At Bahrain International Airport (OBBI), when are Low Visibility Procedures (LVP) typically declared and implemented by Air Traffic Control?

1. Whenever the outside air temperature exceeds 45°C
2. When the Runway Visual Range (RVR) falls below 550 m or the cloud ceiling falls below 200 ft
3. When surface wind speed exceeds 35 knots across the runway
4. During all nighttime operations between sunset and sunrise