Cloud seeding aircraft dispersing flares over mountain range
Real-Time Monitoring

ChemTrail.app

US Cloud Seeding Operations Tracker

Track cloud seeding aircraft, monitor active programs, and explore comprehensive data on weather modification operations across the United States.

Active Flights

0

Operators

0

Aircraft Types

0

Chemicals

0

Active Programs

0

IMPORTANT

Environmental Risks

What are the known and unknown risks of spraying chemicals into our atmosphere? Explore impacts on human health, soil ecosystems, and wildlife.

Human Health Soil Impact Wildlife
Read the full risk assessment
IMPORTANT

Legal Ramifications

Cloud seeding programs operate with no public consent. Who gave them the right to spray chemicals into our skies? Explore the constitutional questions and regulatory gaps.

Civil Rights Consent Legal Gaps
Explore the legal analysis

Live Flight Tracking

Full Map

Active Flights

N260HS
active

Beechcraft King Air

Sierra Nevada Snowpack Program

21,000 ft
247 kts
173°
California
Chemicals (3)
AgI•Silver IodideKI•Potassium IodideCO₂ (solid)•Dry Ice
HumanSoilWildlife
XCN81
returning

Modified Twin Turboprop

Precipitation Enhancement - California

13,250 ft
262 kts
163°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
N991GT
active

Beechcraft King Air

Precipitation Enhancement - California

10,200 ft
226 kts
335°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
ATN3300
returning

Modified Twin Turboprop

Precipitation Enhancement - California

10,050 ft
270 kts
258°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
00000000
active

Beechcraft King Air

Precipitation Enhancement - California

12,525 ft
223 kts
301°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
N194TR
active

Beechcraft King Air

Cloud Seeding Research Flight - North Dakota

20,000 ft
232 kts
294°
North Dakota
Chemicals (2)
AgI•Silver IodideBiI₃•Bismuth Tri-iodide
HumanSoilWildlife
N407TK
active

Cessna / Piper Turboprop

Cloud Seeding Research Flight - Wyoming

9,250 ft
159 kts
111°
Wyoming
Chemicals (2)
AgI•Silver IodideBiI₃•Bismuth Tri-iodide
HumanSoilWildlife
FFT2016
active

Modified Twin Turboprop

Sierra Nevada Snowpack Program

14,825 ft
356 kts
90°
California
Chemicals (3)
AgI•Silver IodideKI•Potassium IodideCO₂ (solid)•Dry Ice
HumanSoilWildlife
RKJ16
returning

Beechcraft King Air

Fog Dispersal / Low-level Seeding - California

5,950 ft
236 kts
313°
California
Chemicals (3)
NaCl•Sodium ChlorideCaCl₂•Calcium ChlorideC₃H₈•Liquid Propane
HumanSoilWildlife
N3221M
returning

Cessna / Piper Turboprop

Fog Dispersal / Low-level Seeding - Colorado

6,200 ft
140 kts
359°
Colorado
Chemicals (3)
NaCl•Sodium ChlorideCaCl₂•Calcium ChlorideC₃H₈•Liquid Propane
HumanSoilWildlife
CSB594
returning

Beechcraft King Air

Cloud Seeding Research Flight - Colorado

8,475 ft
210 kts
267°
Colorado
Chemicals (2)
AgI•Silver IodideBiI₃•Bismuth Tri-iodide
HumanSoilWildlife
FLC78
active

Beechcraft King Air

Fog Dispersal / Low-level Seeding - Colorado

6,750 ft
193 kts
237°
Colorado
Chemicals (3)
NaCl•Sodium ChlorideCaCl₂•Calcium ChlorideC₃H₈•Liquid Propane
HumanSoilWildlife

Chemicals Currently Being Dispersed

Full Database
Silver IodideAgI

Dispersed by: N260HS, XCN81, N991GT, ATN3300, 00000000, N194TR, N407TK, FFT2016, CSB594

Human: At typical cloud seeding concentrations (nanograms per liter in precipitation), silver iodide poses minimal risk to huma...
Soil: Silver deposited from cloud seeding accumulates over time. While concentrations measured near seeding areas are typicall...
Wildlife: Aquatic organisms are most sensitive to silver. Fish and invertebrates can be affected at very low concentrations. Wildl...
Potassium IodideKI

