Phone:(+94)81-2376746,4922992   E-mail:climate@sltnet.lk     Website: http://www.climate.lk

Friday, July 31, 2020

Climate Bulletin For Sri Lanka (31 July 2020)

 



                        Highlights                             

   The NOAA weekly rainfall forecast predicts up to 150 mm in Colombo, Galle, Kalutara, Matara, Ratnapura and Hambantota districts during 27th July -1st August. 
   •  Between 19th July - 25th  July: up to 50 mm of rainfall was recorded in Galle, Matara and Badulla district on 23rd July.
   From 22 th- 28th July: up to 10 km/h, northwesterly winds were experienced by the entire island
   0C above average sea surface temperature was observed in the seas around Sri Lanka.





Monitoring

Rainfall

Weekly Monitoring:

Date

Rainfall

19th July

Up to 40 mm in Badulla, Puttalam, Gampaha and Kurunegala districts; up to 30 mm in Ampara, and Hambantota districts; and up to 20 mm in Colombo, Kegalle, Katutara, Ratnapura, Monaragala, Matale, Kandy and Polonnaruwa districts; up to 15 mm in Galle, Mannar and Anuradhapura districts; up to 10 mm in Matara, Nuwara Eliya, Vavuniya, Mullaitivu and Kilinochchi districts.

20th July

Up to 40 mm in Jaffna district; up to 30 mm in Kilinochchi district; up to 15 mm in Kalutara, Galle, Matara, and Hambantota districts; and up to 10 mm in Mannar, Kilinochchi, Vavuniya, Puttalam, Gampaha, Colombo, Ratnapura, Nuwara Eliya, Badulla, Monaragala and Ampara districts.

21st July

Up to 2.5 mm in Monaragala, Batticaloa and Ampara Districts.  

22nd July

Up to 10 mm in Gampaha, Puttalam, Kurunegala, Kegalle, Kandy, Matale, Nuwara Eliya, Polonnaruwa, Badulla, Ampara and Batticoloa districts.

23rd July

Up to 50 mm in Galle, Matara and Badulla districts; up to 40 mm in Monaragala district; up to 30 mm in Nuwara Eliya, Kandy, Colombo, Kalutara and Hambantota districts; up to 20 mm in Gampaha, Ratnapura and Ampara districts; and up to 15 mm in Trrincomalee district; and up to 10 mm in Kurunegala, Matale, Polonnaruwa, Anuradhapura and Kegalle districts.

24th July

Up to 30 mm in Ampara and Batticaloa districts; and up to 20 mm in Monaragala district.

25th July

Up to 15 mm in Mannar district; and up to 10 mm in Colombo, Gampaha, Katutara, Ratnapura, Galle, and Vavuniya districts.


Total Rainfall for the Past Week: 

The RFE 2.0 tool shows total up to 50– 75 mm in Monaragala, Badulla, Ampara, Mannar, Jaffna and Batticaloa districts; up to 25 – 50 mm in Kilinochchi, Mullaitivu, Puttalam, Vavuniya, Trincomalee, Anuradhapura, Polonnaruwa, Kurunegala, Matale,  Ratnapura, Colombo, Gampaha, Kalutara, Kandy, Matale, Nuwara Eliya, Galle, Matara and Hambantota districts.

Above rainfall average up to 50-100 mm in Ampara, Badulla, Jaffna, Kilinochchi, Mannar and Monaragala districts; up to 25 – 50 mm in Mullaitivu, Vavuniya, Trincomalee, Batticaloa, Anuradhapura, Polonnaruwa, Kurunegala, Matale, Kandy, Nuwara Eliya, Ratnapura, Galle, Matara and Hambantota districts; and up to 10-25 mm in Colombo, Gampaha, Kalutara, Puttalam and Kegalle districts.

