After, Spaulding et al. (1993) the simulation results also showed that much more horizontal spreading took place during the holding conditions in February as was typically noticed. The spill moved northwest due to the southeast wind front which caused the spill to impact the Saudi coast from latitude 28 40′–27 20′ from the period of February 11 to March 18, 1991. Al-Rabeh et al. (1992) reported that the oil spill impacted the Saudi shoreline from latitude 28 44′ to 27. The MIKE3-SA results showed that the impacted region along the Saudi coast was almost similar to the actual situation. The extent of shoreline impact was less in the simulation than it was in real life. This is probably due to the difference in the wind data combination of magnitude, direction, and duration from the real data. The comparison results proved that the southeastern wind front has affected the trajectory in a typical manner to the actual trajectory and that the spill holding and backward movement was the cause for the spill to reach the Saudi mainland coast. The findings revealed that in case of two opposite wind fronts facing each other, the oil tends to spread horizontally much faster and covers larger areas in that region. The results reflect the effect of the southeastern wind front on the Al-Ahmadi oil spill trajectory. The model correctly