Storm Highway by Dan Robinson
Storm chasing, photography and the open roadClick for an important message
Home | Blog Index | Blog Archives | Christianity & Faith Essays | Storm Chasing Essays

                   Saturday, June 7, 2014 11:55PM CST

St. Louis metro area tornadoes - June 7, 2014

By DAN ROBINSON
Storm Chaser/Photographer
25 Years of Storm Chasing
Important Message
Dan's RSS/XML feed
Dan's Twitter feed
Dan's Google Plus page
Dan's YouTube Video Channel

HD CHASE VIDEO 1: Tornado at Hwy 370 and Earth City Expressway, St. Louis
HD CHASE VIDEO 2: Tornado south of Highland, IL
HD CHASE VIDEO 3: Slow motion clip of 737 jet flying near/through tornado

MORE EVENT DETAILS: StormTrack MISC thread on 6/7/14 mini-outbreak of tornadoes

I learned quickly after moving to the Midwest never to ignore MCVs or surface lows here. I observed two tornadoes in the St. Louis metro area today with supercells that fired in the southeast quadrant of a remnant MCV from last night's storms on the Plains. The MCV managed to entrain surface-based instability behind an earlier line of convection that cleared out by mid-afternoon.

I caught the first tornado at the intersection of Highway 370 and Earth City Expressway east of St. Charles. The wall cloud was wound up tight and produced intermittent vortices on the ground as it approached from the south. The tornado hit an area of industrial warehouses south of 370 with debris flying, then crossed the highway and eventually became fully condensed for a brief time. A Southwest Airlines 737 jetliner on approach to Lambert Airport passed directly through the tornado circulation, with the aircraft visibly rolling to the left briefly.

Rotating wall cloud and funnel with intermittent ground vortices crossing the Missouri River at St. Charles. The building in the background is the Ameristar casino next to I-70:

Tornado impacting warehouses south of Hwy 370:

Debris and ground circulation spray in field south of Hwy 370:

Southwest 737 jet and tornado debris:

Funnel beginning to condense north of Hwy 370:

Fully condensed north of Hwy 370:

I caught the second tornado between Highland and Trenton, Illinois with another low-topped storm. This tornado was never fully condensed, but had periodic ground circulations visible as debris/spray on the wet fields. It was essentially the size/intensity of a dust devil at the ground. Since this tornado was very weak, I approached it and let it cross within 10-20 feet of my vehicle. You can see the circulation move through the corn on the right side of the road in my dashcam video (linked above).

So far this year, I have seen twice as many tornadoes in Missouri and Illinois (6) as I have in the Great Plains (3).

The following comments were posted before this site switched to a new comment system on August 27, 2016:

Nice! I just saw that on news 4. Watch for Cold Air funnels around lake of the Ozarks as that low isn't too far off. I've only seen one of those ever.
- Posted by Tim

25 Years of Storm Chasing
Important Message
Dan's RSS/XML feed
Dan's Twitter feed
Dan's Google Plus page
Dan's YouTube Video Channel

This web site is made possible by support from CIS Internet.
CIS Results-Oriented Internet Marketing

GO: Home | Storm Chasing | Photography | Extreme Weather Library | Stock Footage | Blog

Featured Weather Library Article:

Lightning myths
Take a look at these common lightning myths. You might be surprised!
More Library Articles

All content © Dan Robinson. All usage requires a paid license - please contact Dan for inquiries.

Web Site Design and Internet Marketing by CIS Internet