WATCH / WARNING

The alert ladder borrows deliberately from severe-weather practice. WATCH (day-ahead, probability above the watch threshold) means plan for a possible curtailment tomorrow. WARNING (day-of) means today is likely a peak day, so confirm readiness. ACTION means execute. Every level carries its own glyph and color, so no single channel (color, word, or symbol) is ever the only signal.

See it live: today's peak call · stress-test the drivers