Solar and geomagnetic data

Date Solar flux density
2.8 GHz
Sunspot number Planetary A index
(3)
K indices
(3-hour intervals) (3)
Solar wind
speed range
(km/s)
(SOHO)(2)
Number
of flares
DRAO (4) Almaty (1)
(averages)
STAR
(SDO)
NOAA STAR
ap avg
Pots-
dam
WDC
Daily
ap range
Planetary
(WDC)
Boulder Andenes
(Tromsų)
C M X
Measured
(20h UT)
(02-11 UT) 2K 1K
  1AU
20231231 146.2     202 104 55 2.6 3 0-5 01000111 01102223 00000223 283-370 29 1 1
20231230 139.7     127 83 48 4.0 4 0-9 12111110 12112221 01000000 318-415 24    
20231229 142.9     198 127 92 5.8 6 3-9 11122112 11232222 11011123 321-466 18    
20231228 146.7     182 120 83 1.8 2 0-6 00100102 00111212 00000000 318-399 4    
20231227 149.4     216 126 78 4.1 4 2-7 22110111 11221211 22010010 378-520 7    
20231226 154.2     199 126 94 4.4 4 2-7 01121111 01222321 01010011 382-586 13    
20231225 166.7     236 154 98 2.8 3 2-5 01000110 01101221 01100020 372-443 16    
20231224 183.4     285 193 113 9.0 9 4-15 33332111 22332221 44322222 323-489 16 3  
20231223 174.2     289 183 123 5.0 5 2-9 01212211 00322321 20012303 310-405 13    
20231222 186.7     300 209 157 2.6 3 0-5 01110000 01111211 01100012 306-372 21    
20231221 193.6     336 249 138 4.3 4 2-12 30021100 21131211 51010220 310-455 24 2  
20231220 195.3     358 266 133 10.3 10 3-27 43222211 43232221 44323433 412-632 27    
20231219 179.3     364 248 144 10.1 10 5-22 43221223 34212222 55322225 618-755 12    
20231218 161.4     349 227 137 26.3 26 9-67 24643335 23554333 32443355 490-669 27    
20231217 154.6     287 224 129 32.9 33 9-56 45455523 34455633 45645433 440-553 25 1  
20231216 149.0     272 168 163 14.0 14 3-27 44323133 34222222 55411054 409-520 29    
20231215 144.3     233 162 130 10.6 11 2-18 11033333 11133422 33044364 323-477 25 3  
20231214 148.0     191 130 126 14.6 15 4-32 44333212 43343312 56443343 320-415 23 4 1
20231213 134.8     192 148 114 6.8 7 3-12 12111322 12222322 22111345 333-399 15    
20231212 126.2     189 141 80 7.4 7 0-18 01113321 12214431 00104431 297-415 17    
20231211 125.9     157 93 87 1.0 1 0-4 01000000 *****100 00000011 297-381 20    
20231210 126.6     233 186 120 3.1 3 2-5 11101111 ******** 10100232 338-390 22 2  
20231209 127.9     241 188 125 1.3 1 0-3 00100100 0000121* 00100220 358-415 28 2  
20231208 132.6     255 179 125 4.3 4 2-7 10111221 00111221 30010343 401-498 30 1  
20231207 134.6 143.1 138.9 247 172 121 4.5 4 3-7 11111122 11112221 31111145 489-620 15    
20231206 129.9 146.9 142.6 238 185 125 9.9 10 6-15 32223322 32324322 44333433 541-676 18 2  
20231205 141.6 162.3 157.6 274 196 133 13.9 14 9-18 33333322 33234322 53323436 518-674 35 3  
20231204 137.8     288 233 113 8.8 9 4-12 23333211 22322221 44223232 514-674 13    
20231203 139.2 154.6 150.2 212 161 107 10.0 10 6-15 23323322 23322322 22332334 390-562 11    
20231202 148.2 166.3 161.6 178 128 92 13.4 13 3-56 54111111 44212221 55211101 393-761 18    
20231201 162.0 172.3 166.5 226 160 140 51.9 52 22-111 44476555 43366444 65465565 445-586 20 2  

1) Data obtained courtesy of the Institute of Ionosphere, Kazakhstan
2) Solar wind speed is preliminary (* on days with no or too few measurements from SOHO-CELIAS/MTOF PM, measurements from DSCOVR or ACE are used)
3) Ap and Kp values in red are based on the definitive Potsdam WDC data.
4) Flare enhanced measurements and measurements that most likely are invalid are replaced by other same day measurements ## (daily QC). Solar flux measurements that may be invalid are temporarily marked ** , while interpolated values are marked # .

This page is normally updated once a day by Jan Alvestad.

[Solar Terrestrial Activity Report]