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Geomagnetic and Solar Indices -- Updated Aug 21 1953 UTC
Geomagnetic Indices
Station August 20
3-hour K-indices
A-index August 21
3-hour K-indices
Running
A-index
  00-03 03-06 06-09 09-12 12-15 15-18 18-21 21-24   00-03 03-06 06-09 09-12 12-15 15-18 18-21 21-24  
Fredericksburg 2 1 1 2 3 1 2 2 7 3 3 2 3 3 1 * * 11
Boulder 2 1 1 1 2 2 2 2 6 3 3 2 4 3 2 * * 13
College 1 1 1 1 1 1 2 1 4 2 3 4 6 5 4 * * 27
Planetary 2 1 1 2 2 1 1 2 6 3 3 2 2 2 1 * * 9

Solar Radio Flux
Aug 21
Station / CMP
245 410 610 1415 2695 4995 8800 15400
Learmonth / 0500 UTC 28 40 64 97 123 164 302 545
San Vito / 1200 UTC 21 * * 108 125 163 275 592
Sagamore Hill / 1700 UTC 35 41 64 102 125 168 288 560
Palehua / 2300 UTC * * * * * * * *
Penticton 10.7cm (2800 MHz) Morning     130 Noon     * Afternoon     *

CMP = Central Meridian Passage, time of measurement near local noon


Daily Solar Indices
  Penticton 10.7cm Solar Radio Flux (2800 MHz) GOES X-ray
  Morning 1800 UTC Noon 2000 UTC Afternoon 2200 UTC 90 Day Mean background flux
Aug 20 115 118 120 126 B3.8

  SWO Sunspot
Number
Sunspot Area
10E-6 Hemis.
New Regions Spotted Regions X-ray Events
C / M / X
Optical Flares
S / 1 / 2 / 3 / 4
Radio Bursts
10 cm tenflares
Radio Sweeps
Type II / IV
Aug 21 128 450 1 7 6/1/0 4/0/0/0/0 0 0/0
Aug 20 89 320 1 6 9/0/0 7/1/0/0/0 0 1/0

Related online data
Daily Geomagnetic Indices last 30 days current quarter since 1994
Daily Solar Indices last 30 days current quarter since 1994
Available A and K indices last 2 days last 7 days last 2 years
Noon Solar Radio Flux Values last 2 days last 7 days last 45 days
Solar Event Reports Today or Yesterday last 60 days last 3 years
Radio Burst Event Reports last 45 days    

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