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IFEX daily log

Thursday, July 21, 2005

It was learned today that the earliest the N43RF could deploy to Acapulco would be Saturday. In the meantime both P-3's would remain in Tampa. No ER-2 flights are planned for today.

Several possible features of interest are evident today. First, the area north of Hispaniola has shown rotation and deep convection. It was anticipated that it would be declared a depression by the 5 PM NHC advisory. Second, an area of deep convection had exploded over the western Caribbean (Fig. 15). This convection appeared to be enhanced by upper-level diffluence associated with the retrograding upper-level cold low mentioned previously. Shear was moderate (about 20 kt) over the region(Fig. 16), and. there was an indication of an anticyclone over the area. Concurrent visible imagery (Fig. 17) indicated banding features possibly indicative of midlevel rotation. The striations in the cirrus shield indicated healthy outflow in all quadrants except perhaps the southwest quadrant. This is supported by the upper-level divergence field (Fig. 18). These features led this system to be considered as a possible target for operations during the upcoming days. In the East Pacific, there is some convection oriented in an east-west line along about 10 N. The pattern is very similar to that flown the previous week, and it is not believed that this feature is a viable target. For these reasons, it was decided to target the system in the western Caribbean.

Rob Rogers
HRD Field Program director


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