Coronal hole faces Earth

Monday, 11 March 2019 18:54 UTC

Coronal hole faces Earth

We are still waiting to see what the two solar flares from the past few days will cause for activity at Earth but yet another solar feature throws itself in the mix today: a coronal hole solar wind stream!

This coronal hole looks to be an extension of the southern hemisphere polar coronal hole. This coronal hole is poorly defined and fairly narrow but does stretch all the way from the southern polar coronal hole to the north and actually crosses the solar equator. Compared to the last rotation we actually see that this coronal hole developed during the past few weeks.

A short living high speed solar wind stream from this coronal hole could arrive on our planet either late on 13 March (Wednesday) or early on 14 March (Thursday). It is hard to say if the coronal mass ejections launched a few days ago will have any effect on this solar wind stream but we doubt they will. Be sure to read our previous news item for more information on these events. Active geomagnetic conditions (Kp4) will be possible when the solar wind stream arrives.

Any mentioned solar flare in this article has a scaling factor applied by the Space Weather Prediction Center (SWPC), the reported solar flares are 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.

Thank you for reading this article! Did you have any trouble with the technical terms used in this article? Our help section is the place to be where you can find in-depth articles, a FAQ and a list with common abbreviations. Still puzzled? Just post on our forum where we will help you the best we can! Never want to miss out on a space weather event or one of our news articles again? Subscribe to our mailing list, follow us on Twitter and Facebook and download the SpaceWeatherLive app for Android and iOS!

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!

No Ads on SWL Pro!
No Ads on SWL Pro! Subscriptions
Donations
Support SpaceWeatherLive.com! Donate
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2026/04/24X2.5
Last M-flare2026/05/17M1.4
Last geomagnetic storm2026/05/16Kp6- (G2)
Spotless days
Last 365 days3 days
20263 days (2%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
April 202679.3 -6.6
May 202690.4 +11.1
Last 30 days99.3 +8.3

This day in history*

Solar flares
12002X3.07
22001M9.22
32023M8.96
42002M7.2
52002M6.81
DstG
12005-83G1
21981-69G2
31990-59G1
42023-57G2
52024-43
*since 1994

Aurora on this day in history

No observations submitted for this day in history. If you've observed the aurora and you have some amazing photos to show off, submit your observations now!
Submit your aurora observation

Social networks