Observed at 02:00, Saturday 1 February BBC Weather in association with MeteoGroup, external All times are Central Standard Time (America/Chicago, GMT-6) unless otherwise stated.
Higher pressure is usually associated with sunny weather, lower pressure with stormy weather. The temperature to which the air needs to be cooled for moisture to condense, for example, as dew.
The National Weather Service issued a winter weather advisory at 2:55 p.m. on Saturday valid from Sunday 10 a.m. until Monday 1 a.m. for Susquehanna and Wyoming counties.