Flash-Flood Watch - 21st November 2022(6pm)
A FLASH-FLOOD WATCH IS IN EFFECT FOR ST VINCENT AND THE GRENADINES
Issued at 6:00 pm, Monday 21st November, 2022
……..Flash-Flood Advisory upgraded to a Flash-Flood Watch….
Occasional cloudy skies and showers associated with a trough system will continue to affect the Eastern Caribbean including St. Vincent and the Grenadines. On Tuesday, a deterioration in weather conditions is anticipated as the upper-level environment becomes more supportive. Consequently, shower activity is expected to increase in frequency and intensity during the next few days. The forecast into Thursday calls for cloudy to overcast skies, pockets of moderate to heavy showers and isolated thunderstorms.
The latest forecast model guidance suggests rainfall accumulations of 50-75 millimeters (approximately 2-3 inches) with isolated higher amounts in mountainous areas. Due to the saturated nature of the soils resulting from previous rainfall events, there is a high probability of flash-flooding and landslides occurring during the watch period.
As a result, the flood advisory that was already in effect for a low risk of flooding, has been upgraded to a Flash-Flood Watch for St. Vincent and the Grenadines until further 6:00 pm, Thursday 24th November, 2022. Residents and motorists in areas prone to flooding and landslides or near rivers and streams should exercise caution.
A Flood-Watch is issued when conditions are favourable and there exists the possibility of flooding during the watch period.
This flash-flood watch may be upgraded to a warning if conditions warrant.