July 18th 2015 – Weak Tornado Near the Wisconsin Border

Dec 21, 2015 Comments Off on July 18th 2015 – Weak Tornado Near the Wisconsin Border by

Summary: Chase a pair of supercells in a weakening phase, catching what is probably the weakest tornado I will ever see. Stats: Tornadoes: 1 Hail: .25″ Wind: n/a The Forecast: Zonal flow regime with shortwave energy moving through it. Sufficient deep moisture in place in typical summer-like airmass. Moderate speed shear present in southern end […]

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July 13th Northern Illinois Supercell

Dec 19, 2015 Comments Off on July 13th Northern Illinois Supercell by

Summary: Tracked Classic looking supercell from birth noting dramatic RFD structure but ultimately failed to produce tornado Stats: Tornadoes: 0 Hail: .75″ (Penny) Wind: None The Forecast: Extreme dewpoint values approaching and exceeding 80 leading to extreme CAPE values in northwest flow regime. Outflow boundary from morning MCS would set up across the area and […]

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More Severe Weather for Chicago. July 1st 2012

Jul 01, 2012 Comments Off on More Severe Weather for Chicago. July 1st 2012 by

Storms erupted to life once again the morning of Sunday, July 1st for the Chicagoland area thanks to a gravity wave caused by collapsing storms in Iowa colliding with a frontal boundary that has been wobbling across the area the past couple days. The image below shows how it all happened. Click for full size. […]

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