Record Setting Barometric Pressure
Record Setting Barometric Pressure
Are you feeling the pressure today, literally? If so, you are not alone. The Portland International Airport recorded a maximum barometric pressure reading Thursday (rounded to the nearest hundredth of an inch) of 30.76″ (4:53am observation) which is tied for the second highest reading since records began at the airport in 1940. This is also the single highest barometric pressure reading since December 1998. Looking even further back at downtown Portland records, the record for the month of December is 30.79″ set back in 1879. The all-time Portland highest barometric pressure reading (for anytime of the year) was set back on February 2nd, 1880 at 30.84″. At this point, neither the December or the all-time record appear to be in jeopardy. But these are worth noting none-the-less.”
Here are the top 10 hourly barometric pressure records from the Portland Airport (1940-2011) sorted first by pressure, then by date (most recent first) —
Date / Max Sea Level Pressure
1/28/1949 30.81
12/1/2011 30.76
12/21/1998 30.76
1/11/1963 30.76
12/20/1998 30.75
1/23/1988 30.75
1/12/1963 30.75
1/16/1957 30.75
1/11/2009 30.74
2/11/2002 30.74
Here are the top barometric pressure readings for a given month of the year in Portland. Records for this data set date from 1871-2011 and include both the airport and downtown —
Month / Highest Baro / Year
January 30.81 1949
February 30.84 1880
March 30.70 1955
April 30.68 1936
May 30.59 1931
June 30.51 1895
July 30.41 1944
August 30.39 1876
September 30.49 1937
October 30.63 1935
November 30.74 1928
December 30.79 1879
Annual 30.84 February 2nd, 1880
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Steve Pierce
President, Oregon Chapter of the American Meteorological Society (AMS)
E-mail: stevejpierce@comcast.net
Phone: 503-504-2075
Personal web site – http://www.piercevideo.com/weather.shtml
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