That wobble to the West saved St. Croix.
BULLETIN
Hurricane Maria Intermediate Advisory Number 18A
NWS National Hurricane Center Miami FL AL152017
200 PM AST Wed Sep 20 2017
...AIR FORCE HURRICANE HUNTER PLANE FINDS MARIA’S CENTER JUST
OFFSHORE OF THE NORTHWESTERN COAST OF PUERTO RICO...
SUMMARY OF 200 PM AST...1800 UTC...INFORMATION
Hurricane-force winds extend outward up to 60 miles (95 km) from
the center, and tropical-storm-force winds extend outward up to 150
miles (240 km).