Weather Warning

Tropical wave #40 will favor atmospheric instability for this Monday

September 24, 2023

11.00 a.m.

Weather Warning
Tropical wave #40 will favor atmospheric instability for this Monday
September 24, 2023
11:00 a.m.

Diagnosis: Costa Rica shows a stable atmospheric pattern and variable cloudiness. For the Central Pacific and South Pacific, cloudy skies are observed, the rest of the country shows partially cloudy conditions. Currently tropical wave #40 is located approximately 78°W (border between Panama and Colombia), this system shows a high humidity content and atmospheric instability.

Forecast: Throughout the afternoon, partly cloudy skies are expected for the Caribbean, North Zone and North Pacific. During the afternoon, possible isolated rains are expected in mountainous sectors with estimated amounts between 10 - 25 mm and possible localized maximums.

For the Central and South Pacific, scattered rains with localized downpours are expected, especially in mountainous sectors and near the border with Panama. These precipitations could continue until early evening. Estimated quantities in 6 hours will range between 10 - 35 mm with maximum possible quantities between 40 - 80 mm.

During the afternoon, the Central Valley presents a probability of isolated short-duration showers to the west of the region. Estimated rainfall in 6-hour periods will be between 10 – 30 mm with possible maximums in mountainous sectors.

Tropical wave #40 will strengthen the humidity content and atmospheric instability for the afternoon of Monday, September 25. The Intertropical Convergence Zone is expected to strengthen on Tuesday due to the instability pattern generated by tropical wave #40.

Warning: Caution is recommended on unstable slopes, sectors with high vulnerability to landslides due to rainfall of varying intensity in the South Pacific due to the high saturation of soils in mountainous sectors.
Therefore, the IMN recommends:
• Caution due to wastewater saturation in places prone to this type of flooding.
• Prevention against thunderstorms and seeking shelter in a safe place in case strong gusts of wind occur or are perceived near storm clouds, due to the possible fall of tree branches, power lines, among others. These gusts can reach between 80 and 100 kilometers per hour in some isolated cases.
• Stay informed through social networks, Twitter: @IMNCR, Facebook: National Meteorological Institute CR and the WEB Page: www.imn.ac.cr

Paulo Solano
Meteorologist
DMSA-IMN

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Weather Warning

Heavy rainy activity and thunderstorm today

May 16, 2020

11.00 am

Diagnosis: The high humidity content on the country and surroundings continues this Saturday, favored by the proximity of the Intertropical Convergence Zone. In addition, very warm temperatures are recorded this morning, which are close to 32 ° C in the GAM and higher in coastal areas and plains. The combination of these factors favors the development of cloudiness, promoting strong rainy and electrical activity during the afternoon and early evening.

Forecast: During the afternoon and in the first hours of the night, showers of variable intensity and heavy showers with thunderstorms are anticipated in the Pacific regions, especially in the Central Pacific and North Pacific, with accumulated between 25-75 mm of 3- 6 hours.

For the Central Valley and the North Zone, rains and showers with an electrical storm are expected, amounts between 25-65 mm in periods of 3-6 hours, possible higher amounts locally in these regions. On the other hand, in the mountainous sectors of the Caribbean rain and showers are estimated, amounts between 10-35 mm of 3-6 hours; possible downpours in the mountains, on the coast of Limón low probability of rain is estimated in the aforementioned periods.

Due to the above, the IMN recommends:

• Caution in areas vulnerable to flooding due to sewerage saturation, increased flow in rivers and streams, as well as sectors prone to landslides.
• Prevention on national routes such as: route 1, route 10, route 27, route 21, route 32, route 34, route 141 and route 126.
• Take refuge in a safe place in case of hearing an electrical storm or perceiving strong gusts of wind near storm clouds, as well as precaution for possible falling tree branches, power lines, among others.
• Stay informed via Twitter: @IMNCR, Facebook: CR National Meteorological Institute and the WEB Page: www.imn.ac.cr

Gabriela Chinchilla
Meteorologist
DMSA-IMN

 

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