# Monsoon Withdrawal Begins as Heavy Rain and Storm Warnings Loom Over Uttar Pradesh, Bihar, and West Bengal

> As the South-West monsoon initiates its retreat from northwest India, IMD issues alerts for intense downpours, lightning, and strong winds across central and eastern states.

**Type:** article · **Category:** India · **Published:** 2026-09-18 · **Source:** TrendKia
**Canonical:** https://trendkia.com/en/national/manasuna-ki-vidai-ke-satha-barhegi-aphata-up-bihar-aura-bengal-men-bhari-barisha-aura-tuphana-ki-chetavani-33238 · **Language:** English
**Tags:** Weather Forecast, Heavy Rain, IMD Alert, Monsoon Withdrawal, Lightning Warning, Uttar Pradesh Weather, Bihar Rain

The South-West monsoon is preparing for its seasonal exit from the Indian subcontinent, yet its final phase is bringing a fresh wave of turbulent weather. Meteorological conditions are turning highly favorable for the retreat of the South-West monsoon from parts of Western Rajasthan starting September 19. While one side of the country witnesses the beginning of the withdrawal process, several other regions are bracing for active weather conditions marked by heavy downpours and lightning. A new atmospheric development is taking place as a low-pressure area is highly likely to form over the Andaman Sea and its adjoining regions by the evening of September 19. Under the influence of this upcoming weather system, atmospheric instability will persist across the eastern coast and central parts of India. States like Madhya Pradesh, Bihar, Jharkhand, West Bengal, Odisha, and multiple regions of Northeast India are expected to receive significant rainfall, with isolated pockets facing risks of extremely heavy showers, lightning strikes, and gusty winds.

 

## Recent Rainfall Activities and Impact of Emerging Weather Systems

According to data released by the India Meteorological Department (IMD), monsoon activity remained highly intense during the 24 hours leading up to the morning of September 18. During this period, extremely heavy rainfall was recorded across East Rajasthan, Saurashtra, the Gujarat region, Bihar, and Sikkim. Additionally, heavy rain battered parts of Assam, Gangetic West Bengal, Odisha, Jharkhand, Madhya Pradesh, Marathwada, Telangana, South Interior Karnataka, and Tamil Nadu. On September 19, weather conditions will exhibit diverse patterns across the nation. While Delhi and the National Capital Region (NCR) are expected to remain relatively dry, Western Rajasthan will witness the official initiation of the monsoon retreat. Meanwhile, Madhya Pradesh is likely to experience persistent rain and thunder. Fresh cloud patches will bring another spell of rain over West Bengal and Bihar. In Maharashtra and parts of South India, winds are expected to blow at sustained speeds of 40 to 50 km/h, with occasional gusts reaching up to 60 km/h, indicating that the retreating monsoon is leaving behind substantial wet spells.

 

## Delhi NCR and Haryana: Dry Conditions with Minor Rain Chances

In contrast to the highly active weather in the eastern and central states, Delhi and its neighboring NCR towns are expected to experience relatively stable conditions on September 19. The skies over the national capital and surrounding areas are projected to remain clear to partly cloudy. However, the IMD has stated that isolated parts of Haryana, Chandigarh, and Delhi might experience brief spells of rain accompanied by thunderstorms and lightning between September 19 and 20. Cities such as Delhi, Noida, Ghaziabad, Gurugram, and Faridabad are likely to record maximum daytime temperatures ranging between 33 and 35 degrees Celsius, while nighttime temperatures will hover around 24 to 26 degrees Celsius. As the monsoon withdrawal gains momentum in Northwest India, rain frequency in the capital region will decrease significantly over the coming days.

 

## Uttar Pradesh: Thunderstorms Forecast in Eastern Districts and Agricultural Guidance

The state of Uttar Pradesh will not see completely dry weather on September 19. The IMD has forecast isolated rainfall, thunderstorms, and lightning in Eastern Uttar Pradesh on September 19 and 20. Cloud covers and sudden showers are highly likely to impact major urban centers and surrounding areas, including Lucknow, Varanasi, Gorakhpur, Prayagraj, Kanpur, and Azamgarh. Western Uttar Pradesh is also expected to experience localized showers and thunder in a few pockets. Maximum temperatures in most of these cities will range between 32 and 34 degrees Celsius. In light of the unexpected rain, farmers with standing crops ready in their fields have been advised to pay special attention to water drainage management to avoid crop damage. General safety guidelines also urge the public to avoid open spaces and seek shelter in sturdy buildings during high winds.

