June 2, 2018 - China Launches New Meteorological Satellite

On June 2, 2018, China announced the launch of Fengyun-2H, a spin-stabilized meteorological satellite built to extend weather coverage across underserved regions. It lifted off on June 5 aboard a Long March-3A rocket from Xichang Satellite Launch Center. It's the eighth and final satellite in the Fengyun-2 series, settling into orbit at 79° East to serve over 80 countries across South Asia, the Middle East, and Africa. There's much more to uncover about what makes this mission remarkable.

Key Takeaways

• China announced the launch of the Fengyun-2H meteorological satellite on June 2, 2018, with liftoff occurring June 5 from Xichang Satellite Launch Center.
• The satellite was carried by a Long March-3A rocket and weighs approximately 1.4 metric tons.
• Fengyun-2H is the eighth and final satellite in the Fengyun-2 geosynchronous series, continuing over two decades of heritage.
• The satellite was positioned at 79°E, providing meteorological coverage over South Asia, the Middle East, and Central Africa.
• FY-2H entered operational service in January 2019, sharing data freely with over 80 countries to support disaster preparedness.

What Fengyun-2H Is and Why China Built It

China launched its Fengyun-2H (FY-2H) meteorological satellite on June 5, 2018, carrying it aboard a Long March-3A rocket from the Xichang Satellite Launch Center in Sichuan Province at 21:07 p.m. BJT. It's the eighth and final satellite in the FY-2 series, a lineage representing over two decades of satellite heritage dating back to 1997.

Built on the spin-stabilized Dong Fang Hong 2 platform, FY-2H serves a deliberate strategic purpose rooted in regional diplomacy. China repositioned it westward to 79 degrees east longitude at the request of the WMO and APSCO, filling a critical gap in Indian Ocean weather coverage. It delivers custom meteorological services to Belt and Road territories across West Asia, Central Asia, Africa, and Europe. As the westernmost geostationary satellite in China's national layout, it extends continuous observational coverage over regions that previously lacked reliable meteorological data support.

The satellite is equipped with a scanning radiometer capable of capturing full-hemisphere images every 30 minutes, with regional scans possible as frequently as every six minutes. Emergency authorities across Africa, the Middle East, and Central and South Asia can request dedicated observations to support disaster prevention and mitigation efforts.

What the Fengyun-2H Scanning Radiometer Actually Does

At the heart of Fengyun-2H sits the S-VISSR, or Stretched Visible and Infrared Spin-Scan Radiometer, the satellite's primary instrument for gathering weather data.

It spins at roughly 100 rpm, scanning Earth's full disk every 30 minutes, dramatically cutting data latency for forecasters tracking fast-moving storms.

With five spectral bands and rigorous sensor calibration, it delivers sharp, reliable imagery you can trust during critical weather events.

Here's what it actively monitors for you:

• Typhoons and floods threatening coastal and inland communities
• Water vapor patterns revealing developing storm systems before they intensify
• Sea surface temperatures supporting accurate marine and atmospheric forecasting

The S-VISSR transmits data at 14 Mbit/s in HRIT format, putting critical weather intelligence into forecasters' hands fast.

The satellite was launched June 5, 2018 from Xichang, joining a constellation designed to bridge the transition to China's next-generation geostationary meteorological satellite fleet. It is the eighth and last satellite of the Fengyun-2 geosynchronous series, with the more advanced Fengyun-4 series already underway to take its place. This kind of rapid, reliable data delivery mirrors the goals of connectivity projects like Project Loon, which achieved 18.9 Mbps downlink speeds while serving remote regions with near-real-time information access.

How the Long March 3A Rocket Launched Fengyun-2H Into Orbit

Carrying Fengyun-2H skyward, the Long March 3A rocket lifted off from Launch Complex 3 at Xichang Satellite Launch Center in Sichuan Province at 9:07 a.m. Eastern time. The 52.52-meter rocket's three-stage design handled payload integration and rocket staging seamlessly, propelling the 1.4-metric-ton spacecraft toward orbit.

The first two stages burned hypergolic propellants, while the third stage's dual YF-75 engines ignited on cryogenic liquid hydrogen and liquid oxygen. About one hour after liftoff, China Aerospace Science and Technology Corporation confirmed the vehicle had successfully inserted Fengyun-2H into geosynchronous transfer orbit. The Long March 3A's 100% success rate since its 1994 maiden flight held firm, earning its reputation as CASC's "Golden Brand Launch Vehicle." Prior to launch, airspace closure notices had been published days in advance to coordinate the mission's safe execution.

