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Geomagnetic and Solar Indices -- Updated May 21 1638 UTC
Geomagnetic Indices
Station May 20
3-hour K-indices		 A-index May 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 0 1 3 2 2 2 6 2 2 2 2 3 * * * 8
Boulder 3 1 0 1 3 2 2 3 8 2 3 3 2 2 * * * 10
College 2 2 0 2 2 2 2 1 6 2 1 4 1 1 * * * 8
Planetary 3 2 1 1 2 2 2 2 7 2 2 2 1 1 * * * 6
Solar Radio Flux
May 21
Station / CMP		 245 410 610 1415 2695 4995 8800 15400
Learmonth / 0500 UTC 19 40 70 108 125 166 301 595
San Vito / 1200 UTC 19 * * 112 123 177 284 548
Sagamore Hill / 1700 UTC * * * * * * * *
Palehua / 2300 UTC * * * * * * * *
Penticton 10.7cm (2800 MHz) Morning     * 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
May 20 134 132 131 121 B7.0

  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
May 21 126 620 2 7 1/0/0 7/0/0/0/0 0 0/0
May 20 113 590 2 7 7/1/0 21/1/0/0/0 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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