From Rennie Yang at Markettells.com:

When the VIX rallies on a day the S&P closes higher, it can be an early warning sign. When it happens again the next day (as occurred Thursday), it’s a short-term sell, targeting an SPX close below the setup day within the next two sessions. This signal has proved correct in 26 out of the last 30 occurrences, or 87% of the time, a significant edge over the 60% random chance. Even when wrong, the S&P was only fractionally higher two sessions later, with the best gain 0.6%…

VIX & SPX Close Higher Two Consecutive Sessions
02/09/12… SPX ???
12/06/11… SPX -1.9% two sessions later
12/21/10… SPX +0.2% two sessions later
10/26/10… SPX -0.3% one session later
04/23/10… SPX -0.4% one session later
03/10/10… SPX +0.4% two sessions later
05/19/08… SPX -0.9% one session later
12/26/07… SPX -1.4% one session later
04/18/07… SPX -0.1% one session later
03/26/07… SPX -0.6% one session later
09/28/06… SPX -0.3% one session later
09/18/06… SPX -0.2% one session later
04/27/06… SPX -0.4% two sessions later
03/16/06… SPX -0.0% two sessions later
11/26/04… SPX -0.3% one session later
02/03/04… SPX -0.8% one session later
12/31/03… SPX -0.3% one session later
09/02/03… SPX +0.6% two sessions later
05/28/03… SPX -0.4% one session later
11/05/02… SPX -1.4% two sessions later
07/31/02… SPX -3.0% one session later
03/24/00… SPX -0.2% one session later
12/30/99… SPX -0.6% two sessions later
09/29/98… SPX -3.1% one session later
09/04/97… SPX -0.2% one session later
06/16/97… SPX -0.5% two sessions later
03/17/97… SPX -0.8% one session later
11/20/96… SPX -0.2% one session later
10/01/96… SPX +0.5% two sessions later
09/04/96… SPX -0.9% one session later

SPY volume increased for the third consecutive session Thursday as the market traded higher, usually a good sign of limited downside potential over the next few sessions. Since 1997, we’ve seen SPY post three higher highs on steadily increasing volume a total of 26 separate times, with only one case leading to a 1%+ drop over the next three sessions…

SPY Three Higher Highs on Increasing Volume
02/09/12… SPY ??? three sessions later
07/22/10… SPY +1.9% three sessions later
02/19/10… SPY -0.3% three sessions later
09/17/09… SPY -0.1% three sessions later
08/06/09… SPY -0.2% three sessions later
04/02/09… SPY -2.1% three sessions later (*)
12/30/08… SPY +4.4% three sessions later
04/11/07… SPY +1.9% three sessions later
11/09/06… SPY +1.0% three sessions later
08/16/06… SPY +0.3% three sessions later
04/18/06… SPY +0.3% three sessions later
12/16/04… SPY -0.4% three sessions later
01/09/04… SPY +1.0% three sessions later
11/14/03… SPY -0.7% three sessions later
10/15/03… SPY +0.1% three sessions later
09/02/03… SPY +0.0% three sessions later
07/09/03… SPY +0.2% three sessions later
12/29/00… SPY +1.8% three sessions later
06/01/00… SPY +0.8% three sessions later
06/30/99… SPY +1.7% three sessions later
11/23/98… SPY +0.1% three sessions later
11/17/98… SPY +2.3% three sessions later
03/23/98… SPY +0.4% three sessions later
02/06/98… SPY +0.5% three sessions later
12/31/97… SPY -0.9% three sessions later
06/09/97… SPY +2.5% three sessions later
04/30/97… SPY +4.1% three sessions later