Flare Probabilities [%] (00:00 UTC +24H) ?
NOAA C+ M+ X+ Mean ?
MCEVOL ? MCSTAT ? MCEVOL MCSTAT MCEVOL MCSTAT C+ M+ X+
13869 67 57 15 6 2 0 62 10 1
13871 27 33 3 4 0 0 30 4 0
13872 7 15 0 1 0 0 11 1 0
13873 7 15 0 1 0 0 11 1 0
13875 - 35 - 3 - 0 35 3 0
13876 27 33 3 4 0 0 30 4 0
13878 67 58 10 10 5 2 63 10 4
13879 12 19 0 1 0 0 15 1 0
13881 33 57 1 6 0 0 45 4 0
13883 34 64 5 11 0 1 49 8 1
13884 7 15 0 2 0 0 11 1 0
13885 - 22 - 1 - 0 22 1 0
13886 - 33 - 4 - 0 33 4 0

SolarMonitor's flare prediction system's probabilities are calculated using the NOAA Space Weather Predicion Centre's McIntosh classifications. There are two methods, MCSTAT and MCEVOL, that use sunspot-group McIntosh classifications and Poisson statistics to calculate flaring probabilities valid for a 24-hr period starting at 00:00 UTC. The flaring probabilities are calculated using historical data from solar cycles 23 and 24 (1996-2019).

MCSTAT (McIntosh Statistics): Uses the point-in-time McIntosh classification to calculate Poisson flaring probabilities. Details about the method [1] and forecast verification testing [2] can be found in the following papers:

[1] Gallagher, P. T., Moon, Y.-J., Wang, H., Solar Physics, 209, 171, (2002)
[2] Bloomfield et al., 2012, The Astrophysical Journal Letters, 747, L41

MCEVOL (McIntosh Evolution): Uses a combination of previous and current McIntosh classification to calculate Poisson flaring probabilities. Details about the method and flaring rate statistics can be found in the following:

[1] McCloskey, A.E., Gallagher, P.T. & Bloomfield, D.S., Solar Physics, 291, 1711, (2016)