Craig and Brian are having difficulties handling hail threat areas for a cluster of separate multicells that are sharing cold pool but not reflectivity areas. They could massively increase workload and issue a threat area for each storm or they could include the whole area in a perimeter. Their compromise is two threat areas southeast of LBB, the northwestern one includes a loose SW-NE orientation of a subcluster of multicells, and then another to the east more oriented east-west.

One cell in the middle of the eastern cluster had a short-lived TVS which Craig thought could’ve formed a brief tornado. But the signature disappeared before he could react. Does he issue a tor threat based on the possibility of another one? They don’t have a good conceptual model to issue a threat area for now.

Jim LaDue (EWP Weekly Coordinator, 5-9 May)