Election Day 2020: Isolated Showers, Thunderstorms In The Forecast

Election Day 2020

The ITCZ, which affected T&T through the weekend, is forecast to drift and remain just south of Trinidad on Monday. Lingering moisture is forecast to fuel isolated showers and thunderstorms from the late morning through the afternoon, mainly across Southern and Western areas.

Activity with the ITCZ tends to peak between 12:00 AM and 6:00 AM to 8:00 AM and again 12:00 PM through 3:00 PM – 4:00 PM. Tropical Wave 33 is forecast to begin affecting Trinidad by the late night and both islands after midnight into Tuesday. There are no alerts, watches or warnings in effect from the TTMS at this time.

Across Tobago, mostly settled and sunny skies through the entire day into the night. The odd, brisk isolated shower is possible. Across Trinidad, much more variable weather is forecast.

AM – A mostly hot and sunny morning is anticipated. By the late morning (from 10:00 AM), partly cloudy skies may give way to a few isolated showers favoring southern and western halves of Trinidad. Isolated thunderstorms may develop closer to midday.

PM – Partly to mostly cloudy skies are forecast to be interrupted by isolated showers and isolated thunderstorms favoring southern, western, and hilly areas of Trinidad. Across the northern half of Trinidad and Tobago, hot and mostly sunny conditions are forecast. A mostly settled evening is forecast, barring the odd, isolated shower. Moisture ahead of Tropical Wave 33 may fuel isolated showers, favoring eastern areas of both islands by the late night. More scattered activity is anticipated into Tuesday, across both islands.

Temperatures are forecast to be warm, with maximum highs near 32°C across both islands, higher in urban areas and lower across Southern Trinidad due to anticipated cloud cover.

The main hazards include isolated heavy rainfall, favoring the southern and western halves of Trinidad, reducing visibility, and gusty winds up to and in excess of 55 KM/H. Street or flash flooding will be possible in slow-moving showers and thunderstorms. In thunderstorm activity, frequent lightning is also possible. Gusty winds may cause power dips/outages, downed trees, and localized wind damage.



Across Trinidad and Tobago, wind gusts up to and in excess of 55 KM/H are possible in heavier showers or thunderstorms.

With wind gusts in excess of 55 KM/H, whole trees are expected to be in motion, with tree damage likely. Outdoor objects may topple or become airborne such as garbage cans, potted plants, loose galvanize or construction material and other outdoor furniture. Tents may jump. Older/weaker trees may fall, bringing down utility poles and lines. Power outages expected, with damage to trees, power lines and small structures possible.

High Wind Event Precautions
High Wind Event Precautions


Overall rainfall accumulations are low on Monday, higher on Tuesday. Generally, less than 15 millimeters of rainfall forecast on Monday, with isolated totals in excess of 25 millimeters in areas of persisting heavy rainfall and thunderstorm activity possible.

Street flooding and flash flooding in heavy to violent showers and thunderstorms are possible, mainly across southern and western Trinidad.

Thunderstorms and Lightning

With thunderstorms, locally severe wind (in excess of 55 KM/H), violent rainfall rates (in excess of 50 millimeters per hour) and lightning are all possible.

Gusty winds and lightning pose a threat to our power grid, causing localized power outages. Lightning may also strike trees, homes, or utility poles, causing damage to property. Lightning can also be deadly to persons outside during a thunderstorm.

Seas and Surf

Seas forecast to be slight to moderate, with waves between 1.0 to 1.5 meters in open waters. In sheltered areas, near calm.

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