Even though the responsible sunspot was located behind the edge of the sun, enough radiation reached our planet to cause a strong shortwave radio blackout.
Tag: Sunspot
Two weeks in the life of a sunspot
Public Release: 4-Aug-2017 From Eurekalert NASA/Goddard Space Flight Center VIDEO: On July 5, 2017, the Solar Dynamics Observatory watched an active region — an area of intense and complex magnetic…
Study predicts the sun is headed for a Dalton-like solar minimum around 2050
Method uses the Ap geomagnetic index, which has been in a slump since October 2005: The Hockey Schtick tips us to a paper published today in Advances in Space Research…
Sunspot group AR1890 takes direct aim at earth
May produce a dangerous X-class flare that could directly impact Earth Steve Davidson writes: Right now, today, one of the largest sunspot groups of Cycle 24 – AR1890 – is…
October 2013 Sunspots: Largest jump in Solar cycle 24 so far
Looks like a double peak for cycle 24 is forming As many WUWT readers have noted in comments, October 2013 has been significantly more active than the previous several months,…
Like 'the pause' in surface temperatures, 'the slump' in solar activity continues
The NOAA Space Weather Prediction Center has updated their monthly graph set and it is becoming even more clear that we are past solar max, and that solar max has…
Solar cycle 24 continues the slump
Sunspot count is virtually unchanged from last month : It seems possible that we’ve seen the double peak, and it will be downhill after this.
The solar cycle is still slumping
It is looking more and more like a double sunspot peak for solar cycle 24. Sunspot count is down again: A similar drop occurred in radio flux.
Sun produces four X-class flares in two days
Above: note the four separate events in the last two days – from the WUWT Solar Page (From NASA’s Spaceweather.com) When the week began, the sun hadn’t unleashed an X-flare…
Solar cycle update – sun's magnetic activity still in a slump
Despite some small upticks on sunspot and 10.7cm radio activity, the magentic activity of the sun is still bumping along the bottom. A slight uptick was seen in sunspot count.…
December solar activity in a big slump
The December data from NOAA’s Space Weather Prediction Center is in, and it looks more and more like the peak of solar cycle 24 has been reached, and that we…
Counting Sunspots and Sunspot Inflation
Guest post by Dr. Leif Svalgaard The official sunspot number is issued by SIDC in Brussels http://sidc.be/sunspot-data/ . The [relative] sunspot number was introduced by Rudolf Wolf http://en.wikipedia.org/wiki/Rudolf_Wolf in the…
Solar cycle 24 continues weakly, perhaps weakest of the space-age
NOAA SWPC has updated their plot page of solar metrics, and the slump continues. At spaceweather.com Dr. Tony Phillips writes: SO THIS IS SOLAR MAXIMUM? Forecasters have long expected the…
The sun – still slumping
The latest solar cycle update graphs have been released by the NOAA SWPC today, and the anemic cycle 24 continues: The current count isn’t keeping up with the prediction line…
A quiet cue ball sun
Source: http://sdo.gsfc.nasa.gov/assets/img/latest/latest_4096_4500.jpg A couple of people have noticed (as did I) that the sun is essentially blank.
"firecracker" sunspot turning towards earth – possible large solar flares
Sunspot AR1476 may have some surprises for us in the coming days, and I hope it isn’t a Carrington type event. It has already launched two CME’s yesterday. From NASA’s Spaceweather.com:…
Potential for large solar flares and CME's may be with us again soon
Readers may recall my reports on the CME’s from massive sunspot group 1429, seen below. It seems the sunspot group continues to live, and has unleashed another massive Coronal Mass…
NOAA: Strong Solar Eruption; Earth-Directed CME Likely
An X-5 class solar flare just occurred from region 1429, the large active sunspot group seen below. NOAA Bulletin from the Space Weather Prediction Center: 2012-03-07 01:03 Strong Solar Eruption;…
First Estimate of Solar Cycle 25 Amplitude – may be the smallest in over 300 years
Guest post by David Archibald Predicting the amplitude of Solar Cycle 24 was a big business. Jan Janssens provides the most complete table of Solar Cycle 24 predictions at: http://users.telenet.be/j.janssens/SC24.html…
Solar cycle update: sunspots down, Ap index way down
The NOAA SWPC monthly solar cycle update has been published here, and after a big spike last month, the sunspot count is down again. There’s an even bigger drop though…
Solar activity on the upswing, big sunspot rotating into view is producing x-class solar flares. Large CME expected soon, may hit earth.
From Spaceweather.com: New sunspot 1302 has already produced two X-flares(X1.4 on Sept. 22nd and X1.9 on Sept. 24th), can another be far behind? NOAA forecasters put the 24-hour probability at…
Easterbrook on the potential demise of sunspots
THE DEMISE OF SUNSPOTS—DEEP COOLING AHEAD? Don J. Easterbrook, Professor of Geology, Western Washington University, Bellingham, WA The three studies released by NSO’s Solar Synoptic Network this week, predicting the…
BREAKING – major AAS solar announcement: Sun's Fading Spots Signal Big Drop in Solar Activity
“If we are right, this could be the last solar maximum we’ll see for a few decades,” Hill said. “That would affect everything from space exploration to Earth’s climate.” Update:…
The smallest sunspot cycle in two hundred years
I missed this earlier this week from NASA, I got a bit distracted with other things. Sixty two – that’s the new number from Hathaway on April 4th, have a…
You must be logged in to post a comment.