speed 579.62 km/s density 3.98 protons/cm3 temperature 230876 K bt 7.81 nT bz-gsm -5.91 nT by-gsm 2.64 nT # type: reference-data # source: NOAA Space Weather Prediction Center # as-of: 2026-10-31T22:53:00Z # spacecraft: ACE # measured: 2026-10-31T22:53:00Z # note: measured about 1.5 million km upstream: conditions reach Earth roughly 30-60 minutes later # license: https://www.weather.gov/disclaimer