The National Weather Service uses a system called Valid Time Event Code (VTEC) to provide more accurate tracking of its watch, warning, and advisories. The IEM attempts to provide a high fidelity database of these products. The following table is a diagnostic providing the largest VTEC eventids (ETN) for each NWS Forecast Office, each phenomena and significance for the given year. Pro-tip: Use the search box to the upper right of the table to search for a specific WFO.
The following JSON(P) Webservice provided the data you
see presented on this page
Max VTEC ETN listing for 2020
Table generated at: 2020-09-20T18:17:32Z