Possible minor CME impact

possible-minor-cme-impact

A magnetic filament connected to sunspot AR1450 erupted on April 2nd, hurling a faint CME in the direction of Earth. This CME has a northerly trajectory and is not expected to be geoeffective. However, a weak impact is expected sometime on April 4th as it can be seen on CME forecast. NOAA forecasters estimate a ~25% chance of polar geomagnetic storms when the cloud arrives.

Solar activity is currently very low. Sunspot 1450 did form some new spots towards the center of the group, but remains stable. All other regions have been quiet.

Joint USAF/NOAA Report of Solar and Geophysical Activity (03 Apr 2012)

Solar activity has been very low for the past 24 hours. Region 1450 (N16W04) produced two B4 flare events, one at 02/2220Z and the other at 03/1228Z. A weak CME associated with a filament eruption near N30E11, became visible on LASCO C2 imagery at 02/2348Z. This CME has a northerly trajectory and is not expected to be geoeffective. Solar activity is expected to be very low with a chance for C-class flares for the next three days (04-06 April).

The geomagnetic field was at quiet levels for the past 24 hours. The geomagnetic field is expected to be quiet to unsettled on days one and two (04-05 April) due to a coronal hole high speed stream becoming geoeffective on 04 April, followed by the anticipated arrival of a weak CME associated with the filament eruption that occurred at 02/0224Z. Day three (06 April) is expected to return to quiet levels.

Five CMEs in five days

The Sun blew out at least five halo coronal mass ejections (CMEs) and several others over a five-day period (Mar. 24-29, 2012). SOHO’s C3 coronagraph observed the action. Halo CMEs are ejections whose leading edge appears to spread out from the Sun in a kind of circle (i.e., halo), which indicates that the expanding cloud of particles is heading either directly towards or away from Earth. Most of the events were from the far side of the Sun, except for the two close together early on Mar. 27. This dynamic level of activity is in line with expectations that we are approaching solar maximum.

If you value what we do here, open your ad-free account and support our journalism.

Share:

Related articles

Producing content you read on this website takes a lot of time, effort, and hard work. If you value what we do here, select the level of your support and register your account.

Your support makes this project fully self-sustainable and keeps us independent and focused on the content we love to create and share.

All our supporters can browse the website without ads, allowing much faster speeds and a clean interface. Your comments will be instantly approved and you’ll have a direct line of communication with us from within your account dashboard. You can suggest new features and apps and you’ll be able to use them before they go live.

You can choose the level of your support.

Stay kind, vigilant and ready!

$5 /month

  • Ad-free account
  • Instant comments
  • Direct communication
  • New features and apps suggestions
  • Early access to new apps and features

$50 /year

$10 /month

  • Ad-free account
  • Instant comments
  • Direct communication
  • New features and apps suggestions
  • Early access to new apps and features

$100 /year

$25 /month

  • Ad-free account
  • Instant comments
  • Direct communication
  • New features and apps suggestions
  • Early access to new apps and features

$200 /year

You can also support us by sending us a one-off payment using PayPal:

Leave a reply

Your email address will not be published.