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DEPARTMENT OF METEOROLOGY SRI LANKA

WARNING

20-05-2018

ADVISORY

2018-05-20

Heavy Rain and lightning Advisory Issued by the Natural Hazards Early Warning Centre At 01.00 p.m. 20 May 2018 for the period until 09.00 a.m. 21 May 2018

Heavy Rain and lightning Advisory Issued by the Natural Hazards Early Warning Centre At 10.00 p.m. 20 May 2018 for the period until 10.00 a.m. 21 May 2018

Weather Forecasts

Public Weather
Marine Weather
City Forecasts

WEATHER FORECAST FOR 21^st MAY 2018

(Issued at 1200 noon on 20^th May 2018)

Southwest monsoon conditions are getting established over the island.

Prevailing rainy condition along with cloudy skies in the South-west part of the island is expected to continue for tomorrow.

Showers or thundershowers will occur at times in Western, Southern, Sabaragamuwa, Central and North-western provinces.

Showers or thundershowers will occur elsewhere particularly after 2.00 p.m.

Very heavy falls, about 150 mm can be expected at some places in Sabaragamuwa province.

Heavy falls, above 100 mm can be expected at some places, particularly in Western Central and Uva provinces and in Galle and Matara districts.

There may be temporary localized strong winds during thundershowers. General public is kindly requested to take adequate precautions to minimize damages caused by lightning activity.

WEATHER FORECAST FOR SEA AREAS AROUND THE ISLAND DURING

NEXT 24 HOURS (Issued at 1200 noon on 20^th May 2018)

Windy conditions in the sea areas around island and showery condition in the sea area to the South-west of island are expected to enhance today.

Showers or thundershowers will occur at times in the sea areas off the coast extending from Puttalam to Hambantota via Colombo and Galle. Heavy showers can be expected at some places in the above sea area.

Showers or thundershowers will occur several places in the other sea areas.

Winds will be Westerly to South-westerly in direction in the sea areas around the island and speed will be 30-40 kmph.

Sea area extending from Puttalam to Kankasanturai via Mannar and from Mathara to Potuvil via Hambantota can be rough at times as the wind speed can increase up to 60 kmph at times.

Temporarily very strong gusty winds (up to 70-80 kmph)and rough seas can be expected during thundershowers.

Navel and fishing communities are also requested to be vigilant in this regards.

WEATHER FORECAST FOR NEXT 36 HOURS

(ISSUED AT 1600 HOURS ON 20^th May 2018)

Southwest monsoon conditions are getting established over the island. Prevailing rainy condition along with cloudy skies in the South-west part of the island is expected to continue for tomorrow.

Tonight:

Showers or thundershowers will occur at times in most places of the Island.

Very heavy falls, about 150 mm can be expected at some places in Sabaragamuwa, Western provinces and in Galle, Matara districts.

Heavy falls, above 100 mm can be expected at some places, particularly in Central and Uva provinces Tomorrow:

Showers or thundershowers will occur at times in Western, Southern, Sabaragamuwa, Central and North-western provinces.

Showers or thundershowers will occur elsewhere particularly after 2.00 p.m.

Very heavy falls, about 150 mm can be expected at some places in Sabaragamuwa, Western provinces and in Galle Matara districts.

Heavy falls, above 100 mm can be expected at some places, particularly in Central and Uva provinces

There may be temporary localized strong winds during thundershowers. General public is kindly requested to take adequate precautions to minimize damages caused by lightning activity.

Weather Forecast for Main Cities				Date :	21-May-2018
	Temperature (⁰C)		Relative Humidity (%)		Weather
City	Max	Min	Max	Min	Weather
Anuradhapura	32	25	95	65	Showers or thundershowers after 2.00p.m
Batticaloa	32	26	90	75	Showers or thundershowers after 2.00p.m
Colombo	30	25	95	75	Showers or thundershowers at times
Galle	30	24	95	80	Showers or thundershowers at times
Jaffna	33	27	90	70	Several spells of light showers
Kandy	30	22	95	70	Showers or thundershowers after 2.00p.m
Nuwara-Eliya	20	14	95	80	Showers or thundershowers at times
Ratnapura	31	23	95	70	Showers or thundershowers at times
Trincomalee	33	23	95	70	Showers or thundershowers after 2.00p.m
Mannar	32	28	90	70	Showers or thundershowers