Chase Log from May 20, 2010
Friday, May 21st, 2010We knew that the day could be big for severe weather across Central Texas with everything coming together. There was a cold front to our north that moved south into a warm and juicy air mass that was in place and it was only a matter of time before storms erupted. A Tornado Watch was issued around noon and this is when I headed north to Hillsboro.

Dane Harrison Midlothian
While watching the cumulus clouds tower up, you could tell the cap was holding strong early in the afternoon. To my northeast towards Waxahachie, a storm was moving southeast and had a nice rotation. I headed up to Ellis county as a tornado warning was issued. The storm produced a brief tornado near Midlothian and later produced more funnels near Corsicana. I was about 10 minutes too late to see the twister but watched a beautiful wall cloudy move southeast. Click here to see that video!

I dropped south back to Hillsboro as storms started firing farther west along the cold front. In Hillsboro, there was a lot of scud going into the storm which can be mistaken for a wall cloud. However, it was not rotating. Eventually it did take on a lowering and wall cloud that moved towards Hubbard. Thankfully, no tornadoes came out of it.

Mike Andrews south of Valley Mills
More storms fired in Bosque county and these were the ones that moved into Waco. Both cells had lowerings and wall clouds but never produced a tornado. Why? We think the main reason is the lack of shear, or turning of winds, in the lower levels. You need strong winds blowing into the storms and we did not have that. Even though the whole storm was rotating, it was mainly in the mid and upper levels. This may the storms look very nasty but it looked worse than it really was.

We did have several nice hail cores with numerous hail reports up to golf ball size or larger. Once core passed west of Waco and hit the lake area hard. The other passed east of town down Hwy 6 towards Riesel. Eventually the cells merged together and dumped lots of hail in Falls county along Hwy 77. This is where my chase ended and I made it back to the station around midnight.
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