[GUEST ACCESS MODE: Data is scrambled or limited to provide examples. Make requests using your API key to unlock full data. Check https://lunarcrush.ai/auth for authentication information.]  Chris Martz [@ChrisMartzWX](/creator/twitter/ChrisMartzWX) on x 139.8K followers Created: 2025-07-09 17:45:24 UTC Hi Rachel. I am a meteorologist. ๐ช๏ธ Cloud seeding had nothing to do with the flooding in Texas last week and here's why. ๐๐ก๐๐ญ ๐ข๐ฌ ๐๐ฅ๐จ๐ฎ๐ ๐ฌ๐๐๐๐ข๐ง๐ ๐๐ง๐ ๐ฐ๐ก๐๐ญ ๐ข๐ฌ ๐ข๐ญ๐ฌ ๐ฉ๐ฎ๐ซ๐ฉ๐จ๐ฌ๐? Cloud seeding is a type of โweather modificationโ involving injection of chemicalsโusually silver iodide (AgI) or dry ice (solid COโ)โinto an ๐๐ฅ๐๐ ๐ก๐๐๐ cloud by aircraft to augment the formation of larger liquid water droplets and/or ice crystals. If successful, this can slightly enhance a cloud's precipitation. ๐ง๏ธ This practice has routinely been executed in the U.S. by both the federal government and private contractors since the 1940s. The primary objective of these missions is to enhance rainfall or snowpack in drought-stricken areas to improve irrigation for local farmers or disperse fog banks at airports to prevent travel disruptions. ๐ฑ ๐๐จ๐ฐ ๐๐จ๐๐ฌ ๐๐ฅ๐จ๐ฎ๐ ๐ฌ๐๐๐๐ข๐ง๐ ๐ฐ๐จ๐ซ๐ค? Clouds are composed of tiny liquid water droplets or ice crystals (not invisible gaseous water vapor, like many think) called โ๐ฆ๐๐๐๐๐๐ก๐๐๐๐ (hence the term โmeteorology.โ However, in order for water vapor in the atmosphere to condense (that is, go from gas to liquid) or deposit (go from gas to solid), it requires a surface called โcloud condensation nucleiโ (CCN). CCN are small particles with diameters of about XXX ฮผm (0.0002 mm) which are hygroscopic, meaning that they act as collection sites for condensation. Things like specks of dust, salt crystals or smoke particles can act as CNN when present in a moist air mass. This added solute effect lowers the saturation vapor (i.e., the partial pressure of water vapor that is required for the atmosphere to be in equilibrium, that is the rate of evaporation equals the rate of condensation), making it easier for condensation to occur. โ๏ธ The vast majority of clouds do not precipitate since their droplets or ice crystals stay too small for Earth's gravitational acceleration to pull them towards the ground and remain suspended due to updrafts. Thus, when hygroscopic particles like silver iodide or dry ice are introduced, they can boost droplet or ice crystal formation in clouds. ๐ซง However, most seeding experiments find it increases rainfall by only up to 15%, but most estimates are less than that. ๐๐ฌ ๐๐ฅ๐จ๐ฎ๐ ๐ฌ๐๐๐๐ข๐ง๐ ๐๐จ๐ง๐ ๐ข๐ง ๐๐๐ฑ๐๐ฌ, ๐๐ง๐ ๐ฐ๐๐ซ๐ ๐ฌ๐ฎ๐๐ก ๐จ๐ฉ๐๐ซ๐๐ญ๐ข๐จ๐ง๐ฌ ๐๐จ๐ง๐๐ฎ๐๐ญ๐๐ ๐จ๐ง ๐ญ๐ก๐ ๐ฌ๐ญ๐จ๐ซ๐ฆ๐ฌ ๐ฉ๐ซ๐จ๐๐ฎ๐๐ข๐ง๐ ๐ญ๐ก๐ ๐๐ฅ๐จ๐จ๐๐ฌ? Yes, โweather modificationโ is done in Texas. โ๏ธ However, there are strict laws and regulations in the Lone Star State about exactly where and when it can be conducted. For instance, cloud seeding is prohibited in systems where the National Weather Service (NWS) has posted a flash flood and/or severe thunderstorm warning. โ ๏ธ The July 2nd cloud seeding operation conducted by Rainmaker Technology Corporation, which has been singled out by social media users, could not in any way have caused or contributed to the flash flooding along the Guadalupe River on Friday morning. As I said before, only ๐๐ฅ๐๐ ๐ก๐๐๐ clouds can be seeded, and this mission was carried out two days before the floods some XXX miles SOUTHEAST of San Antonio. And, weather models had indicated flooding potential days in advance. So, if cloud seeding was responsible for this, numerical weather prediction models would not have picked up on it. ๐ ๐ข๐ง๐๐ฅ ๐ซ๐๐ฆ๐๐ซ๐ค๐ฌ: By suggesting cloud seeding is causing floods like the one in the Texas Hill Country over the weekend, or the recent floods in New Mexico and Chicago, people on the right are admitting to a false premise that flooding today is more common and extreme than it was in the decades before, when there is little to no evidence of that being the case, at least in Texas. cc: @RCamposDuffy  XXXXXX engagements  **Related Topics** [uae](/topic/uae) [countries](/topic/countries) [consent](/topic/consent) [agi](/topic/agi) [rachel](/topic/rachel) [Post Link](https://x.com/ChrisMartzWX/status/1943003567452766268)
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Chris Martz @ChrisMartzWX on x 139.8K followers
Created: 2025-07-09 17:45:24 UTC
Hi Rachel.
