A fun, "local" chase alongside Scott Kampas for most of the day. We later met up with Andrew Pritchard (and his girlfriend Tia), Mark Sefried, Darin Kaiser, and Brad Emel near Illiopolis about halfway through the day.
Scott met me at my house in Canton around 3pm. We had chatted briefly the night before about today's prospects along the WF in Illinois (we thought that, given sufficient instability gradients, it was the place to be), but both of us had early-day commitments that kept us from sitting along the boundary for most of the day; Scott with work, me with class. I kept an eye on things, talking at various points throughout the morning with Pritchard.
As it became increasingly clear that moisture would be sufficient for the day, I began thinking of the best way to chase. Andrew shot down I-72 at around 1pm, and I sat indecisively in front of my computer screen until close to 2. At that point, I essentially said, "To hell with my last class!" and effectively pulled the fence post out of my rear, and came up with a plan. I'd head to Canton (my hometown), where I would gas up, eat, re-evaluate data, and fix my radio that had given me problems toward the end of my chase on Wednesday.
I only got through one of those before Scott arrived. He "helped" me fix my radio (I use quotation marks as he mostly did all the real work; I just got the materials), we got gas on the way out of town, and kept our eyes fixed to the radars on our phones as we did so -- neither of us having mobile data at this time. Finally, by close to 3:30, we were on our way toward Jacksonville.
But as we got closer, it became apparent that we'd need to be further east. A tail-end storm had formed near UIN, and it became more and more obvious that it would intersect the boundary where the better winds were. We rerouted to Springfield, and shot down 97. We went about 10 miles south of Petersburg, then went toward Pleasant Plains, where we got our first real view of the storm that had been tornado-warned for the better part of an hour. However, the storm impressed neither of us visually, and we bailed on it for more discrete activity to the south (closer to I-72) that was on the warm side of the front.
Soon, though, that was ingested into the main cell, which became the dominant storm -- a photogenic HP that remained outflow-dominant for most of its life. Although it retained its tornado warning for almost three more hours, it stayed on the cool side of the boundary for nearly its entire supercellular lifespan -- some four hours. Because of this, the storm never could really get its act together, though it tried numerous times to do so.
The closest it came to tornado potential was what Andrew called the "stormtrack-nado," where it engulfed all of us in dust and grit as the mesocyclone passed overhead just moments after Scott and I drove underneath to the east side. It exhibited especially tight rotation as we did so, but the area of interest remained "wispy," as Scott called it at the time, and somewhat high-based, and continued rotating in that fashion at the time of the weak ground circulation on Old 36, just east of Illiopolis.
It was at that time that we jumped in the Sefried/Kaiser-Emel-Pritchard/Ebert caravan and continued following it eastward, stopping numerous times to photograph the photogenic storm. We witnessed several small towns along the way -- with sirens blaring but without power -- and their respective citizens watching the cell from their porches, looking for "them twistin' clouds."
They found some, as did we along the way, but nothing more than tight, high-based rotation that couldn't get its act together. Had it been 20 miles south, I have little doubt we would have witnessed a tornadofest. But such is the chase season in 2009. If's and but's, but no candy. And no nuts.
We finally gave up on the storm near Champaign just before reaching I-57. By that time (and for the better part of an hour before), the storm had become a small, potent bowing segment, producing some reports of winds as high as 80mph driving golf ball-hail through car windows. We managed to avoid this.
Taking some photos before we did so, we parted ways and headed for home. Brad and Andrew/Tia had short trips home from here, but ours was longer.
Somehow, I can never manage a short jaunt home after a chase.
Near Decatur, IL as it drops golf balls +
Stitched panorama of the cell as we sat near I-57, shortly before calling off the chase.