Meteorological events that happened on February 11th:
The temperature at Braemar Grampian, Scotland dropped to -17°; the coldest temperature ever measured in the United Kingdom.
One of the greatest arctic outbreaks continued. The temperature plunged to -61° at Fort Logan, MT. Pittsburgh, PA recorded their coldest ever with -20°. Milligan recorded Ohio’s coldest ever at -39°. Other records included: Columbus, OH with -20° tying their coldest ever. -6° at Philadelphia and -15° at Washington, D.C.’s National Airport were all-time record lows.
At the same time a "Great Eastern Blizzard" left a blanket of snow from Georgia to New Hampshire. The state of Virginia took the brunt of the storm, with snowfall totals averaging 30 to 40 inches. Raleigh, NC picked up 17.7 inches of snow through the 13th. Richmond's 16.3 inches of snow was their 4th biggest ever.
Very unsettled weather continued over Gibraltar. On the 10th, 2.01 inches of rain fell in 24 hours and on the 11th, 4.02 inches fell, accompanied by occasional thunder and, in the evening, gale force winds.
Austria's coldest night on record occurred as Zwettl dropped to -33.9°.
Ifrane, Morocco reported Africa’s coldest temperature ever with -11°.
Barcelona, Spain recorded their coldest night on record as they dropped to -14°.
Sun Valley, ID received 38 inches of snow in just 24 hours to set the state record. 182 inches of snow was on the ground at Mullen Pass, ID.
New Hampshire registered its record maximum 24 hour precipitation as 10.39 inches fell at Mount Washington.
A huge snowstorm known as the "Megalopolitan blockbuster snowstorm" swept up the eastern seaboard, burying the Mid-Atlantic area from northeastern Georgia to eastern Maine with very heavy snow. During the late evening, low pressure over Georgia started giving a light snow to the Baltimore-Washington, D.C. area. The snow slowly picked up in intensity during the overnight hours and by morning the surface low was positioned just east of Wilmington, NC. A tight pressure gradient between the storm and high-pressure to the north caused winds to increase, gust over 40 mph and snowfall rates of 3 inches per hour were common. Many observers particularly in the Maryland suburbs reported several episodes of lightning and thunder. Most of the southern and eastern suburbs recorded 15 to 20 inches of snow while 20 to 30 inches of snow fell in the northern and western suburbs. National Airport received 16.6 inches while 22.8 inches fell at both BWI and Dulles Airport. In Northwest Montgomery and Frederick Counties in Maryland, the storm was the greatest ever recorded easily exceeding the totals received during the famous “Knickerbocker” storm of January 1922. Germantown and Frederick, MD both received 30 inches of snow and western Loudoun County, Virginia, up to 38 inches. Braddock Heights, just west of Frederick, MD, received 34.9 inches. Areas to the east and a little south of Washington received snow pellets mixed with snow thus reducing their accumulations. In Pennsylvania, the storm produced 21 inches at Philadelphia, 24 inches at Harrisburg, and 25 inches at Allentown. New York City received 22 inches of snow and 35 inches were reported at Glen Gary, located in the Blue Ridge Mountains of West Virginia. Windsor Locks, CT received a record 19 inches of snow in 12 hours. 5 inches of snow in one hour was recorded at Allentown, PA and Hartford, CT. Winds gusted to 72 mph at Chatham, MA. The storm resulted in 46 deaths, including 33 when a freighter capsized and sank off the Maryland/Virginia coast.
Denver, CO reported only their 3rd occurrence on record of a thunderstorm in February. Several cities in the north central U.S. reported record high temperatures for the date. Huron, SD reported February temperatures averaging 19 degrees above normal. Williston, ND reported readings averaging 24 degrees above normal for the month.
Bitter cold air gripped the north central U.S. Morning lows of -35° at Aberdeen, SD, Bismarck, ND and International Falls, MN were records for the date. Bemidji, MN was the cold spot in the nation with a low of -39°, however, a reading of -42° was reported at Gettysburg, SD. In the Northern Plains, Baker, MT warmed from -27° to 40°.
While much of the continental U.S. enjoyed sunshine and seasonable temperatures, a strong weather system over the Hawaiian Islands deluged Honolulu with 2.5 inches of rain.
A winter storm produced up to 10 inches of snow in Vermont, and up to 9 inches of snow in Aroostook County in northeastern Maine. A 3-day snowstorm began to overspread Oregon, and the winter storm produced 29 inches of snow at Bennett Pass. Mild weather continued in the central U.S. La Crosse, WI reported a record 47 consecutive days with temperatures above normal.
The Northeast was suffering under its 2nd winter storm in 3 days. Newark, NJ picked up 18 inches of snow on top of the foot that had fallen just a few days earlier. 18 inches fell at Newark, NJ & New Bedford and Hyannis, MA. 3 to 4 inches of sleet was reported at and around the Baltimore, MD – Washington, D.C. areas.
Canada's snowiest day was recorded as Tahtsa Lake located in the Whitesail Range of the Coast Mountains of British Columbia received 57 inches.
Residents of Central Illinois thought that the National Weather Service had gone crazy when their NOAA Weatheradio sirens sounded with severe thunderstorm warnings, even though it was snowing steadily. The NWS issued the warnings as a line of convective snowfall moved across the area.
Governor John Hoeven declared a snow emergency as winds gusting over 70 mph along with heavy snow produces low visibilities and drifts up to 20 feet in northwestern North Dakota.
The Mid-Atlantic and northeast was in the grips of a major winter storm. Snowfall records fell in Philadelphia and Allentown, PA, Bridgeport and Hartford, CT, Newark, NJ, and Worchester and Boston, MA. The highest total reported was 30.2 inches at Fairfield, CT. New York City’s Central Park recorded their greatest 24-hour snowfall total of 26.9 inches.
The snow depth at Glasgow, MT reached 29 inches, setting a new record for snow depth for the location. The old record was 26 inches set on February 10, 1916.
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