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Toronto pressure fell to 28.40 inches, breaking its record by 0.17. The 956.0 mb (28.23 inHg) barometric pressure measurement recorded in Mount Clemens, Michigan, was the third-lowest non-tropical atmospheric pressure recorded in the mainland United States [6] and the lowest in the Central United States. [2]
The heaviest snow fell to the west of the low pressure center, which tracked from northeast Iowa through central Minnesota up to Lake Superior. [2] Sustained winds of 30–50 mph (48–80 km/h) with gusts from 70–90 mph (110–140 km/h) produced snowdrifts up to 20 feet (6 m) in some locations.
January: Indianapolis records its greatest monthly snowfall total (30.6 inches (780 mm)); Mayor Hudnut declares a three-day snow emergency during the Great Blizzard of 1978, the longest in the city's history. [436] Sister city relationship established with Taipei, Taiwan. [437] 1979 White River State Park is established. [438]
This is the equivalent sea-level pressure; Tosontsengel is located at 1,300 metres (4,300 ft) above sea level. The highest adjusted-to-sea-level barometric pressure ever recorded (below 750 meters) was at Agata, Evenkiyskiy , Russia ( 66°53′N 93°28′E / 66.883°N 93.467°E / 66.883; 93.467 , elevation: 261 m (856.3 ft)) on 31 ...
1667 – Robert Hooke builds another type of anemometer, called a pressure-plate anemometer. [22] 1686 – Edmund Halley presents a systematic study of the trade winds and monsoons and identifies solar heating as the cause of atmospheric motions. – Edmund Halley establishes the relationship between barometric pressure and height above sea ...
Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa ), which is equivalent to 1,013.25 millibars , [ 1 ] 760 mm Hg , 29.9212 inches Hg , or 14.696 psi . [ 2 ]
Meteorologists were forecasting a record low barometric pressure reading as the storm passed over Kansas. The current record set in 1878 at 971.6 mbar (28.69 inHg) and the storm was forecast to have a slightly lower reading, the equivalent of a Category 2 Hurricane. [19] Dodge City, Kansas reported a new record low pressure. [citation needed]
The observer should pick the 6 because it represents the last part of the trace and is thus most representative of the pressure change. In the bottom centre is the aneroid (large circular silver object). As the pressure increases, the aneroid is pushed down causing the arm to move up and leave a trace on the paper.