Delhi logs 8% rain surplus amid rain-deficient northwest India
Delhi recorded an 8% seasonal rainfall surplus as of Sept 16, within a Haryana meteorological subdivision facing a 23% deficit and a northwest India region with a 10% shortfall. Over 30 districts, including Sonipat (-32%), Rohtak (-47%), Hoshiarpur (-53%) and Kapurthala (-69%), were rain-starved. IMD said El Nino shifted Bay of Bengal low-pressure systems northward, while 16 western disturbances in June-August interacted with monsoon systems to intensify Delhi's rain.
Source
Times of India — Top · read the original report ↗
Desk check · compared with the source
What the desk checked (5)
- As of Sept 16, Delhi had an 8% seasonal rainfall surplus while the Haryana subdivision had a 23% deficit and northwest India a 10% shortfall. — Figures appear in the source, attributed to season rainfall data; no separate document cited.
- A 2024 Climate Dynamics study found Bay of Bengal depressions averaged 3.9 in July-August in El Nino years versus 2.4 in normal years for 1979-2020. — Attributed to a named journal study in the source.
- IMD DG Mrutyunjay Mohapatra said subsidence over south India in El Nino years prevents LPS formation in southern latitudes. — Direct quote attributed to a named official.
- There were 16 western disturbances in June-August, eight in August alone, and 10 LPSs including four depressions in July-August. — Figures attributed to IMD in the source.
- Interactions caused the Bandipora cloudburst, fatal flash floods in Chamba and closure of about 290 roads in HP and Uttarakhand. — Stated in source without separate attribution; casualty numbers not given.
Analysts’ view opinion
This is a weather story, but its political edges are easy to see. Delhi's 8% seasonal surplus sits right next to a Haryana subdivision running a 23% deficit — meaning the capital's politics will revolve around urban flooding and drainage, while governments in Haryana and Punjab face questions on crop loss, drought relief and compensation. With over 30 deficient districts including Sonipat (-32%), Rohtak (-47%), Hoshiarpur (-53%) and Kapurthala (-69%), rural discontent has a geographically concentrated address.
- A wet capital beside sharply deficient neighbouring districts is ready-made material for inter-state friction over relief funds and water sharing.
- Punjab's worst-hit districts like Kapurthala (-69%) and Hoshiarpur (-53%) could sharpen state-versus-Centre blame exchanges on groundwater, power subsidy and crop compensation.
- A 23% deficit across the Haryana subdivision puts incumbents on the defensive in rural belts and hands the opposition a farmer-focused campaign line.
- Delhi's surplus is not a governance achievement — IMD attributes it to El Nino-linked northward shift of Bay of Bengal low-pressure systems and 16 western disturbances between June and August.
- The story hints at climate variability becoming an electoral accountability issue — preparedness, relief and compensation — rather than only an environmental debate.
What to watch — Watch how quickly drought declarations, crop-loss surveys and compensation demands from the deficient districts of Haryana and Punjab enter the political agenda.
The story is purely meteorological and establishes no party reaction, government relief announcement or electoral consequence — those inferences are mine, not reported facts.
Deep dive
Research brief · 8 facts · 7 dates · exam-readyThe brief
Context
India's monsoon rainfall in the northwest is largely delivered by low-pressure systems (LPSs) that travel inland from the Bay of Bengal, and, increasingly, by western disturbances (WDs) that linger into the monsoon months. In the 2023-style season described here, as of Sept 16, Delhi ended up with an 8% seasonal rainfall surplus even though the Haryana meteorological subdivision it belongs to had a 23% deficit and northwest India as a whole a 10% shortfall. IMD attributes this anomaly to a northward shift in the tracks of Bay of Bengal systems, probably under El Nino influence, plus repeated interactions between monsoon systems and western disturbances over Delhi-NCR.
Key facts
- As of Sept 16, Delhi had a seasonal rainfall surplus of 8%, while the Haryana meteorological subdivision had a 23% deficit and northwest India a 10% shortfall.
- Over 30 districts in Haryana, Punjab, adjoining Rajasthan, Himachal and west UP were rain-starved.
- District deficits included Sonipat (-32%), Rohtak (-47%), Hoshiarpur (-53%) and Kapurthala (-69%).
- The season saw 10 low-pressure systems, including four depressions in July-August, against a normal of less than nine.
- In August alone, six LPSs including two depressions impacted India, tracking north-northwest after entering over north Odisha-Bengal.
- A 2024 Climate Dynamics study found Bay of Bengal depressions averaged 3.9 during July-August in El Nino years versus 2.4 in normal years, for 1979-2020.
- IMD recorded 16 western disturbances in June-August, eight of them in August alone.
- Delhi's heaviest rain spells (July 8-9, July 29, Aug 7-8, Aug 25) all coincided with a monsoon system and a WD being simultaneously active.
Timeline
- 1979-2020 (study period)Climate Dynamics 2024 study finds more Bay of Bengal depressions in El Nino years (3.9 vs 2.4 in July-Aug).
