Weather pictures & report of February 27 2005

 

Slight snow showers.


Synopsis: advection of unstable polar continental air from the NE. T 850 hPa was -16C, T 500 hPa was -36C. From noon on (mostly) slight snow showers were formed, quickly disappearing in afternoon. Photos taken at Kampenhout in Central European Time (CET).

 

Picture of satellite Aqua at 1340 CET showing a lot of small snow showers. My position was at K. Just NNE is a line of showers which I photographed around 1350 hrs. Shower 2 was the panorama cloud picture at 1417 hrs and its later evolution at 1453-1458 hrs, number 3 was picture at 1423 hrs, number 4 was picture at 1446 hrs. (Source: Image courtesy of MODIS Rapid Response Project at NASA/GSFC)

 

Corresponding radar picture of 1340 CET. Precipitation tops went up little over 2 km. (Source: Belgocontrol)

 

13:50 N. Line with slight snow showers is passing the area.

 

14:00 SE. Opposite direction: an aircraft enters the "snow shaft".

 

14:17 N. Panorama composed of two pictures showing the relative flat tops and "virga" beneath.

 

14:23 ESE. Cumulus congestus praecipitatio with a blast of snowflakes ahead.

 

14:46 E. Virga under another "flat Cumulus".

 

14:53 N. The shower of the panorama picture came closer. Polar weather conditions with slightly negative temperatures and strong NE'lies.

 

14:58 NNW. This was in fact the last one passing by. No wintry cover was ever formed.

 

 

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