Good day Mr. Belleza, To answer your questions: 1. Yes a given site can have multiple warnings in effect at the same time and these could, though not necessarily, be covered under the same warning message. Here is how the regulations are worded for situations of multiple warnings: If a weather situation warrants two or more types of warnings to be in effect at the same time, a general term like "Winter storm warning" is encouraged to avoid the confusion of multiple warning types being carried at the same time. However, if no single warning type can describe a situation, a maximum of two types of warnings or watches may be combined in the same statement. In this case, the terms "Warning" or "Watch" shall be used in the singular identifying the situation as one warning. For example: Rainfall and wind warning for: Calgary. 2. If I understand the question correctly, a single warning would not cover separate and distinct events. A warning could, as an example, have an effective period covering multiple severe thunderstorms, but would not cover, say, two separate high wind events if these resulted from separate meteorological events. I hope that answers the questions. Regards, Tom Robinson Planning, performance measures and external relations Planification, mesures de performance et relations externes Canadian Meteorological Centre/Centre Météorologique Canadien Environment Canada / Environnement Canada ________________________________ From: Belleza, Jeremy [mailto:Jeremy.Belleza@fortisalberta.com] Sent: 28 June, 2010 14:01 To: dd_info [mailman] Subject: data available on the datamart Hi, Quick question about your xml tags: 1. Can a site data have multiple warnings? 2. Can warnings have multiple events? Thanks