Altocumulus
Specimen #1
 
 




Photograph Data
Date: 26 October 2002
Time: 2120 UTC (3:20 p.m. CST)
Location: 30 NNW of Ardmore, OK USA


Synopsis
Altocumulus formed in the modifying cool air behind a cold frontal passage earlier in the week. A weak ridge of high pressure dominated the region, with a high center near Tulsa at this time.

Representative Surface Observation

Station:  Norman, OK
Date: 26 October 2002
Time:  1456 UTC  (2:56 p.m. CST)
 
Wind direction 10 degrees (north)
Wind speed 8 knots
Visibility 10 statute miles
Present weather ----
Sky condition Clear
Temperature 13 C
Dew point 9 C
Altimeter setting 30.11 inches Hg
Sea level pressure ----
Remarks ----


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