Following a powerful magnitude 8.8 earthquake off Russia, Japan and the US have issued tsunami warnings, prompting evacuations along the Pacific coast of Japan and in Hawaii.

• The first tsunami waves, reaching up to 40cm, arrived in Japan's Hokkaido prefecture before 10:40 local time.
• US authorities warn Hawaii could face "destructive" 3-meter-high waves, while Guam is threatened by 1-3 meter waves.
• The earthquake, tied as the sixth most severe in history, generated a 3-4 meter tsunami in Russia's Kamchatka Peninsula, causing damage to a kindergarten but no injuries.