Solar flares — Jul 18, 2001
The strongest solar flare in the day
      
      Flare of C5.4 level (normal) — in 22:41
    
      Solar activity index
Value for Jul 18, 2001 24:00 (end on the day). The maximum value is 10.0

Solar flares in 2 days
Chart of solar activity from Jul 17, 2001 to Jul 18, 2001
Time zone — UTC+01 (London) - summer time

          This chart in PNG format — high resolution
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  List of solar flares for Jul 18, 2001
Total number of flares of class C and higher — 4 flares
C type — 4 | M type — 0 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
| 
             
              
              C5.4
             
           | 
          22:35 | 22:41 | 22:46 | 9546 | 
| 
             
              
              C2.4
             
           | 
          21:54 | 22:02 | 22:09 | — | 
| 
             
              
              C2.0
             
           | 
          21:32 | 21:37 | 21:44 | — | 
| 
             
              
              C3.0
             
           | 
          00:06 | 00:11 | 00:14 | — | 
