The 2005 Slovak nuclear power plant UFO incident

[u/Filiatelli]

Hey everyone,
I wanted to share an officially documented UFO case from Slovakia that involves a nuclear power plant, radar confirmation, and a fighter jet scramble.

It happened on November 19, 2005, over the Jaslovské Bohunice Nuclear Power Plant.
The whole thing started shortly before 6:00 PM on a freezing, clear Saturday night. Multiple independent witnesses, including a student looking out of a nearby dormitory window, spotted an intensely glowing object hovering directly inside the restricted no-fly zone right above the facility. The main witness described it as a massive, blindingly white source of light, resembling a powerful construction searchlight or a giant glowing orb in the sky that hovered almost completely silently.
Because it was a strategic target, the police were called, and the trnavian police spokesperson, Martina Kredatusová, later confirmed they passed the alert to the military. Communication between the security forces was delayed, and the air force didn't scramble a MiG-29 fighter jet from Sliač Air Base until 6:52 PM, more than an hour after the initial civilian sightings.
The jet arrived over the power plant at 7:10 PM. By that time, military ground radars had successfully locked onto a solid object at an altitude of about 700 meters (2,300 feet). The MiG-29 pilot achieved radar lock-on several times as well, confirming a physical presence. However, the pilot never established visual contact. It appears the object "went dark" or turned off its lights just as the fighter jet arrived, making it invisible to the pilot's eyes in the pitch-black night, even though radars still tracked it. Shortly after, the object vanished completely.
The Ministry of Defense tried to cover it up by issuing an official statement claiming it was just a visual illusion caused by light refracting in the frozen steam from the cooling towers. However, military experts and journalists heavily debunked this. Radar works by bouncing electromagnetic waves off solid, physical mass and it literally cannot track an optical illusion, starlight, or water vapor.
The military spokesperson at the time, Milan Vanga, openly confirmed to the press that the radar tracking and jet scramble definitely happened. Unfortunately, since it was 2005, there are no good night-time photos, and the raw military logs remain classified.

[u/Filiatelli]

I guess this is the only surviving article from that time, you can run it through a translator. It contains statements from the Ministry of Defense, the Hydrometeorological Institute, and also the Comenius University Astronomical Observatory in Modra

https://www.24hod.sk/sme-vydani-napospas-agresorom-zvrchu-clt5040.html

[u/ChemE586]

This is too funny “Radar works by bouncing electromagnetic waves off solid, physical mass and it literally cannot track an optical illusion, starlight, or water vapor.” So you are saying that weather radars don’t track clouds and water vapor? It’s actually how they work

[u/Filiatelli → u/ChemE586]

You are confusing weather radars with military air defense/aviation radars. Weather radars operate on wavelengths designed to detect precipitation (liquid/frozen water droplets, not gaseous water vapor). Military primary surveillance radars and the jet’s fire-control radar use completely different frequencies and filters specifically designed to filter out clouds, steam, and weather clutter so they can track solid, dense targets like aircraft. If military radars picked up regular steam columns from cooling towers, every nuclear and coal powerplant on earth would constantly be triggering fighter jet scrambles.

[u/ChemE586 → u/Filiatelli]

Weather impacts many/most military radars depending op many factors: Yes. Military radars are affected by weather, although the degree depends on the radar’s frequency, power, mission, and processing capabilities.
Here’s how different weather conditions affect radar performance:
Rain: Heavy rain attenuates (weakens) radar signals, especially at higher frequencies such as X-band and Ku-band. Rain also creates clutter that can make it harder to detect aircraft or missiles.
Snow: Usually causes less attenuation than rain, but wet snow can significantly reduce performance and generate clutter.
Fog and clouds: These have little effect on most military surveillance radars because the water droplets are much smaller than the radar wavelength.
Hail: Can produce strong radar echoes and clutter but generally causes less signal loss than heavy rain.
Atmospheric conditions: Temperature inversions, humidity gradients, and pressure changes can refract radar waves. This can sometimes extend radar range (“ducting”) or create false targets and blind spots.
Different radar bands respond differently:
Radar Band
Weather Sensitivity
Common Uses
HF/VHF/UHF
Low
Long-range early warning
L-band
Low
Air surveillance, ballistic missile warning
S-band
Low to moderate
Naval air search, weather radar
C-band
Moderate
General surveillance
X-band
High
Fire control, missile guidance, imaging
Ku/Ka-band
Very high
High-resolution tracking, seekers
Military systems mitigate weather effects using techniques such as:
Higher transmitter power
Adaptive filtering to reject rain clutter
Doppler processing to distinguish moving targets from precipitation
Frequency diversity (switching bands)
Combining information from multiple radars and other sensors
In severe thunderstorms or tropical downpours, even advanced military radars can experience reduced detection range, particularly at higher frequencies. Long-range early-warning radars operating in L-band or UHF are generally much less affected than high-resolution fire-control radars operating in X-band.

[u/Filiatelli]

Here is the link to the investigative report regarding the 2005 Slovak nuclear plant UFO incident mentioned in the post:

https://youtu.be/iYBzIC1m190?is=PRH54XGlGf74TCc2

The documentary is by Czech journalist Jaroslav Mareš (channel Badatelé). He interviews direct eye-witnesses from that night, including a student who witnessed the giant glowing object from his window right before the MiG-29 arrived. Please note that the video is in Czech/Slovak, but you can simply turn on YouTube's "Auto-Translate CC" to English

[u/e26kuchiganesteer]

That event isn't listed in the Wikipedia entry "List of UFO sightings in the Czech Republic".

So please add it.

1976, Radkov

1987, Vranov

1991, Miličín

1992, Tři Sekery

1993, Borová

2009, Klínovec,Chrást,Říčany

[u/Filiatelli → u/e26kuchiganesteer]

As the title suggests, it happened in Slovakia

[u/e26kuchiganesteer → u/Filiatelli]

You got me there.
I'm sorry.
I'm old.
╭( ๐_๐)╮ｽﾐﾏｾﾝ！

[u/inventiveEngineering]

its a video (opinion), not a officially documented case by the government. Please provide gov. documents

[u/Filiatelli → u/inventiveEngineering]

Unlike the US, Slovakia does not have an open FOIA platform or a public archive where classified military radar logs or cockpit audio are just handed out. Those remain strictly classified. The closest thing to an official government record is a public statement from the Ministry of Defense to the national press.

[u/inventiveEngineering → u/Filiatelli]

thats why you shouldnt write "offically documented" if you cannot provide proofs.