- 2 Dec 99: Bands of mid- and
upper-level cloud, associated with a deep upper-level trough that extended
from the Dakotas to the southern tip of the Baja Peninsula, moved across
the TX Panhandle and into northern OK. These clouds were east of a dry
air slot over NM and southern CO. The dry slot eventually moved into
the area and helped fire pre-frontal convection ahead of a slow-moving
cold front that was situated from south central MN to southern NM.
The 300-mb winds were SSW at 70 kts (36.0 m s-1) at the ARM site, as
the central core of a 100-kt (51.4 m s-1) jet stream developed over
northeast TX. A pre-frontal mid-level cloud band was sampled as it
moved over north central OK from 1453 to 1605 UTC.
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