Full Breakdown
Heavy Rain and Thunderstorms Sweep Delhi-National Capital Region (NCR) on October 12, 2026
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Core Event
On October 12, 2026 the India Meteorological Department (IMD) issued a red alert for all 11 districts of Delhi, warning of moderate to heavy rainfall exceeding 15 mm per hour, thunderstorms, lightning and gusty winds. The alert was to remain in force until 9 a.m. local time.
Observations from the IMD-run Safdarjung observatory recorded 40 mm of rain by 5:30 a.m., while the Delhi airport logged 30 mm. Temperatures fell 1–2 °C, with daytime highs dropping to 30-32 °C.
Background & Context
The system was identified as a Western Disturbance—a cyclonic circulation moving eastward. An IMD bulletin on October 11 noted the disturbance over Himachal Pradesh, with troughs extending from northwest Rajasthan to northeast Madhya Pradesh and a linked circulation over central Pakistan. Such features lift moist air, fostering deep cloud development and thunderstorms. The event followed the withdrawal of the southwest monsoon, showing that monsoon retreat does not preclude heavy rain.
Data & Statistics
- Rainfall: 40 mm at Safdarjung; 30 mm at Delhi airport (to 5:30 a.m.).
- Wind: gusts up to 60 kmph (Hindustantimes cited 62-87 kmph).
- Temperature: max 30-32 °C during rain, a drop of 1-2 °C from the previous day; forecast highs 31-35 °C for the week.
- Humidity: around 80 % in the morning.
- Waterlogging hotspots: Jhandewalan Temple, Mahipalpur Flyover, Sainik Farm and several low-lying roads.
Official Statements & Responses
- IMD advisory: Red alert until 9 a.m.; later lifted and replaced with a yellow “Be Aware” warning. The department warned of traffic delays, accident risk and water accumulation.
- Delhi airport: Ground teams coordinated with airlines; flight operations continued normally.
- Traffic guidance (Oct 11): Commuters were urged to check conditions, follow advisories and avoid waterlogged routes.
Impact on the Ground
Heavy rain caused waterlogging in multiple neighborhoods, reducing visibility and slowing the morning commute. Drivers in Noida’s Sector 115 and Delhi’s Sainik Farm reported poor visibility, with some using parking lights. The IMD highlighted a heightened risk of vehicle accidents, and local authorities advised caution.
Forecast and Outlook
The IMD’s seven-day forecast issued on the evening of October 12 projects partly cloudy skies and no further rainfall in Delhi from October 13-17. Expected temperature ranges are:
- Oct 13: max 32-34 °C, min 23-25 °C
- Oct 14: max 33-35 °C, min 23-25 °C
- Oct 15: max 31-33 °C, min 23-25 °C
- Oct 16-17: max 32-34 °C, min 22-24 °C
The IMD notes unsettled weather will persist across northern states and the southern peninsula later in October, with additional rain and thunderstorms forecast for Uttarakhand, Himachal Pradesh, Kerala and Tamil Nadu.
Conflicting Reports & Gaps
- Wind speeds: Most outlets cite gusts up to 60 kmph; Hindustantimes reports 62-87 kmph.
- Casualties: No data on injuries or fatalities; reporting is limited to traffic disruption and waterlogging.
The October 12 rain demonstrates how Western Disturbances can generate intense, short-duration storms in Delhi-NCR after the monsoon’s withdrawal, prompting swift alerts, coordinated airport responses and short-term traffic advisories.