Weather warnings
Weather Warning-IMN-090924
Sep
09
Weather Warning (Update)
Heavy downpours in the country this Monday
September 09, 2024
4:45 p.m.
Diagnosis: Unstable conditions continue in the atmosphere around the country, due to the proximity of the Intertropical Convergence Zone and the high humidity content. This condition, together with local factors, has favored variable rain activity for this afternoon. The most important records for this afternoon are for the North and South Caribbean, with maximum accumulations between 70 - 100 mm (Braulio Carrillo National Park, Pococí, Guápiles, Talamanca), while other sectors present between 40 - 60 mm (Turrialba). In the case of the North Zone, accumulations between 30 - 50 mm are recorded. For the Central Valley and Pacific regions, more localized accumulations are recorded and between 10 - 40 mm.
Forecast: For the rest of the afternoon and early evening, showers with strong thunderstorms will continue (decreasing in intensity at night), these in the Caribbean regions and parts of the Northern Zone, with accumulated amounts between 30 - 50 mm with maximum amounts between 70 - 110 mm.
For the Pacific slope, particularly for the mountainous areas and around the border with Panama, around the Osa Peninsula in the South Pacific, around the Gulf of Nicoya, isolated showers with thunderstorms are expected. Estimated amounts between 30 - 60 mm with possible amounts close to 80 mm.
For the Central Valley, variable rains are expected in the first hours with accumulated amounts between 10 - 35 mm.
Warning: Saturated soil conditions continue in the Caribbean and the Northern Zone, in the Central Valley, mountains of the Pacific slope. This situation indicates a significant risk of incidents due to sewer saturation, river flooding or landslides, so special caution is recommended.
Due to the above, the IMN recommends:
• Caution due to sewer saturation in places prone to this type of flooding.
• Prevention against electrical storms and seek shelter in a safe place in case of strong gusts of wind 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: Instituto Meteorológico Nacional CR and the WEB Page: www.imn.ac.cr
Jose Valverde Mora
Meteorologist
DMSA-IMN
Weather warnings history
In this section you will find the weather warnings history.
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...
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....
