Delhi engulfed in ‘not very common’ dense fog in March; records lowest temperature since February 26| India News
Recent Rains and Still Air Blanket Region in Morning Fog
Early risers across our communities recently experienced dense fog, significantly reducing visibility. Local weather experts for Omni 360 News pinpointed specific atmospheric conditions for this occurrence.
They attribute the widespread fog primarily to three factors: recent rainfall, high moisture levels, and notably calm overnight winds.
Recent Rain: Previous days’ ample rain saturated the ground, boosting atmospheric water vapor.
High Moisture Content: This extra moisture lingered. As temperatures dropped overnight, the air cooled. When moist air cools to its ‘dew point’ – the temperature at which it can no longer hold all its water vapor – that excess vapor condenses into tiny water droplets we see as fog.
Calm Winds Overnight: Crucially, calm breezes prevented these droplets from dispersing, allowing dense accumulation near the ground. Stronger winds would scatter the moisture, preventing such thick fog.
Local advisories urged caution for commuters. This fog typically clears with morning sun or light winds. Similar conditions could recur with sustained wet weather followed by clear, still nights.
Key Takeaways:
- Rain increases atmospheric moisture.
- Cool air causes moisture to condense into fog.
- Calm winds allow fog to settle and thicken.