 

## Bihar: Continued Rain Alert and Risk of Waterlogging in Low-Lying Areas

Rainfall is set to remain highly active in Bihar on September 19, with the IMD predicting persistent wet spells across the state from September 19 to 24. This follows a period of heavy to very heavy rainfall recorded in several parts of Bihar on September 18. Severe cloud cover and heavy downpours are expected to affect Patna, Gaya, Muzaffarpur, Bhagalpur, Purnia, Darbhanga, and Katihar. Thunderstorms accompanied by frequent lightning strikes pose a continuous threat to these regions. The heavy volume of water raises concerns about severe waterlogging in low-lying urban areas, which could lead to significant traffic disruptions and daily commute issues. In rural zones, inundated fields might negatively impact standing agricultural crops. Citizens are strongly advised to avoid standing in open spaces or under tall trees during lightning events.

 

## Jharkhand: Lightning Hazards and Rising Water Levels in Rivers

Monsoon activities will remain highly pronounced in Jharkhand on September 19. The IMD has issued a warning for scattered rain, thunderstorms, and lightning across the state from September 19 to 23. Key urban and industrial centers, including Ranchi, Jamshedpur, Dhanbad, Bokaro, Giridih, Hazaribagh, and Deoghar, are expected to experience a shift in weather patterns. All 24 districts of the state are on alert for rainfall, with wind speeds likely to touch 30 to 40 km/h in regions like Ranchi and Khunti. Following heavy rains on September 18, intermittent showers over the next few days could result in water accumulation in low-lying areas. In rural areas, the water levels of local streams and rivers are expected to rise, requiring caution from residents living nearby. People, especially agricultural workers, are warned against working in open fields or visiting water bodies when lightning activity is high.

 

## West Bengal and Sikkim: Revival of Active Monsoon Phase

West Bengal is set for another active weather spell beginning September 19. Gangetic West Bengal is projected to experience widespread rain from September 19 to 20, with another wet spell scheduled for September 23 to 24. Heavy clouds and showers are expected to impact major districts, including Kolkata, Howrah, Hooghly, Malda, Murshidabad, and North 24 Parganas. Sub-Himalayan West Bengal is also highly likely to receive rain on September 19, affecting the hilly tracts of Darjeeling, Jalpaiguri, and neighboring areas. In addition, Sikkim is under a heavy rain alert, where intense downpours could potentially trigger localized landslides in vulnerable mountain terrains, prompting travel advisories for commuters.

## What this means for you
This significant weather transition will have a direct impact on daily commuting, agricultural sectors, and public safety across multiple states.

- **Agricultural Impact:** Farmers in Uttar Pradesh and Bihar must immediately implement effective water drainage systems in their fields. Failing to manage waterlogging could result in extensive damage to standing crops nearing harvest.
- **Commuter Delays:** Urban areas in Patna, Ranchi, and Kolkata are highly likely to face severe waterlogging on major roads. Commuters should expect travel delays and plan alternative routes to avoid flooded underpasses.
- **Safety Hazards:** High-risk lightning activities necessitate that outdoor workers and rural residents avoid open fields. Taking shelter under trees during storms is highly dangerous and must be strictly avoided.
- **Temperature Drop:** The persistent rain spells will bring a welcome drop in day temperatures across central and northern India. This will provide residents with relief from late-summer humidity.

## Why this happened
The sudden shift in weather patterns is driven by the dual phenomenon of the monsoon's exit from northwest India and a new low-pressure formation in the southeast.

- **Monsoon Retreat Phase:** Dry continental winds establishing over Western Rajasthan are triggering the retreat of the South-West monsoon from September 19. This is a standard climatological transition for mid-September.
- **Andaman Low-Pressure System:** An atmospheric low-pressure area is consolidating over the Andaman Sea by September 19 evening. This system is funneling heavy moisture towards the eastern coast and central plains, resulting in fresh storm cycles.
- **Strong Wind Currents:** The interaction between the retreating monsoon boundary and active oceanic currents is generating high-velocity winds up to 60 km/h over Maharashtra and South India.

## Questions & Answers

### 1. When is the monsoon withdrawal scheduled to begin from Rajasthan?
According to the IMD, meteorological conditions are favorable for the retreat of the South-West monsoon from Western Rajasthan starting September 19.

### 2. What is the expected impact of the new low-pressure area over the Andaman Sea?
A low-pressure area forming by September 19 evening will drive heavy rain, lightning, and strong winds across Central India and the Eastern Coast.

### 3. What is the weather forecast for Delhi NCR on September 19?
Delhi NCR will experience dry and calm weather with clear to partly cloudy skies, and temperatures will remain between 33 and 35 degrees Celsius.

### 4. What agricultural advisory has been issued for farmers in Uttar Pradesh?
Farmers with standing crops have been advised to arrange proper water drainage in their fields to protect crops from damage caused by sudden showers.

### 5. How long will the active rain spell continue in Bihar and Jharkhand?
Rainfall and thunderstorms are expected to persist in Bihar from September 19 to 24, and across Jharkhand from September 19 to 23.

---
_TrendKia — Har trend, sabse pehle.. Machine-readable view; canonical HTML at the URL above._