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
20170621 73.7 32 25 35 3.3 3 0-7 00011112 11111122 285-368      
20170620 74.4 55 35 34 2.5 2 0-5 01101100 11111100 300-381      
20170619 73.6 53 36 26 4.0 4 0-7 12121000 23222211 354-523      
20170618 74.9 49 30 27 8.5 8 5-18 32222122 33223222 458-566      
20170617 74.8 40 36 28 12.1 12 4-22 43122233 44222333 410-558      
20170616 73.5 55 43 28 21.3 21 3-48 12444435 22434333 347-594      
20170615 77.4 50 36 28 2.9 3 0-5 11011010 11112211 348-441      
20170614 74.1 44 41 11 4.5 4 0-7 01122211 11222311 404-460      
20170613 74.9 47 22 11 5.6 6 2-12 32121210 32132221 442-482      
20170612 75.2 23 11 0 5.8 6 3-9 11112222 11212232 370-541      
20170611 74.3 26 12 0 12.8 13 2-39 01213542 12323532 275-398      
20170610 74.7 70 34 0 2.8 3 2-5 11000001 11112211 276-308      
20170609 73.7 28 0 0 3.1 3 2-9 21000001 21111201 276-301      
20170608 74.0 50 34 12 3.4 3 2-5 11001111 11012211 280-309      
20170607 75.5 35 26 13 3.9 4 2-6 11101102 12211222 286-337 2    
20170606 75.4 49 28 18 4.0 4 3-6 22111111 23112211 303-355      
20170605 79.4 50 35 22 4.6 5 3-9 11112112 01122312 326-367 2    
20170604 77.7 83 39 23 1.9 2 0-3 10000000 11101001 347-439      
20170603 77.9 71 41 22 8.3 8 2-22 00223411 11234421 316-445 3    
20170602 78.2 51 26 19 3.9 4 3-6 21111111 22222211 326-401 4    
20170601 75.7 49 37 18 6.0 6 2-12 01101323 11222323 291-442 7    
20170531 74.1 31 23 11 3.0 3 0-5 01001111 12102212 323-449 3    
20170530 73.7 15 0 0 5.1 5 2-18 23110100 24222211 378-530      
20170529 75.8 41 12 16 9.0 9 2-27 01124321 11224332 322-413      
20170528 78.8 22 17 20 48.6 49 3-132 67654211 66653311 326-413 2    
20170527 81.9 38 26 21 12.9 13 0-67 10001336 10011436 277-421      
20170526 80.2 36 26 22 2.3 2 0-4 10010010 11022311 278-340      
20170525 76.1 60 53 19 2.3 2 0-4 00001101 01112312 309-365      
20170524 77.9 73 49 15 3.3 3 2-5 11111000 22211411 352-483      
20170523 76.0 101 64 47 7.4 7 4-15 23112122 23212322 449-557      
20170522 74.4 81 53 55 8.6 9 6-15 22222233 23133333 478-592      

This page is normally updated once a day by Jan Alvestad. Solar wind speed is preliminary. 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]