NOAA K-4 Warning extended another 12 hours-

Space Weather Message Code: WARK04
Serial Number: 2052
Issue Time: 2013 Mar 01 2355 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2051
Valid From: 2013 Mar 01 0233 UTC
Now Valid Until: 2013 Mar 02 1200 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
[link to www.swpc.noaa.gov]

From NOAA"s 'Discussion'-

Solar Wind
.24 hr Summary...
Solar wind speed, as observed by the ACE spacecraft, indicates that the
ACE/Earth are currently under the influence of a CH/HSS. Wind speeds
increased over the past 24hrs from below 400 km/s to just over 650 km/s
at the time of this report. Interplanetary magnetic field Bt values
peaked near 18 nT at HSS onset, while the Bz component dipped as far
south as -15 nT. Bt is currently near 6nT and Bz has been
intermittently hitting -5nT. The phi angle transitioned from a positive
(away) sector to a predominately negative (toward) sector at around
01/0200 UTC, where it has remained since.

.Forecast...
Continued elevated solar wind speed is expected for the next three days
(02 - 04 Mar) due to CH/HSS effects.

Geospace

.24 hr Summary...
The geomagnetic field began the period at active levels with the onset
of CH/HSS effects. An isolated minor storm period (NOAA Scale G1 -
Minor) was observed during the 01/0900-1200 UTC window. Active
conditions were observed each period since.

.Forecast...
Continued active conditions are expected on day 1 (02 Mar) due to
continuing CH/HSS effects. A slight chance for an isolated minor
geomagnetic storm (NOAA Scale G1 - Minor) remains during the overnight
hours. The geomagnetic field is expected to settle a bit for days 2 and
3 (03-04 Mar), with conditions expected to decrease to quiet to
unsettled levels.

[link to www.swpc.noaa.gov]