Short term breakout?

While all my long term technical models are still bearish (chart1), I suspect that the SP500 made a short term bullish breakout yesterday.
As you can see on this daily chart, the index was able to rise above an horizontal resistance and is now close to break the downtrend active since May 08.
Today will be an important day as the DJ Euro Stoxx 50 will try to challenge the 3400 level.