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Topic 247 · Environment, Climate & Biodiversity

WMO: El Nino heading for very strong event

10 MCQs · tap an option to check it · All answers

Revise the 12 points first Book 1 RATNA
  1. Core Trigger: On 3 September 2026 the WMO said El Nino is established and will become very strong, peaking toward end-2026.
  2. Outlook: WMO gives a near-100% likelihood that El Nino persists through February 2027, with impacts continuing into 2027.
  3. Current Head: WMO Secretary-General Celeste Saulo presented the update at a Geneva press conference.
  4. Key Term: The Nino 3.4 index measures Pacific sea-surface temperature anomaly in the central-eastern equatorial Pacific.
  5. Index Data: Nino 3.4 averaged 1.5 C above normal in May-July and reached 2.0 C in July; 1997-98 peaked at +2.4 C.
  6. Phases: ENSO has three phases: El Nino, La Nina and neutral; El Nino brings warmer central-eastern Pacific waters.
  7. India Link: El Nino is linked to a weaker Indian monsoon, raising risk to kharif crops, food prices and water supply.
  8. Headquarters: The WMO is headquartered in Geneva, Switzerland.
  9. Founded: The WMO began operating on 23 March 1950 and became a UN specialised agency in 1951.
  10. Landmark: The WMO Convention was signed in Washington in 1947 and replaced the International Meteorological Organization.
  11. Statute: India's Disaster Management Act, 2005 governs preparedness and response to hazards such as drought.
  12. Definition: El Nino is the periodic warming of the central and eastern equatorial Pacific that disrupts global weather.
Question 1 of 10

Which of the following is/are correct? 1. WMO said on 3 September 2026 that El Nino is established. 2. WMO said it will fade by end-2026.

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Answer: (A) Only 1

Core Trigger: On 3 September 2026 the WMO said El Nino is established and will become very strong, peaking toward end-2026.From Book 1 RATNA, topic 247, point 1

Question 2 of 10

WMO gives a near-100% likelihood that El Nino persists through which month?

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Answer: (A) February 2027

Outlook: WMO gives a near-100% likelihood that El Nino persists through February 2027, with impacts continuing into 2027.From Book 1 RATNA, topic 247, point 2

Question 3 of 10

Who is the WMO Secretary-General?

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Answer: (D) Celeste Saulo

Current Head: WMO Secretary-General Celeste Saulo presented the update at a Geneva press conference.From Book 1 RATNA, topic 247, point 3

Question 4 of 10

What does the Nino 3.4 index measure?

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Answer: (B) Pacific sea-surface temperature anomaly

Key Term: The Nino 3.4 index measures Pacific sea-surface temperature anomaly in the central-eastern equatorial Pacific.From Book 1 RATNA, topic 247, point 4

Question 5 of 10

The 1997-98 El Nino peaked at what Nino 3.4 anomaly?

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Answer: (D) +2.4 C

Index Data: Nino 3.4 averaged 1.5 C above normal in May-July and reached 2.0 C in July; 1997-98 peaked at +2.4 C.From Book 1 RATNA, topic 247, point 5

Question 6 of 10

Which of the following is/are correct? 1. ENSO has three phases: El Nino, La Nina and neutral. 2. El Nino brings warmer central-eastern Pacific waters.

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Answer: (C) Both 1 and 2

Phases: ENSO has three phases: El Nino, La Nina and neutral; El Nino brings warmer central-eastern Pacific waters.From Book 1 RATNA, topic 247, point 6

Question 7 of 10

Where is the WMO headquartered?

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Answer: (C) Geneva

Headquarters: The WMO is headquartered in Geneva, Switzerland.From Book 1 RATNA, topic 247, point 8

Question 8 of 10

On which date did the WMO begin operating?

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Answer: (A) 23 March 1950

Founded: The WMO began operating on 23 March 1950 and became a UN specialised agency in 1951.From Book 1 RATNA, topic 247, point 9

Question 9 of 10

In which city was the WMO Convention signed in 1947?

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Answer: (B) Washington

Landmark: The WMO Convention was signed in Washington in 1947 and replaced the International Meteorological Organization.From Book 1 RATNA, topic 247, point 10

Question 10 of 10

Which Indian law governs preparedness and response to hazards such as drought?

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Answer: (D) Disaster Management Act, 2005

Statute: India's Disaster Management Act, 2005 governs preparedness and response to hazards such as drought.From Book 1 RATNA, topic 247, point 11

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