interplanetary shock wave on October 5th at
0240 UT when the solar wind velocity soared
from 360 to 460 km/s in less than one minute.
The disturbance hit Earth's magnetosphere
about 45 minutes later. Since then skywatchers
across the northern tier of US states (as far
south as latitude 43 degrees) and in Canada
have spotted red and green-colored aurora. The
Earth's magnetic field remains near G2 storm
levels at 1500 UT on Oct. 5th.
-- spider (spider0@usa.net), October 05, 2000