Convection began along a low level PW gradient across NW OK per GLM Flash Extent Density. Expected forecast: Based on steering flow, the storms should move into a more moisture rich environment and expand in coverage.
![](https://inside.nssl.noaa.gov/ewp/wp-content/uploads/sites/22/2019/05/LayerPW_GLM2027Z_13May.png)
A little while later…Storms continued to expand eastward along the gradient into the more moisture rich environment.
![](https://inside.nssl.noaa.gov/ewp/wp-content/uploads/sites/22/2019/05/LayerPW_GLM2228Z_13May.png)
-Tempest Sooner