6 September 1996

No MISTI over pass.
NOAA 14 scanned EVG at 19:15
NOAA 12 passed at 0:14.

Cloud Summary

HSRL turned on at 21:15 UTC. It found very thin Ci in two layers, 14.0-14.8 km and 15.0-15.8 km. The VIL indicated the base of the lower layer descended to 13.0 km to the east by 22:05 UTC as thicker Ci move in from the east. At 22:15 UTC a lower water layer appeared from 4.5-5.5 km which blocked the lidars from seeing the Ci above. The lidars were shut down at 23:10 UTC.

19:15 UT NOAA 14

Light Ci were passing to the north of EVG from east to west. Some IR images were not collected by Wylie during this time but they are in other archives. These clouds are very dense and obvious on the enhanced 20:15 IR image. GOES 8 reported a wide range of cloud heights from 1.5-11.0 km. An increase in these clouds can be seen between the 18:46 UT and 19:46 UT images.

NOAA 14 heights at 19:15 UT (shown on both GOES 8 plots) covered a smaller range were lower from 7.7-9.8 km.

Cloud densities ranged from 0.21-1.0 Effective Emissivity on GOES 8 (18:46 and 19:46 UT) with lighter clouds appearing on the 18:46 UT analysis. NE=0.21-1.0 corresponds to visible optical depths=0.5-6.0.

NOAA 14 Effective Emissivitie at 19:15 UT ranged from 0.05-0.69 corresponding to visible optical depths= 0.1-2.3.

00:14 UT NOAA 12

Lighter Ci move over Everglades City later in the afternoon. These Ci are evident in the GOES-8 IR loop.

GOES 8 reported cloud heights of 7.1-15.9 km. NOAA 12 reported slightly higher cloud heights of 11.0-16.7 km.

Cloud densities (Effective Emissivity) ranged from 0.09-0.80 for GOES 8 middle and upper level clouds while NOAA 12 densities were lighter with ranging 0.16-0.51. The NOAA 12 Effective Emissivites correspond to visible optical depths of 0.3-1.4.