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Reason for today's slow clearing - KTBS.com - Shreveport, LA News, Weather and Sports

Reason for today's slow clearing

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Tuesday's weather balloon data analysis Tuesday's weather balloon data analysis

Our last strong weather disturbance departed the ArkLaTex last night.  In it's wake, a fairly pronounced ridge developed where the jet stream bowed up to the north.  Beneath this weather feature, sinking air or subsidence caused tremendous drying and warming above the boundary layer or mixed air close to the ground.

Thus, a significant temperature inversion set up where it warmed 5 degrees C (temperature) and dried out some 30 degrees C (dew point or moisture) as you ascended about a thousand feet in the atmosphere.  Normally, it should cool as you rise in altitude.

This inversion helped trap moisture from last night's rains and wintry mix below it with the stratus cloud cover.  It took all the way into the early afternoon for winds from just above the inversion plus the sun breaking through the clouds to help disperse them.

Today's phenomena is typical in the ArkLaTex during the colder months.

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