Seasonal Monitoring




The 4 Panels below shows the variation by dekadal (3 times a month) and the map shows anomalies for the Maha Season 2019 starting from the month of September.

  • Figure 1: Maha Season 2019 anomalies for each month.
  • Figure 2:Cumulative rainfall during Maha Season 2019 compared to the average of the past 16 years.
  • Figure 3 : Rainfall deficits or excess by dekadal.
  • Figure 4 : 3 Per month (dekadal) Rainfall during Maha Season (3 months) in 2019.

Average-Rainfall-Compared Figure 1- Maha Season 2019 anomalies for each month
.

Cumulative-Rainfall


Figure 2- Cumulative rainfall during Maha Season 2019 compared to the average of the past 16 years.


Average-Rainfall-Compared


Figure 3- Dekadal (10-Day) rainfall during Maha Season 2018-2019 compared to the past average. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies.

Dekadal-Rainfall-Yala-2016


Figure 4- Dekadal (3 per month) rainfall during Maha Season in 2019.


   

Comparison of the current rainfall during the past 6 years in Sri Lanka.


The 3 Panels below shows the variation by dekadal (3 times a month) and the map shows anomalies for the first half of the Yala Season 2018 starting from the month of April.

  • Top Left: Yala first half the season 2018 anomalies for each month.
  • Top Right: Cumulative rainfall during the first half of the Yala season 2018 (3 months) compared to previous years.
  • Bottom left: Rainfall deficits or excess by dekadal.
  • Bottom right: 3 Per month (dekadal) Rainfall during first half of the Yala season (3 months) in 2018.

Average-Rainfall-Compared
Yala season first half 2019 anomalies for each month
.

Cumulative-Rainfall


Cumulative rainfall during first half of Yala season 2019 compared to the average of the past 15 years.

Average-Rainfall-Compared


Dekadal (10-Day) rainfall during first half of the Yala season 2018 compared to the past average. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies.

Dekadal-Rainfall-Yala-2016


Dekadal (3 per month) rainfall during first half of the Yala season in 2018.

   

Comparison of the current rainfall during the past 6 years in Sri Lanka.

Rainfall-Yala-6Years

Comparison of current rainfall during the past 6 Years.


The 3 Panels below shows the variation by dekadal (3 times a month) and the map shows anomalies for the first half of the Maha Season 2019/20 starting from the month of October.

  • Top Left: Maha first half the season 2017/18 anomalies for each month.
  • Top Right: Cumulative rainfall during the Second half of the Maha season 2019 (3 months) compared to previous years.
  • Bottom left: Rainfall deficits or excess by dekadal.
  • Bottom right: 3 Per month (dekadal) Rainfall during Second half of the Maha season (3 months) in 2020.

Maha season Second half 2018 anomalies for each month
.

Cumulative-Rainfall


Cumulative rainfall during Second half of Maha season 2020 compared to the average of the past 15 years.

Average-Rainfall-Compared


Dekadal (10-Day) rainfall during second half of the Maha season 2020 compared to the past average. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies.

Dekadal-Rainfall-Yala-2016


Dekadal (3 per month) rainfall during second half of the Maha season in 2019.

   

Comparison of the current rainfall during the past 6 years in Sri Lanka.

Comparison of current rainfall during the past 6 Years.


The 3 Panels below shows the variation by dekadal (3 times a month) and the map shows anomalies for the first half of the Maha Season 2019/20 starting from the month of October.

  • Top Left: Maha first half the season 2017/18 anomalies for each month.
  • Top Right: Cumulative rainfall during the first half of the Maha season 2019/20 (3 months) compared to previous years.
  • Bottom left: Rainfall deficits or excess by dekadal.
  • Bottom right: 3 Per month (dekadal) Rainfall during first half of the Maha season (3 months) in 2019/20.

Average-Rainfall-Compared
Maha season first half 2017/18 anomalies for each month
.

Cumulative-Rainfall


Cumulative rainfall during first half of Maha season 2019/20 compared to the average of the past 15 years.

Average-Rainfall-Compared


Dekadal (10-Day) rainfall during first half of the Maha season 2019/20 compared to the past average. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies.

Dekadal-Rainfall-Yala-2016


Dekadal (3 per month) rainfall during second half of the Yala season in 2019.

 

Comparison of the current rainfall during the past 3 years in Sri Lanka.

Rainfall-Yala-6Years
Comparison of current rainfall during the past 3 Years.


The 3 Panels below shows the variation by dekadal (3 times a month) and the map shows anomalies for the second half of the Yala Season 2019 starting from the month of June.

  • Top Left: Yala season 2019 anomalies for each month.
  • Top Right: Cumulative rainfall during the second half of the Yala season 2019 (3 months) compared to previous years.
  • Bottom left: Rainfall deficits or excess by dekadal.
  • Bottom right: 3 Per month (dekadal) Rainfall during second half of the Yala season (3 months) in 2019.

Average-Rainfall-Compared






Cumulative rainfall during second half of Yala season 2019 compared to the average of the past 15 years.

