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4 Jun 2026Environment & Ecology3 questions

Southwest Monsoon Begins on a Stormy Note, Expected to Be Sluggish After Initial Surge

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Article summary

The southwest monsoon made a stormy onset over Kerala in early June 2026, with the India Meteorological Department (IMD) issuing orange alerts across most of the state, covering eight districts from Ernakulam to Kasaragod on Friday and extending statewide except Thiruvananthapuram, Kollam, and Alappuzha on Saturday. Kerala traditionally marks the official onset point of the southwest monsoon over India, typically around June 1, making this event a critical meteorological milestone for the entire country. The monsoon's arrival triggers a chain of agricultural, hydrological, and economic consequences across India, as nearly 50% of the country's net sown area depends on rain-fed agriculture. Despite the vigorous initial surge, IMD forecasts indicate a sluggish progression after the early burst, raising concerns about temporal distribution of rainfall across the subcontinent. For India, uneven monsoon distribution — even in years of normal aggregate rainfall — can cause simultaneous drought and flood conditions in different regions, underscoring the importance of district-level forecasting and disaster preparedness.

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recallTests whether you read the article and retained key facts.
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applicationTests whether you can apply the concept to a new scenario.
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analysisTests whether you can reason across multiple related facts.
1Q

Sample questions — answers revealed after test

Environment & EcologyRecallEasy

Q1. Which of the following correctly describes the criteria used by the India Meteorological Department (IMD) to declare the onset of the southwest monsoon over Kerala?

ARainfall recorded at 60% or more of 14 designated stations in Kerala for two consecutive days, combined with wind speed thresholds and Outgoing Longwave Radiation (OLR) values
BRainfall recorded at 50% or more of 10 designated stations in Kerala for three consecutive days, combined with sea surface temperature anomalies in the Arabian Sea
CContinuous rainfall for 48 hours across the Western Ghats accompanied by a declared low-pressure system in the Bay of Bengal
DRainfall exceeding 204.4 mm in 24 hours at Thiruvananthapuram, triggering an automatic IMD onset declaration
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Environment & EcologyApplicationMedium

Q2. A district collector in a Kerala coastal district receives an IMD Orange Alert for the next 24 hours. Which of the following responses is most consistent with what an Orange Alert operationally signifies?

AInitiating immediate mandatory evacuation of all coastal villages, as Orange Alert signals extremely heavy rainfall exceeding 204.4 mm
BActivating a preparedness posture — alerting emergency services, pre-positioning relief materials, and advising fishermen not to venture out — as Orange Alert signals heavy to very heavy rainfall of 64.5–204.4 mm
CTreating the alert as advisory only and awaiting a Red Alert before mobilising district disaster response teams, since Orange Alerts are issued routinely and do not require institutional action
DClosing all schools and ordering a complete shutdown of economic activity, as Orange Alert is the highest level of IMD warning and requires the most extreme response
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Environment & EcologyAnalysisHard

Q3. Consider the following statements regarding the southwest monsoon and its implications for India: 1. The Bay of Bengal branch of the southwest monsoon reaches Kerala before the Arabian Sea branch, making it the primary trigger for the official onset declaration over the state. 2. A stormy onset of the monsoon followed by sluggish progression represents intra-seasonal variability (ISV), which can result in simultaneous flood conditions in coastal areas and drought-like conditions in interior regions even when aggregate seasonal rainfall is normal. 3. Under IMD's impact-based warning framework, an Orange Alert requires communities to 'take action', while a Red Alert requires them to 'be prepared'. 4. Sluggish monsoon progression after onset can compress the kharif sowing window, with cascading effects on paddy, pulses, and oilseed production in peninsular and central India. Which of the statements given above are correct?

A1 and 3 only
B2 and 4 only
C1, 2 and 4 only
D2, 3 and 4 only
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