Although Dvorak classifications were far from supporting such an intensity, the system was upgraded to a Category 1 hurricane with winds of 75 mph (120 km/h) on October 30 — an occurrence which specialists described as a case of a small hurricane that would not have been observed before the availability of microwave satellite imagery. Upon reaching this intensity, Shary was entrenched in a deep, southwesterly mid-latitude flow, resulting in an accelerated motion toward the northeast.[11]