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This is the tropical storm #42 of the green season, and also because of the proximity of the Intertropical Convergence Zone to the country,
which could cause more flooding.


Published Thursday, October 1, 2020


Yellow Alert due to new Tropical Wave

By the A.M. Costa Rica staff

The National Emergency Commission declares Yellow Alert on the Pacific Coast (Guanacaste and Puntarenas provinces), Northern Zone (Alajuela and Heredia provinces) , Central Valley (San José and Cartago Provinces), and Southern Zone ( southern area of Puntarenas Province)  and due to the passage of the new Tropical Wave.

This is the tropical storm #42 of the green season, and also because of the proximity of the Intertropical Convergence Zone to the country, which could cause more flooding, drivers should increase precautionary measures such as not speeding, keeping the lights on, or avoiding risky roads.

The Intertropical Convergence Zone, known by sailors as the doldrums or the calms due to the dull windless weather, is the area where the northeast and southeast trade winds converge. The zone appears as a band of clouds, usually, thunderstorms, that circles the globe near the Equator.

Also, the Commission officials advise the population living near rivers or unstable slopes to be aware and report to the emergency line 911 line any incident as floods, landslides or falling trees.

According to the Meteorological Institute, Tropical Wave #42 was on Wednesday located in the center of the Caribbean Sea and moving over the country until reaching towards the Pacific Ocean.

This wave is also crossing over the Intertropical Convergence Zone which is located near the country. Both have caused an increase in the intensity of rains, thunderstorms, and strong gusts.

According to weather specialists, downpours, of amounts of rain between 20-60 mm, and thunderstorms were recorded on Wednesday mainly in the Pacific Coast, San José Province, the Northern Zone.

During the night, the rains increased mainly on the Caribbean Coast.

Specialists call on people who live in the western area of San José Province, the mountainous areas in the northern zone and the Pacific Coast to increase precautionary measures due to the risk of landslides.

On Tuesday, several emergencies were reported due to the floods, mainly in the Province of San José.

According to the National Highway Council, Cosevi, most massive floods occurred on Tuesday along the General Cañas Highway, between San José and Alajuela provinces.

According to officials, the clogging of the sewers caused the waters of the Quebrada Seca River, to overflow and cause a flood along the highway.

After the flood receded, Conavi workers closed the road to carry out cleanup work in the area, collecting large amounts of garbage and tree trash.

According to the Firefighters report, at least 20 emergency calls were attended, mostly on drivers who were trapped in the middle of the road due to the flooding. Of these, at least seven vehicles and motorcycles were damaged by the materials that were carried by the flood.

Specialists from the National Emergency Commission recommend that to avoid accidents, damage to structures and emergencies during the green season where there is a strong increase in rainfall throughout the country, make sure to practice the following:

• Keep the roof of your house clean.

• Clear a path in the backyard allowing rainwater to move without problems towards the drainage, which helps to avoid damages and leaks in the house.

• Pick up the garbage so that it does not fall on the pipes or drains on the sidewalks.

• Avoid that solvents, oils, acids or corrosive liquids that can fall into the sewer pipes and deteriorate them.
• Keep clean public areas such as river banks in your community to avoid flooding.

• Report the lack of concrete caps or grids in the pipes to the Aqueduct Institute by calling 2547-6555.

Authorities call on the public to take the following precautionary measures:

• Stay informed about the alerts issued by the authorities.

• People living in mountain areas should increase precautionary measures against a possible landslide or material falling from the high areas of the hills.

• Have an emergency evacuation plan in the community, work and home.

• Drivers must increase precautions for heavy rain and fog.

• Take precautionary measures in case of electrical storms.

• Be alert in vulnerable areas to flooding due to sewer saturation or increase of river flow.

• In case of a thunderstorm, take refuge in a safe place.

• In case of strong wind gusts, be alert to possible falling tree branches or electrical cables.

• In the event of a landslide, do not walk on the debris, stay away from affected areas, and do not return home until authorities verify that it is a safe place.

Authorities ask for the people in Costa Rica to call 911 to report any possible flooding, fallen trees or landslides.

A.M. Costa Rica urges readers to share this alert with their contacts.

What emergencies have you heard of due to the thunderstorms in your community?
We would like to know your thoughts on this story. Send your comments to


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