Thirty-Five Years Since the Perfect Storm and Midwest Blizzard
Thirty-five years after a historic convergence of weather systems lashed the East Coast and upper Midwest in late October 1991, meteorologists continue to study the dual meteorological events that produced the meteorological phenomenon famously dubbed “The Perfect Storm” and a historic regional blizzard, weather.com reported.
The tragic loss of the Gloucester fishing boat Andrea Gail and its six crew members occurred on Oct. 28, 1991, during the rapid intensification phase of the East Coast storm, according to Sebastian Junger’s 1997 bestselling book and the 2000 feature film.
The Atlantic Low and the Sinking of the Andrea Gail
Following a strong cold front sweeping off the East Coast, an area of low pressure developed along the front east of Nova Scotia on Oct. 28, 1991, quickly intensifying into the following day. A burgeoning high-pressure system over eastern Canada created a tremendous pressure gradient between the high and the lowering pressure of the gale center, generating fierce winds. According to weather.com, it was during this intensification phase that the Andrea Gail sank.
Absorption of Hurricane Grace and Peak Intensity
On Oct. 29, the large non-tropical low south of Nova Scotia began absorbing Hurricane Grace, wrapping in tropical moisture and receiving an injection of energy. In a YouTube clip referenced by weather.com, Stu Ostro referred to the resulting system as a “monstrosity.” By the morning of Wednesday, Oct. 30, the Perfect Storm reached peak intensity with an estimated surface pressure of 972 millibars, as documented by NOAA.
Coastal Flooding and Destruction Across New England
Peak Massachusetts wind gusts reached 78 mph at Chatham, 74 mph at Thatcher Island, and 68 mph at Marblehead, while Newport, Rhode Island, recorded a 63-mph gust. NOAA reported that waves 10 to 30 feet high battered coastlines from the Canadian Maritimes to North Carolina’s Outer Banks. Tides reached levels unseen in 47 years in New Jersey, while coastal damage in Massachusetts was described as comparable to the infamous Blizzard of ’78.
The Unnamed Hurricane Formation
As the primary storm began to weaken over the warm Gulf Stream on Nov. 1, 1991, a tiny circulation within it intensified into a full-fledged hurricane. U.S. Air Force Reserve Hurricane Hunters measured maximum flight-level winds of 99 mph a few thousand feet above the ocean. To avoid public alarm, the system was never officially named, eventually limping ashore as a weakening tropical storm in Nova Scotia.
The Halloween Blizzard of 1991 in the Upper Midwest
Simultaneously, a historic winter storm raged across the upper Midwest. Blocked by the East Coast system, a storm developing over the far western Gulf off the Texas coast on Oct. 30 tracked north-northeast toward Minnesota and Wisconsin. Minneapolis recorded its heaviest single-storm snowfall with 28.4 inches, while Duluth, Minnesota, received 36.9 inches of snow during 72 straight hours of snowfall, establishing an all-time state snowstorm record.
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