Agro-Meteorological Bulletin for the First 15-Day Period (1st-15th) of June, 2023



ISSUED AT: 10:19 AM

Date: Thursday 1st of June 2023

Figure 1.

Figure 2.

Summary:

Moderate to high rainfall amounts are expected during the fifteen days.

Wet days with rainfall amounts ranging between 10-45 mm are expected during the 2nd, 7th, 9th, 12th and 13th while relatively wet days with rainfall amounts less than 8.0 mm are expected during the 1st, 3rd, 4th-6th, 8th, 10th-11th and 14th-15th of June 2023.

Trinidad and Tobago:

Wet days with rainfall amounts ranging between 10-45mm are expected during the 2nd, 7th, 9th, 12th and 13th while relatively wet days with rainfall amounts less than 8.0 mm are expected during the 1st, 3rd, 4th-6th, 8th, 10th-11th and 14th-15th of June 2023. The daily rainfall totals are forecast to range between 0.0 mm to 45.0 mm across different farmlands across the islands, especially along the eastern coastal areas of Trinidad, and Tobago with fifteen-day rainfall totals ranging between 60.0 mm and 100.0 mm in Trinidad, and 100 mm in Tobago.

Temperatures & Winds:

The maximum temperatures are expected to remain warm, with daily temperatures ranging between 31.0oC to 33.0oC throughout the period. However, temperatures are expected to have a real-feel or feels-like between 31.0oC to 38.0oC on most days. The minimum temperatures will range between 24.5oC to 25.5oC during most nights/early mornings, dropping lower in rural areas and valleys.

In general, mostly easterly winds of an average speed of 20 km/h are expected, however, gusts can range between 30-50 km/h. Moderate to high rainfall totals, mostly low to moderate speeds, warm days, and warmer feels-like temperatures will sustain average evapotranspiration rates in crops ranging between 2.0 to 10.0 mm per day.

Moisture levels:

Over the fifteen-day period across Trinidad and Tobago, moisture levels are expected to be moderate to high, with average daytime relative humidity values in the mid-50s to mid-90s, in terms of percentage.


Agro-Meteorological Bulletin for the First 15-Day Period (1st-15th) of June, 2023



ISSUED AT: 10:19 AM

Date: Thursday 1st of June 2023


Definitions used in the forecast and bulletin:

Term Meaning
Dekad 10 day rainfall measuring period
Rain Day A day with 1.0 mm or more of rainfall amount
Wet Day A day with 10.0 mm or more rainfall amount
Extremely Wet Day A day with 25.0 mm or more of rainfall amount
Normal Rainfall Between 75% and 125% of the average
Below Normal Rainfall Rainfall below 75% of the average
Above Normal Rainfall Rainfall in excess of 125% of the average
Much Below Normal Rainfall Rainfall below 50% of the average
Much Above Normal Rainfall Rainfall above 150% of the average
Scanty Rainfall Less than 1 mm
Moderate Rainfall 1-10 mm
Heavy Rainfall 10-50 mm
Very Heavy Rainfall Greater than 50 mm
Probability of 1-30 % Low Chance
Probability of 30-70 % Moderate Chance
Probability greater than 70 % High Chance
Term Amount of Rain Type of day
Scanty Rainfall Less than 1 mm Relatively dry day
Moderate Rainfall 1-10 mm Relatively wet day
Heavy Rainfall 10-50 mm Wet day
Very Heavy Rainfall Greater than 50 mm Excessively wet day

Weather Bulletin for Farmers and Livestock Producers of Trinidad and Tobago for the 15-day period (1st-15th) of June 2023.

