[kcg]

The rules specifically state how 2 miles of separation is defined. 7110.65 5-8-4-Note 1 says "This procedure permits a departing aircraft to be released so long as an arriving aircraft is no closer than 2 miles from the runway at the time. This separation is determined at the time the departing aircraft commences takeoff roll." [1]

Just to keep stating this: I'm not at all defending the AUS controller here. A squeeze play like this in low visibility is needlessly reckless.

[1] https://www.faa.gov/air_traffic/publications/atpubs/atc_html...

[michaelmrose]

2 miles is like 43 seconds at 165. You are right standard seems insufficient.