Cumulative-RainfallYala season 2019 anomalies for each month
.

Average-Rainfall-Compared


Dekadal (10-Day) rainfall during second half of the Yala season 2019 compared to the past average. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies.

Dekadal-Rainfall-Yala-2016


Dekadal (3 per month) rainfall during second half of the Yala season in 2019.


The 3 Panels below shows the variation by dekadal (3 times a month) and the map shows anomalies for the first half of the Yala Season 2019 starting from the month of April.

  • Top Left: Yala season 2019 anomalies for each month.
  • Top Right: Cumulative rainfall during the first half of the Yala season 2019 (3 months) compared to previous years.
  • Bottom left: Rainfall deficits or excess by dekadal.
  • Bottom right: 3 Per month (dekadal) Rainfall during first half of the Yala season (3 months) in 2019.

Average-Rainfall-Compared
Yala season 2019 anomalies for each month
.

Cumulative-Rainfall


Cumulative rainfall during first half of Yala season 2019 compared to the average of the past 15 years.

Average-Rainfall-Compared


Dekadal (10-Day) rainfall during first half of the Yala season 2019 compared to the past average. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies.

Dekadal-Rainfall-Yala-2016


Dekadal (3 per month) rainfall during first half of the Yala season in 2019.


The 3 Panels below shows the variation by dekadal (3 times a month) and the map shows anomalies for the second half of the Maha Season 2018/2019 starting from the month of October.

  • Top Left: Maha season 2018/2019 anomalies for each month.
  • Top Right: Cumulative rainfall during the second half of the Maha season 2018/2019 (3 months) compared to previous years.
  • Bottom left: Rainfall deficits or excess by dekadal.
  • Bottom right: 3 Per month (dekadal) Rainfall during second half of the Maha season (3 months) in 2018/2019.

Average-Rainfall-Compared
Maha season 2018/2019 anomalies for each month

Cumulative-Rainfall


Cumulative rainfall during second half of Maha season 2018/2019 compared to the average of the past 15 years.

Average-Rainfall-Compared


Dekadal (10-Day) rainfall during second half of the Maha season 2018/2019 compared to the past average. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies.

Dekadal-Rainfall-Yala-2016


Dekadal (3 per month) rainfall during Second half of the Maha season in 2018/2019.

Comparison of the current rainfall during the past 6 years in Sri Lanka.

Rainfall-Yala-6YearsComparison of current rainfall during the past 6 Years.


The 3 Panels below show the variation by dekadal (3 times a month) for the first half of the Yala Season 2019(3 months) in Sri Lanka starting from the month of April.

  • Top Left: Cumulative rainfall during the first half of the Yala season 2019 (3 months) compared to previous years.
  • Top Right: Rainfall deficits or excess by dekadal.
  • Bottom: 3 Per month (dekadal) Rainfall during first half of the Yala season (3 months) in 2019.

Cumulative-RainfallCumulative rainfall during the first half of Yala season 2019 (3 months) compared to the average of the past 15 years.

Average-Rainfall-ComparedDekadal (10-Day) rainfall during first half of the Yala season 2019 compared to the past average. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies.

Dekadal-Rainfall-Yala-2016Dekadal (3 per month) rainfall during first half of the Yala season (3 months) in 2019.


The 3 Panels below show the variation by dekadal (3 times a month) for the second half of the Yala Season 2019(3 months) in Srilanka starting from the month of July.

  • Top Left: Cumulative rainfall during the second half of the yala season 2019 (3 months) compared to previous years.
  • Top Right: Rainfall deficits or excess by dekadal.
  • Bottom: 3 Per month (dekadal) Rainfall during the second half of the yala season (3 months) in 2019.

Cumulative-RainfallCumulative rainfall during the second half of yala season 2019 (3 months) compared to the average of the past 15 years.

Average-Rainfall-ComparedDekadal (10-Day) rainfall during second half of the Yala season 2019 compared to the past average. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies.

Dekadal-Rainfall-Yala-2016Dekadal (3 per month) rainfall during second half of the Yala season (3 months) in 2019.


The 3 Panels below show the variation by dekadal (3 times a month) for the first half of the Maha Season 2019(3 months) in Sri Lanka starting from the month of October.

  • Top Left: Cumulative rainfall during the first half of the Maha season 2019 (3 months) compared to previous years.
  • Top Right: Rainfall deficits or excess by dekadal.
  • Bottom: 3 Per month (dekadal) Rainfall during first half of the Maha season (3 months) in 2019.

Cumulative-RainfallCumulative rainfall during first half of Maha season 2019 (3 months) compared to the average of the past 15 years

Average-Rainfall-ComparedDekadal (10-Day) rainfall during first half of the Maha season 2019 compared to the past average. The blue bars show above-average rainfall anomalies and brown bars shows below average rainfall anomalies.

Dekadal-Rainfall-Yala-2016Dekadal (3 per month) rainfall during first half of the maha season (3 months) in 2019