The atmosphere over Costa Rican territory will remain highly unstable this Sunday, September 13, driven by the ongoing influence of Tropical Wave #43.

In addition to the wave’s activity, a strong surge of trade winds across the Caribbean Sea basin continues to push a steady stream of oceanic moisture directly into the country.

🌧️ Regional Weather Impact Breakdown

Caribbean Region & Northern Zone:

The constant entry of moisture from the ocean will fuel storm formation off the coast of Limón. Continuous rainfall and scattered thunderstorms are expected throughout the entire day across these regions.

Pacific Slope:

The Intertropical Convergence Zone (ITCZ) remains active over the sector, bringing intense afternoon downpours accompanied by frequent lightning and strong gusts.

Central Valley:

Scattered precipitation is forecast, with localized storms that could turn severe and heavy during the afternoon hours.

⚠️ Emergency Advisory & Public Safety Recommendations

Emergency management authorities recommend exercising extreme caution across vulnerable areas due to:

1. Saturated Drainage Systems: High risk of localized urban flooding in urban roads and residential areas.
2. Rising River Levels: Potential flash flooding and rapid cresting of rivers and streams.
3. Landslides & Debris Flows: Increased soil saturation on hillsides and mountainous corridors raises the risk of slope instability.

Residents and drivers traveling through mountain routes are advised to stay updated with official warnings from the National Meteorological Institute (IMN) and the National Emergency Commission (CNE).

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