Weather warnings
Jul
06
Aviso Meteorológico
Efectos de la onda tropical #13 en el país este domingo y lunes
06 de julio de 2025
11.25 am
Diagnóstico: La onda tropical #13 se localiza este domingo al oeste de Panamá, generando inestabilidad en el mar Caribe frente a la costa costarricense, lo que favorece lluvias en el Caribe Sur...
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...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-011020-1055am
Oct
01
Weather Warning
Strong rainy and electric activity on this day
October 01, 2020
10.55 a.m.
Discussion: The Intertropical Convergence Zone remains very active, positioned over the country; which, added to local factors such as morning warming and the entry of sea breezes, will favor rain and storm scenarios on this day; the strongest during the afternoon and in the first part of the night period. At this time rains are recorded in the South Pacific, particularly in the Osa Peninsula with accumulated maximums in the last hour of 50 mm.
Forecast: This afternoon rains of variable intensity and heavy downpours with electrical storms are expected in the Pacific, Central Valley and North Zone regions, amounts between 30-60 mm are estimated, more accumulated are possible in a specific way. In addition, isolated rains with storms are expected in the mountains of the Caribbean, amounts estimated between 20-40 mm.
During the first hours of the night the rains will continue, especially in coastal areas of the Pacific, amounts between 25-50 mm.
Warning: Special attention due to the high percentage of soil saturation in the Central and South Pacific, Nicoya Peninsula and North Zone.
Due to the above, the IMN recommends:
- Caution in areas vulnerable to flooding due to sewer saturation.
- Take shelter in a safe place in case of hearing 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
Rebeca Morera R
Meteorologist
DMSA-IMN
