Michael Mozina has a rather checkered record of understanding physics and mathematics. Thus his opinion that the NOAA forecasts are inaccurate when compared to his trivial predictions is very suspect. This is especially true since:
[*]He insists on looking at one daily forecast at a time.
Er, no. I already explained to you that I have been playing along now for a week. When you look at how NOAA actually did last week, it's no better than flipping a coin.
That is quite ignorant. The forecasts give probablilties of at least one flare in a day. It is a probabliity.
There have been something like 7 or 8 C class flares in the past couple of days and yet the highest NOAA ever rated 123 was 60 percent for even *ONE* C class flare. At least I understood it was a 'growing' process that would lead to NUMEROUS C class flares at a minimum. It's still ultimately just a "mathematical guess". Because solar events can happen so rapidly, I'm not convinced that a 24 hour "prediction" is even all that useful. It's always going to be a "guess", because filament eruptions tend to happen over a few hour period of time, and flares tend to build over hours when the area is "active" and there is 'interaction' between two powerful active regions. Any real "prediction" of solar events would necessarily need to some ability to adapt over a time line of less than a 24 hour period to be entirely "accurate" IMO.
There will not be X% of a flare on a day. The proper procedure is to compare days with the same probability and see how many days produced at least 1 flare.
Ya, but when you add up all the percentages for several days last week, the "odds" of a C flare was over 100 percent from SOME active region. None the less, no C class flares occurred. Likewise their "odds" for even a C flare from 123 was never greater than 60 percent, even *AFTER* it erupted a number of times.
He tends to say that the NOAA forecasts fails X% of the time when there is a flare. This betrays an ignorance of the fact that the prediction is for at least one flare.
It's particularly annoying how you *IGNORE* those days where the forecast called for 100 percent plus likelihood of a flare and nothing occurred for two full days of plus 100 percent odds of a flare. What real "accuracy' did we see this week from that method? Honestly RC, it was no better than flipping a coin.
He tends to dismiss the prediction when there are multiple flares.
No, I think it would be useful in fact to have some PREDICTION about the number of flares as well. For instance, it was in fact very clear to me that 123 and 121 were going to "interact" to produce a series of C class flares. The two of them were almost a "classic" scenario of two active region interaction that almost always involves *MULTIPLE* C class flares. You're the one that was trying to take away my M and 4 C Class flares in my 48 hour window.
Th data shows that NOAA tended to overpredict M and X flares (C flares are not analysed) between 1986 and 2006. IMO this is a good thing - it is better to be on the high side rather than predict lower activity than happens.
IMO a 'better" kind of 'prediction' would be like the kind I gave you for 1121 (can't recall it's previous number) on the last rotation cycle, and the kind of information I gave you on this rotation cycle. I gave you a 20 minute heads up on that M class flare last time. I had to wait around for DAYS to be sure that it was actually going to happen and to be anywhere close to precise about the timing. Frankly, I cut it closer than I meant to, but IMO that's a more "useful" prediction.
I also talked about how 123 was "building" and the importance of it's proximity to 121. That "combo" of events is "typical" prior to active region interactions that often produce C and M class flares.
The hardest thing for me to "quantify" in my own little "technique" is the distinction between X,M and C class flares. I can pretty much predict the timing of C class flares (I think better than NOAA if we were to put me to the test), but I have a hard time distinguishing when a C class flare might be the outcome of the interaction, and when an M class flare might be the result. In some cases (like last time) there is a "concentration" of energy that is more apt to produce "large" flares IMO, but that isn't typical of most active region interactions. Most of them occur like 123 and 121 did on this rotation cycles. They generate a lot of activity over a short period of time (typically days at best) and then they tend to "settle down". It's like a couple of brothers fighting over sharing a bedroom for a couple of days, and then "working it out". The EM reconfigurations take place over time and then everything settles down for a bit.
NOAA's method does actually incorporate features that could and probably do recognize the signs of multiple day eruptions, but since they are based on sunspot configurations, they tend to be about 18 hours behind the curve IMO. The active regions can become very active for many hours prior to anything appearing on the surface of the photosphere. 123 was active for almost a day before I saw any activity in 1600A.