A component of the Ichimoku Kinko Hyo indicator that is used to measure momentum and future areas of support and resistance. Senkou span A is always plotted alongside Senkou span B and the area between the two lines is filled with shaded indicator lines, also known as the cloud, which is used by traders to predict levels of future support/resistance. Senkou span A is calculated by using the following formula:



The trend is deemed to be downward when Senkou span A is located below senkou span B. In practice, the indicator is most commonly used to predict the reversal of a current trend when the senkou spans cross over each other.