FLASH FLOOD WATCH • Friday afternoon - Saturday afternoon
The National Weather Service in San Diego has issued a Flash Flood Watch, which is in effect from Friday afternoon to Saturday Afternoon:
• Flash Flood Watch for a portion of southwest California...including the following areas...Apple and Lucerne Valleys...Coachella Valley...Orange County Coastal Areas...Orange County Inland Areas...San Bernardino and Riverside County Valleys-The Inland Empire...San Diego County Coastal Areas...San Diego County Deserts...San Diego County Mountains...San Diego County Valleys...San Gorgonio Pass Near Banning and Santa Ana Mountains and Foothills.
• A major Pacific storm will bring moderate to heavy rain to the area. The rain is forecast to begin across Orange and San Bernardino Counties during the day on Friday, then spread east and south through Friday evening. The period of greatest impact is forecast to be Friday evening through the overnight hours with widespread moderate to heavy rain forecast. The heaviest rainfall is forecast to fall across Orange County where 2 to 4 inches of rain is forecast, except around 5 inches in the Santa Ana mountains. Total rainfall of 2 to 4 inches is forecast for the Inland Empire with 1 to 2 inches further south across San Diego County and around an inch across the deserts. Localized higher amounts are possible. Rainfall rates of a half an inch to one inch per hour are possible, which could lead to flash flooding.
• PRECAUTIONARY/PREPAREDNESS ACTIONS...A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation.
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Call (760) 725-5061 to report flooding, debris, mudslides, and other weather related issues.
Periods of heavy rain can increase the Flash Flood Potential. Local flooding and potentially deep, standing water, in the usual low lying areas across the Base, should be anticipated during periods of increased or heavy rains.
Burned areas and steep terrain are susceptible to mudslides, debris flows and erosion issues which could impact infrastructure, roadways and training areas. Visibility will ultimately be reduced increasing the risk to driver safety. The potential for power outages will exist.
All personnel aboard the Base should exercise extreme caution during severe weather conditions. Personnel in training areas should be notified to seek higher ground in the event of heavy or prolonged rainfall. Drainage areas, creeks, and river areas should be avoided. Avoid driving through standing water. All personnel aboard the Base should remain diligent in safety procedures and situational awareness. Extreme caution should also be taken in areas with limited to no lighting such as Basilone Rd between Camp Horno and Las Pulgas. All personnel should be advised to adhere to traffic warning signs or notifications and to use extreme caution while driving.
Anticipate there MAY be temporary road closures in areas prone to local flooding and/or potential impact from burned areas during periods of increased or heavy rains.
These areas include:
• Stuart Mesa Road between Edson Range and Las Flores
• Intersection of Stuart Mesa and Vandegrift Road
• Pulgas Road
• Access to Camp Talega
• Various roads around Camp Horno
• Vandegrift road along Isadora Flats south of the Air Station
• Vandegrift road near the Ranch House
• Vandegrift road near the Stables
• Deluz Road
• Beach Club Road (CLOSED)
We will continue to pass information throughout the weekend as needed on weather, road closures, and power outages.
For the latest updates from Marine Corps Installations West and Marine Corps Base Camp Pendleton, follow us on Twitter @MCIWPendletonCA and Facebook as they come available.
National Weather Service updates can be located at: http://www.wrh.noaa.gov/sgx/