The Long March 3A was developed as a direct successor to the Long March 3, which had experienced several third-stage failures related to its gas generator and turbine systems. The Long March 3A featured an improved third stage, addressing the recurring propulsion issues that had plagued its predecessor across multiple missions throughout the 1980s and 1990s.

How Fengyun-2H Moved From Transfer Orbit to Its Final Position at 79° East

With Fengyun-2H safely in its elliptical transfer orbit, the satellite's onboard engine took over the work of reaching geostationary altitude. Through carefully timed burns, it raised its apogee, corrected its 24.6-degree inclination, and began orbital phasing toward its test slot at 86.5° East.

What that engine accomplished in just weeks is remarkable:

• It circularized a wildly elongated orbit into a perfect 35,786 km circle
• It shifted the satellite's longitude westward to 79° East
• It established precise station keeping for decades of weather monitoring

After a four-month checkout period, NSMC confirmed operational service on January 11, 2019, positioning Fengyun-2H to deliver full-disk imagery every 30 minutes for millions depending on accurate forecasts. The orbital adjustment to 79° East was made in direct response to requests from WMO and APSCO to strengthen observation coverage over the Indian Ocean and fill a critical regional gap. As the eighth and final satellite in the Fengyun-2 series, it carries the S-VISSR instrument for multi-purpose weather imagery and environmental monitoring. Much like the demand regulator developed for the Aqua-Lung enabled humans to access previously unreachable depths by automatically matching ambient pressure, Fengyun-2H's pressure-regulated propulsion systems ensured precise engine performance across the extreme pressure differentials of orbital transition.

Why Fengyun-2H's Position at 79° East Fills a Critical Coverage Gap

Reaching 79° East wasn't just a technical milestone—it was a deliberate answer to a recognized gap in global weather monitoring.

Before Fengyun-2H's placement, geostationary satellites left the Indian Ocean significantly underserved. You can see why that mattered—oceanic data sharing across Africa, the Middle East, and South Asia depended on filling that void. The WMO and APSCO both requested China shift the satellite westward from its originally planned 86.5°E, recognizing how much broader coverage would benefit regional forecasting.

From 79° East, Fengyun-2H captures cloud imagery every six minutes, supports regional sensor calibration across Asia-Pacific networks, and feeds data into global exchanges with NOAA and Eumetsat.

For cyclone tracking, early disaster warnings, and climate monitoring, this position transforms what neighboring regions can actually observe and act on. The Fengyun series has monitored over 470 typhoons in the western Pacific Ocean and South China Sea since June 10, 1997, demonstrating the real-world impact these satellites have had on disaster preparedness across the region. Much like how the Hubble Space Telescope demonstrated that in-orbit maintenance could extend the operational life of major scientific instruments, Fengyun-2H's strategic repositioning reflects how deliberate planning decisions can dramatically expand a mission's long-term value.

Which Countries Benefit Most From Fengyun-2H Weather Coverage?

From 79° East, Fengyun-2H stretches its coverage across an enormous arc—from Oceania through South Asia, the Middle East, and into Central Africa.

Through satellite diplomacy, China's extending critical meteorological infrastructure to nations that previously had none. For regional agriculture and disaster preparedness, this changes everything. Launched aboard a Long March-3A rocket, Fengyun-2H lifted off from Xichang Satellite Launch Center in Sichuan Province on June 5, 2018.

Countries benefiting most include:

• Pakistan, Indonesia, Thailand, Myanmar, and Laos — nations already receiving life-saving severe weather alerts through established CMACast stations
• African nations — receiving real-time cloud and water vapor imagery for the very first time
• Western and Central Asian countries — now accessing tailor-made high-frequency sub-regional observation services built around their specific needs

You're watching 25 countries gain tools that protect lives, safeguard harvests, and build resilience against climate-driven disasters they couldn't previously anticipate. Canada's Anik A1, launched in 1972 as the world's first commercial geostationary communications satellite, demonstrated decades earlier how a single orbital platform could deliver continent-wide coverage to remote and underserved communities. Since entering operation in January 2019, Fengyun-2H has delivered approximately 55,000 cloud images to meteorological agencies and research institutions around the world.