 

Monthly Monitoring

During June – Above average rainfall conditions up to 6 mm were experienced by Vavuniya and Anuradhapura districts; up to 4 mm in Mannar, Kurunegala, Polonnaruwa, Trincomalee, Kegalle, Kandy, Badulla, Ampara, Batticaloa, Monaragala and Hambantota districts and below average rainfall conditions upto 2 mm were experienced by Galle, Matara and Ratnapura districts.


 Predictions


Rainfall


14-day prediction: 

NOAA NCEP models: 

From 30th July – 5th August: Total rainfall up to 45 mm in Kalutara, Colombo, Galle, Matara, Ratnpura and Hambantota districts; up to 35 mm in Gampaha, Kegalle, Badulla, Nuwara Eliya, and Monaragala districts; up to 25 mm in Kandy, Matale, Kurunegala, Puttalam, Polonnaruwa, Anuradhapura and Ampara districts; and up to 15 mm in Mannara and Vavuniya districts. 

From 6th August – 12th August: Total rainfall up to 55 mm in Kalutara, Kegalle, Ratnapura, Galle and Matara, districts; up to 45 mm in Colombo, Gampaha, Kandy, Hambantota, Badulla, Nuwara Eliya, and Monaragala districts; up to 35 mm in Matale, Kurunegala, Puttalam, Trincomalee and Anuradhapura districts; and up to 25 mm in Mannar, Batticaloa , Mullaitivu, Polonnaruwa, Ampara and Vavuniya districts. 


IRI Model Forecast: 

From 27th July – 1st August: Total rainfall up to 150 mm in Gampaha, Colombo, Kalutara, Galle, Matara, Ratnapura and Kegalle districts; up to 100 mm in Puttalam, Kurunegala, Kandy and Nuwara Eliya; up to 75 mm in Hambantota and up to 50 mm in Anuradhapura , Polonnaruwa, Matale, Badulla, Monaragala, Ampara, Batticaloa, Trincomalee, Vavuniya, Mullaitivu, Kilinochchi and Jaffna districts.

MJO based OLR predictions:

For the next 15 days: 
MJO shall enhance rainfall during 29th July - 2nd August and shall remain neutral during 3rd – 12th August.

Ocean State (Text Courtesy IRI)

Pacific sea state: June 24, 2020 

SSTs in the east-central Pacific decreased to near the La Niña threshold in early June, and the atmospheric variables were either ENSO-neutral or indicative of weak La Niña conditions. The average of the forecasts of many models just short of the borderline of weak La Niña SST conditions through fall, becoming slightly weaker beginning in early winter. The official CPC/IRI outlook is somewhat similar to these model forecasts, calling for a likely continuation of ENSO-neutral in summer, with approximately equal chances of ENSO-neutral or La Niña for fall and winter. 

Indian Ocean State

0C above average sea surface temperature was observed in the seas around Sri Lanka.

Friday, July 24, 2020

Climate Bulletin for Sri Lanka (24 July 2020)

 

                        Highlights                             

   The NOAA weekly rainfall forecast predicts up to 50 mm in Colombo, Galle, Kalutara, Kandy, Matara, Matale,Badulla, Ratnapura,Kegalle,Nuwara Eliya, Monaragala, Mullaitivu, Anuradhapura, Tincomalee, Polonnaruwa and Batticaloa districts during 22nd -28th June.
   Between 16th June - 22nd  July: up to 90 mm of rainfall was recoreded in Nuwara Eliya district on 18th July.
   From 2nd- 9th June: up to 8 km/h, northwesterly winds were experienced by the entire island.
  1.5 0C above average sea surface temperature was observed in the seas around Sri Lanka.




Monitoring

Rainfall

Weekly Monitoring:

Date

Rainfall

16th July

Up to 70 mm in Ampara and Batticaloa districts; up to 40 mm in Badulla and Monaragala districts; and up to 30 mm in Polonnaruwa and Matale districts; up to 20mm in Gampaha, Colombo, Kegalle, Ratnapura and Kandy; up to 15 mm in Jaffna, Kilinochchi, Mannar, Mullaitivu, Puttalam, Vavuniya, Anuradhapura, Kurunegala, Nuwara Eliya, Kalutara, Galle, Matara and Hambantota districts; and up to 10 mm in Trincomalee district.

