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...

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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,...

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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...

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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...

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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...

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Weather warnings history

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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