Flare Probabilities [%] (00:00 UTC +24H) ?
NOAA C+ M+ X+ Mean ?
MCEVOL ? MCSTAT ? SWPC ? MCEVOL MCSTAT SWPC MCEVOL MCSTAT SWPC C+ M+ X+
13860 6 14 0 0 1 0 0 0 0 7 0 0
13863 31 27 15 3 3 1 0 0 1 24 2 0
13865 9 15 15 0 1 1 0 0 1 13 1 0
13866 0 9 10 0 0 1 0 0 1 6 0 0
13868 4 8 10 0 1 1 0 0 1 8 1 0
13869 63 76 60 9 15 15 0 2 5 66 13 2
13870 - 5 - - 0 - - 0 - 5 0 0
13871 - 15 5 - 1 1 - 0 1 10 1 0
13872 - 65 60 - 6 15 - 3 5 63 10 4
13873 - 57 40 - 6 10 - 0 1 49 8 1

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)