Tag Archives: coronal hole

Strong G3 Aurora Lights The Sky May 6-8 2016

Share Button

Northern Lights Now – Geomagnetic storming resulting from a coronal hole high speed stream pushed the alert level to G3 (KP=7) this Mother’s Day weekend treating aurora hunters around the world to a beautiful display. The active period produced one period of G1 storming on May 6, then a much longer and stronger period lasting 21 hours started early on May 8 GMT. Take a look at the 3-hour measured KP graph from the SQPC in Boulder:

Geomagnetic activity as measured by the SWPC in Boulder during the May 6-8 storm
Geomagnetic activity as measured by the SWPC in Boulder during the May 6-8 storm

Brian Drourr, a Vermont photographer and friend of NLN, was taking this storm in from the Algonquin Radio Observatory in Ontario, Canada, when he captured one of the most iconic images of the active period. That photo, with the ARO in the foreground and stunning green and purple northern lights in the background, is the feature image for this post, and we thank Brian for allowing us to share it with you. You can find more information about Brian and his photos on his Facebook page

Aurora behind the ARO in Oontario Canada by Brian Druorr on May 7, 2016
Aurora behind the ARO in Oontario Canada by Brian Druorr on May 7, 2016

The Visible Infrared Imager Radiometer Suite (VIIRS) is a satellite that is capable of capturing the Aurora as it dances from space. This image shows the Mother’s day Northern Lights dancing over Central Canada and the upper midwest. If you look closely (click on the image to zoom) you will be able to see the Fort Macmurry fires in Alberta along the Saskatchewan boarder:

Mother's Day Aurora Visible on VIIRS Satellite imagery

Here are some more great photos that came in from Twitter over the last couple days:

From Scott Rock over Lake Heron:

Some aurora with star trails from Laura Duchesne

A few Beams from North Umberland by Own Humphreys:

And Finally A time Lapse from Dave Patrick:

Happy hunting!

SWPC Issues G1 Storm Watch for April 30, 2016

Share Button

Northern Lights Now – The Space Weather Prediction Center has issued a G1 Geomagnetic storm watch for potential aurora on April 30. This means aurora may be visible for northern latitudes late on the 29th for North American viewers. The predicted display is due to the passing of high speed solar wind from a coronal hole. As of this writing, the period of expected activity is from around mightnight GMT until 9am GMT (or about sunset to early morning on the East Coast of North America). Here is the NLN’s auroraCast:

NLN Clock AuroraCast shows A period of expect G1 Storming early on April 30
NLN Clock AuroraCast shows A period of expect G1 Storming early on April 30

Two days of G1 storming Expected April 13 and 14

Share Button

Northern Lights Now – A large coronal hole was pointed directly towards Earth on April 9th and 10th. The high speed solar wind from that exposed area is should impact Earth on April 13 and 14. Space weather forecasters are expecting two consecutive days of geomagnetic storming. That could bring several opportunities for Aurora hunters to experience the Northern and Southern Lights. Here’s an image from SDO from late on April 9 in AIA 211, a wavelength that makes it easy to see coronal holes:

Large Earth directed Coronal hole may bring Aurora on April 13 and 14.
Large Earth directed Coronal hole may bring Aurora on April 13 and 14.

SWPC is calling for two periods of active Aurora (G1 level storming). The first period is early on April 13 and the second is Early on April 14. For North American Aurora viewers this is in prime evening viewing time. Europeans viewers will have to stay up past midnight. See the NLN Aurora cast for April 13 and 14. The data behind this infographic comes from the Space Weather Prediction Center in Boulder Colorado

NLN AuroraCast for April 13 and 14 shows when to expect G1 storming
NLN AuroraCast for April 13 and 14 shows when to expect G1 storming

Note: It is not an error that both days have the same profile throughout the day. The is what the forecasting models have predicted.

Happy Hunting!