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What are all the all-time records for high and low barometric pressure in the USA?

April 26, 2017all-time Barometric high low pressure records USA

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What are all the all-time records for high and low barometric pressure in the USA?

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Using average sea level pressure of 29.92 inches of mercury as a point for comparison, the highest barometric pressure ever recorded in the USA was 31.85 inches in Northway, Alaska, in January 1989. The lowest barometric pressure ever recorded was associated with the landfall of the Labor Day hurricane in Key West, Florida in 1935, which registered a minimum pressure of 26.35 inches of mercury. Both are also records for North America. It is likely that tornadoes have had lower barometric pressures, but they have not become part of the official record. Learn more about atmospheric pressure on this USATODAY.com resource page.