Summary of results: 

• The rate of transient motion in the ground is about four times as high during windy time (~30MPH wind) versus quiet time (~3MPH wind) 
• But the rate of transient motion in the isolated stages is significantly more increased (in the worst case, ETMX ISI ST2 is about 13 times as glitchy during high wind) 
• The amplitude of transients with a peak frequency below ~30Hz was significantly increased during the windy time, but the ampltiude of events above ~30Hz appeared about the same as during relatively quiet time. 
• A summary of plots for ETMX is attached, and the complete study is here on the DetChar wiki

Details:

In response to Sheila's alog 14416 indicating high winds, DetChar looked at the transient motion behavior of ETMX and ITMY during high local wind speeds and compared it to quieter night time (low wind speed and BLRMS motion) from two days before. 

The ETG (Event Trigger Generator, or single-ifo burst pipeline) Omicron was run on a two hour stretch of both windy and quiet times for a subset of DOFs on all stages (ground motion, HEPI, ISI ST1, ISI ST2). Omicron searched for transients (bursts of excess signal power, distinct in time and frequency) between 0.1 and 64 Hz. 

Take away: If we find the transient motion events in optic table motion associated with high wind speeds couple to DARM, feed forward may be a good option to mitigate this effect.