{
  "type": "article",
  "title": "Monsoon Mounts Late Surge as Deepening Depression Over Bay of Bengal Triggers Storm Alerts Across Multiple States",
  "summary": "Even as withdrawal begins across northwest India, a low-pressure area over the Bay of Bengal is set to intensify into a deep depression, prompting severe rain, lightning, and wind warnings across several regions.",
  "content": "Even as the south-west monsoon embarks on its seasonal retreat from parts of the country, late-stage atmospheric disruptions are sparking a fresh spell of turbulent weather across multiple regions. The weather department has sounded comprehensive alerts for Tuesday, September 22, warning of widespread rainfall, thunderstorms, and lightning strikes across various states. Atmospheric instability is expected to generate squally winds gusting between 60 and 80 kilometres per hour in vulnerable pockets, threatening localized disruption to surface transport and power infrastructure.\n\nBay of Bengal System Set to Deepen Into Deep Depression\nA primary driver of this renewed surge is an active low-pressure area situated over the Bay of Bengal. Meteorological evaluations indicate that this system will steadily strengthen over the next 48 hours, progressing into a depression before intensifying into a deep depression. Forecasters project that the intensifying weather system will approach the coastline between northern Andhra Pradesh and southern Odisha by the morning of September 23. Its most powerful punch is anticipated on September 24, with Odisha and Chhattisgarh facing the brunt of very heavy to extremely heavy rainfall spells.\n\nEastern Uttar Pradesh Braced for Showers Before Broader Spread\nIn Uttar Pradesh, the immediate weather activity remains concentrated over the eastern districts. Light showers are expected across Gorakhpur, Deoria, Kushinagar, Varanasi, Prayagraj, Mirzapur, and Sonbhadra, providing periodic cloud cover. Conversely, the state capital Lucknow is likely to witness warm, muggy conditions, with afternoon mercury readings expected to hover around 35 degrees Celsius. However, moisture inflow is slated to expand the precipitation envelope significantly across the state starting September 24.\n\nJharkhand Under Prolonged Rain Warning Through September 26\nSevere weather conditions have been flagged for Jharkhand, where several districts are on alert for heavy showers accompanied by frequent cloud bursts and intense lightning strikes. Critical industrial and residential corridors including Ranchi, Bokaro, Dhanbad, Deoghar, Giridih, and Hazaribagh remain under caution. Given the strength of the incoming low-pressure system and surrounding moisture channels, this spell of wet weather across the state is projected to persist until September 26.\n\nSunny Skies for Delhi as Withdrawal Commences in Northwest Plains\nIn contrast to the rain-hit eastern states, the national capital Delhi is projected to enjoy a dry and clear interlude. Forecasters anticipate largely open skies over Delhi between September 22 and 24, with maximum daytime temperatures ranging between 34 and 36 degrees Celsius. Simultaneously, the formal withdrawal of the monsoon has initiated across sectors of Rajasthan, Haryana, and Punjab. Over the coming days, this retreat line is expected to engulf Delhi, Jammu and Kashmir, Himachal Pradesh, Uttarakhand, and peripheral sectors of Uttar Pradesh.\n\nUttarakhand Hills on Alert for Landslides and Highway Blockages\nTravellers and residents venturing into the mountainous terrain of Uttarakhand have been urged to exercise utmost vigilance. The state is forecast to experience intermittent showers between September 22 and 25, followed by a noticeable intensification on September 26. In the upper reaches and along fragile slopes, heavy precipitation brings a severe threat of landslides, mudslides, and falling boulders, presenting significant hazards on key arterial highways.\n\nWhat this means for you\nThe interaction between the retreating monsoon and the intensifying Bay of Bengal system brings localized travel disruption and physical hazards across eastern and northern India.