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MethodsMeteorology; observational geometryWind-drift and angular-size check for a low sighting
Method · meteorology; observational geometry

Wind-drift and angular-size check for a low sighting

Compares a witness-reported course with the downwind direction from the nearest hourly station, and the reported size and motion with what a small drifting balloon would show.

Meteorology; observational geometryVersion 1.0Licence MIT1 runUsed on 1 mystery

Questions it answers

Code Python

Download module (.py)hackensack_check.pyView source

Runs and results 1 run

RunMysteryMeasuredResultAgainstDate
RUN0DFY94JHJTNTIncidentCourse minus downwind (degrees)-41.40 (moving exactly with the surface wind)

Applied to

Incident 88: the Hackensack disc, 3 August 1947
1 datasetTeterboro Airport hourly surface observations, 1947 (NOAA ISD 99999994741)
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