Barometric Pressure Forecast for Southaven, Mississippi
Barometric pressure forecast for Southaven, Mississippi — on the DeSoto County loess bluffs at the southern edge of Memphis. See current barometric pressure and what it means for weather-sensitive people.
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Pressure and weather in Southaven
Southaven lies just over the Tennessee line on the windblown loess uplands that form the eastern rim of the Mississippi alluvial plain, with the Delta's flat farmland beginning a short distance west. The position matters, because this is the corridor where Gulf moisture streaming north up the Mississippi Valley meets cold fronts sweeping in off the Plains. That collision gives the region its reputation. This is Dixie Alley, and unlike the southern Plains it runs two severe seasons: a long primary one from March into May, and a second, shorter and often more dangerous one in November and December, when storms come after dark and tornadoes are frequently wrapped in rain. The barometric signature of those days is distinctive, with the trace sagging through the warm sector while the dew point climbs, then rising sharply with a hard wind shift as the line passes. Summer belongs to the subtropical ridge, hot and humid with an almost flat trace and afternoon storms. Winter occasionally delivers an ice storm when shallow cold air undercuts returning Gulf flow.
What this means for you
The warm sector ahead of a squall line is where pressure sags and humidity climbs together, often the most difficult stretch of the day. A barometric pressure forecast read alongside the dew point describes that build far better than either one alone.