{
  "type": "article",
  "title": "Low Pressure Area Over Bay of Bengal Triggers Downpours Across South India as Kerala Puts Five Districts on Orange Alert",
  "summary": "Intense showers and gusty winds up to 60 km/h hit southern states, prompting an orange alert across five Kerala districts and heavy rain warnings for Tamil Nadu.",
  "content": "A sudden transition in atmospheric conditions has unleashed intense rain across several southern states, with Tamil Nadu and Kerala experiencing widespread thunderstorms from early morning hours. Weather authorities have projected very heavy downpours for Thursday, October 22, covering Tamil Nadu, Puducherry, Karaikal, Mahe, and parts of Kerala. Heavy rainfall is also anticipated in Andhra Pradesh and Lakshadweep, while widespread lightning strikes and wind speeds ranging from 40 to 50 km/h, gusting up to 60 km/h, are expected across Tamil Nadu, Karnataka, Kerala, Andhra Pradesh, Telangana, and the Andaman and Nicobar Islands.\n\nAtmospheric Driver in the Bay of Bengal\nThe primary trigger behind this prolonged precipitation spell is a well-marked low-pressure area that has developed over the southwest Bay of Bengal, lying close to the Tamil Nadu coastline. This atmospheric system is dragging abundant oceanic moisture directly into the southern peninsula. Consequently, an orange alert has been enforced for Tamil Nadu and Kerala to warn of potential flooding and severe disruptions. Isolated heavy rainfall accompanied by intense lightning strikes is also forecast across South Interior Karnataka, Coastal Andhra Pradesh, Yanam, and Rayalaseema.\n\nDistricts on High Alert Across Kerala\nThe India Meteorological Department has segregated Kerala into high and moderate warning zones based on anticipated rain volumes. An orange alert is currently in effect across five southern and central districts: Thiruvananthapuram, Kollam, Pathanamthitta, Alappuzha, and Kottayam, signifying that very heavy precipitation could cause rapid surface runoff and localized waterlogging. Meanwhile, five other districts including Idukki, Ernakulam, Thrissur, Palakkad, and Malappuram remain under a yellow alert. These regions are projected to receive between 64.5 mm and 115.5 mm of rainfall within a 24-hour window.\n\nForecast for Island Territories and Eastern Coast\nThe influence of this weather mechanism extends far into maritime regions. The Andaman and Nicobar Islands are forecast to receive heavy to very heavy spells of precipitation spanning from October 22 through October 27. Additionally, the coastal state of Odisha is expected to witness rainfall between October 26 and October 27 as the regional wind patterns shift. Residents across the southern peninsula have been cautioned against venturing into open fields during active thunderstorm periods due to the heightened risk of lightning.\n\nStable Conditions in Northern and Central Regions\nIn sharp contrast to the turbulent conditions across the south, vast tracts of the country will experience steady and dry atmospheric conditions. No major meteorological shifts are predicted for Northwest India, Central India, West India, or Northeast India throughout the current week. However, localized heat coupled with high humidity is expected to persist along the Konkan belt in Maharashtra and the coastal state of Goa on October 22.\n\nClear Skies and Seasonal Temperatures in Delhi\nThe national capital is slated to maintain predominantly clear and tranquil weather conditions. Daytime skies across Delhi will remain unclouded, with maximum temperatures settling between 31°C and 33°C. Nighttime conditions will feel moderately cool, as minimum temperatures hover between 17°C and 19°C. Meteorological gauges indicate that both minimum and maximum temperature readings across the majority of Delhi localities will remain closely aligned with seasonal averages.\n\nWhat this means for you\nCommuters, farmers, and daily travelers across peninsular India will experience disruptions due to localized flooding and high winds.\n\n• In Kerala and Tamil Nadu: Intense rain under the orange alert is likely to flood low-lying streets and slow down vehicular movement across key urban pockets. Residents in low-lying zones should avoid non-essential transit and prepare for possible municipal drainage backlogs.\n• In Andhra Pradesh and Karnataka: Wind gusts reaching up to 60 km/h combined with severe lightning present risks of power tripping and falling tree branches. Agricultural workers should secure harvested produce and avoid working out in open pastures during active storm periods.\n• In Island Territories: Persistent rainfall in Andaman and Nicobar through October 27 may lead to ferry delays and restricted sea operations. Coastal communities and local fishing vessels are advised to avoid deep-sea activity while rough surf persists.\n• Across Delhi and Northern Plains: Residents will experience stable weather with daytime highs around 33°C and cool night temperatures near 17°C. No immediate rain disruptions are expected, though early morning hours will carry a noticeable seasonal chill.\n\nWhy this happened\nThe sudden surge in severe weather across South India is driven by an active oceanic system in the Bay of Bengal, which is drawing vast volumes of moisture over land.\n\n• Low-Pressure Development: A low-pressure area formed over the southwest Bay of Bengal near the Tamil Nadu coastline, acting as a regional moisture attractor. This system pulls warm, saturated air directly from the sea across peninsular territories.\n• Wind Shear and Atmospheric Instability: The drop in central pressure has generated gusty surface winds between 40 and 60 km/h, which enhances cloud formation. This sharp convective activity triggers frequent lightning flashes and concentrated cloudbursts.\n• Absence of Northern Systems: Northwest and central regions lack any significant western disturbance or moisture influx right now. Consequently, northern plains including Delhi remain shielded from cloud cover and maintain clear, dry atmospheric conditions.\n\nQuestions & Answers\n\n1. Which districts in Kerala are placed under an orange alert for heavy rain?\nThiruvananthapuram, Kollam, Pathanamthitta, Alappuzha, and Kottayam are under an orange alert due to expected heavy rainfall.\n\n2. What weather system is responsible for the torrential rains in southern India?\nA low-pressure area located over the southwest Bay of Bengal off the Tamil Nadu coast is driving moisture-heavy clouds inland.\n\n3. How long will the rainfall spell continue over the Andaman and Nicobar Islands?\nThe Andaman and Nicobar Islands are expected to experience sustained heavy rainfall from October 22 through October 27.\n\n4. What is the weather and temperature forecast for Delhi?\nDelhi will experience clear skies with maximum temperatures between 31°C and 33°C, and minimum temperatures ranging from 17°C to 19°C.",
  "url": "https://trendkia.com/en/national/bay-of-bengal-men-bane-sistama-se-dakshini-rajyon-men-bhari-barisha-ka-daura-shuru-kerala-ke-pancha-jilon-men-orange-alert-50361",
  "category": "India",
  "publishedAt": "2026-10-22",
  "tags": [
    "IMD Weather Update",
    "Heavy Rain Alert",
    "Kerala Weather",
    "Tamil Nadu Rains",
    "Orange Alert",
    "Delhi Weather"
  ],
  "language": "en",
  "site": "TrendKia"
}