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IMD Forecasts Early Monsoon Onset Over Kerala on May 26, Projects Below-Normal Rainfall (80 cm) Due to El Niño

Target:UPSC GS-IIIMPSCSSC GATeachingPrelims HighMains MediumStatic GK Link
15 May 2026
~2 min
Source: The Hindu
Key Data:May 26, 2026± 4 days80 cm87 cm (LPA 1971-2020)70% of annual rainfall
Bodies:IMD
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What This Article Covers

1.The India Meteorological Department (IMD) forecasts the onset of the Southwest Monsoon over Kerala on May 26, 2026, with a model error of ± 4 days.

2.IMD projects below-normal seasonal rainfall of 80 cm against the Long Period Average (1971-2020) of 87 cm, attributing it to evolving El Niño conditions in the Pacific.

3.The monsoon's onset marks the transition from the hot, dry season to the rainy season and is critical for the Indian economy, bringing about 70% of the annual rainfall.

The Big Picture
Prelims · HighMains · Medium

The India Meteorological Department (IMD) has forecasted an early onset of the Southwest Monsoon over Kerala on May 26, four days before its normal date of June 1. More critically, it has projected below-normal seasonal rainfall (80 cm vs LPA of 87 cm) for the country, primarily due to evolving El Niño conditions, which could impact agriculture and water resources.

Exam Lens

Quick Exam Facts From News

Forecast Onset DateMay 26, 2026
Normal Onset DateJune 1
Model Error Margin± 4 days
Projected Seasonal Rainfall80 cm
Long Period Average (LPA)87 cm (1971-2020)
Monsoon Contribution~70% of annual rainfall

1-Minute Revision

  • ›Forecast Onset Date: May 26, 2026
  • ›Normal Onset Date: June 1
  • ›Target this Data: Forecast onset date (May 26, 2026) and model error (± 4 days).
  • ›Target this Nodal Body: India Meteorological Department (IMD) under the Ministry of Earth Sciences.
  • ›Target this Statistic: Projected seasonal rainfall (80 cm) vs. Long Period Average (87 cm for 1971-2020).

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Q1Static LinkageEasy

The India Meteorological Department (IMD), which forecasts the monsoon onset, operates under which Union Ministry?

Q2Statement-basedHard

Consider the following statements regarding the Southwest Mononset forecast for 2026:

1. The IMD has forecast its onset over Kerala on May 26 with a model error of ± 4 days.

2. The normal date for the monsoon onset over Kerala is June 1.

3. The IMD has projected above-normal seasonal rainfall for India due to the emergence of La Niña conditions.

Which of the statements given above is/are correct?

Q3Data-centricMedium

According to the IMD forecast mentioned in the article, what is the projected total rainfall for the 2026 monsoon season?

Q4Application/ImpactMedium

What is the primary climatological reason cited by the IMD for the projection of below-normal monsoon rainfall in 2026?

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