From Record Low to Record High Pressure?
Last week we were talking about record-breaking low interior U.S. sea-level pressure with the massive Midwest Storm (pressure map). From that record 28.21" there has been a nationwide swing to 30.70" today with a nationwide high pressure system (pressure map)! That's an incredible difference of 2.5 inches! It almost brings some credence to those silly* barometer descriptions!
(*The two needles represent the approximate "normal" barometric range -- so by these descriptions the average person would never see anything outside of "Fair"!)
Readings are probably not record-breaking today (most interior state records are around 31.00") unusually high across the Rockies, as high as 30.75" at Berthoud Pass, Colorado (and to a lesser extent, the Northeast and Canada, where they are as high as 30.58" at Petawawa, Ontario.
Thanks to Facebook Friend Hunter O. for the tip on the high pressures today.
