~SPace Weather Upate Sun Gets Back to Work~

Submitted by Lia on Mon, 02/06/2012 - 10:07
   
 

BACK TO WORK (UPDATED): After a quiet weekend with no flares of any significance, the sun went back to work on Monday morning and launched a bright coronal mass ejection (CME) into space. The Solar and Heliospheric Observatory recorded the expanding cloud during the early hours of Feb. 6th:

 

 

Update: New images from the Solar Dynamics Observatory (SDO) show that this was a frontside event. The explosion occured when a magnetic filament draped over the sun's northeastern limb rose up and snapped. An extreme UV movie from SDO shows the structure lifting off. Solar flare alerts: text, voice.

 

AURORA WATCH: Earth passed through a minor solar wind stream on Feb. 4-5. The weak impact of the solar wind was just enough to spark auroras around parts of the Arctic Circle. Frank Olsen sends this 20-second exposure from the waterfront outside Tromsø, Norway:

"Despite bright moonlight and low solar activity,

 

there were some great auroras last night," says Olsen.

The effects of the solar wind are subsiding, and the auroras might disappear into the moonlight for the next few nights. Geomagnetic activity is expected to hover at low levels for the next 48 hours. Aurora alerts: text, voice.

more images: from Oivind Toien of Fairbanks, Alaska; from Fredrik Broms of Kvaløya, Norway

 

 

Solar wind
speed: 413.7 km/sec
density: 0.1 protons/cm3

explanation | more data
Updated: Today at 1756 UT

X-ray Solar Flares
6-hr max: C1
1727 UT Feb06
24-hr: C1 1727 UT Feb06
explanation | more data
Updated: Today at: 1800 UT

Daily Sun: 06 Feb 12

A new cluster of spots is growing just north of AR1410. Credit: SDO/HMI

Sunspot number: 37
What is the sunspot number?
Updated 05 Feb 2012

Spotless Days
Current Stretch: 0 days
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

Updated 05 Feb 2012

The Radio Sun
10.7 cm flux: 103 sfu

explanation | more data
Updated 05 Feb 2012

Current Auroral Oval:

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

Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 2
quiet
explanation | more data

Interplanetary Mag. Field
Btotal: 6.9 nT
Bz: 3.3 nT south

explanation | more data
Updated: Today at 1758 UT

Coronal Holes: 06 Feb 12

Solar wind flowing from this coronal hole should reach Earth on or about Feb. 10th. Credit: SDO/AIA.

 

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