- June-August (this season)16 western disturbances recorded by IMD, including eight in August.
- July 2Monsoon onset over Delhi occurred during an active western disturbance spell.
- July 8-9 and July 29Heavy rain spells in Delhi with both a monsoon system and a WD active.
- July-AugustTen LPSs including four depressions; six LPSs with two depressions in August alone.
- Aug 7-8 and Aug 25Further heaviest rain spells in Delhi during simultaneous monsoon-WD activity.
- As of Sept 16Delhi logs 8% seasonal surplus; Haryana subdivision -23%, northwest India -10%.
Who has a stake
- Delhi-NCR residents and civic agencies — An 8% surplus with repeated heavy spells means urban flooding and drainage stress even as neighbouring areas stay dry.
- Farmers in Haryana and Punjab — Deficits up to -69% (Kapurthala) and -47% (Rohtak) threaten kharif water availability and raise irrigation dependence.
- IMD (India Meteorological Department) — Must explain and forecast anomalous, sub-subdivision-scale rainfall patterns; DG Mrutyunjay Mohapatra cited El Nino-linked subsidence.
- Hill states - Himachal Pradesh, Uttarakhand, J&K — Monsoon-WD interactions caused the Bandipora cloudburst, fatal Chamba flash floods and closure of around 290 roads.
- Climate scientists — Late retreat of the jet stream, attributed to global warming, is making monsoon-season WDs more frequent.
Why it matters
The story shows how rainfall is becoming sharply localised: a capital city can be in surplus while districts a few dozen kilometres north are in severe deficit, which complicates water management, agriculture planning and disaster preparedness. It also links two large-scale drivers - El Nino-driven shifts in Bay of Bengal system tracks and global-warming-linked persistence of western disturbances into the monsoon - to concrete Indian outcomes, from Delhi's heavy spells to cloudbursts and road closures in the hills.
UPSC angle
Prelims pointers
- Delhi falls under the Haryana meteorological subdivision for IMD rainfall accounting; it logged +8% while the subdivision was -23%.
- Northwest India's seasonal shortfall as of Sept 16 was 10%.
- Low-pressure systems (including depressions) from the Bay of Bengal drive most monsoon rain in northwest and central India.
- Western disturbances originate over the Mediterranean and move east; they are rare in the monsoon because the jet stream shifts north of the Himalayas by April-May.
- IMD Director General named in the source: Mrutyunjay Mohapatra.
- 2024 Climate Dynamics study: July-August Bay of Bengal depressions averaged 3.9 in El Nino years vs 2.4 in normal years (1979-2020).
Mains framing
Delhi's 8% monsoon surplus inside a 23% deficit subdivision illustrates how large-scale circulation changes translate into extreme spatial variability of Indian rainfall. Two mechanisms are identified in the source: first, El Nino-related subsidence over south India suppressed LPS formation in the central Bay, pushing systems to enter over north Odisha-Bengal and track north-northwest across UP, Uttarakhand and Delhi rather than towards Rajasthan, Haryana and Punjab - even though the count of systems (10 LPSs, four depressions in July-August) was above the normal of under nine. Second, a late-retreating jet stream, which scientists attribute to global warming, allowed an unusual 16 western disturbances in June-August, whose interaction with easterly monsoon systems intensified rain over Delhi and west UP on specific dates and produced disasters in the hills (Bandipora cloudburst, Chamba flash floods, around 290 roads closed). The implications are twofold: deficit belts in Punjab-Haryana face groundwater and kharif stress while surplus pockets face urban flooding, so the way forward lies in finer-scale monitoring and forecasting below the subdivision level, district-specific drought and flood response, and city drainage and hill-slope planning calibrated to monsoon-WD interaction events.
Key terms
- Low-pressure system (LPS)
- Moisture-laden weather system, including depressions, forming over the Bay of Bengal and moving inland to deliver monsoon rain.
- Western disturbance (WD)
- Moist wind system moving east from the Mediterranean, normally bringing winter to early-summer rain to north India.
- El Nino
- Pacific warming phase that, per the source, causes subsidence over south India and shifts Bay of Bengal system tracks northward.
- Meteorological subdivision
- IMD's unit for reporting rainfall; Delhi is grouped under the Haryana subdivision.
- Jet stream
- High-altitude wind belt that drives western disturbances; its late retreat north of the Himalayas is linked to global warming.
- Cloudburst
- Extremely intense, short-duration rainfall event, such as the one reported in Bandipora, J&K.
Practice questions
- How do El Nino conditions alter the tracks of Bay of Bengal low-pressure systems, and why did this favour Delhi over Punjab and Haryana this monsoon?
- Discuss the growing role of western disturbances during the Indian summer monsoon and their implications for extreme rainfall in the Himalayan states.
- Rainfall averages at the subdivision level can mask district-level distress. Examine with reference to the 2023-style monsoon pattern in northwest India.
Grounded only in the source report — figures and dates are the source's, not inferred.