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
20190915 67.7 12 11 0 7.8 8 4-15 13221223 23222222 389-475      
20190914 68.6 0 0 0 5.4 5 2-7 02221122 02321223 417-507      
20190913 68.3 23 11 0 7.1 7 4-12 23322111 23312221 440-599      
20190912 69.4 0 0 0 5.3 5 4-6 21221211 11342222 354-479      
20190911 68.1 0 0 0 4.4 4 3-7 11221111 12320211 367-463      
20190910 70.0 11 11 0 3.9 4 0-7 11122000 22123211 454-553      
20190909 68.8 0 0 0 12.8 13 6-18 32332322 32442312 384-554      
20190908 67.5 0 0 0 8.1 8 5-15 22221223 13322224 385-469      
20190907 69.7 0 0 0 6.1 6 3-9 12212212 11322212 409-496      
20190906 68.9 12 11 0 7.9 8 2-22 24231021 14341111 453-565      
20190905 68.3 23 11 0 13.4 13 5-32 44331122 43342222 455-555      
20190904 68.6 11 0 0 10.1 10 7-15 33322232 33332322 421-562      
20190903 68.6 0 0 0 8.6 9 5-18 33222122 43332222 556-715      
20190902 68.8 13 13 12 21.4 21 7-48 54432343 55422332 589-768      
20190901 67.1 20 17 12 42.1 42 27-56 55555445 55656445 610-872      
20190831 66.4 11 0 0 37.8 38 22-67 45456444 45455434 557-770      
20190830 66.5 12 0 0 9.1 9 3-18 11113333 11223433 355-541      
20190829 65.9 0 0 0 2.8 3 0-6 10012111 00012210 345-428      
20190828 65.9 0 0 0 4.1 4 2-7 22111110 22211310 419-534      
20190827 66.1 0 0 0 9.8 10 6-15 33232222 34333322 333-606      
20190826 65.8 0 0 0 5.0 5 2-9 10121112 21131211 290-385      
20190825 66.0 0 0 0 3.1 3 2-6 11200001 22311211 288-392      
20190824 66.3 12 0 0 3.5 4 0-7 21010110 22121221 344-364      
20190823 66.5 0 0 0 3.5 4 2-6 12110011 13111211 345-398      
20190822 65.7 0 0 0 4.9 5 3-9 11111122 21221322 344-352      
20190821 66.8 0 0 0 3.6 4 2-5 11101110 22211211 344-418      
20190820 67.3 12 0 0 4.0 4 3-6 21111111 22112322 308-442      
20190819 67.7 23 0 0 3.0 3 2-4 11011101 12122421 306-363      
20190818 67.5 0 0 0 5.3 5 3-12 32111111 22222311 341-381      
20190817 68.0 0 0 0 3.8 4 2-7 12111100 12111112 346-360      
20190816 67.5 11 0 0 4.0 4 2-7 11121110 21232311 348-452      

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]