National Weather Service United States Department of Commerce

Valid Time Event Code

Valid Time Event Code (VTEC) enables weather providers and vendors to automate and tailor the product stream delivered to their clients. This capability, in turn, allows customers to select the specific message types they want to receive. VTEC will help allow automated dissemination of critical weather information through through technologies such as paging systems and television message crawl systems.

VTEC Overview

VTEC-related NWS Instructions (NWSIs)

Hydrologic VTEC Information


(For NWS Offices only) VTEC Issues: Operations and Product Formatters