Barometric Pressure Forecast for Prosper, Texas
Barometric pressure forecast for Prosper, Texas — on the Blackland Prairie in Collin County, north of the Dallas-Fort Worth metroplex. See current barometric pressure and what it means for weather-sensitive people.
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Pressure and weather in Prosper
Prosper sits at about 700 feet on the open Blackland Prairie north of Dallas, on gently rolling dark-soil farmland that has been filling with subdivisions for two decades. There is no terrain to shelter it in any direction, and that matters because North Texas lies where three air masses meet: hot dry air from the desert southwest, warm moist air off the Gulf, and cold continental air spilling south down the Plains with nothing at all to slow it. Spring is the violent season. The dryline sets up to the west, moisture returns from the Gulf, and supercells develop through the afternoon and track northeast across Collin County, making this one of the highest hail-risk areas in the country. The barometric falls that precede those setups are moderate, fifteen to twenty-five hPa as a Plains low deepens over the Texas panhandle, but the change of air mass behind them is drastic. Autumn brings a second and smaller severe season. Winter's characteristic event is the blue norther, an Arctic front crossing with a wall of cloud on the northern horizon, a wind shift to the north inside minutes and a temperature drop of thirty or forty degrees in a few hours, accompanied by a sharp rise rather than a fall. Summer is the flat season, with a heat ridge parked overhead, the reading high and still, and day after day above a hundred degrees.
What this means for you
Here the sharp rise behind a norther can be as noticeable as the fall ahead of a storm. Watching the barometric pressure forecast for movement in both directions is the habit that fits this climate.