I am a meteorologist. ๐ช๏ธ
Cloud seeding had nothing to do with the flooding in Texas last week and here's why.
๐๐ก๐๐ญ ๐ข๐ฌ ๐๐ฅ๐จ๐ฎ๐ ๐ฌ๐๐๐๐ข๐ง๐ ๐๐ง๐ ๐ฐ๐ก๐๐ญ ๐ข๐ฌ ๐ข๐ญ๐ฌ ๐ฉ๐ฎ๐ซ๐ฉ๐จ๐ฌ๐?
Cloud seeding is a type of โweather modificationโ involving injection of chemicalsโusually silver iodide (AgI) or dry ice (solid COโ)โinto an ๐๐ฅ๐๐ ๐ก๐๐๐ cloud by aircraft to augment the formation of larger liquid water droplets and/or ice crystals. If successful, this can slightly enhance a cloud's precipitation. ๐ง๏ธ
This practice has routinely been executed in the U.S. by both the federal government and private contractors since the 1940s. The primary objective of these missions is to enhance rainfall or snowpack in drought-stricken areas to improve irrigation for local farmers or disperse fog banks at airports to prevent travel disruptions. ๐ฑ
๐๐จ๐ฐ ๐๐จ๐๐ฌ ๐๐ฅ๐จ๐ฎ๐ ๐ฌ๐๐๐๐ข๐ง๐ ๐ฐ๐จ๐ซ๐ค?
Clouds are composed of tiny liquid water droplets or ice crystals (not invisible gaseous water vapor, like many think) called โ๐ฆ๐๐๐๐๐๐ก๐๐๐๐ (hence the term โmeteorology.โ However, in order for water vapor in the atmosphere to condense (that is, go from gas to liquid) or deposit (go from gas to solid), it requires a surface called โcloud condensation nucleiโ (CCN).
CCN are small particles with diameters of about XXX ฮผm (0.0002 mm) which are hygroscopic, meaning that they act as collection sites for condensation. Things like specks of dust, salt crystals or smoke particles can act as CNN when present in a moist air mass. This added solute effect lowers the saturation vapor (i.e., the partial pressure of water vapor that is required for the atmosphere to be in equilibrium, that is the rate of evaporation equals the rate of condensation), making it easier for condensation to occur. โ๏ธ
The vast majority of clouds do not precipitate since their droplets or ice crystals stay too small for Earth's gravitational acceleration to pull them towards the ground and remain suspended due to updrafts. Thus, when hygroscopic particles like silver iodide or dry ice are introduced, they can boost droplet or ice crystal formation in clouds. ๐ซง
However, most seeding experiments find it increases rainfall by only up to 15%, but most estimates are less than that.
๐๐ฌ ๐๐ฅ๐จ๐ฎ๐ ๐ฌ๐๐๐๐ข๐ง๐ ๐๐จ๐ง๐ ๐ข๐ง ๐๐๐ฑ๐๐ฌ, ๐๐ง๐ ๐ฐ๐๐ซ๐ ๐ฌ๐ฎ๐๐ก ๐จ๐ฉ๐๐ซ๐๐ญ๐ข๐จ๐ง๐ฌ ๐๐จ๐ง๐๐ฎ๐๐ญ๐๐ ๐จ๐ง ๐ญ๐ก๐ ๐ฌ๐ญ๐จ๐ซ๐ฆ๐ฌ ๐ฉ๐ซ๐จ๐๐ฎ๐๐ข๐ง๐ ๐ญ๐ก๐ ๐๐ฅ๐จ๐จ๐๐ฌ?
Yes, โweather modificationโ is done in Texas. โ๏ธ
However, there are strict laws and regulations in the Lone Star State about exactly where and when it can be conducted. For instance, cloud seeding is prohibited in systems where the National Weather Service (NWS) has posted a flash flood and/or severe thunderstorm warning. โ ๏ธ
The July 2nd cloud seeding operation conducted by Rainmaker Technology Corporation, which has been singled out by social media users, could not in any way have caused or contributed to the flash flooding along the Guadalupe River on Friday morning.
As I said before, only ๐๐ฅ๐๐ ๐ก๐๐๐ clouds can be seeded, and this mission was carried out two days before the floods some XXX miles SOUTHEAST of San Antonio. And, weather models had indicated flooding potential days in advance. So, if cloud seeding was responsible for this, numerical weather prediction models would not have picked up on it.
๐ ๐ข๐ง๐๐ฅ ๐ซ๐๐ฆ๐๐ซ๐ค๐ฌ:
By suggesting cloud seeding is causing floods like the one in the Texas Hill Country over the weekend, or the recent floods in New Mexico and Chicago, people on the right are admitting to a false premise that flooding today is more common and extreme than it was in the decades before, when there is little to no evidence of that being the case, at least in Texas.
cc: @RCamposDuffy
XXXXXX engagements
