Baton Rouge Astronomical Society Forum

It is currently September 25th, 2017, 6:32 am

All times are UTC - 6 hours [ DST ]




Post new topic Reply to topic  [ 18 posts ]  Go to page Previous  1, 2
Author Message
PostPosted: April 24th, 2017, 12:24 pm 
Offline

Joined: October 12th, 2009, 3:28 pm
Posts: 3704
Location: Baton Rouge, LA
Tuesday, 25 April: G1
Wednesday, 26 April: G1


Nothing with a solar viewer, but the Sunspotter easily showed ARs 2651 and 2653 and just barely 2652. 48x magnification in the filtered Orion 10" Dobsonian showed the three specks that constitute 2652 quite clearly.

More information:
http://www.swpc.noaa.gov/news/g1-minor-geomagnetic-storm-watch-issued-24-26-april

Current View of the Sun:
http://www.spaceweather.com/images2017/24apr17/hmi1898.gif


Top
 Profile  
 
PostPosted: May 15th, 2017, 3:11 pm 
Offline

Joined: October 12th, 2009, 3:28 pm
Posts: 3704
Location: Baton Rouge, LA
Tuesday, 16 May: G1
Wednesday, 17 May: G2


Tony Phillips is quoting NOAA as saying there is a forty percent chance of geomagnetic storms this week. Gaseous material streaming from a coronal hole should hit our magnetic field tomorrow. As of this hour, there are no corresponding Active Regions.

More information:
http://www.swpc.noaa.gov/news/g1-minor-watch-issued-16-may-g2-moderate-issued-17-may

Current View of the Sun:
http://www.spaceweather.com/images2017/15may17/hmi1898.gif


Top
 Profile  
 
PostPosted: July 1st, 2017, 3:14 pm 
Offline

Joined: October 12th, 2009, 3:28 pm
Posts: 3704
Location: Baton Rouge, LA
Sunday 2 July: G1
Monday 3 July: G1


A coronal mass ejection reached Earth about three hours ago--a full day ahead of time. The CME was quite weak, so if it does create any geomagnetic storm conditions, it won't be for a day or two.

More information:
http://www.swpc.noaa.gov/news/g1-minor-geomagnetic-storm-watch-effect-02-03-july-2017

Current View of the Sun:
http://www.spaceweather.com/images2017/01jul17/hmi1898.gif


Top
 Profile  
 
PostPosted: August 2nd, 2017, 2:25 pm 
Offline

Joined: October 12th, 2009, 3:28 pm
Posts: 3704
Location: Baton Rouge, LA
Friday, 4 August: G2

Active Region 2665 is now rounding the limb of the Sun, in view for those with clear skies--which we do not at this time. The NOAA forecast for 4pm today...
precipitation potential, 43%
sky cover, 91%
relative humidity, 59%
temperature, 29˚C
heat index, 32˚C
surface wind, E 10 km/h

...and Danko states it is "too cloudy to forecast" (0 out of 5) both the transparency and the seeing, leading to a BAD rating. Oh, well.

Current View of the Sun:
http://www.spaceweather.com/images2017/02aug17/hmi1898.gif


Top
 Profile  
 
PostPosted: September 1st, 2017, 2:45 pm 
Offline

Joined: October 12th, 2009, 3:28 pm
Posts: 3704
Location: Baton Rouge, LA
Friday, 1 September: G1

There are four Active Regions on the Sun right now: 2672 (hard to see and which we're about to lose due to rotation), 2675 (two good-sized spots), 2673 (one spot slightly larger than each of 2675's) and 2674 (two quite large spots with ten attendant spotlets chaining between them).

More information:
http://www.swpc.noaa.gov/news/g1-minor-watch-31-august-and-1-september-utc-days

Current View of the Sun:
http://www.spaceweather.com/images2017/01sep17/hmi1898.gif


Top
 Profile  
 
PostPosted: September 6th, 2017, 5:43 pm 
Offline

Joined: October 12th, 2009, 3:28 pm
Posts: 3704
Location: Baton Rouge, LA
Wednesday 6 September: G3
Thursday 7 September: G3


Active Region 2673 has hurled a coronal mass ejection toward Earth. This may result in G2 or G3 conditions this evening or tomorrow. It is possible that at certain latitudes false alarms may be triggered. HF radio may also be intermittent.

More information:
http://www.swpc.noaa.gov/news/g3-watch-6-and-7-september-2017-due-cme-arrival
http://www.skyandtelescope.com/astronomy-blogs/explore-night-bob-king/giant-sunspots-flares-presage-arrival-of-solar-storm/

Current View of the Sun:
http://www.spaceweather.com/images2017/06sep17/hmi1898.gif


Top
 Profile  
 
PostPosted: September 11th, 2017, 5:52 pm 
Offline

Joined: October 12th, 2009, 3:28 pm
Posts: 3704
Location: Baton Rouge, LA
Wednesday 13 September: G2
Thursday 14 September: G1


This storming, if it occurs, is likely to be caused by a positive polarity coronal hole located between Active Regions 2678 and 2680. AR2680 has a noticeable-sized sunspot associated with it.

More information:
http://www.swpc.noaa.gov/news/g2-watch-issued-13-september-g1-watch-issued-14-september

Current View of the Sun:
http://www.spaceweather.com/images2017/11sep17/hmi1898.gif


Top
 Profile  
 
PostPosted: September 18th, 2017, 11:30 am 
Offline

Joined: October 12th, 2009, 3:28 pm
Posts: 3704
Location: Baton Rouge, LA
Monday 18 September: G1

This storming has just finished, but was very recent. The alert itself came at ~3:56am CDT. I do not see any more geomagnetic storm, radio blackout or solar radiation alerts for the next couple of days.

More information:
http://www.swpc.noaa.gov/news/g1-minor-geomagnetic-storm-conditions-observed-5


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 18 posts ]  Go to page Previous  1, 2

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group