Alpari (US), LLC is dually registered with the CFTC as a FCM and RFED and is a member of the NFA. NFA Member ID: 0379678.
The Engulfing pattern is formed when:

Bullish and Bearish Engulfing Patterns
There is an exception for the third point when the real body of the first candle is too short so it is considered to be a doji. This means that after a long-term downtrend tiny white real body is engulfed by a tall white next candle's real body, and after the long term uptrend tiny black real body is engulfed by a tall black real body of the second candle.

Bearish Engulfing Pattern

Bullish Engulfing Pattern
Factors that increase the importance of Bullish and Bearish Engulfing Patterns: