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
20190420 69.9 12 11 11 3.5 4 2-5 11011111 11012211 280-352      
20190419 72.7 25 12 23 4.0 4 2-6 00111121 11221221 292-363      
20190418 74.6 30 26 23 1.5 2 0-3 00001111 00002321 277-348      
20190417 76.1 30 26 24 3.0 3 0-6 10000121 11011321 306-345      
20190416 74.2 26 12 11 5.6 6 2-12 22311011 22412201 346-432      
20190415 75.4 40 12 11 6.3 6 4-9 11221122 11322322 288-356      
20190414 75.4 38 15 11 3.6 4 2-6 02200102 03211201 284-353      
20190413 77.9 30 22 14 7.1 7 2-15 33101122 23212211 346-448      
20190412 77.3 24 15 14 7.1 7 4-15 32112122 31211222 386-447      
20190411 78.5 17 14 13 5.9 6 2-12 13222201 ******** 359-448      
20190410 78.1 18 15 13 14.3 14 4-27 44312331 444123** 421-483      
20190409 79.0 17 14 12 8.4 8 5-18 32221222 42331222 350-465      
20190408 78.6 18 13 12 12.1 12 7-18 33223322 24222322 348-483      
20190407 76.5 14 12 11 4.5 4 2-7 12012112 02113202 346-445      
20190406 73.6 0 0 0 6.1 6 3-12 23211122 33221222 412-514      
20190405 71.7 16 12 0 11.6 12 6-18 33223233 33333332 446-551      
20190404 70.3 20 13 0 9.8 10 4-18 32123331 22233321 346-473      
20190403 70.6 37 19 17 10.5 10 6-22 24322223 24334313 346-460      
20190402 70.8 28 20 18 5.8 6 2-15 10101133 00102323 346-405      
20190401 69.3 33 24 17 6.5 6 0-15 22232210 21333211 353-422      
20190331 69.5 21 16 14 9.0 9 3-22 24312221 24312222 346-437      
20190330 69.4 12 0 0 3.1 3 2-7 21001000 21101101 345-443      
20190329 68.8 0 0 0 6.3 6 4-7 22221221 12331212 387-553      
20190328 68.4 0 0 0 9.0 9 3-15 12223223 13423222 350-533      
20190327 68.9 12 0 0 6.4 6 3-12 22322121 22332321 328-352      
20190326 69.0 0 0 0 4.4 4 2-9 22001002 22001212 335-361      
20190325 71.2 0 0 0 4.5 4 2-9 21101102 22102212 313-424      
20190324 75.4 14 11 11 1.1 1 0-7 00000002 00102212 271-324      
20190323 79.4 35 19 22 0.8 1 0-4 00010000 00021211 270-329      
20190322 82.4 50 34 27 0.9 1 0-3 00100000 00211210 280-346 6    
20190321 80.1 44 32 49 1.5 2 0-4 01000000 02111120 308-359 5    

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]