Question: Meteorologist Robert case is best known for naming the fourth hurricane and final tropical cyclone is the 1991 hurricane season in what ocean?

The 1852 Atlantic hurricane season was one of only three Atlantic hurricane seasons in which every known tropical cyclone attained hurricane status.  Five tropical cyclones were reported during the season, which lasted from late August through the middle of October; these dates fall within the range of most Atlantic tropical cyclone activity, and none of the cyclones coexisted with another.  Though there were officially five tropical cyclones in the season, hurricane scholar Michael Chenoweth assessed two of the cyclones as being the same storm.  There may have been other unconfirmed tropical cyclones during the season, as meteorologist Christopher Landsea estimated that up to six storms were missed each year from the official database; this estimate was due to small tropical cyclone size, sparse ship reports, and relatively unpopulated coastlines. <SEP>  Over the course of his career, he worked in NWS various offices, developing a diverse background in various types of weather forecasting, including a lengthy stint as a hurricane forecaster. Robert Allen "Bob" Case (December 16, 1939 – June 19, 2008) was a meteorologist who worked for the National Weather Service (NWS) for 28 years.  He is best known for inspiring the naming of the 1991 Perfect Storm as "The Perfect Storm." <SEP> Hurricane Helene was the most intense tropical cyclone of the 1958 Atlantic hurricane season.  The eighth tropical storm and fourth hurricane of the year, Helene was formed from a tropical wave east of the Lesser Antilles on September 21, 1958.  Moving steadily westward, the storm slowly intensified, attaining hurricane strength on September 24.  As conditions became increasingly favorable for tropical cyclone development, Helene began to rapidly intensify.  Nearing the United States East Coast, the hurricane quickly attained Category 4 intensity on September 26, before it subsequently reached its peak intensity with maximum sustained winds of 150 mph (240 km/h) and a minimum barometric pressure of 930 mbar (hPa; 27.46 inHg).  The intense hurricane came within 10 mi (15 km) of Cape Fear, North Carolina before recurving out to sea.  Accelerating northward, Helene gradually weakened, and transitioned into an extratropical cyclone as it passed over Newfoundland on September 29.  Helene's extratropical remnants traversed eastwards across the Atlantic Ocean before dissipating near Great Britain on October 4. <SEP>  The system was the fourth hurricane and final tropical cyclone in the 1991 Atlantic hurricane season. The 1991 Perfect Storm, also known as The No-Name Storm (especially in the years immediately after it took place) and the Halloween Gale, was a nor'easter that absorbed Hurricane Grace and ultimately evolved back into a small unnamed hurricane late in its life cycle.  The initial area of low pressure developed off Atlantic Canada on October 29.  Forced southward by a ridge to its north, it reached its peak intensity as a large and powerful cyclone.  The storm lashed the east coast of the United States with high waves and coastal flooding before turning to the southwest and weakening.  Moving over warmer waters, the system transitioned into a subtropical cyclone before becoming a tropical storm.  It executed a loop off the Mid-Atlantic states and turned toward the northeast.  On November 1 the system evolved into a full-fledged hurricane with peak winds of 75 miles per hour (120 km/h), although the National Hurricane Center left it unnamed to avoid confusion amid media interest in the predecessor extratropical storm.  It later received the name "the Perfect Storm" (playing off the common expression) after a conversation between Boston National Weather Service forecaster Robert Case and author Sebastian Junger.  The tropical system weakened, striking Nova Scotia as a tropical storm before dissipating.