How Fengyun-2H Supports Weather Forecasting Across Belt and Road Countries

Fengyun-2H's westward shift to 79° East unlocks weather forecasting capabilities for Belt and Road countries that previously had little to no satellite coverage. This repositioning exemplifies satellite diplomacy in action — China's sharing of real-time meteorological data freely with over 80 countries strengthens international cooperation while filling critical observation gaps across Central and West Asia, the Indian Ocean, and Africa.

You'll find Fengyun-2H delivering daily cloud images, atmospheric temperature readings, precipitation rates, and sea surface temperatures that directly support disaster prevention and weather prediction across BRI regions. Data training programs help local meteorologists, like those in Namibia, interpret cloud top temperatures and classifications for daily forecasting. Since January 2019, the satellite has supplied over 55,000 cloud images, giving partner nations reliable tools to combat weather-related risks. The Emergency Support Mechanism for international users has been activated more than 20 times in a single year, providing critical disaster monitoring and analysis reports to countries such as Sri Lanka, Bangladesh, Myanmar, and Nepal.

Fengyun-2H was launched aboard a Long March-3A rocket from the Xichang Satellite Launch Center in southwest China's Sichuan Province, marking the final addition to the Fengyun-II series of spin-stabilized weather satellites. Just as Canada's Investment Canada Act was amended to strengthen oversight of foreign investment and international cooperation frameworks, international satellite data-sharing programs like Fengyun-2H reflect how cross-border collaboration increasingly depends on transparent governance and coordinated information exchange between nations.

Why Fengyun-2H Was China's Most Strategically Timed Meteorological Launch

When China launched Fengyun-2H in June 2018, every element of its timing was deliberate. The launch timing preceded President Xi Jinping's SCO summit commitments by just five days, making diplomatic signaling unmistakable — capability first, pledges second.

You can see the strategy clearly through three calculated moves:

• Regional partnerships solidified before promises were made, proving technological readiness
• Data sovereignty extended to underserved Belt and Road nations lacking real-time meteorological infrastructure
• Operational status achieved by September 2018, enabling immediate service deployment

Fengyun-2H didn't arrive accidentally. It arrived exactly when partner nations needed proof, not just promises.

China demonstrated it could protect lives across Central Asia and Africa before asking anything in return. This capability traces a lineage back to the early space race era, when Cold War military investment first drove the miniaturized satellite components and standardized data transmission protocols that made global meteorological monitoring from orbit possible.

How Does Fengyun-2H Compare to Fengyun-4?

The gap between Fengyun-2H and Fengyun-4 isn't subtle — it's generational. You're looking at two completely different classes of satellites. Fengyun-2H is spin-stabilized, older-generation hardware delivering full disk images every 30 minutes. Fengyun-4A and 4B are three-axis stabilized, second-generation platforms refreshing every 15 minutes — cutting data latency in half. That difference matters when you're tracking fast-moving typhoons or sudden storm development.

On satellite longevity, FY-4's design life exceeds seven years, while FY-2H carries a four-year operational expectation. FY-4 also packs far more capability — lightning detectors, infrared sounders, and an observation efficiency 20 times higher than FY-2 series. Fengyun-2H wasn't launched to compete with FY-4; it was launched to extend coverage where FY-4 couldn't yet reach. Both FY-2H and FY-4A have since been recognized as on-duty CHARTER satellites, enabling them to provide critical data services for international disaster monitoring and response.

How Fengyun-4 Takes Over Where Fengyun-2H Leaves Off

Stepping in where Fengyun-2H leaves off, FY-4 doesn't just improve on its predecessor — it redefines what geostationary meteorological satellites can do. This satellite handover ensures coverage continuity across China, the Indian Ocean, and Belt and Road regions without missing a beat.

Here's what FY-4 delivers that FY-2H never could:

• Faster imaging — full disk every 15 minutes, typhoon scans every 6 minutes
• Sharper data — 500m visible resolution and 52 advanced L2 processing products
• Longer reach — FY-4B at 133°E extends coverage far beyond FY-2H's 79°E position

You're no longer waiting on outdated data. FY-4's 20x efficiency improvement means forecasters act faster, saving lives when it matters most.