Storm Reports, Part 2: How Do We Use Them? – September 2024
Storm Reports: how do we use them? (Part 2) In Part 1 – Storm Reports: Where Do They Come From – we discussed the various sources of obtaining storm report information. In Part 2 we will show an example of how Haag Certified Consulting Meteorologists can supplement official storm reports with information provided by other hail report databases to increase detail in the analysis of a complex severe weather event. A recent hail event near St. Louis, Missouri highlighted the utility of using Preliminary Local Storm Reports (PLSRs) and Community Collaborative Rain, Hail, and Snow (CoCoRaHS) reports in analyzing a hailstorm. The official National Centers for Environmental Information (NCEI) Storm Events Database entries for this event contained a handful of hail reports across the St. Louis metro, some of which were entered into the database as hail swaths, despite the NWS receiving dozens of additional hail reports. Keep in mind