17th July

Up to 15 mm in Hambantota, Galle, Matara, Monaragala, Badulla, Ratnapura and Ampara districts; and up to 10 mm in Kalutara, Colombo, Gampaha, Kegalle, Kurunegala, Kandy and Nuwara Eliya districts.

18th July

Up to 90 mm in Nuwara Eliya district; up to 80 mm in Kandy district; and up to 70 mm in Badulla and Kegalle, districts; up to 60 mm in Kurunegala, Gampaha, Colombo, Ratnapura, Matale and Monaragala districts; up to 40 mm in Puttalam district; up to 30 mm in Matara, Hambantota, Polonnaruwa, Mannar, Vavuniya, Mullaitivu and Polonnaruwa districts; up to 20 mm in Anuradhapura, Trincomalee, Ampara, Hambantota and Mullaitivu districts; and up to 10 mm in Jaffna and Kilinochchi districts. 

19th July

Up to 40 mm in Badulla, Puttalam, Gampaha and Kurunegala districts; up to 30 mm in Ampara, and Hambantota districts; and up to 20 mm in Colombo, Kegalle, Katutara, Ratnapura, Monaragala, Matale, Kandy and Polonnaruwa districts; up to 15 mm in Galle, Mannar and Anuradhapura districts; up to 10 mm in Matara, Nuwara Eliya, Vavuniya, Mullaitivu and Kilinochchi districts.

20th July

Up to 40 mm in Jaffna district; up to 30 mm in Kilinochchi district; up to 15 mm in Kalutara, Galle, Matara, and Hambantota districts; and up to 10 mm in Mannar, Kilinochchi, Vavuniya, Puttalam, Gampaha, Colombo, Ratnapura, Nuwara Eliya, Badulla, Monaragala and Ampara districts.

21st July

Up to 2.5 mm in Monaragala and Ampara Districts.

22nd July

Up to 10 mm in Gampaha, Puttalam, Kurunegala, Kegalle, Kandy, Matale, Nuwara Eliya, Polonnaruwa, Badulla, Ampara and Batticoloa districts.


Total Rainfall for the Past Week: 
The RFE 2.0 tool shows total up to 75 – 100 mm in Colombo, Gampaha, Kegalle, Kandy and Nuwara Eliya districts; up to 50 – 75 mm in Puttalam, Ratnapura, Kalutara, Badulla, Monaragala, Matale, Ampara and Kurunegala districts; up to 25-50 mm in Mannar, Vavuniya, Anuradhapura, Jaffna, Kilinochchi, Polonnaruwa, Batticaloa, Hambantota, Galle and Matara districts; and up to 10 – 25 mm in Mullaitivu, Trincomalee districts.


Above rainfall average up to 50-100 mm in Gampaha, Colombo, Kegalle, Ratnapura, Nuwara Eliya, Badulla and Kandy districts; up to 25 – 50 mm in Puttalam, Kurunegala, Matale, Ampara, Batticaloa, Monaragala, Polonnaruwa, Mannar, Vavuniya, Jaffna and Hambantota districts; and up to 10 – 25 mm in Kilinochchi, Mullaitivu, Anuradhapura, Galle, Matara and Kalutara districts.

 

Monthly Monitoring

During June – Above average rainfall conditions up to 6 mm were experienced by Vavuniya and Anuradhapura districts; up to 4 mm in Mannar, Kurunegala, Polonnaruwa, Trincomalee, Kegalle, Kandy, Badulla, Ampara, Batticaloa, Monaragala and Hambantota districts and below average rainfall conditions upto 2 mm were experienced by Galle, Matara and Ratnapura districts.


