‘Hot Dome’ retreats; cooler temperatures coming to southeast Nebraska

The upper-level “hot dome,” or high pressure, is moving to the east/southeast to start the workweek.

This will send the core of the heat to the Great Lakes and lower Mississippi River Valley regions of the country.  This also means chances for rain increase.

Under the upper-level high, air is sinking.  As the air sinks, it begins to compress, thus warming the air at the surface to higher levels.

The sinking air also aids in stifling the development of thunderstorms.  However, thunderstorms often prevail along the periphery of the “hot dome.”

That is the situation we are moving into for the remainder of the week, which will bring nearly a daily chance for showers and thunderstorms to southeast Nebraska.

This starts Tuesday with a chance for isolated showers and thunderstorms during the afternoon and evening.

Along with a cold front passing, this will produce “cooler” temperatures, with highs in the upper 80s to lower 90s.  I think many areas will notice a drop in the humidity by late afternoon.

– Chief Meteorologist John Dissauer