At 7:56 p.m. Nov. 26, Crescent City’s Jack McNamara Field Airport set an all-time low barometric reading for any airport in California, according to The Weather Channel.

Barometric pressure is the pressure within the atmosphere of the earth. The average pressure at sea level is 1013.25 millibars, or 29.92 inches of mercury. The reading in Crescent City was 973.4 mb, or 28.74 inches. 

The previous California record had been set in Eureka.

The recent Thanksgiving turbulence here has been named Winter Storm Ezekiel by The Weather Channel.

It became big news when cold air collided with a “pinched off” lobe, called a “warm seclusion,” from a warm air mass that occurs over ocean waters, according to The Washington Post. The warm air rose quickly over the cold air, which is what caused the low barometric reading. That’s what created the “bomb cyclone.” 

“Bombogenesis” is the term used by meteorologists when a mid-latitude cyclone rapidly intensifies, according to the National Oceanic and Atmospheric Administration. Recall that weather forecasters had predicted the bombogenesis, defined by a pressure drop of at least 24 mb in 24 hours, with projections that barometric pressures might drop to a 980 mb low, with hurricane-force winds offshore. The actual drop was 39.85 mb within 13 hours for Crescent City.

Gold Beach came close to Crescent City’s record, with a barometric pressure reading of 974.6 mb, or 28.76 inches, at 6:35 p.m., with a drop of 38.65 mb over 12.5 hours.

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