Solar and Aurora Activity Chat

[JeffC]

Observed Flux Density 78.2

Adjusted Flux Density  77.5 = low

[Weather-history]

 

[JeffC]

Observed Flux Density 73.4

Adjusted Flux Density  72.7 = low

[JeffC]

Observed Flux Density 73.5

Adjusted Flux Density  72.9 = low

[Katrine Basso]

EQUINOX AURORAS: Today is the first day of northern Spring. Right on cue, Finland is turning green:

[JeffC]

Observed Flux Density 80.3

Adjusted Flux Density  79.7 = low

[Katrine Basso]

AURORAS IN THE USA: A solar wind stream hit Earth's magnetic field on March 20th, igniting a brief but strong G2-class geomagnetic storm. Bright auroras illuminated skies over Canada, then spilled across the border into the USA. "There was an explosion of colour," reports Greg Ash, who took this picture outside Duluth, Minnesota:

[JeffC]

Observed Flux Density 77.1

Adjusted Flux Density  76.5 = low

[Katrine Basso]

A WILD WEEKEND IN THE MAGNETOSPHERE: The first hours of northern Spring were eventful. First, a solar wind stream hit Earth's magnetic field. Next, a crack opened. Then, "an amazing display of auroras rocked our world," says Todd Salat, who watched the light show from Trapper Creek, Alaska:

[JeffC]

Observed Flux Density 80.4

Adjusted Flux Density  79.9 = low

[JeffC]

Observed Flux Density 81.8

Adjusted Flux Density  81.3 = low

[JeffC]

Observed Flux Density 78.8

Adjusted Flux Density  78.4 = low

[Katrine Basso]

AURORAS OVER AN ERUPTING VOLCANO: The last time a volcano erupted on Iceland's Reykjanes peninsula was almost 800 years ago. So consider this a 1-in-800-year shot: "On March 24th, I photographed the Geldingadalur volcano with auroras dancing overhead," reports Christopher Mathews.

[JeffC]

Observed Flux Density 79.6

Adjusted Flux Density  79.2 = low

[JeffC]

Observed Flux Density 80.4

Adjusted Flux Density  80.1 = low

[JeffC]

Observed Flux Density 75.1

Adjusted Flux Density  74.9 = low

[JeffC]

Observed Flux Density 74.4

Adjusted Flux Density  74.1 = low

[JeffC]

Observed Flux Density 79.5

Adjusted Flux Density  79.4 = low

[Katrine Basso]

Sunspot number: 0  Updated 31 Mar 2021

Spotless Days
Current Stretch: 1 day
2021 total: 33 days (37%)

Thermosphere Climate Index
today: 6.46x1010 W Cold
Max: 49.4x1010 W Hot (10/1957)
Min: 2.05x1010 W Cold (02/2009) Updated 30 Mar 2021

The Radio Sun
10.7 cm flux: 80 sfu Updated 31 Mar 2021

 

 

 

[JeffC]

Observed Flux Density 73.8

Adjusted Flux Density  72.7 = low

[SteveB]

2 days blank, 34 for 2021, 37%

Solsr flux 74

Thermosphere 6.50

[karyo]

Good to see a few spotless days at last!

[SteveB]

3 days blank,  35 for 2021 37%

Solar flux 78

Thermosphere: 6.60

[Katrine Basso]

AURORAS AND A VOLCANO: Iceland's Geldingadalur volcano is turning into a must-stop destination for aurora photographers. The latest photo combining geothermal and geomagnetic activity comes from Wioleta Gorecka standing on the banks of the iconic Blue Lagoon:

[JeffC]

Observed Flux Density 72.1

Adjusted Flux Density  72.0 = low