 Predictions


Rainfall


14-day prediction: 

NOAA NCEP models: 

From 23rd July – 29th July: Total rainfall up to 75 mm in Galle, Matara and Ratnapura districts; up to 65 mm in Nuwara Eliya, Badulla, Kegalle, Monaragala and Hambantota districts; up to 55 mm in Gampaha and Kandy districts; up to 45 mm in Puttalam, Kurunegala and Ampara districts; up to 35 in Matale, Polonnaruwa and Batticaloa districts; and upto 25 mm in Anuradhapura district.

From 30th July – 05th August: Total rainfall up to 65 mm in Kalutara, Colombo, Galle, Matara, Ratnpura, Hambantota districts; up to 55 mm in Gampaha, Kegalle, Badulla, Nuwara Eliya, Kilinochchi, Mullaitivu, Vavuniya, Jaffna, Trincomalee and Anuradhapura districts; up to 45 mm in Kandy, Matale, Kurunegala, Mannar, Polonnaruwa and Ampara districts; and up to 35 mm in Puttalam, Batticaloa districts. 

IRI Model Forecast: 

From 23rd July – 28th July: Total rainfall up to 50 mm in Colombo, Kalutara, Galle, Matara, Ratnapura, Kegalle, Nuwara Eliya, Kandy, Monaragla, Badulla, Matale, Mullaitivu, Anuradhapura, Polonnaruwa, Trincomalee and Batticaloa districts.

MJO based OLR predictions:

For the next 15 days: 
MJO shall significantly enhance rainfall during 22nd July - 10th August and shall remain neutral during 11th – 15th August.

Ocean State (Text Courtesy IRI)

Pacific sea state: June 24, 2020 

SSTs in the east-central Pacific decreased to near the La Niña threshold in early June, and the atmospheric variables were either ENSO-neutral or indicative of weak La Niña conditions. The average of the forecasts of many models just short of the borderline of weak La Niña SST conditions through fall, becoming slightly weaker beginning in early winter. The official CPC/IRI outlook is somewhat similar to these model forecasts, calling for a likely continuation of ENSO-neutral in summer, with approximately equal chances of ENSO-neutral or La Niña for fall and winter. 

Indian Ocean State
1 0C above average sea surface temperature was observed in the seas around Sri Lanka.

Friday, July 17, 2020

Climate Bulletin For Sri Lanka (17 July 2020)

 



                        Highlights                             

   The NOAA weekly rainfall forecast predicts up to 100 mm in Colombo, Kalutara and Galle districts during 16th - 21st July. 
   •  Between 8th - 9th  July: up to 110 mm of rainfall was recorded in Anuradhapura,  and Polonnaruwa districts on 8th and 9th July.
  From 8th- 14th July: up to 15 km/h, northwessterly winds were experienced by the entire island.
  1.5 0C above average sea surface temperature was observed in the seas around Sri Lanka.





Monitoring

Rainfall

Weekly Monitoring:

Date

Rainfall

8th July

Up to 110 mm in Anuradhapura district, up to 100 mm in Matale, district; up to 90 mm in Polonnaruwa district; up to 80 mm in Vavuniya district; up to 40 mm in Kandy and Nuwara Eliya districts; up to 30 mm in Ratnapura, Badulla, Monaragala, Hambantota, Puttalam and Kurunegala districts; and up to 20 mm in Colombo, Kalutara, Galle, Matara, Kegalle, Mannar, Jaffna, Kilinochchi and Mullaitivu districts

9th July

Up to 110 mm in Polonnaruwa district; up to 100 mm in Matale district; up to 90 mm in Ampara district; up to 80 mm in Kurunegala, Anuradhapura, Badulla and Puttalam districts; up to 50 mm in Mannar, Vavuniya, Mullaitivu, , Kandy, Ratnapura, Monaragala, and Trincomalee districts; up to 20 mm in Gampaha, Colombo and Kalutara districts.

