I tracked the position on the linked-up map and estimator; looks like about 150 miles west of Sarasota.
Here's the map to plot location given latitude/longitude degrees:
http://www.satsig.net/...
http://www.heraldtribune.com/...
A mass of water suspected to contain a subsurface mixture of oil and toxic chemical dispersants has already reached the outer edge of the West Florida shelf, according to a respected oceanographer.
The West Florida shelf runs parallel to the state's coast and extends to about 150 miles. The plume is located at the edge of the shelf, west of Sarasota at about 27 degrees north latitude and 85 degrees west longitude.
Yes, a very short diary, but this needs to get out; I haven't read this anywhere else. The story comes from the Sarasota Herald-Tribune.