This thread will provide updates on the progress of the #WestAfricaWaterPlume as they come to hand. Sometimes animations, sometimes threads/commentaries....
The presentation of this Sahara water transit event this morning..... /1
The presentation of this Sahara water transit event this morning..... /1
https://twitter.com/althecat/status/1387093486361534476
And the presentation of the #WestAfricaWaterPlume tonight. It has got a lot bigger.
@zoom_earth has a nifty measurement tool which can probably be used to estimate the quantity of water in transit. At this stage the plume is being fed both directly off the Atlantic and also by the West African Monsoon through Mali. 
A 10 day global model Access-G (Aus/UK) of precipitable water. Access-G, like GFS and ECMWF expects the plume over Africa to take a more northerly trajectory. [Note: At present CMC and KMA models have it turning more easterly towards the ME.]
During the 17th April event the moisture went in a straight line north over the Black Sea and resulted in the very large rainfall event you see still playing out now over Russia. And this appears to be happening again. If it does it may strengthen this system further.
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