On Thursday Late night and and early Friday 13th morning, the regions around Chennai received unexpected very heavy rains. Amounts of upto 47 cms was recorded, and many a usually drier lakes received a bounty, and filled up the water reserves.
The reason for this, according to me, was due to the "divergence" in the 200 jet streams, almost over the affected areas.
Where divergence (evacuation of mass) occurs in the upper levels, rising motion result. Convergence and divergence in a jet streak is caused by an imbalance of forces as a parcel accelerates into a jet streak then decelerates out of the jet streak.
This could have created a Lower level small Vortex.
From Vagaries
The reason for this, according to me, was due to the "divergence" in the 200 jet streams, almost over the affected areas.
Where divergence (evacuation of mass) occurs in the upper levels, rising motion result. Convergence and divergence in a jet streak is caused by an imbalance of forces as a parcel accelerates into a jet streak then decelerates out of the jet streak.
This could have created a Lower level small Vortex.
From Vagaries
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