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IMD has issued a Day‑1 heavy rain warning for Haryana, Chandigarh and Delhi on September 4. Expect intermittent spells with brief intense bursts that can quickly flood low‑lying stretches and underpasses. Check IMD’s district nowcast and Delhi radar before stepping out. Both refresh through the day and capture fast‑moving cells.
Timing bands to watch include a quieter morning, heavier afternoon convection, and a possible evening round. IMD nowcasts are radar‑led and refresh frequently, so windows can shift by 60–90 minutes. Recheck late morning and mid‑afternoon for updated tracks, then again before the evening commute.
IMD heavy rain alert Delhi‑NCR: commute and flight buffers
Road speeds on Outer Ring Road, NH‑48 and airport approaches drop during heavy showers. Plan buffers rather than sprints. Delhi Airport advises arriving two hours before domestic departures and three hours for international. The Airport Express Line remains the quickest fallback in city traffic. Air India’s city check‑in at New Delhi and Shivaji Stadium can trim terminal time. If possible, start before the first‑hour peak or after it clears.
| Mode | Buffer today | Notes |
|---|---|---|
| Domestic flights | 2 hours + 30–45 minutes | Switch to Airport Express if roads clog. |
| International flights | 3 hours + 45 minutes | Consider Air India city check‑in at New Delhi/Shivaji Stadium. |
| Metro | +10–15 minutes at interchanges | Track service updates on the DMRC X handle. |
Waterlogging hotspots: Delhi‑NCR choke points to avoid
If rain bands stall, avoid hotspots flagged by traffic police and civic agencies. In Delhi, Minto Bridge, Pul Prahladpur, Zakhira underpass, ITO‑Tilak Bridge and Ashram approaches flood repeatedly. Expect slowdowns near Azadpur and Jahangirpuri Metro station approaches during heavy rain. In Gurugram, Hero Honda Chowk, Rajiv Chowk, Narsinghpur and Golf Course Extension Road clog fast. Service lanes on NH‑48 and pockets near IFFCO Chowk also back up.
IMD outlook for September 5–6: plan around easing rain
IMD flags heavy rain potential for Saturday, September 5, with easing on Sunday, September 6. If plans are flexible, prioritise indoor tasks today and early Saturday, then review nowcasts. Use IMD’s district nowcast and the Delhi radar for live checks. Also follow the Delhi Metro and Delhi Traffic Police feeds for detours.