Weather warnings
Weather Warning-IMN-210923-09:55 a.m.
Sep
21
Weather Warning
Wet and unstable pattern with a chance of localized heavy showers
Septiembre 21, 2023
09.55 a.m.
Diagnosis: Factors such as the moderate trade wind in the north of the country, a nearby and active Intertropical Convergence Zone, as well as warm temperatures for both slopes, will be the ingredients that will modulate the weather and give way to localized downpours with storms of strong intensity.
Forecast: For the afternoon, localized downpours with storms are forecast, but of strong intensity, both in the western and mountainous regions of the Caribbean and on the Pacific slope. Specifically, in localities in the west of the North Caribbean, South Caribbean, the mountains of Coto Brus and Zona de los Santos, the canton of Aguirre and Parrita, there will be occasional downpours with storms. In addition, to the east and west of the Central Valley there is a chance of showers with occasional storms. The estimated amounts will be between 20 - 40 mm with specific maximums between 60 - 80 mm.
The Northern Zone will experience occasional showers in the afternoon and at night, while in the North Pacific the probability of occasional downpours and a possible storm over the peninsula will remain. The estimated amounts will be between 20 - 40 mm with specific maximums of up to 50 mm.
Warning: Special attention to mountainous sectors of the North Zone, South Pacific (Coto Brus, Fila Brunqueña Oriental), as well as to mountainous sectors of the west and north, both the Central Valley and the North Caribbean. This is due to saturated soil conditions, which increases the probability of landslides.
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 between 80 to 100km/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.
Aviso Meteorológico-IMN-210624-1025am
Jun
21
Weather Warning
Heavy showers and thunderstorms this afternoon and evening
June 21, 2024.
10.25 a.m.
Discussion: High humidity and instability prevail over Costa Rica and its surroundings, as well as local factors, warm morning temperatures and the entry of sea breezes; the passage of tropical wave #11 is added on this Friday. All of the above will provide ideal conditions for the presence of cloudiness and heavy showers with thunderstorms.
Forecast: This afternoon and during the first part of the night, large cloud formations are expected, as well as heavy rains and thunderstorms, starting over the mountainous axis and gradually extending towards the lower areas.
In the Central Valley, rains of variable intensity and thunderstorms are expected, the strongest in the North and East, with estimated accumulations between 20-60 mm in 6-hour periods. In addition, there is a possibility of fog banks at the end of the afternoon and at night, with drizzle in the early hours of the night. For the North Pacific, the North Zone and mountains of the Caribbean, heavy rains and thunderstorms are expected, amounts between 30 mm and 70 mm in 6-hour periods, higher accumulations are possible in a localized manner. In the Central and South Pacific, isolated showers are expected in the surroundings of the mountain ranges and border area with Panama, extending towards coastal areas. Estimated amounts between 10 mm and 50 mm.
Warning: The rains projected for urban areas may again be precursors to flooding and sewer saturation in already recurring areas. Saturated soils are monitored in the mountains of the South Pacific, Valle del General, the mountains of the North Caribbean and the North Zone, as well as both peninsulas and near the gulfs, which are regions vulnerable to landslides and possible flooding.
Due to the above, the IMN recommends:
- Be careful due to sewer saturation in places prone to this type of flooding.
- Prevention in the event of an electrical storm and seeking shelter in a safe place in case of strong gusts of wind near the 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: Instituto Meteorológico Nacional CR and the WEB Page: www.imn.ac.cr
Rebeca Morera R
Meteorologist
DMSA-IMN