Cyclone Burevi | UPSC

Cyclone Burevi | UPSC

Cyclone Burevi | UPSC

      HEADLINES:

Cyclone Burevi hurtling towards Trincomalee on Lanka’s east coast

      WHY IN NEWS:

The cyclone will make a second landfall on December 3-4 along the Tamil Nadu coast

MINISTRY? :- Ministry of Earth Science
SYLLABUS COVERED: GS 1 : Geography : Cyclone

      LEARNING: 

For PRELIMS it is important to understand the causes , landfall and warnings .

For MAINS can you mention few latest technologies used in cyclone prediction ?

      ISSUE: 

Cyclonic Storm ‘Burevi’ over southwest Bay of Bengal (Cyclone Alert for South Tamilnadu and South Kerala coasts: Yellow Message)

CYCLONE BUREVI

  • The Burevi will be the fifth cyclonic storm to take shape into the North Indian Ocean this year.
  • Earlier, Cyclone Nivar, which made its landfall in Puducherry last week.

Cyclone Burevi | UPSC

PHOTO : EARTH NULL SCHOOL | Cyclone Burevi | UPSC

It is expected to first hit Sri Lanka on December 2 and then Tamil Nadu on December 4.

  • Burevi will be the least destructive of all five cyclones formed this year.

CYCLONE PATH TRAJECTORY

  • It is close to north of Trincomalee .
  • It is very likely to move west-northwestwards and cross Sri Lanka coast.

Thereafter, emerge into Gulf of Mannar and adjoining Comorin area on 3rd December morning.

  • The IMD has also predicted isolated heavy to very heavy rainfall over south Tamil Nadu and south Kerala.

NAMING OF CYCLONE

Cyclone Burevi is Suggested by the Maldives.
 

  • Burevi is named in accordance with the guidelines of the World Meteorological Organisation (WMO).
  • Usually, the names of the storms are kept in alphabetical order.
  • The formula was agreed in 2004.
  • For the Indian Ocean region, the naming of cyclones began in 2000.

COUNTRIES INCLUDE
 India, Iran, Qatar, Saudi Arabia, the UAE, Thailand, Sri Lanka, Pakistan, Oman, Myanmar, Maldives, Bangladesh and Yemen.

DEPRESSION

  • The IMD said that a deep depression intensified into cyclonic storm “Burevi” on Tuesday evening.
  • After crossing Thiruvananthapuram, the cyclone would weaken and turn into a depression when it reaches the Arabian Sea.

EYE

  • The eye of the cyclone would be relatively calm.

The eye of the cyclone would be passing over southern Thiruvananthapuram while the spiral rain bands.

  • It is projected outside the eye up to around 100 km .
  • It would create extreme rainfall and strong winds in and around Thiruvananthapuram.

WINDSPEED

The Cyclonic Storm with wind speed of 70-80 gusting to 90 kmph would be centered very close to Pamban around noon of 3rd December. 

  • The cyclone’s current wind speeds are around 75-85 kmph, with gusts of up to 95 kmph.
  • The storm will further intensify slightly to wind speeds of 80-90 kmph, with gusts of up to 100 kmph by the evening of December 2.

LANDFALL

Cyclone Burevi is hurtling towards the eastern coast of Sri Lanka coast. 

  • It will make landfall close to the city of Trincomalee between Batticaloa and Mullaitivu.

ALSO READ : CYCLONE FORECASTING 

IMPACT

  • Heavy to very heavy rainfall at a few places with isolated Extremely heavy falls very likely over south Tamilnadu (Kanniyakumari, Tirunelveli, Thoothukudi).

Cyclone Burevi upsc

SOURCES : IMD

  • Also,over south Kerala (Thiruvananthapuram, Kollam, Pathanamthitta andAlappuzah) heavy rainfall is expected.

Intermittent rainfall, sometimes accompanied by thunder will occur in the Eastern, Northern, North Central and Uva provinces and the Hambantota and Matale districts.

  • Heavy rainfall of more than 100 millimetres (mm) can be expected at some places.
  • The cyclone will bring rain to several places in the North-western province as well.
  • Fairly strong gusty winds (25-40 kmph) can be expected in Northern, North Central, Eastern, North Western and Western provinces.

ALERTS AND WARNING – IMD

  • Sea conditions is very rough to high over southwest Bay of Bengal and along & off east Sri Lanka coast
  • IMD advises total suspension of fishing operation during 2nd to 5th December over the area.

CYCLONE BUREVI VS CYCLONE NIVAR

  • Developed in the Bay of Bengal, the very severe cyclone Nivar, with wind speeds of 89 to 117 km/hr, had hit near Karaikal on November 25.
  • Unstable sea conditions, in the southwest region of Bay of Bengal, continue due to the recent crossing of Nivar.
  • The overall sea conditions currently remain disturbed.
  • There is a high possibility that Cyclone Burevi would not strengthen beyond the intensity of a cyclonic storm.

“Due to upwelling caused by Nivar, Cyclone Burevi will have limited intensity,”-IMD.

  • When such consecutive systems develop in the same region of the ocean, the predecessor system leads to upwelling.

UPWELLING
The process in which cooler waters from lower ocean surfaces are pushed towards upper ocean surfaces.

  • In the absence of warm sea surface conditions, any cyclone, in this case Burevi, will not get enough fuel to intensify further while at sea.
  • Burevi will remain a cyclonic storm (wind speed 62 to 88 km/hr) till December 5, before it weakens into a deep depression.

ALSO READ : CYCLONE AMPHAN 

BACKGROUND

  • Since 1900, there have been 24 cyclones that have impacted Sri Lanka.
  • Fourteen of these cyclones were moderate storms while ten were severe or above.

Two of the recent cyclones that affected the country were Cyclone Roanu in May 2016 and very severe Cyclone Ockhi in November 2017. 

  • Cyclone Roanu caused widespread flooding and landslides in 22 out 25 districts in the country, destroying homes and submerging entire villages.
  • An estimated 301,602 people have been affected by this disaster, including at least 21,484 people who remain displaced from their homes.
  • After that, very severe Cyclone Ockhi in November 2017 also had a major impact on Sri Lanka, with 26 fatalities and great financial losses.

      IASbhai WINDUP: 

  • It will be a double whammy for Tamil Nadu as the state is still trying to assess the damages and recuperate from the damage caused by very severe Cyclone Nivar .
  • The cyclone had destroyed 10,000 hectares of crops in the state .
  • The damage in Andhra Pradesh that got a lot of rainfall from the cyclone was in a huge area of 6.59 lakh hectares.

Cyclone Burevi might also have an impact with rainfall in Karnataka, Andhra Pradesh, Kerala and Telangana.

  • The extent of the impact and damage remains to be seen.
SUGGESTED READING : ALL ABOUT TROPICAL CYCLONES 
     SOURCES:  THE  IE | Cyclone Burevi | UPSC

 

DISCOVER MORE : GS-1

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