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Up • Synoptic Conditions • Event Summary • Radar Summary • Polarimetric Data • Case Study
CASE 05 - Scattered cells over SMO
7/15/04

Microphysical scans 2130 - 2300 Z, 1h 30m

S-POL SUMMARY:

Cells had extensive anvils to E, despite strong easterly flow aloft - suggests very inefficient precipitation processes. Ascertaining the role of shear line in these two developments might prove interesting.

S-POL Log 0400715  

Scan Overview:

   

1900:

Running ClimoFar: Watching scattered cells initiating over SMO.

2100:

The previous 2 h, scattered echoes of reasonable intensity (60 dBZ, tops 15-16 km) were observed developing over the SMO (~ 80-100 km range) and propagating westward. At 2100, new development was observed at 40 km due east of S-Pol, in the vicinity of the N/S oriented shear line. New development appeared to run in a short (~15-20 km) N/S oriented line with very slow westward motion.

2130:

Begin Microphysical Scanning, Running MicroNear135: New cell growth at 40 km E - in vicinity of a N/S oriented shear line. Cell initiation/growth mechanism may be related to shear line. Also, upper level trough was over the area at the time, which also may have contributed to development.

2200:

New group of cells initiating at 40 km east - previous cells have advected to the west and are dissipating.

As previous cells weakened, new cells once again developed in the vicinity of the shear-line.

       

2230:

Cells appeared to be dissipating.

2245:

Running MicroFar135: Changed in order to improve the vertical resolution. Cells at 30 km east are not being topped, but they are mostly anvil at upper levels so trade-off seems worth it.

2300:

End Microphysical Scanning: Went back to ClimoFar because most cell activity has dissipated.

   

 


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