10th July

Up to 100 mm in Monaragala and Ampara districts; up to 90 mm in Vavuniya district; up to 80 mm in Anuradhapura district; up to 50 mm in Trincomalee and Badulla districts; up to 40 mm in Ratnapura and Nuwara Eliya districts; up to 30 mm in Polonnaruwa and Mannar districts; and up to 20 mm in Puttalam, Kurunegala, Kalutara, Kandy and Kegalle districts; and up to 15 mm in the rest of the island except Jaffna.  

11th July

Up to 40 mm in Mullaitivu, Ampara and Monaragala districts; up to 30 mm in Kilinochchi, Colombo and Kalutara districts; up to 20 mm in Nuwara Eliya, Badulla, Gampaha, Kegalle, Kandy, Batticaloa, Polonnaruwa and Trincomalee districts; up to 15 mm in Galle, Matara, Hambantota and Jaffna districts; up to 10 mm in Kurunegala, Puttalam, Anuradhapura, Matale and Mannar districts.

12th July

Up to 20 mm in Kalutara district; up to 15 mm in Colombo, Ratnapura and Galle district; up to 10 mm in Gampaha, Batticaloa and Kegalle districts; and up to 5 mm in Matara, Monaragala, Badulla, Nuwara Eliya, Kandy, Anuradhapura, Ampara and Trincomalee districts. 

13th July

Up to 40 mm in Monaragala and Ampara districts; up to 30 mm in Anuradhapura, Mannar, Vavuniya, Trincomalee and Mullaitivu districts; up to 20 mm in Kilinochchi, Jaffna, Galle, Puttalam and Ratnapura districts; up to 10 mm in Nuwara Eliya, Badulla, Matara, Hambantota and Kalutara districts; and up to 5 mm in the rest of the island.

14th July

Up to 30 mm in Hambantota and Monaragala districts; up to 20 mm in Matara district; up to 10 mm in Jaffna, Vavuniya, Mullaitivu and Galle districts; and up to 5 mm in Anuradhapura, Puttalam, Trincomalee, Mannar, Kilinochchi, Kalutara and Ratnapura districts.


Total Rainfall for the Past Week: 

The RFE 2.0 tool shows total up to 75 – 100 mm in Anuradhapura, Polonnaruwa, Vavuniya, Monaragala, Ampara and Matale districts; up to 50 – 75 mm in Mannar, Mullaitivu and Kurunegala, Badulla districts; up to 25 -50 mm in the rest of the island while up to 10 – 25 mm in Batticaloa and Jaffna districts. 

Above rainfall average up to 50-100 in Anuradhapura, Polonnaruwa, Matale, Ampara, Vavuniya and Monaragala districts; up to 25 – 50 mm in Badulla, Kandy, Kurunegala, Puttalam, Trincomalee, Mannar, Mullaitivu and Kilinochchi districts; and up to 10 – 25 mm in Ratnapura, Nuwara Eliya, Hambantota, Batticaloa and Jaffna districts.

 

Monthly Monitoring

During June – Above average rainfall conditions up to 6 mm were experienced by Vavuniya and Anuradhapura districts; up to 4 mm in Mannar, Kurunegala, Polonnaruwa, Trincomalee, Kegalle, Kandy, Badulla, Ampara, Batticaloa, Monaragala and Hambantota districts and below average rainfall conditions up to 2 mm were experienced by Galle, Matara and Ratnapura districts.

 

 Predictions


Rainfall


14-day prediction: 

NOAA NCEP models: 

From16th June – 22nd July: Total rainfall up to 85 mm in Galle and Matara districts; up to 75 mm in Hambantota and Ratnapura districts; up to 65 mm in Badulla and Monaragala districts; up to 55 mm in Ampara, Nuwara Eliya, Kegalle and Colombo districts; up to 45 mm in Kandy and Gampaha districts; up to 35 mm in Kurunegala and Matale districts; and up to 25 mm in Puttalam, Anuradhapura, Polonnaruwa, Batticaloa, Trincomalee and Vavuniya districts.


