Solar flares — May 17, 2011
The strongest solar flare in the day
Flare of B5.3 level () — in 20:23
Solar activity index
Value for May 17, 2011 24:00 (end on the day). The maximum value is 10.0

Solar flares in 2 days
Chart of solar activity from May 16, 2011 to May 17, 2011
Time zone — UTC+00 (London)

This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for May 17, 2011
Total number of flares of class C and higher — 6 flares
C type — 0 | M type — 0 | X type — 0
start | maximum | end | region | |
---|---|---|---|---|
B5.3
|
20:15 | 20:23 | 20:38 | 1217 |
B2.7
|
11:27 | 11:44 | 12:02 | — |
B2.2
|
08:58 | 09:05 | 09:09 | — |
B4.1
|
02:35 | 02:43 | 02:48 | 1214 |
B2.6
|
01:40 | 01:43 | 01:48 | 1208 |
B3.5
|
01:04 | 01:09 | 01:12 | 1214 |