Date

Weather

Temperature

Heat

Real

Feel

Day Moisture

(Relative) (Humidity)

Wind

1st               

60% chance of showers

 

1.0 to 8.0 mm of   rainfall is possible

Partly cloudy with showers

Warm 

       Max/Min  Temperatures  oC    31.0/24.5

 

 

Feels like

31-35oC

 

 

58-73%

Weak south-easterly

10 km/h

Gust

 20 km/h

2nd       

75% chance of showers

 

10.0 to 25.0 mm of   rainfall is possible

Partly cloudy to cloudy with light/mod showers and T-showers

Warm         Max/Min  Temperatures  oC    28.0/25.0

 

 

Feels like

28-32oC

 

 

84-94%

Moderate easterly

15 km/h

Gust

 30 km/h

3rd              

60% chance of showers

 

1.0 to 8.0 mm of   rainfall is possible

Partly cloudy with showers

Warm       Max/Min  Temperatures  oC    31.0/25.0

 

 

Feels like

31-36oC

 

 

62-73%

Weak south-easterly

10 km/h

Gust

 20 km/h

4th

60% chance of showers

 

1.0 to 5.0 mm of   rainfall is possible

Partly cloudy with showers

Warm      Max/Min  Temperatures  oC    30.0/25.0

 

 

Feels like

31-36oC

 

 

56-71%

Weak south-easterly

10 km/h

Gust

 20 km/h

5th

60% chance of showers

 

1.0 to 5.0 mm of   rainfall is possible

Partly cloudy with showers

Warm      Max/Min  Temperatures  oC    31.0/25.5

 

 

Feels like

31-36oC

 

 

57-68%

Weak south-easterly

10 km/h

Gust

 20 km/h

 

 

6th

60% chance of showers

 

1.0 to 8.0 mm of   rainfall is possible

Partly cloudy with showers

Warm      Max/Min  Temperatures  oC    32.0/25.0

 

 

Feels like

32-36oC

 

 

55-61%

Weak south-easterly

10 km/h

Gust

 20 km/h

7th 

75% chance of showers

 

15.0 to 45.0 mm of   rainfall is possible

Partly cloudy to cloudy with light/mod showers and T-showers

Warm       Max/Min  Temperatures  oC    28.0/26.0

 

 

Feels like

28-32oC

 

 

84-94%

Weak easterly

10 km/h

Gust

 20 km/h

8th

45% chance of showers

 

1.0 to 4.0 mm of   rainfall is possible

Partly cloudy with light/mod showers

Warm       Max/Min  Temperatures  oC    31.5/25.0

 

 

Feels like

32-35oC

 

 

55-63%

Weak northeasterly

10 km/h

Gust

 20 km/h

9th 

75% chance of showers

 

15.0 to 45.0 mm of   rainfall is possible

Partly cloudy to cloudy with light/mod showers and T-showers

Warm      Max/Min  Temperatures  oC    28.0/25.0

 

 

Feels like

28-32oC

 

 

92-95%

Weak northeasterly

10 km/h

Gust

 20 km/h

10th 

45% chance of showers

 

1.0 to 5.0 mm of   rainfall is possible

Partly cloudy  with light/mod showers

Warm       Max/Min  Temperatures  oC    31.5/25.0

 

 

Feels like

31-35oC

 

 

69-78%

Weak south-easterly

10 km/h

Gust

 20 km/h

11th            

45% chance of showers

 

Less than 5.0 mm of   rainfall is possible

Partly cloudy with showers

Warm      Max/Min  Temperatures  oC    31.0/25.5

 

 

Feels like

31-35oC

 

 

65-74%

Weak south-easterly

10 km/h

Gust

 20 km/h

12th    

 

               

65% chance of showers

 

10.0 mm than 20.0 mm of   rainfall is possible

Partly cloudy with showers

Warm      Max/Min  Temperatures  oC    32.0/25.0

 

 

Feels like

32-38oC

 

 

61-73%

Moderate easterly

10 km/h

Gust

 20 km/h

13th   

           

65% chance of showers

 

10.0 mm than 20.0 mm of   rainfall is possible

Partly cloudy with showers

Warm      Max/Min  Temperatures  oC    32.0/25.5

 

 

Feels like

30-36oC

 

 

64-82%

Weak south-easterly

10 km/h

Gust

 20 km/h

14th       

65% chance of showers

 

1.0 to 5.0 mm of   rainfall is possible

Partly cloudy with showers

Warm      Max/Min  Temperatures  oC    33.0/25.0

 

 

Feels like

33-38oC

 

 

63-73%

Weak south-easterly

10 km/h

Gust

 20 km/h

15th      

65% chance of showers

 

1.0 to 5.0 mm of   rainfall is possible

Partly cloudy with showers

Warm      Max/Min  Temperatures  oC    34.0/25.0

 

 

Feels like

32-38oC

 

 

57-67%

Weak south-easterly

10 km/h

Gust

 20 km/h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Trinidad Rainfall Forecast for the 15-Day period of June (1st –15th) 2023.

