· ·

S2 radiation storm generated by X1.7 solar flare in progress

s2-radiation-storm-generated-by-x1-7-solar-flare-in-progress

Sunspot 1402 located on the northwest limb, produced a major X1.7 Solar Flare at 18:37 UTC Friday afternoon. Solar activity is now expected to be very low as 1402 rotated onto the western limb and is now out of direct Earth view. All remaining current visible regions are magnetically simple and remain stable.

<WSA-Enlil Solar Wind Prediction >

Energetic protons from the sun are swarming around Earth on Jan. 28th accelerated by yesterday’s X-flare. The S2 Level Radiation Storm generated by yesterdays solar flare continues on Saturday, but is expected to slowly decrease during the day today. S2 radiation storm on NOAA scales means this is moderate storm – it can cause  small effects on HF propagation through the polar regions and affect navigation at polar cap locations as well as spacecraft and satellites at the nuisance level.

Joint USAF/NOAA Report of Solar and Geophysical Activity (28 Jan 2012)

Solar activity has been low. Region 1410 (N18E48) produced a C1 flare at 28/1534Z. New Region 1411 (S26E09) was numbered today and is classified as an Axx-alpha type group. Solar activity is expected to be very low to low for the next three days (29-31 January).

The geomagnetic field was quiet to unsettled during the past 24 hours due to effects from a coronal hole high speed stream (CH HSS). The greater than 100 MeV proton event that began at 27/1900Z and reached a max of 12 pfu at 27/2140Z, was still in progress at the time of this writing. The greater than 10 MeV proton event that began at 27/1905Z and reached a peak of 796 pfu at 28/0205Z, was also still in progress at the time of this writing. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during the period.

The geomagnetic field is expected to be mostly quiet on day one (29 January) as effects from the CH HSS subside. Unsettled to active conditions with a chance for isolated minor storm periods are expected on day two (30 January) due to effects from the CME associated with the X1 flare observed on 27 January. Quiet to unsettled conditions are expected on day three (31 January) due to residual CME effects. The greater than 100 MeV
proton event is expected to end by 29/0000Z. The greater than 10 MeV proton event is expected to continue through day one (29 January) and then gradually decrease below threshold by the end of day two (30 January).

If you value what we do here, create 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