Severe weather conditions are anticipated across California as a significant Pacific storm approaches. The storm is expected to bring heavy rain, thunderstorms, and substantial snowfall to various regions starting Monday afternoon.
Storm Overview
The National Weather Service has issued warnings for flood watches and winter storms throughout the state. Rainfall estimates predict between 0.5 to 1.5 inches across California, with certain coastal ranges and Sierra foothills receiving as much as 4 inches by Tuesday evening.
Rainfall Predictions
- San Francisco to Los Angeles: 0.5 to 1.5 inches
- Coastal Ranges and Sierra Foothills: Up to 4 inches
- Higher Elevations (Sierra Nevada): 1 to 3 feet of snow
The Bay Area is set to experience heavy rain starting around 11 a.m. on Monday and continuing through early evening. Scattered thunderstorms are likely, particularly in the Santa Cruz Mountains and along the coastal ridges.
Temperature and Conditions
Temperatures are expected to remain cool, with daytime highs in the low to mid-60s, significantly below normal for this time of year. Nighttime lows could drop into the 40s in some inland areas.
Impact on the Sierra Nevada
The Sierra Nevada is bracing for a robust early-season snowstorm. Snow levels will initially begin above 7,500 feet but are expected to drop to around 5,000 feet by Tuesday. Winter storm warnings will be in effect from Shasta County to the Sequoia National Forest through Wednesday.
Snowfall Estimates
- High Sierra (above 8,000 feet): 2 to 3 feet
- Central and Southern Sierra (down to 6,000 feet): 1 to 2 feet
Travel restrictions may be enacted along Interstate 80 as significant snowfall is predicted to impact Donner Pass and areas such as Truckee and South Lake Tahoe.
Concerns for Flooding and Debris Flows
As thunderstorms are anticipated to produce heavy rainfall, the risk of flooding is pronounced, particularly in areas affected by recent wildfires. Flood watches have been issued for foothills across the Sierra, with the potential for debris flows in burn scar regions.
Regional Flood Watches
- Sierra Foothills: 1 to 3 inches of rain expected
- Southern California: 0.5 to 1.5 inches likely
Flash flooding and debris flow are also risks near burn scars in the mountains of Santa Barbara and Ventura Counties.
Conclusion
Residents across California should prepare for challenging weather conditions as the storm progresses. Stay informed about potential travel disruptions and take necessary precautions to ensure safety during this severe weather event.
