With elevations exceeding 2000m in height, Greenland's southern tip acts as a large barrier to storm systems traversing the North Atlantic. As a result of the interaction with Greenland, low-pressure systems located in the Irminger Sea, between Iceland and Greenland, often produce strong low-level winds. These westerly low-level winds are known as tip jets and can have magnitudes in excess of 30 m/s. On November 29th, 2004 a lee cyclone in the Irminger Sea produced a tip jet event that was captured by a meteorological buoy positioned off the southwest tip of Greenland. In this presentation, we use the Weather and Forecasting Model (WRF) in combination with the buoy observations to study the system that produced the tip jet as well as the characteristics of the winds themselves.