If the weather forecast on Earth is difficult, think about what the Sun will look like. As some physicists said they could predict the state of the Sun before a week, and it seems that the prediction was quite correct.
The day of the announcement was March 25. The day was intentionally chosen by an eclipse and in the eclipse, when the Sun is hidden, the crown looks cleaner. In this way, they were able to compare the forecast with the real chorus of the Sun, the one received by the SOHO observatory. And, as we have said, the images were very similar, indicating that they came close in the ad.
In view of the result, the model used for prediction is better than the one used so far and shows that they increasingly know better the behavior of the Solar Crown. This is important because solar storms destroy satellites.