Flare Probabilities [%] (00:00 UTC +24H) ?
NOAA C+ M+ X+ Mean ?
MCEVOL ? MCSTAT ? SWPC ? MCEVOL MCSTAT SWPC MCEVOL MCSTAT SWPC C+ M+ X+
13901 28 15 10 4 1 1 0 0 1 18 2 0
13902 4 8 5 0 1 1 0 0 1 6 1 0
13903 27 33 0 3 4 0 0 0 0 20 2 0
13905 70 76 65 15 15 25 1 2 5 70 18 3
13906 86 76 80 42 15 35 8 2 5 81 31 5
13907 13 33 50 0 4 15 0 0 1 32 6 0
13908 4 5 10 0 0 1 0 0 1 6 1 0
13909 8 9 10 0 0 1 0 0 1 9 1 0
13910 - 54 40 - 16 15 - 2 5 47 15 3
13911 - 14 15 - 1 1 - 0 1 15 1 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)