Altocumulus stratiformus perlucidus
Specimen #3
 
 




Photograph Data
Date: 19 December 1999
Time: 1440 UTC (9:40 a.m. CST)
Location: Springfield, OH, USA


Synopsis
Altocumulus stratiformis perlucidus (1) with contrails (2) in southerly flow between a high pressure system to the east, and an approaching low pressure system and cold front to the west.

Representative Surface Observation

Station: Dayton, Ohio (KMGY)
Date:  19 December 1999
Time:  1454 UTC  (9:54 a. m. CST)
 
Wind direction 90 degrees (east)
Wind speed 6 knots
Visibility 9 statute miles
Present weather None
Sky condition Clear
Temperature 0.0 C
Dew point -2.8 C
Altimeter setting 30.13 inches Hg
Sea level pressure 1021.2 mb
Remarks None reported


Analyses
 
 
Surface 925 mb 850 mb 700 mb 500 mb 300 mb
Upper Air Sounding Satellite Image