Hail polygon’s being created for the DDC cell within the multicell. Brian’s adding numbers to the new warning. Bill’s not confident there’s hail in there. We purposely ignored this cell before now.

0105utc: Bill’s learning storm motion creation in WDSS-II. Done in < 1 minute.

Initial prob hail of 75%, trend probability= 65%, a little lower. Bill and Brian are worried about new stuff forming ahead of the line along that prestorm boundary. They’re deleting the old threat area.

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