\n\n• Daily Commute: Heavy downpours across Odisha, Chhattisgarh, and Jharkhand between September 22 and 26 pose severe risks of waterlogging and road congestion. Commuters should factor in significant transit delays and avoid low-lying underpasses during peak thunderstorm activity.\n• Transport Disruptions: Coastal and eastern sectors facing wind gusts up to 80 km/h and lightning may experience rail and flight delays. Passengers traveling through Odisha or northern Andhra Pradesh on September 23 and 24 should verify carrier schedules before departure.\n• Hill Travel Warnings: Mountain corridors across Uttarakhand face heightened risks of mudslides and road blockages between September 22 and 26. Tourists and pilgrims are advised to avoid unnecessary travel on vulnerable hill routes until weather conditions stabilize.\n• Agricultural Precautions: Farmers in eastern Uttar Pradesh and Jharkhand face lodging risks for standing crops due to gusty winds and sudden moisture. Field drainage channels should be cleared immediately and harvested grains moved to dry, elevated storage shelters.\n\nWhy this happened\nThis bout of severe weather stems from the sudden formation of a low-pressure system in the Bay of Bengal colliding with retreating atmospheric wind patterns.\n\n• Intensifying Bay Depression: The low-pressure area over the Bay of Bengal is drawing substantial marine moisture as it deepens into a depression and subsequently a deep depression over 48 hours. Its projected landfall path toward Andhra Pradesh and Odisha generates rapid cloud buildup and high-velocity gales.\n• Boundary Clashes: Dry northwesterly winds initiating monsoon withdrawal from Rajasthan, Punjab, and Haryana are colliding with humid tropical air flowing inland from the Bay. This atmospheric gradient triggers convective instability, generating sudden thunderstorms and lightning across central and eastern belts.\n• Terrain Vulnerability: Mountainous regions experience delayed hazards because saturated ground from the seasonal monsoon loses shear strength under fresh rain bursts. Consequently, prolonged showers in Uttarakhand from September 22 to 26 trigger heightened slope instability and rockfalls.\n\nQuestions & Answers\n\n1. When is the Bay of Bengal system expected to reach the coastline?\nThe system is projected to approach the coast near northern Andhra Pradesh and southern Odisha by the morning of September 23.\n\n2. Which date is expected to see the peak impact of this weather system?\nThe maximum impact is anticipated on September 24, bringing very heavy downpours to Odisha and Chhattisgarh.\n\n3. What wind speeds have been forecast during these storm alerts?\nSqually winds reaching speeds between 60 and 80 kilometres per hour are predicted in affected areas.\n\n4. Which districts in Uttar Pradesh are expected to receive rainfall on September 22?\nLight showers are forecast in eastern districts including Gorakhpur, Deoria, Kushinagar, Varanasi, Prayagraj, Mirzapur, and Sonbhadra.\n\n5. What is the weather outlook for Delhi between September 22 and 24?\nDelhi will experience largely clear skies without rainfall, with daytime temperatures hovering between 34 and 36 degrees Celsius.\n\n6. When is rainfall expected to intensify over Uttarakhand?\nWhile rain will occur between September 22 and 25, precipitation is forecast to intensify significantly on September 25 and 26.\n\n7. From which states has the monsoon retreat already begun?\nMonsoon withdrawal has commenced from sections of Rajasthan, Haryana, and Punjab.\n\n8. How long will the wet spell persist in Jharkhand?\nRainfall accompanied by thunderstorms is expected to continue across Jharkhand districts until September 26.",
  "url": "https://trendkia.com/en/west-bengal/vidai-ki-dahalija-para-monsoon-ka-palatavara-bay-of-bengal-men-bane-dabava-se-kai-rajyon-men-andhi-aura-bhari-barisha-ka-snkata-36194",
  "category": "West Bengal",
  "publishedAt": "2026-09-22",
  "tags": [
    "weather update",
    "monsoon withdrawal",
    "bay of bengal",
    "heavy rainfall",
    "weather department",
    "imd alert"
  ],
  "language": "en",
  "site": "TrendKia"
}