Severe Cold Wave Grips North India as Dense Fog Paralyzes Transport; IMD Issues Red Alert for Multiple States

Flights delayed, highways slow to a crawl, and schools adjust schedules as temperatures plunge and visibility collapses across northern plains

Dateline: Lucknow | 11 December 2025

Summary: North India has entered one of its harshest early-winter phases in recent years, with temperatures dropping sharply and dense fog disrupting flight operations, rail movement, and roadway traffic. The India Meteorological Department (IMD) issued a red alert for severe cold wave conditions across Uttar Pradesh, Punjab, Haryana, Delhi, and Rajasthan.


North India Wakes Up to One of the Coldest Mornings of the Season

Millions across North India woke up today to bone-chilling temperatures and blinding fog, marking the beginning of a severe cold wave sweeping across the region. According to IMD data compiled over the past 72 hours, minimum temperatures have plunged 4–6°C below normal in several districts of Uttar Pradesh, Punjab, Haryana, and Rajasthan.

In Lucknow, the mercury dipped to 4.7°C, making it the coldest morning of the season so far. Similar conditions were reported in Bareilly, Kanpur, Chandigarh, Hisar, Sri Ganganagar, and parts of the Delhi-NCR region. The sudden temperature drop, accompanied by near-zero visibility across the Gangetic plains, has prompted urgent advisories from weather and disaster management authorities.

Dense Fog Disrupts Flights and Rail Services

Transport networks across northern India were thrown into turmoil as dense fog blanketed airports and rail corridors. In Lucknow, over 34 flights were delayed and six were diverted due to inability to land in low visibility. Delhi’s Indira Gandhi International Airport, one of the busiest in the country, also reported widespread delays as runway visibility dropped to 50 meters at dawn.

Indian Railways announced delays affecting more than 120 trains across the northern zone. Several long-distance express trains ran behind schedule by two to seven hours. Railway authorities deployed additional patrols along tracks to prevent accidents in low visibility and advised passengers to check real-time status before traveling.

Highways Slow Down as Visibility Plummets

Highways in Uttar Pradesh, Haryana, and Punjab witnessed heavy congestion as vehicles moved slowly with hazard lights on. Multiple minor collisions were reported on the Lucknow–Agra Expressway and Yamuna Expressway due to sudden patches of thick fog.

Police issued public notices urging commuters to avoid early morning travel unless essential. Traffic authorities have deployed additional highway patrols and installed temporary reflective markers in fog-prone zones.

IMD Issues Red Alert for Emerging Cold Wave Zone

The India Meteorological Department has issued a red alert for severe cold wave conditions across several districts. The advisory warns that minimum temperatures are expected to drop further over the next 48 hours.

According to IMD:

• Severe cold wave: Uttar Pradesh, Punjab, Haryana, Rajasthan

• Cold day to severe cold day: Delhi NCR, Uttarakhand plains

• Very dense fog: Bihar, eastern UP, parts of Madhya Pradesh

Meteorologists attribute the sudden change to a combination of northwesterly winds, clear night skies, and low moisture dispersion, which collectively accelerate cooling in the region.

Schools Adjust Schedules; Outdoor Activities Curtailed

Education departments across multiple states have announced changes in school timings to protect students from extreme weather. In Lucknow, Noida, Jaipur, and Amritsar, morning shifts have been delayed by one hour, and outdoor sports activities have been temporarily suspended.

Some districts in Uttar Pradesh have already issued advisories allowing students to attend school in regular sweaters and jackets instead of uniforms to stay warm. Parent associations welcomed the move, citing health concerns amid the biting cold.

Health Impact: Hospitals Report Rise in Seasonal Illnesses

Hospitals across the northern belt have reported an uptick in cases of upper respiratory infections, aggravated asthma, viral fevers, and hypothermia among vulnerable populations. Elderly citizens, infants, and daily-wage workers are particularly at risk, according to doctors.

Health officials advised residents to stay indoors during early mornings and late evenings, use room heaters safely, and maintain hydration. They reminded communities that prolonged exposure to cold can reduce immunity, making individuals susceptible to infections.

Homeless Shelters Overflow as Night Temperatures Drop

State governments have activated emergency warming centers and night shelters to accommodate the rising number of homeless individuals seeking protection from the cold. In Lucknow, shelters reported full occupancy by 7 p.m., prompting authorities to open temporary heated tents in public parks.

Volunteers and NGOs have intensified blanket distribution drives in densely populated and low-income neighborhoods. Local disaster management teams are conducting night-time patrols to identify individuals sleeping outdoors.

Rural Hardships Intensify Amid Cold Wave

The drop in temperature has severely affected rural communities across Uttar Pradesh and Rajasthan. Farmers working in early morning fields face health risks, while livestock mortality has increased in some districts.

Experts warn that prolonged cold spells can impact wheat germination, horticulture plantations, and vegetable yields — potentially influencing market prices in the coming weeks.

Air Quality Worsens as Fog Mixes With Pollution

Many cities reported a sharp deterioration in air quality as fog trapped pollutants closer to the ground. Delhi, Ghaziabad, Hisar, and Lucknow recorded AQI levels in the “very poor” or “severe” category.

Environmental scientists explained that cold, stagnant air prevents dispersion of particulate matter, creating a toxic blanket that enhances respiratory risks.

Climate Experts Link Extreme Cold to Broader Weather Shifts

While cold waves are common in northern India, experts note that the severity of this early-season event highlights broader climatic shifts. Rapid temperature variations, unpredictable fog cycles, and intense dry spells are increasingly becoming part of India’s winter pattern.

Scientists emphasize the need for enhanced forecasting models that combine local data with long-term climate projections.

Power Demand Surges Across Northern Grid

Electricity consumption surged as households and businesses increased use of heating devices. State power corporations in Uttar Pradesh, Delhi, and Haryana reported a 12–18% jump in demand during morning and evening hours.

Operational teams have been put on alert to prevent overloads and voltage fluctuations.

Transport Departments Issue Prolonged Advisory

Transport authorities have issued a set of public guidelines for the next week:

• Drive slowly and avoid overtaking in fog

• Use fog lamps or low-beam headlights

• Avoid unnecessary early-morning travel

• Maintain extra distance between vehicles

State police departments have deployed additional personnel at major intersections and highways to prevent traffic build-up.

Farmers Seek Government Support as Crops Face Stress

Wheat farmers, especially in western UP and Haryana, expressed concern over crop damage due to frost formation in the early morning hours. Agricultural extension officers are advising farmers to irrigate fields lightly to reduce frost intensity and cover nursery beds as preventive measures.

Dairy farmers also reported a decline in milk output due to cold stress on cattle, prompting calls for veterinary support and fodder subsidies.

Weather Outlook: Cold Wave to Continue for 3–4 More Days

According to IMD forecasts, the cold wave is expected to persist for at least the next three to four days before temperatures begin to stabilize. Nighttime temperatures may drop even further in certain parts of Rajasthan and western Uttar Pradesh.

Fog intensity may decrease slightly in some regions but will continue to disrupt morning visibility across much of the northern plains.

Preparing for a Harsh Winter

Local governments are preparing for the possibility of a prolonged winter phase. Forecasting teams will monitor Western Disturbances that could either intensify or ease the conditions. Public health departments, disaster teams, municipal corporations, and transportation networks are coordinating to minimize disruptions.

The next few days will be crucial for both urban and rural populations as temperatures remain severe and fog conditions fluctuate unpredictably.

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