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Recent High barometric pressure readings


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#1
Kevin Shaw

  • Kevin Shaw

  • 868 posts
  • Joined November 14, 2010

Just before my midnight observation on Friday, November 29 , I recorded a barometric pressure of 30.75" -  it was oscillating over a few hours around that time between 30.74" and 30.75". Since November 2009, this 30.75" value that hit just prior to midnight and now in the early morning hours of Saturday is a record high pressure reading for my station during that very modest period of record. My barometric pressure data records only go back to mid-November 2009, when I installed my current VP2 system. I didn't track daily barometric pressure readings before that.

My highest readings of each year I have records for from 2010-2013:

April 2010  30.60"
March 2011 30.71"
March 2012 30.72"
January 2013 30.63" (but now surpassed with 30.75" in November 2013 - with still a month to go in 2013)

Maybe I can see some replies from you all out there with what you all "maxed out" with during this period of extreme high pressure. And for those of you with much longer periods of records for your pressure records, how this current setup compares with other notable very high pressure periods in past years. I can't say that my readings are perfectly calibrated, but I do keep a close watch on them most of the time.

 

Thanks, Kevin in Gaithersburg MD



#2
nw baltimore wx

  • 1,995 posts
  • Joined November 15, 2010

Interesting. I don't keep my own records but your post made me curious as to the highest pressure recorded in MD. Do you know? I could only find data for Philly. There, the November record is 30.84" and the all time high is 31.02" set on January 27, 1927.

I'm only guessing that MD would be comprable. In any case, this current air mass is impressive.

#3
MN Transplant

  • 7,752 posts
  • Joined November 20, 2010

Nice catch, Kevin. 30.73" (1040.5) just after midnight is the highest pressure I've recorded since mine was installed in early 2011.

#4
thegreatdr

  • 107 posts
  • Joined December 20, 2010

Here are the record pressure maps I'm still in the process of constructing for the lower 48...I've been posting them to my facebook feed as well as work and the SUNY-Albany e-mail listserv.  If you're familiar with the station model, and how isobars were labeled prior to 1999, the maps will be quite readable to you.  =)

 

http://www.wpc.ncep....cordLowSLPs.gif

http://www.wpc.ncep....ordHighSLPs.gif

http://www.wpc.ncep....cordLowSLPs.gif

http://www.wpc.ncep....ordHighSLPs.gif

 

DR



#5
nw baltimore wx

  • 1,995 posts
  • Joined November 15, 2010

Here are the record pressure maps I'm still in the process of constructing for the lower 48...I've been posting them to my facebook feed as well as work and the SUNY-Albany e-mail listserv.  If you're familiar with the station model, and how isobars were labeled prior to 1999, the maps will be quite readable to you.  =)

 

http://www.wpc.ncep....cordLowSLPs.gif

http://www.wpc.ncep....ordHighSLPs.gif

http://www.wpc.ncep....cordLowSLPs.gif

http://www.wpc.ncep....ordHighSLPs.gif

 

DR

 

Cool.  Thanks!



#6
Kevin Shaw

  • Kevin Shaw

  • 868 posts
  • Joined November 14, 2010

I found out from locally well-known weather statistician and observer Stan Rossen that the highest pressure reading ever recorded in the Washington/Batlimore area was 31.07" set back on Feb 13, 1981. This value was recorded at both BWI and IAD (Dulles Airport). DCA (National Airport) had a reading on that day of 31.06. Stan noted from his own records in Glenmont MD that he recorded his highest November pressure ever back in November 1996 with a 30.83" reading.  I believe the world record for highest barometric pressure was set some time ago in Siberia with a reading close to if not just over 32.00"!!!! Anyone who can dig up the specifics for that amazing value and post it here would be most appreciated. Thanks everyone for their input! I will  check out those links that you posted GreatDR when I get the chance.   Kevin

 

P.S. Just checked around a bit, and there is a fascinating article on weather underground on highest pressure readings around the world. Big controversy over some even higher readings from Mongolia fairly recently- but a detailed explanation why they are not accepted can be found within the link below

 

The article does indeed show the accepted world record highest barometric pressure reading was set in Siberia on  Dec 31 1968 at 32.01" (1083.3 MB)

 

The link to the weather underground article is:

 

http://www.wundergro...ressure-records






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