https://www.swpc.noaa.gov/communities/space-weather-enthusia...
Here is the SWPC forecast [0]
Time_UTC,Nov_12,Nov_13,Nov_14
00-03UT,8.67 (G4),6.67 (G3),4.67 (G1)
03-06UT,8.33 (G4),6.33 (G2),4.00
06-09UT,7.00 (G3),6.00 (G2),3.33
09-12UT,7.00 (G3),4.67 (G1),3.67
12-15UT,6.00 (G2),4.00,3.33
15-18UT,5.67 (G2),3.33,3.00
18-21UT,7.67 (G4),4.33,3.00
21-00UT,6.00 (G2),4.67 (G1),3.33
So I guess 18-21UTC today it'll get around 7.7kP, but that's lower than what hit this morning, when I'd expect X5.1 to be larger? Is that how I should interpret this?
[0] https://www.swpc.noaa.gov/communities/space-weather-enthusia...
However, predicting the effects of solar flares is very difficult. Not only does the particle stream have to hit the Earth, it has to couple with the magnetic field.
Large flares can cause small events on Earth and vice versa.