TOURNEFEUILLE (31) 27.09.1993

On 27 September 1993, a homeowner in Tournefeuille (31) found a regular circle about 8 m in diameter in the garden. Along its perimeter, a 30 cm-wide band of grass was uniformly flattened outward. An automatic sprinkler nozzle stood at the center. A severe thunderstorm had flooded the ground in preceding days and caused electrical problems, specifically with the fuse supplying the sprinkler system. SEPRA's initial analysis favored accidental opening of the sprinkler nozzle, leading to watering without pressure for a time and producing the observed pattern.