Aviaticus Pencils in the Sky Grow to Cane Poles

This morning in the west to east fly lane short aviaticus trails were being painted in the partly clouding skies. As more clouds moved in the contrails grew from pencil size (if you were to hold a pencil over your head) to half the viewing hemisphere. All dissipating quickly and then overcast ruled and goodbye sunshine with the increasing cloud cover that moved in.  Two short persistent segments could be seen in the south prior to cloud cover.  Perhaps some broken clearing this afternoon and upper atmosphere weather may bring about another viewing event before sunset.

UPDATE:  The cloud cover passed in early afternoon and the traffic began stroking out the elongated trails.  But mid after noon with heavy traffic along the east west flyway the cirrus aviaticus became quite numerous.  As they began to slowly spread, cirrostratus aviaticus formed within the natural and very thin cirrostratus.  Nice show.

This Canadair CRJ left a persistent aviaticus that was still in view and fairly tight even after I confirmed the landing in Minneapolis. Map from Flightradar24

An east bound Boeing at 34000 and a west bound Canadair CRJ-200 at 31000 appeared to be heading for a collision on the iPad, still impressive in the photo:

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