Barometric Pressure Forecast for Plum, Pennsylvania
Barometric pressure forecast for Plum, Pennsylvania — in the Allegheny hills east of Pittsburgh, under one of the cloudiest skies in the country. See current barometric pressure and what it means for weather-sensitive people.
Download Pressure Pal to track barometric pressure and get migraine alerts for Plum and your area.
Pressure and weather in Plum
Plum sits on the dissected plateau east of Pittsburgh, a landscape of steep wooded hillsides and narrow hollows draining toward the Allegheny River just to the north. Western Pennsylvania has one of the lowest annual sunshine totals in the United States, and the reason is geography: moisture off the Great Lakes rides southeast on cold-season northwest winds and is forced upward over the Allegheny front, producing persistent low cloud and drizzle for weeks at a time between the actual storm systems. The storms themselves come from two directions. Great Lakes and Ohio Valley lows track northeast past the region with a steady fall and a brisk rise, while coastal storms occasionally back far enough west to bring heavy snow to the ridges. The hilly terrain adds real local variation, with valley bottoms colder and foggier and hilltops windier, so two neighbourhoods a mile apart can see different precipitation types in the same storm. Summers are humid with afternoon thunderstorms and a barometer that hardly moves for days. Remnant tropical moisture reaching the ridges has produced serious flash flooding in the hollows. A barometric pressure forecast for Plum is most useful from November through April.
What this means for you
Can barometric pressure cause headaches? Long grey stretches here come with high, flat pressure, which is a useful control against the storm days when the barometer actually moves. Use Pressure Pal as a headache tracking app and check whether your bad days follow the pressure or simply follow the gloom.