~ Space Weather Update~ Early Morning~ FILAMENT ERUPTION:

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TRIPLE CONJUNCTION OF PLANETS: Venus, Jupiter, and Mercury are converging for a beautiful sunset conjunction. The show begins on May 11th and climaxes two weeks later. Get the full story and a video from Science@NASA.

FILAMENT ERUPTION: An unstable filament of magnetism on the Earthside of the sun erupted during the early hours of May 12th. NASA's Solar Dynamics Observatory recorded the blast:

 

 

The erupting filament did not spark a significant solar flare (that is, there was no strong flash of X-radiation), but it did hurl part of itself into space. SOHO photographed a bright coronal mass ejection (CME) emerging from the blast site: movie. The CME could deliver a slight, glancing blow to Earth's magnetic field on May 15th. Aurora alerts: text, voice.

Realtime Space Weather Photo Gallery

FANTASTIC SUNRISE: The sunrise over Australia on Friday, May 10th, was a little ... unusual. Tony O'Brien photographed what happened from a spot south of the town of Newman:

The sun had turned into a "ring of fire" during an annular solar eclipse. At the moment of O'Brien's snapshot, more than 95% of the sun's diameter was covered by the Moon.

"I travelled a full day to see this annular eclipse--and it was worth the trip," he says. "It was a fantastic event."

In an annular eclipse the Moon is not quite big enough to cover the entire solar disk. A blinding ring of solar fire juts out around the Moon, overwhelming the sun's delicate corona. It may not be the same as totality, but annularity has a charm and beauty all its own. Browse the gallery for more images from the eclipse zone.


Solar wind
speed: 347.2 km/sec
density: 1.6 protons/cm3

explanation | more data
Updated: Today at 1826 UT


X-ray Solar Flares
6-hr max: C2
1601 UT May12
24-hr: C2 0437 UT May12
explanation | more data
Updated: Today at: 1800 UT



Daily Sun: 12 May 13



Emerging sunspots AR1745 and AR1746 pose a threat for M-class solar flares. Credit: SDO/HMI



Sunspot number: 145
What is the sunspot number?
Updated 12 May 2013

Spotless Days
Current Stretch: 0 days
2013 total: 0 days (0%)
2012 total: 0 days (0%)
2011 total: 2 days (<1%)
2010 total: 51 days (14%)
2009 total: 260 days (71%)
Since 2004: 821 days
Typical Solar Min: 486 days

Update 12 May 2013

The Radio Sun
10.7 cm flux: 137 sfu

explanation | more data
Updated 12 May 2013



Current Auroral Oval:


Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES



Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 2
quiet
explanation | more data


Interplanetary Mag. Field
Btotal: 4.2 nT
Bz: 1.0 nT north

explanation | more data
Updated: Today at 1827 UT



Coronal Holes: 12 May 13



There are no large coronal holes on the Earthside of the sun. Credit: SDO/AIA.

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