Weather warnings
Jul
08
Informative Weather Notice
Sahara dust over the country
July 08th, 2025
9:50 a.m.
Diagnosis: Increases in atmospheric pressure in the Caribbean Sea accelerate the trade winds over the basin, as well as over central and northern Spain. Furthermore, a dry, stable air mass...
Jul
07
Weather Warning
Heavy downpours during the afternoon in the Pacific and northern regions
July 07th, 2025
10.40 a.m.
Discussion: Tropical Wave 13 is located in western Costa Rica, close to entering the Pacific Ocean. Although it is a weak wave, its interaction with the Intertropical Convergence Zone increases...
Jul
06
Aviso Meteorológico
Efectos de la onda tropical #13 en el país este domingo y lunes
06 de julio de 2025
11.25 am
Diagnóstico: La onda tropical #13 se localiza este domingo al oeste de Panamá, generando inestabilidad en el mar Caribe frente a la costa costarricense, lo que favorece lluvias en el Caribe Sur...
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...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-300620-0230pm
Jun
30
Weather Warning
Heavy showers and storms in the Central and South Pacific this afternoon
June 30, 2020
02.45 p.m.
Discussion: Instability in the upper atmosphere added to the warm morning temperatures and the entrance of humidity from the Pacific have favored the presence of downpours and thunderstorms in regions of the Central and South Pacific, with maximum accumulations of 30 mm in the last two hours.
Forecast: In the remainder of this afternoon and early evening, heavy showers with a thunderstorm will remain in the Central and South Pacific, as well as in the Nicoya Peninsula in a dispersed manner, with amounts between 50-60 mm in lapses of 6 hours.
In the North, Caribbean and Central Valley, the rains will be witnessed in isolation, accumulated less than 20 mm in the periods indicated above.
Warning: Special attention in the Central Pacific and South Pacific, which are regions that this Tuesday already have saturated soils.
Due to the above, the IMN recommends:
- Caution in areas vulnerable to flooding due to sewerage saturation.
- Take refuge in a safe place if you hear a thunderstorm or feel strong gusts of wind near the storm clouds, as well as caution for possible falling tree branches, power lines, among others.
- Attention on the main national highways, such as route 27 and route 32.
- 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
