Geomagnetic storm subsiding, expecting more CMEs

Geomagnetic storm subsiding, expecting more CMEs

The first of several CMEs en route to Earth struck our planet's magnetic field on Sept. 9th around 1130UT. The impact sparked a strong (Kp=7) geomagnetic storm, which is now subsiding. Last night Northern Lights were spotted in the United States as far south as WashingtonWisconsinMichigan,VermontMontanaMaine and North Dakota. More geomagnetic activity could be in the offing as one or two more CMEs approach. (SpaceWeather)

Solar wind
speed: 555.8 km/sec
density: 0.7 protons/cm3


The Radio Sun
10.7 cm flux: 112 sfu


Planetary K-index
Now: Kp= 3 quiet
24-hr max: Kp= 5 storm 



A short lived moderate geomagnetic storm took place on Friday due to a incoming CME shock just after 11:00 UTC. Minor storm levels did persist overnight and Aurora was spotted in northern parts of Canada.

Just before 14:00 UTC Saturday, the solar wind jumped from 460 km/s to 520 km/s. Keep an eye on the ACE Spacecraft data for any further increases that may contribute to minor geomagnetic activity. (SolarHam)

NOAA Scales Activity


Range 1 (minor) to 5 (extreme)

NOAA Scale


Geomagnetic Storms *

Solar Radiation Storms

Radio Blackouts

Alerts / Bulletins
Latest Alert: Sep 10 2242 UTC ALERT: Geomagnetic K-index of 5
Last Advisory Bulletin: Sep 06 2344 UTC: Strong Radio Blackout Event



The Farside of the Sun has been very active and late Thursday night a large Solar Flare triggered a bright Coronal Mass Ejection. I created a movie below showing the Flare and CME. This was most likely an X-Class event.

Register/become a supporter

Support us AD-FREE

Your support is crucial for our survival. It makes this project fully self-sustainable and keeps us independent and focused on the content we love to create and share. 

Monthly subscription

Subscription options

Yearly subscription

Subscription options

You'll receive your ad-free account for 20x faster browsing experience, clean interface without any distractions, ability to post comments without prior editorial check, all our desktop and mobile applications (current and upcoming) ad-free and with the full set of features available, a direct line of communication and much more. See all options.

Comments

No comments yet. Why don't you post the first comment?

Post a comment

Your name: *

Your email address: *

Comment text: *

The image that appears on your comment is your Gravatar