Author Topic: BAA Aurora Alerts  (Read 638 times)

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Rick

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BAA Aurora Alerts
« on: Sep 26, 2016, 07:57:47 »
[BAA-ebulletin 00936] Aurora alert
(c) 2016 British Astronomical Association    http://www.britastro.org/

A coronal hole that covers the left third of the sun has started to impact the earth. The field is unstable but with some neg. I have a weak arc 5dg high & 30dg wide here on the Moray coast and http://www.shetland.org/60n/webcams/cliff-cam-3 and 1 are showing to 10dg high (21.10UT 25th Sep)

There is a good chance this could be seen in Northern England or even further south as it builds, and it will probably last 3 to 4 days.

Any reports please to - sandra-b at hotmail co uk

Cheers & clear skies
Sandra Brantingham
Aurora and NLC director

Rick

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[BAA-ebulletin 00942] aurora alert
« Reply #1 on: Oct 14, 2016, 08:44:57 »
[BAA-ebulletin 00942] aurora alert
(c) 2016 British Astronomical Association    http://www.britastro.org/

Aurora Alert

A coronal mass ejection struck earth a glancing blow just after 21:00UT 12th October 2016.

The field was positive at first but has changed to negative and that gives a very strong possibility of auroras tonight (13th October 2016).

It could be visible as far south as southern England

I have thick cloud cover so no conformation.

Any reports please to - sandra-b at hotmail co uk

Cheers & clear skies

Sandra Brantingham
Aurora and NLC director

Rick

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[BAA-ebulletin 00943] Aurora Alert level G3
« Reply #2 on: Oct 25, 2016, 22:47:47 »
[BAA-ebulletin 00943] Aurora Alert level G3
(c) 2016 British Astronomical Association    http://www.britastro.org/

A coronal hole has started to impact earth from 09:30UT 25th October 2016.

The field is unstable both positive and negative however the wind speed has increased to over 750kps. That gives a very strong possibility of auroras tonight (25th October 2016) and for next 3 or 4 days.

It could be visible as far south as southern England

I have thick cloud cover so no conformation.

Any reports please to - sandra-b at hotmail co uk

Cheers & clear skies

Sandra Brantingham
Aurora and NLC director

Rick

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Re: [BAA-ebulletin 00936] Aurora alert
« Reply #3 on: Oct 26, 2016, 19:23:07 »
The Sun's still throwing stuff our way, so if the sky's clear...

Rick

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[BAA-ebulletin 00946] Aurora Alert
« Reply #4 on: Nov 24, 2016, 22:32:11 »
[BAA-ebulletin 00946] Aurora Alert
(c) 2016 British Astronomical Association    http://www.britastro.org/

A coronal hole has started to impact earth from 04:30UT 24th November 2016.

The field is unstable both positive and negative however the wind speed has increased to over 530kps.

I have a green arc, 90dg wide & 10dg high from the Moray coast at 2130UT.

It will be visible in northern Scotland, but could go further south.

Any reports please to - sandra-b at hotmail co uk

Cheers & clear skies
Sandra Brantingham
Aurora and NLC director

Rick

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[BAA-ebulletin 00965] Aurora Alert
« Reply #5 on: Mar 21, 2017, 23:01:50 »
[BAA-ebulletin 00965] Aurora Alert
(c) 2017 British Astronomical Association    http://www.britastro.org/

A coronal hole has started to impact earth from 06:00UT 21st March 2017.

The field is unstable both positive and negative however the wind speed has increased to over 690kps.

It may only affect Northern Scotland but it could go further if the field swings negative. I have cloud cover on the Moray coast but it has been seen in Dundee. It is showing on cliff cams 1 & 3 http://www.shetland.org/60n/webcams/cliff-cam-3

Any reports please to - sandra-b at hotmail co uk

Sandra Brantingham
Aurora and NLC Director

Rick

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[BAA-ebulletin 00969] Aurora Alert
« Reply #6 on: Mar 27, 2017, 21:00:12 »
[BAA-ebulletin 00969] Aurora Alert
(c) 2017 British Astronomical Association    http://www.britastro.org/

A coronal hole has started to impact earth from 02:00UT 27th March 2017.

The field is unstable both positive and negative however the wind speed has increased to over 630kps and is classified as a G2 storm.

It may only affect Northern Scotland but it could go further if the field swings negative. Keep looking north as it gets dark and also keep a watch on http://www.shetland.org/60n/webcams/cliff-cam-3

Any reports please to - sandra-b at hotmail co uk

Sandra Brantingham
Aurora and NLC Director