Flare Probabilities [%] (00:00 UTC +24H) ?
NOAA C+ M+ X+ Mean ?
MCEVOL ? MCSTAT ? SWPC ? MCEVOL MCSTAT SWPC MCEVOL MCSTAT SWPC C+ M+ X+
13893 4 10 5 0 0 1 0 0 1 6 0 0
13896 31 27 10 3 3 1 0 0 1 23 2 0
13898 17 33 20 2 4 5 0 0 1 23 4 0
13899 9 15 5 0 1 1 0 0 1 10 1 0
13900 12 9 20 0 0 5 0 0 1 14 2 0
13901 33 57 35 1 6 10 0 0 1 42 6 0
13902 10 8 5 1 1 1 0 0 1 8 1 0
13903 - 55 40 - 4 10 - 0 1 48 7 0
13904 - 22 25 - 2 5 - 0 1 24 4 0
13905 - 33 40 - 4 10 - 0 1 37 7 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)