Wednesday, June 30, 2021

Wednesday afternoon showers produce a few funnel clouds


The threat for severe weather, or even thunderstorms, was fairly low Wednesday afternoon.  But a few showers during the afternoon did produce a couple of funnel clouds in Stephenson County. 

These types of funnel clouds are not associated with supercell thunderstorms that produce tornadoes and rarely reach the ground.  Often times they extend a couple hundred feet from the parent cloud, spin like a top and then lift back up after a few minutes.  They form along some of sort of convergent (wind coming together) or frontal boundary, underneath showers or thunderstorms.  They are short-lived because there are no upper level dynamics to help sustain either the thunderstorm or funnel cloud. 


Isolated showers will continue to move to the south this evening, leaving us with a partly cloudy sky overnight.

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