Visit our Programs:

PGCD - Whitedeer, TX
SOAR - Plains, TX
STWMA - Pleasanton, TX
TPWMA - Barstow, TX
WTWMA - San Angelo, TX

        Links of Interest:

Texas Dept. Licensing and Re

National Center for Atmos. Research

Southwest Research Institute

Desert Research Institute


Weather Modification Assoc

American Meteorological Society

National Weather Association

HOME About Us Analysis
The Texas Weather Modification Association in cooperation with the Texas A&M Agrilife Extension Center in Stephenville, TX produced a benefit cost analysis assuming 1 additional inch of precipitation during the convective season. The analysis showed that for every $1 put into a weather modification program, the return of investment, directly, is roughly $19 with a statewide impact upwards to $38. The analysis was based on benefits from reducing the need to irrigate as well as increases in dry land crops and grazing lands. The additional benefits not included in this report are the direct returns on river, lake and reservoir increases as well as enhanced aquifer recharge. The TWMA programs, on average, produce over an inch of additional water, therefore this benefit-cost analysis is certainly on the conservative side. Click on the image to the left for the full report.
Hygroscopic seeding in Texas has been done in the past, but has more recently become an operational tool to meteorologists across the state. To further understand how this type of seeding could impact clouds in Texas, a cloud climatology had to be developed across the four major weather modification programs across the state of Texas. Data such as cloud base heights, cloud base temperatures and warm cloud depths were collected over a 10 year span. This data was organized for each program, each year and categorized in different varieties in an attempt to understand the characteristics of clouds, geographically, yearly seasonally and monthly. This research project is nearly complete in hopes to having a final paper ready by mid-Spring.

Using an equation developed by Green and Bertettie (2012) of the Southwest Research Institute, recharge over long periods of time can be found across a karst aquifer in a semi-arid environment. These characteristics are what is needed to find recharge of the Edwards Trinity Aquifer across West Texas. Using the data analysis from Ruiz (2004-2013), recharge enhancement from weather modification can be found across the WTWMA target area based out of San Angelo. The findings showed an additional 100,000 a-f of additional recharge every year assuming precipitation surpasses 16.5".

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