Just took a look at the updated 18Z runs of the GFS and NAM. "Ditto" with regards to the NAM, while variances with the 18Z as compared to the 12Z are minimal. Perhaps up to about 60 hr., the slightest bit faster and perhaps 30-40 miles westward, then nearly identical NNW motion though seemingly a little slower motion once passing Miami's latitude. Ultimately the variance is negligable. I had understood ( from a different forum ), that approx. 1/3 of the dropsondes had been conducted and which data was injected into the 18Z run. My understanding was however, that basically all of the dropsondes were to have been conducted and the data to be ingested in time for the 0Z runs this evening.