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
20171019 73.4 0 0 0 9.5 10 6-15 32222322 33433422 344-506      
20171018 73.2 14 11 0 3.9 4 0-9 11111012 11222212 340-447      
20171017 70.3 0 0 0 4.1 4 3-6 11112111 21121101 424-510      
20171016 70.9 12 12 0 6.6 7 4-12 23211122 13222121 468-560      
20171015 70.3 14 12 12 20.8 21 4-39 45344331 45354321 544-687      
20171014 69.0 0 0 0 26.9 27 12-39 54554433 54553333 568-775      
20171013 69.7 24 22 0 31.9 32 6-56 34235455 35246545 463-757      
20171012 70.2 11 11 0 25.6 26 9-48 53444424 44445324 461-599      
20171011 69.6 0 0 0 26.5 26 18-39 34544543 33544433 350-558      
20171010 70.9 22 11 0 2.0 2 0-7 00000012 00011212 284-334      
20171009 72.3 0 0 0 1.5 2 0-6 20000000 20001220 310-407      
20171008 76.7 11 0 0 2.9 3 0-7 12000001 12001211 378-451      
20171007 79.6 12 11 11 2.8 3 0-5 10000111 11012322 352-460      
20171006 84.1 15 13 22 6.8 7 4-12 32112212 23213212 387-464      
20171005 84.7 41 26 26 5.6 6 0-18 31000113 30101223 354-454 1    
20171004 86.8 52 29 27 4.3 4 0-9 22001012 13001212 348-374      
20171003 86.4 75 30 25 5.5 6 0-12 23310001 23421121 349-471      
20171002 86.0 59 26 25 5.3 5 2-15 13221000 24332210 351-457      
20171001 85.7 56 39 34 10.4 10 6-18 32322323 32332322 406-519      
20170930 89.4 48 37 38 14.1 14 7-27 23323423 23333323 447-558      
20170929 89.7 69 56 39 11.0 11 6-18 32233223 33424312 536-632      
20170928 90.9 74 46 40 51.3 51 22-111 56754445 56553334 569-768      
20170927 91.0 57 41 35 37.3 37 12-94 33544466 32443354 318-710 1    
20170926 90.7 63 53 40 3.1 3 0-7 11110002 00211212 275-411 1    
20170925 89.9 74 49 36 4.1 4 2-9 22110000 32111210 344-464      
20170924 86.9 70 40 22 5.9 6 3-12 12111223 12122222 318-452      
20170923 81.2 44 24 12 4.4 4 3-9 11111121 12201221 337-387      
20170922 77.5 29 23 22 5.1 5 2-9 11101122 11301212 333-391      
20170921 73.0 50 33 22 5.1 5 2-9 11212012 11322211 352-459      
20170920 73.9 37 33 22 8.5 8 3-18 33222121 34332221 433-509      

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]