 100.9 101 22-179 56878574 56765563 68887455 662-1129 20    
20250531 164.2 200.0 205.6 238 143 96 15.6 16 7-27 33324234 43324323 54334345 603-795 18 4  
20250530 156.9 184.2 189.3 244 151 107 28.6 29 18-39 44434544 44534433 66444466 658-809 16 3  
20250529 144.8 174.3 179.1 263 168 122 61.5 62 48-94 65556565 65554543 67555655 465-802 9    
20250528 144.3 173.8 178.5 223 150 126 17.3 17 6-32 44332333 36332433 46333454 397-667 22    
20250527 137.1 169.2 173.7 243 150 116 14.5 14 4-32 22123344 22133334 33134454 397-645 12    
20250526 132.9     246 147 113 7.3 7 4-15 11213123 22224322 21113245 388-491 8 2  
20250525 133.3 167.2 171.6 245 149 93 5.6 6 4-7 22212121 22323311 22213232 356-494 19 3 1
20250524 129.7 157.0 161.0 207 149 105 3.9 4 3-5 11111111 21222211 41112123 385-508 18 1  
20250523 121.6 163.4 167.5 240 168 122 7.9 8 3-18 21222312 22212412 43233324 427-581 4    
20250522 120.0 160.5 164.5 218 183 99 5.8 6 4-9 22111221 22212322 43122233 493-610 9    
20250521 119.4 153.3 157.1 203 163 88 12.1 12 5-27 43332122 34442313 54432234 553-699 6 1  

1) Calculated based on data obtained courtesy of the Institute of Ionosphere, Kazakhstan
 2) Solar wind speed is preliminary (* on days with no or too few measurements from SOHO-CELIAS/MTOF PM, measurements from DSCOVR or ACE 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 ## (daily QC). Solar flux measurements that may be invalid are temporarily marked **, while interpolated values are marked # .
5) Suspected faulty measurement or incomplete observation.
6) Sunspot count temporarily using other data sources than SDO.

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

[Solar Terrestrial Activity Report]