CME Arrival from March 9th M6.3 Solar Flare

   We are now seeing the 1st signs of the March 9, 2012 CME show up at ACE at 11:59 UTC. Coming in a bit later than the expected time of around 06:49UTC (+ or - 6hrs.), this CME is forecasted to cause G3 (Strong) geomagnetic storming as the bulk of the CME passes Earth. 

View original report on the M6.3 flare + CME here:

http://mysolaralerts.blogspot.com/2012/03/m63-flare-earth-directed-cme-march-9.html

ACE Readings @ 01:16 UTC.
Monday March 12, 2012:
Solar Wind: 463.6 km/sec
Density: 17.1 protons/cm
Bz: -0.3
By: +4.9

Be sure to check back often for further updates and alerts on this event.

All updates will be added to the bottom of this report.

Original March 11th CME Alert By NOAA
NOAA Aleart Issued for March 11, 2012:
Issue Time: 2012 Mar 09 2209 UTC
WATCH: Geomagnetic A-index of 50 or greater predicted
NOAA Scale: Periods reaching the G3 (Strong) Level Likely
Valid for UTC Day: 2012 Mar 11

Geomagnetic Storm Levels and Effects - List
http://www.swpc.noaa.gov/NOAAscales/#GeomagneticStorms

Update 00:23 UTC March 12, 2012:

Today's CME arrival turned out to be more of a glancing blow than expected. Because of this, the geomagnetic storm watch issued for today has been canceled. An aurora watch for high latitude viewers is still in effect.

Issue Time: 2012 Mar 11 1951 UTC
CANCEL WATCH: Geomagnetic A-index of 50 or greater predicted for UTC Day 2012 Mar 11
Cancel Serial Number: 44
Original Issue Time: 2012 Mar 09 2209 UTC

Comment: Conditions are not present for strong geomagnetic storming.
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

In Related Solar News:

The ongoing Proton Event that began on March 7, 2012 continues into it's 4th full day. We are currently at a S3 (Strong) Solar Radiation Storm level. This is expected to continue through the day.

Solar Radiation Storm Levels and Effects - List

http://www.swpc.noaa.gov/NOAAscales/#SolarRadiationStorms

NOAA Alerts For This Proton Storm:

Issue Time: 2012 Mar 11 0935 UTC
SUMMARY: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2012 Mar 07 1015 UTC
Maximum Time: 2012 Mar 08 1115 UTC
End Time: 2012 Mar 11 0650 UTC
Maximum 10MeV Flux: 6530 pfu
NOAA Scale: S3 - Strong

Issue Time: 2012 Mar 11 0632 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 1870
Begin Time: 2012 Mar 10 0410 UTC
Yesterday Maximum 2MeV Flux: 9380 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems