Monday, March 30, 2015

Central Wisconsin Aviaticus Cloud (Contrail) Forecast 3.30.2015

Presently we are clear, blue and brilliant with  barely a whiff or a needle trail to be seen.  Many of the passing traffic this morning are labeled with "No Call Sign" on the ADS-B tracking system.  Later this afternoon areas of the upper atmosphere where natural cirrus may form, the jet traffic should be spitting out short non-persistent trails, these may increase and lengthen as the precipitation low moves in from the west but I don't think there is a great chance to view persistent trails prior to the incoming cloud cover. Map from NOAA site


UPDATE: Pre-front thin clouds moved in early and quickly only several hours after I posted the forecast and with it a half dozen or so persistent trails right at a time when I was too busy driving to track and analyze.


ABOVE FACING SOUTH One trail maker in this shot tracking east to west along the fly way appeared to make a 90 degree turn to the north out of this formation.  As it left the clouds it continued to leave a good trail:


ABOVE FACING WEST I couldn't locate this guy on the Flight Tracker site,  Shortly after this shot was taken the portion of this persistent trail in the photo outside the hazy cloud front began to segment and dissipate in drier or warmer air.  Enlarged this can be seen at the far right of the trail behind the tree branches.

As the cloud front thickened with a bit of uniformity, I shot this partial sun-dog with aviaticus trails:


No short trails at all as I forecasted, the sky went from no trails to persistent trails with the front moving in. 

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