The photo (below) is of the rain curtain associated with the downburst at it approached Reagan National Airport. In a downburst, high winds begin as the rain arrives. Trees were toppled minutes before it hit the ground at Anacostia about two minutes before this screen capture.
Dave's video (above) depicts the missed approach. The jet (circled) is making final approach to Runway 19. The leading edge of the downburst is beginning to move across the runways.
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The plane, now inside the downburst, makes a missed approach and starts to climb out.
The plane is now behind the building in the background. I enhanced the contrast of the rain.
The plane was safely on its way. The crew made an excellent decision not to land.
Here is the wind data from the Terminal Doppler Weather Radar at the time of the missed approach. "R" is Reagan National. The downburst winds were moving across the runways as the missed approach occurred.
FYI: Here is the violent downburst at Suitland at 5:33pm. There was at least 80 knots of wind shear.