Storm Chase Case | Chester, OK Tornadoes | April 16, 2017

For our second ever video of this type, we’re taking a look at a day that would challenge any chaser to pick out the right target. This is another Slight risk/2% tornado risk with the dryline in the Texas Panhandle being outlined for a supercell risk.

However, because some might call us renegades, we opted for a different target in NW Oklahoma: an outflow boundary.

As you may know if you’ve followed our thoughts on forecasting in the past, outflow boundaries are our muse — but they’re not magic. When outflow boundaries work, you can end up with a tornadopalooza. When they don’t, you can end up with a mess of semi-organized storms with no hope of seeing anything worthwhile.

In this storm chase case, we’re going to look at outflow boundaries and when its a good idea to target them. Also, we’re taking a look at other forecast considerations such as dewpoints, temp-dewpoint spreads, and the impact of morning storms on a target.

April 16, 2017 Storm Chase | Tornadoes near Chester, Oklahoma

This was a pretty nuanced day for forecasting, with a subtle outflow boundary draped across NW OK with shear plenty capable of producing supercells. However, weather models were not picking up on this environment very well with everything pointing towards the TX Panhandle. Regardless, we targeted the OFB and was rewarded with a tornado producing supercell near Chester, OK. This was an excellent chase day and a good example of a target that required some observational analysis to come through.