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
20181018 69.5 26 22 0 0.8 1 0-2 00000000 01100110 293-369      
20181017 70.0 0 0 11 2.3 2 0-6 01200000 01201210 352-485      
20181016 69.7 28 11 0 4.3 4 2-7 20121201 21122221 449-580      
20181015 71.0 22 22 11 8.4 8 6-15 32222222 31122322 551-669      
20181014 71.5 37 34 22 5.1 5 4-6 21121112 21122221 454-587      
20181013 72.4 46 44 22 12.0 12 2-27 12101444 13211434 326-522      
20181012 71.6 26 23 11 4.4 4 2-6 12110111 12322211 350-445      
20181011 70.9 24 11 0 7.9 8 5-15 33212221 32322221 445-510      
20181010 69.8 12 0 0 14.0 14 3-39 31223353 31134432 456-553      
20181009 69.5 25 12 0 13.9 14 9-18 32333323 23443832 522-553      
20181008 68.8 0 0 0 17.5 18 5-32 44324321 55433322 519-574      
20181007 69.5 12 0 0 19.4 19 3-48 11124554 00234543 330-596      
20181006 68.6 0 0 0 3.9 4 0-12 31110000 31231220 344-351      
20181005 68.7 0 0 0 7.5 8 3-15 32222112 23222212 349-424      
20181004 67.2 0 0 11 3.4 3 2-5 10001111 11001211 345-594      
20181003 68.4 24 11 12 4.6 5 3-9 11121122 01111222 347-567      
20181002 67.0 15 13 14 7.4 7 2-22 43211010 42211120 409-540      
20181001 70.1 18 15 14 7.5 8 0-22 01114222 02233322 346-530      
20180930 68.3 19 15 14 4.6 5 2-9 12011022 12012121 362-518      
20180929 68.7 25 17 13 8.9 9 4-18 23222132 23311212 346-519      
20180928 69.1 0 0 0 7.3 7 2-15 33310012 23311212 345-448      
20180927 67.1 0 0 0 5.5 6 2-9 12222102 13332212 381-459      
20180926 69.0 0 0 0 6.6 7 4-12 12212312 13322322 421-465      
20180925 67.6 0 0 0 9.8 10 4-15 23123233 23233322 393-455      
20180924 68.6 0 0 0 5.9 6 3-9 22121122 23322112 379-459      
20180923 68.4 0 0 0 9.6 10 6-18 33222222 53233212 397-497      
20180922 67.9 0 0 0 26.6 27 12-39 54444344 42**4333 342-605      
20180921 66.9 11 0 0 6.6 6 0-32 01011114 ******07 322-407      
20180920 66.6 0 0 0 1.1 1 0-3 00100000 *****21* 336-412      
20180919 67.9 0 0 0 3.1 3 0-9 12100100 12211010 360-453      

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]