Splitting storm

Evolution of a Splitting Thunderstorm, With the Left Moving Storm Visibly Weaker

A splitting storm is a thunderstorm that splits into two separate storms with divergent paths. One storm is referred to as the left mover, and one is referred to as the right mover. In the northern hemisphere, the left mover is more likely to weaken and dissipate, but on rare occasions will intensify into a very severe and anticyclonically (clockwise) rotating supercell thunderstorm. The right moving storm has the highest potential of becoming a severe thunderstorm or a supercell. This type of storm development is most likely to occur in conditions of moderate to high instability, with strong unidirectional wind shear.

References

General references

• www.srh.noaa.gov