Solar Flare Watch
🌐 English

Home › Flare history › 2011

M5.3 solar flare on 2011-03-08

ClassM5.3NOAA report
Peak10:442011-03-08 UTC
Duration20 min
Peak flux5.3e-05W/m²
ComparisonValue
Rank in year18 / 1319
Other M/X flares that day4
M/X flares that month22
Solar cycleCycle 24
Active regionAR 11165 (31 flares)

Compared with the strongest flares of 2011

Other M/X flares that day

DateBeginPeakMinClassLocationRegion
02:2402:298M1.3–11165
03:3703:5843M1.5–11171
18:0818:2833M4.4–11165
19:4620:1693M1.4–11165
All times UTC. Until June 2017 classes are NOAA's reports of the time (GOES-15 and earlier included a 0.7 scaling factor); later classes come from calibrated GOES-16/18 data, so the same flare reads about 1.4× larger. Do not compare the two periods directly.

← M6.6 2011-02-18X1.5 2011-03-09 →

About this page

A M5.3 flare that began 2011-03-08 10:35 UTC; No. 18 of 1,319 C-class-or-larger flares in 2011.