Dispersed by: N260HS, XCN81, N991GT, ATN3300, 00000000, FFT2016

Human: Potassium iodide is generally safe at cloud seeding concentrations. It is widely used in medicine (thyroid protection). ...
Soil: KI has minimal soil impact. Potassium is a natural soil nutrient, and iodide levels from cloud seeding are typically wel...
Wildlife: KI is one of the safest cloud seeding additives for wildlife and livestock. Iodine is an essential nutrient, and seeding...
Dry IceCO₂ (solid)

Dispersed by: N260HS, FFT2016

Human: Dry ice is one of the safest cloud seeding agents from an environmental toxicity perspective. Primary risks are occupati...
Soil: Dry ice has essentially no negative soil impact. It sublimates to carbon dioxide, which is naturally present in soil and...
Wildlife: Dry ice is the most environmentally benign cloud seeding agent. Risks to animals are negligible outside of extremely unl...
Silver IodateAgIO₃

Dispersed by: XCN81, N991GT, ATN3300, 00000000

Human: Silver iodate is more acutely hazardous than silver iodide due to its oxidizing nature. Workers handling flares face the...
Soil: Shares the soil contamination profile of silver iodide, with additional concerns from the oxidizing iodate component and...
Wildlife: Toxicity profile similar to silver iodide with additional oxidizer concerns. Most relevant for wildlife near active flar...
Bismuth Tri-iodideBiI₃

Dispersed by: N194TR, N407TK, CSB594

Human: Bismuth is considered one of the least toxic heavy metals. BiI₃ was specifically developed as a less toxic alternative t...
Soil: Lower soil toxicity than silver iodide. Bismuth is relatively inert in soil environments and has minimal impact on soil ...
Wildlife: BiI₃ was developed specifically as a less environmentally harmful alternative to AgI. Toxicity data is more limited, but...
Sodium ChlorideNaCl

Dispersed by: RKJ16, N3221M, FLC78

Human: Sodium chloride is one of the most benign seeding agents. Environmental concentrations from seeding are trivial compared...
Soil: Salt from cloud seeding is generally insignificant compared to natural deposition and irrigation-related salinity. Howev...
Wildlife: Minimal animal impact. The quantities dispersed in cloud seeding are tiny relative to natural and agricultural salt sour...
Calcium ChlorideCaCl₂

Dispersed by: RKJ16, N3221M, FLC78

Human: CaCl₂ is more irritating than table salt but environmental concentrations from cloud seeding are extremely low. Primary ...
Soil: Calcium chloride has minimal negative soil impact at cloud seeding concentrations. Calcium can actually be beneficial to...
Wildlife: Very low risk to animals. CaCl₂ from cloud seeding adds negligible amounts to the environment compared to natural minera...
Liquid PropaneC₃H₈

Dispersed by: RKJ16, N3221M, FLC78

Human: Propane is primarily an occupational hazard (fire, explosion, asphyxiation). Once dispersed in the atmosphere, it poses ...
Soil: Propane has no soil impact from cloud seeding operations. It evaporates completely....
Wildlife: Propane is environmentally benign for cloud seeding purposes. All risks are limited to the immediate area around ground-...

Aircraft Fleet

15 tracked aircraft types

Explore

Operators

10 active companies

Explore

Chemicals

10 seeding agents

Explore

Programs

9 active states

Explore

Active State Programs

View All

California

California Cloud Seeding Program

Snowpack enhancementPrecipitation augmentation

Colorado

Colorado Cloud Seeding Program

Snowpack enhancementWater supply augmentation

Idaho

Idaho Cloud Seeding Program

Snowpack enhancementHydroelectric water supply

Nevada

Nevada Cloud Seeding Program

Snowpack enhancementPrecipitation augmentation

New Mexico

New Mexico Cloud Seeding Program

Precipitation enhancement

North Dakota

North Dakota Cloud Modification Project

Rainfall enhancementHail suppression

Effectiveness

5-15%

Estimated seasonal precipitation increase from cloud seeding programs

Colorado River Basin

7 States

Cooperative cloud seeding program serving 40 million people

Regulation

9 States

With active, state-sanctioned cloud seeding programs in the US