Weather warnings
Weather Warning-IMN-170524-9:10 a.m.
May
17
Weather Warning
Friday afternoon with variable rains in the country
May 17, 2024
09:10 a.m.
Diagnosis: The Intertropical Convergence Zone maintains instability and humidity over central and southern Central America, coupled with local factors such as breezes and morning warming, will be favoring afternoon rain over the country.
Forecast: During the afternoon today, the presence of downpours with storms is forecast over the mountains of the South Pacific, towards the center and west of the Central Valley, as well as the Central Pacific and North Pacific. The accumulations for these regions will be between 30 - 50 mm with maximums between 60 - 80 mm, with the sectors in the center and northwest of the country being where the highest accumulations are recorded.
The Northern Zone and Caribbean regions will present scattered showers and downpours accompanied by electrical storms, being over the mountains for the Caribbean sectors. The estimated accumulations for these regions will be between 15 – 40 mm with local maximums of 60 mm.
Warning: Be careful in mountainous sectors of the General Valley, those of the South Pacific and the mountains of the Northern Caribbean, this due to humid soils. 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
Jose Pablo 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....
