Altostratus undulatus
Specimen #1
 
 




Photograph Data
Date: 07 August 2000
Time: 0125 UTC (06 August 2002, 7:25 p.m. CST)
Location: Columbia, MO, USA


Synopsis
Altostratus sheet exhibiting undulations; tufted altocumulus elements are present (1) along with virga (2).  An area of low pressure was located in the upper peninsula of Michigan with a cold from extending from lower Michigan southwestward through southern Iowa.

Representative Surface Observation

Station:  Columbia Regional Airport
Date:  07 August 2000
Time:  0054 UTC  (06 August 2002, 6:54 p.m. CST)
 
Wind direction 350 degrees (North)
Wind speed 07 knots
Visibility 10 statute miles
Present weather No report
Sky condition Clear
Temperature 28.3 C
Dew point 24.4 C
Altimeter setting 29.85 inches Hg
Sea level pressure 1009.9 mb
Remarks None


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