NASA's PUNCH mission predicts solar storm arrival within 30 minutes, 10x tighter than before
NASA's PUNCH satellite mission tracked a coronal mass ejection nearly all the way from the Sun to Earth and predicted its arrival within 30 minutes, ten times more precise than the five-hour window forecasters relied on before. The test gives grid operators, satellite teams and a
NASA's PUNCH mission, four small satellites orbiting about 620 kilometers up, tracked a coronal mass ejection from the Sun nearly all the way to Earth in a proof-of-concept test, something older instruments like SOHO and STEREO could only do for about a fifth of the journey. Twelve hours after the May 2025 eruption left the Sun, the model predicted arrival eight hours later, and the actual storm showed up within 30 minutes of that call, ten times tighter than the five-hour window forecasters have used for years. The findings were presented this week at the COSPAR conference in Florence and are under review at the journal Space Weather. Current systems give grid and satellite operators only fifteen minutes to an hour of warning before impact; PUNCH's eight-hour lead time is enough to isolate transformers, reroute power and adjust satellite orbits. NASA is now testing a faster real-time version called QuickPUNCH.