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
20180623 77.1 37 30 34 15.0 15 6-22 23244334 24233324 299-474      
20180622 80.3 48 35 41 3.1 3 2-5 01100111 11211211 297-362      
20180621 81.5 97 35 53 2.3 2 0-3 11110000 11121211 342-404 1    
20180620 82.1 74 52 54 4.4 4 3-7 12221111 12331211 391-453      
20180619 76.6 73 57 41 5.0 5 3-9 12221111 21332111 431-569      
20180618 73.7 65 29 28 15.3 15 6-32 43333222 55443222 344-550      
20180617 72.3 50 39 15 3.8 4 2-6 11100122 21211322 273-360      
20180616 70.5 37 15 13 2.1 2 0-4 01000011 11111211 281-307      
20180615 70.6 21 15 13 3.1 3 2-4 11110111 21111212 284-318      
20180614 72.4 22 15 16 4.0 4 3-6 21111111 22211312 284-331      
20180613 70.8 23 17 16 3.0 3 0-7 01100012 12122322 276-298      
20180612 70.3 32 15 12 2.8 3 0-5 11000001 22111312 275-300      
20180611 69.9 0 0 0 3.0 3 2-5 10001101 10111211 275-309      
20180610 70.2 0 0 0 2.0 2 0-4 01000110 12102211 282-335      
20180609 66.8 0 0 0 3.1 3 2-5 10110111 20122221 285-334      
20180608 68.2 0 0 0 3.3 3 0-6 12021000 13123212 321-361      
20180607 69.3 0 0 0 5.0 5 2-12 31110112 22212312 331-380      
20180606 71.1 22 22 0 5.1 5 2-12 11001232 12012322 350-388 1    
20180605 71.3 0 0 0 5.1 5 3-6 22112121 22222312 352-444      
20180604 70.5 13 0 11 4.0 4 2-5 11110111 21111322 450-613      
20180603 73.6 14 11 16 7.6 8 4-12 32123222 32132322 557-709      
20180602 74.4 36 14 20 13.6 14 6-22 24322244 34333233 557-647      
20180601 74.8 50 25 22 22.4 22 9-39 34445322 34534332 450-709      
20180531 76.8 36 22 21 11.6 12 3-32 11112443 22121334 294-476      
20180530 75.3 34 20 18 3.5 4 2-6 00101122 11212322 304-338      
20180529 74.9 34 21 22 3.4 3 2-6 12111110 22111212 333-374      
20180528 76.9 42 29 20 3.8 4 2-6 01112210 21212312 344-373 2    
20180527 74.6 25 17 27 3.4 3 2-5 11011011 12121212 305-371      
20180526 72.9 39 36 26 2.6 3 0-5 01001011 11012322 287-348      
20180525 75.7 47 30 32 2.8 3 2-5 10001000 21112111 328-376      
20180524 73.6 61 41 39 3.0 3 2-5 11001101 22112221 360-466      

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]