I remember both of these historical occurrences really well! It's crazy they both occurred on the same date, 3 years apart!
1990 - Unseasonably warm weather prevailed from the Southern and Central Plains to the Southern and Middle Atlantic Coast, with afternoon highs in the 70s and 80s. Seventy-six cities reported record high temperatures for the date. Downtown Baltimore MD was the hot spot in the nation with a record high of 95 degrees, which smashed their previous record for the date by nineteen degrees. Other record highs included 89 degrees at Washington D.C. and 90 degrees at Raleigh NC. (The National Weather Summary)
1993: An incredible blizzard known as "The Superstorm" struck the eastern United States on this date through the 15th. The storm was described as the most costly non-tropical storm ever to hit the U.S., doing an estimated $6 billion in damage. The storm was as strong as a hurricane regarding winds and low pressure. The pressure dropped to an incredible 28.35 inches of mercury or 960 millibars when then the storm was located over the Chesapeake Bay. Boston, Massachusetts, recorded a wind gust to 81 mph, the most substantial wind they had recorded since Hurricane Edna in 1954. Also, as the storm was intensifying over the Gulf of Mexico, a wind gust to 99 mph was recorded by an offshore oil rig. It dumped incredible amounts of snow from Alabama to New England. The snow amounts were significant everywhere, but for places like Birmingham, Alabama, the 17 inches recorded brought the city to a standstill for three days. Mount Leconte, North Carolina, recorded 60 inches of snow. Practically every weather station in West Virginia established a new 24-hour snowfall record during the event. Syracuse, New York was buried under 43 inches of snow. The storm killed 220 people, and another 48 lost at sea. The storm also brought a 12-foot storm surge and 15 tornadoes to Florida, where 51 people were killed. Air travel was brought to a halt as every major airport from Atlanta north was closed during the height of the storm. During the late evening into the early morning hours of the 13th, a vicious squall line swept through Florida and spawned 11 tornadoes resulting in five fatalities. Thunderstorm winds gusted to 110 mph at Alligator Point and 109 mph at Dry Tortugas. Exceptionally high tides occurred along the western Florida coast. A 13-foot storm surge occurred in Taylor County, Florida, resulting in 10 deaths with 57 residences destroyed. A 5 to 8-foot storm surge moved ashore in Dixie County. Over 500 homes were destroyed, with major damage to another 700 structures. Click HERE for more information from the University of Illinois.