PIB SUMMARY 30th MAY

admin
By admin May 30, 2019 11:03

PIB SUMMARY 30th MAY

Severe Heat Wave conditions over plains of Northwest India

Context:

  • For the last 4-5 days, the sky is mainly clear over Northwest India and there is no thundershower activity.

Details:

  • As a result, rise in maximum temperatures by around 2-4 °C were experienced over parts of Northwest India including Delhi NCR.
  • Heat Wave conditions also developed over parts of Uttar Pradesh, Rajasthan and Delhi NCR.
  • The highest maximum temperature in the plains of Northwest India was 47.6°C recorded at Prayagraj (Uttar Pradesh) on 29 May 2019.
  • Weather observations are indicating mainly clear sky over plains of Northwest India including Delhi-NCR till 3 June.
  • Advection of heat from west, subsidence over the region and lack of Rain/Thunderstorm activity will lead to further rise in Maximum temperatures by about 2°C in the region.
  • A Western Disturbance is likely to affect western Himalayan region mainly from 02 June. However, it is unlikely to cause significant Thunderstorm activity over the plains.

Heat Waves Warnings for next 4-5 days

  • Heat wave conditions likely to prevail at isolated places over Jammu area during next 72 hours.
  • Heat wave conditions likely to prevail at many places with Severe heat wave at a few places over East Uttar Pradesh and West Rajasthan.
  • Heat wave conditions likely to prevail at many places with Severe heat wave at isolated places over West Uttar Pradesh, Haryana, Delhi NCR and East Rajasthan.
  • Heat wave conditions likely at a few places over Punjab and Chandigarh.

Background Check:

What is a Heat Wave?

  • Well, the heat wave is considered if maximum temperature of a station reaches at least 40°C or more for the Plains, 37°C or more for coastal stations and at least 30°C or more for Hilly regions.
  • Following criteria are used to declare heat wave:
  1. Based on Departure from Normal:
  • Heat Wave: The departure from normal is 4.5°C to 6.4°C.
  • The severe Heat Wave: The departure from normal is >6.4°C.
  1. Based on Actual Maximum Temperature (for plains only):
  • Heat Wave: When actual maximum temperature ≥ 45°C
  • Severe Heat Wave: When actual maximum temperature ≥47°C
  • To declare heat wave, the above criteria should be met at least in 2 stations in a Meteorological sub-division for at least two consecutive days and it will be declared on the second day.

Concerns:

  • Higher daily peak temperatures and longer, more intense heat waves are becomingly increasingly frequent globally due to climate change.
  • In fact, India is also feeling the impact of climate change in the terms of increased instances of heat waves which are more intense in nature with each passing year, and have a devastating impact on human health.
  • Moreover, the health impacts of Heat Waves typically involve dehydration, heat cramps, heat exhaustion and/or heat stroke.
  • Children, the elderly and those with pre-existing morbidities are particularly vulnerable.

Read More: Daily Indepth Articles Read More: Other Important Articles

admin
By admin May 30, 2019 11:03