Figure 1.  Rainfall map of Trinidad showing expected mean rainfall totals for districts across Trinidad during the 15-day period (1st-15th) June 2023 and percentage probability of occurrence.

Eastern, and North-Eastern areas 

Moderate chance (65%) of mean daily rainfall up to 7.2 mm.

South-Eastern areas

Moderate chance (68%) of mean daily rainfall up to 9.5 mm.

Southern areas

Moderate chance (65%) of mean daily rainfall up to 7.7 mm.

South-Western areas 

Moderate chance (65%) of mean daily rainfall up to 7.3 mm.

Central, West-Central, and inland areas

Moderate chance (60%) of mean daily rainfall up to 6.0 mm.

Northern, North-Western areas     

Moderate chance (65%) of mean daily rainfall up to 7.2 mm.

Tobago Rainfall Forecast for the 15-Day period of June (1st –15th) 2023.

Figure 2.    Rainfall map of Tobago showing expected mean rainfall totals for districts across Tobago during the 15-day period (1st-15th) June 2023 and percentage probability of occurrence.

North-Eastern areas

Moderate chance (68%) of mean daily rainfall up to 10.0 mm.

South-Western areas

Moderate chance (68%) of mean daily rainfall up to 10.0 mm.

 

Sun and Moon Positions in the Sky June (1st –15th) 2023.

The sun is presently at 22.0 degrees North latitude and with this position, the day-length or number of sunlight hours in Trinidad and Tobago from June 1st will be 12 hours and 42 minutes, increasing slightly to 12 hours and 45 minutes by 15th June 2023. According to the moon’s phases, the 1st-2nd and 9th-10th of June are good days for planting aboveground crops, while 5th-6th, 9th-10th (Third Quarter Phase) and 13th-14th of June are good days for planting below ground crops. However, 3rd (Full Moon Phase) -4th, 7th-8th, 11th-12th and 15th of June are poor planting days. These days should be used for removing weeds, clearing land and ploughing fields.

 

Highlighted Possible Impacts on Agriculture:

During this first 15-day (1st-15th) forecast period of June 2023, expect increasing cloudy conditions to occur as compared to the last 15-day forecast period of May. Frequent showery episodes will produce wetter conditions during the forecast period. Therefore, a reduction in the frequency of irrigation on fields to maintain optimal soil moisture would be necessary. Trinidad and Tobago is in its heat, hurricane and wet seasons, warm periods are expected and there is a moderate probability (64%) chance of heat stress in young livestock, newly germinated and transplanted seedlings onto fields. There is a high (70%) probability for strong winds during heavy showers and flash flooding episodes. River levels will be moderate to high at times during the forecast period. There is also a moderate probability (68%) chance for fungi spread, insect pests and warm/moist weather diseases to develop in crop beds and possible flower/fruit rot in wet canopies.

Weather Assessment for the period April (1st-15th) 2023.

Moderate to high amounts of rainfall occurred during the 21st-23rd, 26th and 29th-30th May resulting in wide-spread wetting of soils and some flooding over Trinidad and Tobago. The rainfall totals maps for the period, 16th to 31st of May for Trinidad and Tobago are located below as figure 1 and figure 2.

Figure 1. Rainfall map of Trinidad showing measured rainfall totals for varying districts during period 16th to 31st of May 2023.

 

 

Figure 2. Rainfall map of Tobago showing measured rainfall totals for varying districts during period 16th to 31st of May 2023.

Temperatures:

Temperatures were cool to warm during the period 16th to 31st of May, with the minimum nighttime temperature falling to 24.2 ⁰C and the maximum daytime temperature rising to 33.3 ⁰C, in Trinidad.

Similarly, Tobago temperatures were cool to warm during the period 16th to 31st of May, with the minimum nighttime temperature falling to 24.4 ⁰C and the maximum daytime temperature rising to 31.3 ⁰C.