Weather warnings
Jul
01
Weather Warning
Rainy conditions in the Caribbean and Northern Zone this Tuesday and Tropical Wave #12
Jul 01th, 2025
10 am
Diagnosis The strengthening of the trade winds over the central and northern regions of the country has produced wind gusts of up to 50 km/h in areas such as Alajuela this morning. This...
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...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-150524-9.30 am
May
15
Weather Warning
Downpours this day in the country
May 15, 2024
9.20 am
Diagnosis: The Intertropical Convergence Zone remains close to the country and very active, which is generating humid and unstable conditions since the morning in coastal sectors of the North Pacific. In addition, local factors such as morning warming and the contribution of humid flow from the Pacific Ocean to land contribute to instability in the country in the next three days.
Forecast: On the afternoon of this Wednesday, heavy rains and downpours with electrical storms are estimated in regions of the Pacific and Northern Zone, amounts between 40-80 mm, while in the Central Valley, mountains of the Caribbean and the Northern Zone, reactivation of the storms is anticipated. Precipitation especially in the second part of the afternoon, amounts between 30-60 mm. At night, rains and downpours with storms are expected located between the coastal Pacific only at the beginning of the period with amounts between 10-40 mm.
Warning: Be careful in sectors of the Pacific in general due to humid soils both in low areas and especially in mountainous areas. Special attention in urban areas of the Central Valley due to possible flooding due to sewage saturation. In addition, heavy rains in the Northern Zone can generate rapid growth of streams and rivers. Be attentive to the development of storm clouds which present their own and significant characteristics such as descending gusts, high precipitation intensity in short periods of time and electrical discharges.
Due to the above, the IMN recommends: • Caution due to sewage saturation in places prone to this type of flooding. • Prevention against electrical storms 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 80 km/h in some isolated cases. • Stay informed through social networks, Twitter: @IMNCR, Facebook: National Meteorological Institute CR and the WEB Page: www.imn.ac.cr Gabriela Chinchilla R. Meteorologist DMSA-IMN
Gabriela Chinchilla R.
Meteoróloga
DMSA-IMN
