With high pressure now established up from the southwest in the eastern North Atlantic - and an area of low pressure being held further west of Ireland - this year's festival continues on a settled and increasingly warm note.
Spreading the area of air pressure over the jet staggers the sound waves and decreases the intensity of the boom.
For what causes the cold snaps is when an area of high pressure sits over the continent and, well, just sits there.
According to Dr Elsner, this change is related to sudden shifts in the position of the long-term area of high pressure that sits near the Azores.
National Weather Service meteorologist "Skip" Ely said the dry pattern is caused by a persistent area of high pressure that has dominated North Texas weather since the end of June, blocking normal moisture flows across the South.
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The Germans, ever fearful that they may be asked to pick up the bill for the profligacy of others, are already squashing any talk of issuing joint euro-area bonds to relieve some of the pressure on national governments.
French President Francois Hollande said the meeting of the 17 eurozone heads of state, held after the leaders of the EU countries outside the single currency area had left, was the result of pressure from Spain and Italy quickly to find short-term measures to stabilize the markets.
More specifically it describes a low-pressure area whose center of rotation is just off the East Coast and whose leading winds in the left forward quadrant rotate onto land from the northeast.
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One area of focus for the inquiry will be the pressure that ministers and their aides apparently exerted on Mr Kelly, directly or indirectly, to step into the spotlight.
Camborne's Trevithick Day is an annual celebration of the heritage and mining heritage of the area, with the focus on its famous son Richard Trevithick, the pioneer of high pressure steam power.
The prize role on Facebook could put the winner ahead of competitors in an area that has proven to be one of Wall Street's bright spots amid relentless pressure on profits.
Craig Dargo volleyed over the bar after Diamond had failed to deal with Jack Ross's searching ball into the area as the Buddies enjoyed a rare period of sustained pressure.
"It was an insane time, in an insane area -- an intense pressure cooker, " Rothenberg said of the era.
As scientifically defined, pressure is the ratio of force to the area over which said force is distributed or applied.
Mississippi officials were reportedly considering breaching a side of the dam that abuts a forested area in order to relieve pressure.
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The Northern Health Trust has been under considerable pressure, mainly due to the poor performance of the Antrim Area Hospital's accident and emergency department.
The pressure to tighten fiscal policy in some parts of the euro area will make it hard for the European Central Bank to even consider raising interest rates.
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Every home in the area has been sent a consultation document which explains the pressure to cut the amount of rubbish being buried on landfill sites.
But continued Australian pressure eventually produced another score, again for Jennings in the same area of the field, after he was well set up by Darren Lockyer.
Mexico only had themselves to blame for the Albiceleste's second after Osorio, under no immediate pressure, scuffed a pass close to the edge of his penalty area, allowing Higuain to snatch the ball before rounding Perez and slotting home.
The home support were appealing for a penalty within two minutes of the restart when Michael Paton fell under pressure from John Potter in the area, but referee Brian Winter waved play on.
The worry is that, under German pressure, the ECB will have the same misguided tendency to toughness, condemning the euro area to years of stagnation.
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