· ·

Incoming coronal mass ejection

incoming-coronal-mass-ejection-2

As predicted by analysts at the Goddard Space Weather Lab, a coronal mass ejection (CME) hit Earth’s magnetic field at ~03:30 UT on Sept 17th. The impact was not strong. Nevertheless, the arrival of the CME could spark geomagnetic activity around the Arctic Circle. High-latitude sky watchers should be alert for auroras. (SpaceWeather)

Solar wind
speed: 511.5 km/sec
density: 1.1 protons/cm3

The Radio Sun
10.7 cm flux: 143 sfu

Planetary K-index
Now: Kp= 0 quiet
24-hr max: Kp= 1 quiet

Interplanetary Mag. Field
Btotal10.5 nT
Bz7.0 nT north 


C-Class flare activity continues on Friday around Sunspots 1290, 1295, 1296 and 1297. There will remain the chance for M-Class flares throughout the weekend. A new Sunspot group is forming in the southern hemisphere and was numbered 1299 on Friday.

Again because of the amount of sunspot regions on the face of the sun, the official Sunspot number count for Sept 16 is 173. This is another new record for Cycle 24 . Before the past few days, the previous mark of 153 was set on 4/13/2011.

Minor geomagnetic storming may be possible within 48 hours due to a faint incoming Coronal Mass Ejection (CME) that took place late Wednesday night. Be on the lookout for Aurora if you are high in latitude. (SolarHam)

NOAA/SWPC Alerts / Bulletins
Latest Alert: Sep 17 0515 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Last Advisory Bulletin: None in last 7 days.

 

 Significant geomagnetic storming is not expected but periods reaching the G1 (Minor) level are possible. Follow this link for more information on the NOAA Geomagnetic Storm Scales and the associated impacts. (NOAA/SWPC)

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.