The Brazilian National Institute of Meteorology (INMET, from the Portuguese "Instituto Nacional de Meteorologia'') is the Brazilian government agency responsible for monitoring, analysing and forecasting weather and climate. It provides meteorological warnings to be used by the local-level municipal authorities. Data Content INMET periodically publishes data on its website and provides them via XML RSS Feed. This dataset was collected from the RSS feeds mentioning the Brazilian cities of Belém located in the state of Pará, Belo Horizonte in Minas Gerais state, Porto Alegre in Rio Grande do Sul state, Rio de Janeiro in Rio de Janeiro state and São Paulo in São Paulo state from July/2021 to July/2022. Data Structure The description of columns collected from INMET warnings and stored in the warnings file (inmet-meteorological-warnings-1658070001.csv) is presented below. The warnings issued by INMET follow the Common Alerting Protocol (CAP). CAP provides an open, non-proprietary digital message format for all types of alerts and notifications [Standard, OASIS (2010). Common Alerting Protocol Version 1.2. Jul, 1, pp. 1-47. http://docs.oasis-open.org/emergency/cap/v1.2/CAP-v1.2-os.html ]. Columns: CITY: Name of the city for which the warning was issued. STATE: The Brazilian acronym for the state in which the city is located, for example, MG for Minas Gerais. CITYCODE: Unique numeric code for the city for which the warning was issued. IDENTIFIER: Unique identifier to INMET warning. RESPONSETYPE: Reaction to the warning. URGENCY: Urgency for taking action. For example, “Prepare”. SEVERITY: Severity of the meteorological event. For example, “Future” CERTAINTY: How likely is the event to happen? For example, “Observed” - Determined to have occurred or to be ongoing; “Likely” - (p > ~50%); “Possible” - Possible but not likely (p <= ~50%). WARNING: Standardized type of warning. For example, "Aviso de Acumulado de Chuva", "Aviso de Tempestade", "Aviso de Declínio de Temperatura". TIMESTAMPDATEONSE: Unix timestamp of the minimum time at which the event is expected to start. TIMESTAMPDATEEXPIRES: Unix timestamp of the maximum at which the event is expected to occur or the warning expires. COLORRISK: Event colour in hexadecimal following the INMET nomenclature, with yellow meaning potential danger, orange indicating danger, and red indicating great danger. BASESOURCE: INMET RSS XML file from which the warning was extracted.