Weather warnings
Jun
28
Weather Warning
Tropical Wave #10 over Costa Rica
June 28th, 2025
10:30 a.m.
Diagnosis: Tropical wave #10 is over the country this Saturday, causing instability in maritime areas of the Caribbean and northern parts of the Northern Zone. There has been increasing...
Jun
27
Weather Warning -Update-
Rainy Afternoon in Costa Rica
June 27th, 2025
05.40 p.m.
Forecast: After the passage of Tropical Wave 9 yesterday, Thursday, the atmosphere remains unstable over the country. Along with warm morning temperatures and high humidity from recent rains,...
Jun
27
Weather Warning
Tarde lluviosa en Costa Rica
June 27th, 2025
10:00 am
Diagnosis: After the passage of tropical wave #9 on Thursday, the atmosphere continues to be unstable over the country, which, together with the warm temperatures of this morning and the high...
Jun
26
Weather Warning | Update
Rainfall activity of varying intensity this afternoon in the Pacific and Northern Zone
June 26, 2025
5:00 p.m.
Diagnostic: The passage of Tropical Wave #9, in combination with the Intertropical Convergence Zone, maintains atmospheric instability over the country. This has generated rain showers and...
Jun
26
Weather Advisory
Variable intensity rainfall expected this afternoon, in the Pacific and North Zone
June 26th, 2025
9:50 a.m.
Diagnostic: Tropical Wave 9, located in the Pacific near the country, is still unstable in its surroundings. Along with the Intertropical Convergence Zone over southern Central America, it will...
Weather warnings history
In this section you will find the weather warnings history.
Aviso meteorologico IMN 26102020 10:15 p.m.
Oct
29
Weather Warning
Rainy conditions on the Pacific Slope and North Caribbean
October 26, 2020
10:15 p.m.
Diagnosis: Unstable atmospheric conditions generated after the passage of tropical wave # 49, in addition to the proximity of the Intertropical Convergence Zone, have generated heavy downpours accompanied by an electrical storm in the Pacific and North Caribbean of the country tonight.
The most important accumulated in the last hours have been presented in Barú, with 78.2mm, Quepos with 47.8mm and Guácimo with 41.8mm.
Forecast: During the rest of the night and part of the morning, rains of variable intensity will continue, accompanied by downpours and an electrical storm located on the Pacific slope, with accumulated estimates between 15-40mm.
For the mountainous parts of the Caribbean and coastal sectors of the North Caribbean, moderate rains with a possible electrical storm are expected on a specific basis, estimating amounts between 10-20mm.
Warning: Be very cautious around the Guanacaste mountain range, North Zone and South Pacific, since these are the regions with high soil saturation.
Due to the above, the IMN recommends:
• Caution in areas vulnerable to flooding due to sewerage saturation.
• Take shelter in a safe place in case you hear an electrical storm or perceive strong gusts of wind near the storm clouds, as well as caution against possible falling tree branches, power lines, among others.
• Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEB Page: www.imn.ac.cr
Andres Gamboa
Meteorologist
DMSA-IMN
