Solar and Aurora Activity Chat

[JeffC]

Adjusted flux 67.7

[SteveB]

12 days blank, 15 for 2020 65%

Solar flux 71

Thermosphere: 3.00

[JeffC]

Adjusted Flux 68.6

[SteveB]

13 days blank, 16 days for 2020 67%

Solar flux 71

Thermosphere: 2.98

[JeffC]

Adjusted flux 68.0

[JeffC]

Adjusted flux 69.6

[JeffC]

Adjusted flux 70.2

[Minus 10]

thermosphere 28.9 billion watts

meutron count 9.8% high

hp index 2 quiet

[JeffC]

Adjusted flux 72.4....tad higher!

[jonboy]

For the last 3 days sunspot number has been at 0 yet spotless days remain on 16 why?

[Yarmy]

21 minutes ago, jonboy said:

For the last 3 days sunspot number has been at 0 yet spotless days remain on 16 why?

There's been a sunspot group traversing the NH for the past couple of days:

 

Interestingly, it belongs to SC24. Life in the old dog yet.

[summer blizzard]

This suggests that this year will probably have similar activity to last year with a likely minimum  around May. 

[jonboy]

On 27/01/2020 at 10:16, Yarmy said:

There's been a sunspot group traversing the NH for the past couple of days:

 

Interestingly, it belongs to SC24. Life in the old dog yet.

But interestingly the sunspot number on each day has been 0 not 11 or 14 or any other number above the minimum number which I believe to be 11. Again the same applies today

[Yarmy]

51 minutes ago, jonboy said:

But interestingly the sunspot number on each day has been 0 not 11 or 14 or any other number above the minimum number which I believe to be 11. Again the same applies today

That's just Spaceweather's data feed screwing up. It's correct here:

 

...and the SIDC count here:

SILSO | World Data Center for the production, preservation and dissemination of the international sunspot number

SIDC.OMA.BE

---

World Data Center for the production, preservation and dissemination of the international sunspot number.

 

Edited January 28, 2020 by Yarmy
Edit: Corrected thumbnail image cache.

[Katrine Basso]

A SMALL CRACK IN EARTH'S MAGNETIC FIELD: Last night, a small crack opened in Earth's magnetic field. Solar wind poured in to fuel a quiet display of auroras over Canada. Catalin Tapardel sends this picture from Worsley, Alberta:

[JeffC]

Adjusted flux 72.0

[Katrine Basso]

A NEW TYPE OF AURORA--"THE DUNES": A new type of aurora is rippling across Arctic skies. Citizen scientists who discovered it nicknamed it "The Dunes" because of its resemblance to desert sand dunes. A paper published in the Jan. 28th issue of AGU Advances describes the new form and the unexpected physics that causes it.

[Kirkcaldy Weather]

 

[Polar Maritime]

Kp4 predicted, Aurora spotted already in the far North of Scootland.

Edited January 30, 2020 by Polar Maritime

[JeffC]

Adjusted flux 71.6

[karyo]

So far this year, the percentage of spotless days is 48%. Quite an upstick in activity and it is noticeable that the spots that appear tend to last several days or even a week as opposed to 2019 when they would disappear within a day or two.

[SteveB]

1 day blank, 17 for 2020 50%

Solar flux 72

Thermosphere: 3.12

[Minus 10]

thermosphere 31.2 billion watts

solar flux 72

kp index 3 quiet

[Katrine Basso]

Sunspot number: 0

Solar flux: 72

 

[JeffC]

Adjusted flux 68.8