Tsunami Threat to California: Timeline and Wave Heights After Kamchatka Earthquake

Tsunami Advisory Issued for California

• ⚠️ A magnitude 8.8 earthquake near Russia's Kamchatka Peninsula triggered a tsunami advisory for California.
• 🚨 While Japan and Hawaii issued tsunami warnings and advisories with sirens and evacuation orders, California's impact is expected to be significantly less severe.

Expected Tsunami Arrival and Impact in California

• ⏰ Tsunami waves are predicted to begin arriving in California around 1:00 a.m., coinciding with high tide.
• 🌊 The maximum predicted wave height for most of Southern California is less than one foot.
• 📈 Santa Barbara may see a slightly larger rise, with predictions of 1 to 2 feet, and Port St. Louis potentially experiencing a rise of 2 to 3.8 feet.

Understanding Tsunami Wave Characteristics

• 💡 A tsunami is characterized by a sudden increase in sea level, not necessarily a crashing wave like those seen at a beach.
• 💥 The destructive power comes from the surge of water inland, as witnessed in the Fukushima tsunami, which can carry debris and cause significant inundation.

Safety Recommendations and Potential Harbor Damage

• 🚫 Widespread inundation is not expected in California.
• 🏖️ However, it is recommended to stay off beaches and out of harbors and marinas.
• ⚓ Surging water in harbors can cause damage, potentially detaching boats and docks.
• ⏳ The impacts of a tsunami can last for several hours, not just at the initial arrival time.