COSTA RICA · SAN CARLOS
Key Facts
- —The country Costa Rica is a Central American country popular with US travellers, and San Carlos is a northern canton centred on the town of Ciudad Quesada.
- —Why it matters Floodwater entered homes and shops in Aguas Zarcas and nearby towns, and route 250 toward Los Chiles was shut for about an hour.
- —Why now The storms struck on the afternoon of Thursday 15 October 2026, and more isolated but intense rain is forecast for the afternoon of Friday 16 October.
- —What happened Rescuers logged 45 incidents in the northern zone on Thursday evening, 32 of them in Aguas Zarcas, and evacuated four people at Los Lotes.
- —The numbers About 30 homes were hit at Los Lotes and about 20 shops near the Aserradero stream, while six ambulances and 16 Red Cross volunteers responded.
- —What it means for you Visitors driving in San Carlos should check road status and the weather forecast before afternoon trips, and avoid flooded crossings.
- —Still open No final damage total is public yet, and it is not clear whether the national emergency commission raised an alert for the zone.
- —Power Index Costa Rica ranks 9th of 14 in The Rio Times Latin America Power Index, with 36.5 points (October 2026 edition).
The Costa Rica San Carlos floods of Thursday 15 October 2026 put water into homes and shops in Aguas Zarcas. The Costa Rican Red Cross logged 45 incidents across the northern zone and evacuated four people.
Diario Extra counted about an hour and a half of heavy rain, and La Nación confirmed the 45 incidents. Both outlets traced the damage to streams that overflowed, and neither reports a death.
San Carlos is a large northern canton, or county, that includes the tourist district of La Fortuna. So far the damage looks local, though more storms are forecast.
Where the Costa Rica San Carlos Floods Struck
Aguas Zarcas took the heaviest hit, with 32 of the 45 incidents. In the town centre the overflowing Aserradero stream damaged about 20 nearby shops and businesses.
The largest single loss was at Los Lotes, in San José de Aguas Zarcas, where a river overflowed and affected 30 homes. Red Cross crews evacuated two minors and two adults, and at least 25 others left on their own.
Diario Extra’s first count that evening was lower, at about 15 homes in San José de Aguas Zarcas. The two counts come from different moments and different observers, so the final figure is still open.
La Palmera logged four incidents and Florencia five, with three homes affected in San Rafael de Florencia. A ford near the Platanar hydroelectric plant in Florencia suffered structural damage.
Viento Fresco listed eight affected homes, while sewers overflowed in Alto de Nazareth, Esquipulas and Garabito. None of those needed evacuations.
Just outside San Carlos, in the San Ramón canton, four homes in Chachagua flooded when a canal feeding a lagoon overflowed. The Red Cross was asked to evacuate two people there, but both declined once the water had dropped.
Route 250, between Los Chiles and Las Delicias de Aguas Zarcas, closed for about an hour after a stream overflowed. Diario Extra said the road was completely affected by the volume of water.
What the Weather Institute Says
The national weather institute, the Instituto Meteorológico Nacional (IMN), had warned of Thursday afternoon storms, mainly over the northern mountains. It forecast 15 to 30 millimetres of rain in one to three hours, with local peaks of 40 to 60 millimetres.
The IMN also rated soil saturation as moderate to high in basins of the western Central Valley and the Pacific. It advised extra care near streams and storm drains and warned of gusts up to 80 km/h in isolated storms.
For Friday 16 October the institute’s own forecast expects isolated but intense afternoon rain with thunderstorms, starting over the mountain ranges. In the Zona Norte and the Caribbean it says the rain will again concentrate near the mountains.
This was not the first such evening of the season. San Carlos Digital reported 60 incidents in nine districts after Sunday 16 August rain, with at least 200 homes flooded in Ulima.
La Nación covered another round of flooding in Aguas Zarcas and La Marina de La Palmera on Friday 25 September. Diario Extra wrote that the latest rain again exposed how vulnerable several northern communities are to sudden stream rises.
What It Means for You
For US travellers the effect is on roads and timing, since no account mentions damage to hotels, parks or tourist sites. Anyone driving in San Carlos on Friday afternoon should check road status before leaving and allow extra time.
Drivers should never cross a flooded ford or low bridge, because moving water can carry a vehicle away. Water also receded quickly in places, as the drop in Chachagua showed.
Companies with staff or suppliers in the zone face short disruptions, such as the hour-long closure of route 250. Those planning a stay can read our Living in Ciudad Quesada: A 2026 Guide for Expats in Costa Rica.
For context, see the Costa Rica Weather and Climate Guide 2026 and Costa Rica Landslide Traps 21 People in Grecia Market. More daily coverage sits in our Costa Rica news section.
What Is Not Known
No published account gives a final damage total, a cost estimate or the number of households that need aid. The national emergency commission, the CNE, had no alert for San Carlos that could be confirmed on Friday morning.
The two outlets differ on homes hit in San José de Aguas Zarcas, 15 or 30, and neither gives a canton total. Whether the four evacuated people have returned home is also unstated.
The IMN forecast is regional, so it cannot say whether Friday’s storms will fall over the same streams. The municipality of San Carlos may publish its own balance of damage in the coming days.
Frequently Asked Questions
What happened in San Carlos on 15 October 2026?
Heavy afternoon rain made several streams overflow, flooding homes and shops in Aguas Zarcas, La Palmera, Venecia and Florencia. The Red Cross logged 45 incidents in the northern zone and evacuated four people.
Were there deaths or injuries?
None of the published accounts mentions a death or a serious injury. The four evacuees, two minors and two adults, were taken out of Los Lotes by Red Cross crews.
Is it safe to visit La Fortuna after the flooding?
The accounts of the 15 October flooding do not mention La Fortuna or its tourist sites. Check road status and the IMN forecast before afternoon trips, since more storms are expected on Friday 16 October.
Which road was closed?
Route 250, between Los Chiles and Las Delicias de Aguas Zarcas, was closed for about an hour after a stream overflowed. Diario Extra described the road as completely affected by water.
Where can I find the official forecast?
The Instituto Meteorológico Nacional publishes daily forecasts and weather warnings at imn.ac.cr. Its Friday outlook calls for isolated but intense afternoon storms near the mountains.
Has San Carlos flooded like this before?
Yes, San Carlos Digital reported 60 incidents in nine districts after rain on Sunday 16 August. La Nación reported more flooding in Aguas Zarcas on Friday 25 September.
Sources: Diario Extra, Fuertes lluvias provocan inundaciones en San Carlos, 15 October 2026; La Nación, Fuertes lluvias de este jueves dejan 45 incidentes y cuatro personas evacuadas en la zona norte, 16 October 2026; Instituto Meteorológico Nacional (IMN), forecast for Friday 16 October 2026; San Carlos Digital, Lluvias dejan 60 incidentes en nueve distritos de San Carlos, 17 August 2026; La Nación, Fuertes aguaceros inundan el CPT de Aguas Zarcas y varias viviendas, 25 September 2026.
This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error · Editorial responsibility: Matthias Camenzind, Editor-in-Chief