Extreme Weather Alert as Cyclone Yaas in Bay of Bengal and South-west Monsoon active. Expect Very Heavy Rains 150mm and Strong Winds 70kmph

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Cyclone Yaas to reach India No direct impact to Sri Lanka Expect Very Heavy Rains and Strong Winds Floods
Cyclone Yaas to reach India No direct impact to Sri Lanka Expect Very Heavy Rains and Strong Winds Floods

The cyclonic storm “YASS” located in East-central Bay of Bengal has intensified in to a severe cyclonic storm. This system is very likely to intensify into a very severer cyclonic storm during next 12 hours. It is very likely to move north-northwestwards and reach near north Odisha and west Bengal coasts by 26th May early morning. Under the influence of the this system, winds over the Sri Lanka and rainy condition is expected to enhance from 24nd May to 26th May, 2021.

Meanwhile South-west monsoon condition has established over the country. Showers or thundershowers will occur at times in Western, Sabaragamuwa, Central, North-Western and Southern provinces. Very heavy falls above 150 mm can be expected at some places in Sabaragamuwa province and in Kandy and Nuwara-Eliya districts while Heavy falls above 100 mm can be expected in Western, North-Western and Southern provinces. A few showers will occur in Northern and North-central provinces.

Wind speed can be increased up to (50-60) kmph at times over the island and especially wind speed can increase up to 70 kmph at times in Western slope of the Central hills, North-Central and North-Western provinces and in Kegalle, Vauniya, Mullaitivu, Mannar, Trincomalee and Hambantota districts.

  • Cyclone Yaas to landfall India on May 26
  • Yaas become Very Severe Cyclonic Storm Maximum wind speed 155-165kmph gusting to 185kmph
  • Expect very heavy rains over 150 mm in Sri Lanka
  • Western, Sabaragamuwa, Central and Southern provinces to receive over 150mm rainfall which may lead to flood situation
  • Strong Winds / Wind speed can be increased up to 70 kmph at times
  • South-west monsoon has established over Sri Lanka
  • Naval and fishing communities are advised not to venture into the East Central Bay of Bengal
  • Water levels of major rivers rising
  • Minor Floods reporting near several rivers
  • Landslide warning has issued to Galle, Kalutara, Ratnapura, Kegalle, Nuwara Eliya and Kandy districts

Parallel to cyclone, South-west monsoon condition is gradually establishing over Sri Lanka. The Southwest Monsoon (Niritha Diga Mosam) is expected to arrive over Sri Lanka in May 25 / 26 according to Department of Meteorology Sri Lanka.

Cyclone Yaas Update – Sri Lanka Weather Update – Monsoon Update article

The low pressure area in the East-central Bay of Bengal has intensify in to Depression. Under the influence of the this system, winds over the Sri Lanka and rainy condition in southwestern part (Western, Sabaragamuwa, Central and Southern provinces) is expected to enhance from 24nd May to 26th May, 2021.

The system is very likely to intensify into a cyclonic storm (Yaas) by May 24th. It is very likely to move northwestwards and reach near west Bengal coasts around 26th May.

ADVISORY FOR WIND
Wind speed can be increased up to (40-50) kmph at times over the island and especially wind speed can increase up to (50-55) kmph at times in Western slope of the Central hills, Northern, North-central, North-western and Uva provinces and in Hambantota district.
ACTION SUGGESTED:
Requested to be attentive about future advisories issued by the Department of Meteorology
in this regard.

Cyclone Yaas Update – Sri Lanka Weather Update – Monsoon Update article

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