weathermaker

plural weathermakers · alternative weather maker · alternative weather-maker

1. One who attempts to influence the weather by magic; one who performs a weathermaking ritual.

   A death, a drought ascribable to the sorcery of a weathermaker, a cyclone and so forth could always excite the natives to acts of revenge, and consequently no man could leave his district unarmed […]

   1999, Felix Speiser, Ethnology of Vanuatu, page 211

2. informalA storm; a meteorological event that creates unpleasant weather.

   At first glance, that looks like a severe weather maker to our south, with the potential to move into our part of the world. Worth watching.

   2017 January 14, “Saturday Afternoon Update”, in Kentucky Weather Center

3. informalA geographical feature that tends to cause weather to form.

   It's right on the shore of a body of water that is considered Central New York's principal weather-maker. That makes this place the perfect seasonal bellwether: When it opens for the season, spring is here. When it closes, winter's not far behind.

   2010 August 4, “Answers to Quiz de Cuisine, our test of Syracuse-area restaurant knowledge”, in Syracuse.com