The National Weather Service (NWS) has sounded a high alert for potential flooding across Los Angeles and the neighbouring counties of Santa Barbara and Ventura. The official warning, issued on Thursday, is slated to remain active until nighttime, urging residents and travellers to exercise extreme caution.
Timeline and Expected Impacts of the Flood Watch
According to the NWS Los Angeles office, the flood watch officially came into effect from the evening of Wednesday, December 31, and will persist through the night of Thursday, January 1. The agency highlights significant dangers, including an elevated threat of rockslides and mudslides, particularly in hilly and mountainous regions. Travellers are strongly advised to avoid canyon roads and mountain routes.
There is also a moderate risk of flooding and debris flow. The NWS has issued a stern warning, instructing people not to attempt crossing roads that are covered with water. Adjusting travel plans and carrying extra supplies is recommended for those who must venture out.
Safety Precautions and Peak Conditions Forecast
Residents, and campers in particular, should maintain a safe distance from rivers and creeks due to predictions of strong, dangerous flows in waterways. Given the high risk of trees being uprooted and turbulent sea conditions, vehicles should be parked away from tall trees, and boats must be secured in safe harbours.
The peak of the flood watch is anticipated between 2 am and 6 pm on Thursday, January 1. During this period, peak rain rates are forecast to be 0.25 to 0.50 inches per hour, with isolated areas possibly experiencing intense downpours of 0.5 to 1.0 inch per hour.
Total rainfall accumulations are projected to be between 1.0 and 2.0 inches for many areas. However, mountains and foothills could see substantially higher totals, ranging from 2.0 to 5.0 inches. Accompanying the rain will be strong winds, with peak gusts of 20-40 mph and localised gusts potentially reaching 40-50 mph.
Essential Driving Tips for Heavy Rain
If you must drive during the rainy conditions, follow these critical safety steps:
- Switch on your headlights during the daytime as well. This drastically improves your vehicle's visibility to others and reduces accident risk.
- Try to stay on high ground and use the middle lanes where water tends to pool less.
- Maintain a safe distance from large vehicles like trucks and buses. They can kick up massive water sprays that severely limit your visibility.
Staying informed and adhering to these official guidelines is crucial for safety during this severe weather event.