From 23rd – 29th July: Total rainfall up to 55 mm in Galle and Ratnapura districts; up to 45 mm in Gampaha, Matara and Hambantota districts; up to 35 mm in Monaragala, Badulla, Nuwara Eliya, Kegalle, Kandy and Matale districts; and up to 25 mm in Kurunegala, Puttalam, Ampara, Anuradhapura, Polonnaruwa and Batticaloa districts.


IRI Model Forecast: 

From 16th – 21st July: Total rainfall up to 100 mm in Colombo, Kalutara and Galle districts; up to 75 mm in Gampaha, Kegalle, Ratnapura, Nuwara Eliya, Badulla and Matara districts, up to 50 mm in rest of the island while up to 25 mm in Mannar district. 

MJO based OLR predictions:

For the next 15 days: 

MJO shall enhance the rainfall during the next 10 days and shall slightly enhance the rainfall during the following 5 days. 

Ocean State (Text Courtesy IRI)

Pacific sea state: June 19, 2020 

SSTs in the east-central Pacific are in the cool-neutral range in early July, and the atmospheric variables were either ENSO-neutral or indicative of weak La Niña conditions. The average of the forecasts of many models for fall and winter slightly exceed the borderline of weak La Niña SST conditions. The official CPC/IRI outlook is similar to these model forecasts, calling for a likely continuation of ENSO-neutral in summer, with a 55% chance of La Niña for fall and 50% chance for continuing through winter. A La Niña watch is now posted.

Indian Ocean State

1.5 0C above average sea surface temperature was observed in the seas around Sri Lanka.

Friday, July 10, 2020

Climate Bulletin For Sri Lanka (10 July 2020)

 



                        Highlights                             

    The NOAA weekly rainfall forecast predicts up to 75 mm in Badulla and Nuwara Eliya districts during 8th - 13th June. 
    Between 30th June - 6th  July: up to 30 mm of rainfall was recoreded in Kalutara district on 6th July.
    From 2nd- 9th June: up to 15 km/h, southwesterly winds were experienced by the entire island.
    0C above average sea surface temperature was observed in the seas around Sri Lanka.





Monitoring

Rainfall

Weekly Monitoring:

Date

Rainfall

30th June

Up to 15 mm in Galle, Matara and Hambantota districts; up to 10 mm in Kalutara, Ratnapura, Monaragala, Batticaloa, Polonnaruwa and Trincomalee districts; and up to 5 mm in Colombo, Ampara, Matale, Anuradhapura and Kilinochchi districts.

1st July

Up to 10 mm in Hambantota district.

2nd July

Up to 15 mm in Vavuniya, Mannar, Anuradhapura, Mullaitivu and Trincomalee districts; up to 10 mm in Puttalam, Kilinochchi, Jaffna, Polonnaruwa, Kalutara,  Ratnapura, Galle, Matara and Batticaloa districts; and up to 5 mm in Kurunegala, Kandy, Nuwara Eliya, Badulla, Matale, Colombo, Kegalle, Gampaha and  Hambantota districts.

3rd July

Up to 20 mm in Kalutara, Galle, Ampara, and Batticaloa districts; up to 15 mm in Puttalam, Kurunegala, Anuradhapura, Vavuniya, Trincomalee, Polonnaruwa, Kandy, Kegalle, Gampaha, Colombo, Ratnapura, Monaragala, Badulla, Matale, Mannar and Matara districts; and up to 10 mm in Kilinochchi, Mullaitivu, Jaffna, Nuwara Eliya and Hambantota districts.

4th July

Up to 20 mm in Trincoalee, Anuradhapura, Vavuniya and Puttalam districts; up to 15 mm in Kurunegala, Polonnaruwa, Batticaloa and Mullaitivu districts; up to 10 mm in Mannar, Kilinochchi, Jaffna, Gampaha, Matale, Ampara, Monaragala, Kandy, Nuwara Eliya, Badulla and Kegalle districts; and up to 5 mm in Colombo, Kalutara and Ratnapura districts.

