Flare Probabilities [%] (00:00 UTC +24H) ?
NOAA C+ M+ X+ Mean ?
MCEVOL ? MCSTAT ? SWPC ? MCEVOL MCSTAT SWPC MCEVOL MCSTAT SWPC C+ M+ X+
13863 37 5 - 8 0 - 4 0 - 21 4 2
13868 4 8 5 0 1 1 0 0 1 6 1 0
13869 79 92 80 16 35 35 0 5 5 84 29 3
13872 66 54 40 21 16 15 0 2 1 53 17 1
13873 95 10 10 0 0 1 0 0 1 38 0 0
13874 41 77 55 2 18 15 0 1 5 58 12 2
13875 26 9 10 2 0 1 0 0 1 15 1 0
13876 39 86 80 15 35 35 0 6 5 69 29 4
13877 4 5 5 0 0 1 0 0 1 4 1 0
13878 75 76 60 15 15 20 0 2 5 70 17 2
13879 - 26 20 - 1 5 - 2 1 23 3 2

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)