Weather warnings

May

08

Meteorological Warning Update

(Update) Showers and thunderstorms during the afternoon and early morningmeras horas de la noche

May 8, 2025
6:00 pm

Forecast: Rainy conditions have been observed this afternoon on the Pacific coast, much of the Central Valley, and mountainous areas of the Caribbean and the Northern Zone, due to the activity of...

See More


May

08

Weather Warning

Showers and thunderstorms during the afternoon and early evening

May 08, 2025
10.30 a.m.

Discussion: The Intertropical Convergence Zone remains located over Costa Rica, generating significant moisture and instability. This, along with morning warming and the arrival of sea breezes,...

See More


May

07

Aviso Meteorológico Actualización

(Actualización) Lluvias y aguaceros fuertes en el Valle Central y la vertiente del Pacífico

7 de mayo de 2025
6:20 pm

Diagnóstico: La Zona de Convergencia Intertropical sobre el país, en conjunto con factores locales como el calentamiento diurno y el ingreso de humedad desde el Océano Pacífico, favorecerá...

See More


May

07

Weather Warning

Heavy rain and downpours in the Central Valley and the Pacific slope

May 7, 2025
09:35 a.m.

Diagnosis: The Intertropical Convergence Zone (ITCZ), combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, will favor variable rainfall throughout...

See More


May

06

Weather Warning (Update)

Heavy showers this afternoon and early evening in the country

May 6, 2025
6:20 p.m.

Diagnosis: The proximity of the Intertropical Convergence Zone, combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, has favored heavy downpours...

See More


Weather warnings history

In this section you will find the weather warnings history.

« Back

Aviso Meteorológico-IMN-120520-0300pm

May

12

Weather Warning

Heavy downpours in the Central and South Pacific

May 12, 2020
03.00 p.m.

Discussion: Local factors such as the high temperatures recorded this morning and the entry of humidity from the Pacific, are promoting this Tuesday afternoon important cloudy developments and heavy showers with thunderstorms in the South Pacific, with accumulated in the last two hours between 50-90 mm.

Forecast: In the remainder of the afternoon and during the first hours of the night, the heavy rainy and electrical activity will continue in the South Pacific, at the same time it will spread to the Central Pacific and even to the south of the Nicoya Peninsula, amounts are estimated between 40-70 mm. In the rest of the country, the possibility of rain is low; however, if it does occur, it will be in the mountainous parts in the form of light rain, with amounts less than 10 mm.

Due to the above, the IMN recommends:

  • Caution in areas vulnerable to flooding due to sewer saturation.
  • Take refuge in a safe place in case of hearing an electrical storm or perceiving strong gusts of wind near the storm clouds, as well as precaution for possible fall of 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