SOUTH TEXAS WEATHER MODIFICATION ASSOCIATION

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South Texas Weather Modification Association is a non-profit organization consisting of several water districts and a county commissioner's court. The association first formed in 1996 and conducted its first seeding mission the following year. After a decade of existence, the STWMA, based in Pleasanton, continues to perform seeding operations over multiple counties in south-central Texas. A map of the project area can be found here

Feel free to navigate around the website, whether it's to check our radar image for current activity, to get the local forecast and current conditions for the target area, or to learn more about cloud seeding.

The 2013 Final Report of operations by the STWMA can be viewed here.