Nimbostratus
Specimen #1

Photograph Data
Date: 04 December 1999
Time: 1721 UTC (12:21 p.m. CST)
Location: Columbia, MO, USA

Synopsis
Nimbostratus clouds (1) as a result of a stationary front stretching from Michigan southwestward to Oklahoma.

Representative Surface Observation

Station: Columbia Regional Airport
Date: 04 December 1999
Time: 1754 UTC (12:54 p.m. CST)

Wind direction 360 degrees (north)

Wind speed 10 knots

Visibility 2.5 statute miles

Present weather Light rain, mist

Sky condition Overcast at 300 feet

Temperature 11.1 C

Dew point 10.6 C

Altimeter setting 29.94 inches Hg

Sea level pressure 1013.7 mb

Remarks Pressure falling rapidly

Analyses

Surface

925 mb

850 mb

700 mb

500 mb

300 mb

Upper Air Sounding

Satellite Image

Wind direction	360 degrees (north)
Wind speed	10 knots
Visibility	2.5 statute miles
Present weather	Light rain, mist
Sky condition	Overcast at 300 feet
Temperature	11.1 C
Dew point	10.6 C
Altimeter setting	29.94 inches Hg
Sea level pressure	1013.7 mb
Remarks	Pressure falling rapidly