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...
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,...
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...
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...
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...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-011020-Actividad lluviosa y eléctrica fuerte en este día-Actualización-
Oct
01
Weather Warning
Strong rain and electric activity on this day -Update-
October 01, 2020
03:40 p.m.
Diagnosis: The Intertropical Convergence Zone remains very active and together with the morning warming and the entry of sea breezes have generated in the first part of this afternoon strong rainy and electrical activity in the North and South Pacific, to a lesser extent towards the Central Valley, causing accumulations of 30 mm in the last two hours and maximum of 60 mm in 6 hours.
Forecast: In the remainder of the afternoon, rains of variable intensity and downpours with electrical storms are expected in the Pacific regions (the strongest in the north and south), Central Valley and North Zone, amounts between 30-60 mm are estimated , larger accumulated are possible in a localized manner. On the other hand, isolated rains with storms are expected in the Caribbean mountains, estimated amounts 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 sewerage saturation.
• Take shelter in a safe place in case you hear 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
