This is an experiment to see if barometric pressure and its time derivative can be correlated with weather conditions for up to 12 hours . Data is from Dark Sky relayed through an ESP8266 running Arduino code. Weather is in Centreville, Virginia.
Environmental conditions in the Make Hack Void building in metric units. Humidity is relative and air pressure in hPa is adjusted to sea level. This data is acquired with an ESP8266 Wemos using the source code at https://github.com/kentaylor/esp8266-weat