Barometric Pressure Forecast for Poquoson, Virginia
Barometric pressure forecast for Poquoson, Virginia — on the Chesapeake Bay marshes of the Virginia Peninsula, northeast of Hampton. See current barometric pressure and what it means for weather-sensitive people.
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Pressure and weather in Poquoson
Poquoson is the lowest-lying city in Virginia, most of it under seven feet above sea level, built across a peninsula of tidal marsh and creek between the Poquoson River and the Back River where both open into the Chesapeake. Water is not a backdrop here; it is the whole weather question. Because the land is so flat and so low, the events that matter are the ones that push water rather than the ones that drop rain. An autumn nor'easter delivering two days of sustained northeast wind will flood streets that a violent thunderstorm leaves untouched, and a full moon tide adds a foot on top of whatever the wind is already doing. Hurricanes and tropical storms tracking up the coast or into the bay are the extreme case, with Isabel in 2003 the local benchmark. The barometric record shows two active seasons: September and October for tropical systems, producing broad falls of fifteen to thirty hPa with long lead times, and December through March for coastal lows, which are sharper and usually accompanied by a hard wind shift. The bay and the nearby Atlantic moderate temperature year-round, keeping winters mild by inland standards and summers humid, with a sea-breeze front pushing inland most summer afternoons and firing storms once it reaches drier air over the interior.
What this means for you
The storms that matter here are measured by wind duration and tide as much as by depth. A falling current barometric pressure with a steady northeast wind is the combination worth acting on.