Siren test in Prague. Zkouška sirén

The siren test 🚨 is a regular verification of the operability of the alert system in Prague🔔🔉Sirens are used to alert you in the case of fire, natural or industrial disasters, aviation or chemical attacks. 📢 You may hear the siren test every first Wednesday in the month at 12 o'clock. It’s a 140 second long test tone (real warnings are proclaimed by a fluctuating tone).
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