Weather warnings
Aviso Meteorológico-IMN-250923-0525pm
Sep
25
Weather Warning
Tropical Wave #40 enters the country
September 25, 2023.
5.25 p.m.
Discussion: Tropical Wave #40 enters the national territory, which, together with local factors and the proximity of the Intertropical Convergence Zone, will maintain an ideal environment for afternoon rainfall to extend into the night period. During this afternoon, showers and thunderstorms have been recorded in the Central Valley, the North Zone and the North Pacific, the maximum accumulated values are between 30-50 mm in the last 4 hours.
Forecast: Towards the end of the afternoon and during the night, isolated rains and downpours with thunderstorms will continue in the Central Valley, the North Zone and the North Pacific, amounts between 30-60 mm. For the Central and South Pacific, scattered moderate rains and thunderstorms are estimated in these periods, amounts between 25-50 mm.
For its part, in the mountainous parts of the Caribbean, isolated rains are expected, accumulated between 10-40 mm. Towards late hours of the night, rain is possible in coastal areas of the Caribbean
Warning: Special attention in the Central and South Pacific regions because they are the sectors where the heaviest rains are expected.
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 between 80 to 100km/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
Rebeca Morera R
Meteorologist
DMSA-IMN
Weather warnings history
In this section you will find the weather warnings history.
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...
Jun
25
Weather Warning -Update-
Variable Intensity Rainfall Expected This Night
June 25th, 2025
5.10 pm
Diagnosis: Following the passage of strong Tropical Wave #8 on Tuesday, this Wednesday is expected to bring a return to more typical rainy season conditions. Today's rainfall is mainly...
Jun
25
Weather Advisory
Variable Intensity Rainfall Expected This Afternoon
June 25, 2025
10:00 am
Diagnosis: Following the passage of strong Tropical Wave #8 on Tuesday, conditions are expected to return to a more typical rainy season pattern this Wednesday. Today's rainfall will be mainly...
Jun
24
Weather Warning -Update-
Tropical wave #8 over Costa Rica
June 24th, 2025
04:50 p.m.
Diagnosis: The instability of Tropical Wave 8 has manifested itself with scattered heavy rains and downpours in various locations in the central and Pacific regions of the country. Rainfall with...
Jun
24
Weather Warning
Tropical wave #8 over Costa Rica
June 24th, 2025
10:15 a.m.
Diagnosis: The axis of Tropical Wave #8 entered the country in the early hours of Tuesday. This system has caused cloud incursions toward the northern Caribbean border regions with Nicaragua....
Jun
23
Aviso Meteorológico
Condiciones lluviosas fuertes este lunes en el país y tren de ondas para la semana
23 de junio de 2025
09.45 a.m.
Diagnóstico: Luego del paso de la onda tropical #7 por nuestro país este domingo, la Zona de Convergencia Intertropical se encuentra robusta y bien organizada sobre el sur de Centroamérica. Esta...