5th July

Up to 5 mm in Vavuniya district.

6th July

Up to 30 mm in Kalutara district; up to 10 mm in Colombo, Ratnapura, Galle, Matara, Hambantota, Monaragala and Ampara districts; and up to 5 mm in Mullaitivu, Trincomalee, Vavuniya, Anuradhapura, Batticaloa, Badulla and Nuwara Eliya disticts.


Total Rainfall for the Past Week: 

The RFE 2.0 tool shows total up to 10 – 25 mm in Colombo, Kalutara, Mullaitivu and Vavuniya districts; and up to 5 – 10 mm in Galle, Matara, Hambantota, Ampara, Monaragala, Anuradhapura, Trincomalee and Gampaha districts.


Below rainfall average up to 25-50 mm in Gampaha, Colombo, Kalutara, Galle, Kegalle, Ratnapura and Kandy districts; and up to 10 – 25 mm in Puttalam, Kurunegala, Matale, Kandy, Ampara, Batticaloa, Badulla, Monaragala and Hambantota districts.

Monthly Monitoring

During June – Above average rainfall conditions up to 6 mm were experienced by Vavuniya and Anuradhapura districts; up to 4 mm in Mannar, Kurunegala, Polonnaruwa, Trincomalee, Kegalle, Kandy, Badulla, Ampara, Batticaloa, Monaragala and Hambantota districts and below average rainfall conditions upto 2 mm were experienced by Galle, Matara and Ratnapura districts.


 Predictions


Rainfall


14-day prediction: 

NOAA NCEP models: 

From 8nd July – 15th July: Total rainfall up to 35 mm in Colombo, Kegalle and Ratnapura districts; up to 25 mm in Gampaha, Puttalam, Matale, Kurunegala, Kandy, Nuwara Eliya, Badulla, Ampara and Polonnaruwa districts; and up to 15 mm in Anuradhapura, Monaragala, Batticaloa, Matara and Trincomalee districts.

From 16th July – 22nd July: Total rainfall up to 55 mm in Matara, Ratnpura, Hambantota, Nuwara Eliya, Kegalle and Colombo districts; up to 45 mm in Gampaha, Hambantota, Badulla, Kandy, Monaragala and Ampara districts; up to 35 mm in Kandy, Matale, Kurunegala, Batticaloa, Polonnaruwa and Puttalam districts; and up to 25 mm in Vavuniya, Mullaitivu, Trincomalee, Anuradhapura and Jaffna districts. 

IRI Model Forecast: 

From 8th July – 13th July: Total rainfall up to 75 mm in Badulla and Nuwara Eliya districts; up to 50 mm in Galle, Colombo, Kalutara, Gampaha, Puttalam, Kurunegala, Kegalle, Ratnapura, Kandy, Matale, Monaragala, Ampara, Batticaloa, Trincomalee, Polonnaruwa, Anuradhapura, Vavuniya, Mullaitivu, Kilinochchi and Jaffna districts.

MJO based OLR predictions:

For the next 15 days: 
MJO shall significantly enhance rainfall during 9th - 18th July and shall slightly enhance rainfall during 19th - 23rd July.

Ocean State (Text Courtesy IRI)

Pacific sea state: June 24, 2020 

SSTs in the east-central Pacific decreased to near the La Niña threshold in early June, and the atmospheric variables were either ENSO-neutral or indicative of weak La Niña conditions. The average of the forecasts of many models just short of the borderline of weak La Niña SST conditions through fall, becoming slightly weaker beginning in early winter. The official CPC/IRI outlook is somewhat similar to these model forecasts, calling for a likely continuation of ENSO-neutral in summer, with approximately equal chances of ENSO-neutral or La Niña for fall and winter. 


Indian Ocean State
0C above average sea surface temperature was observed in the seas around Sri Lanka.