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CHANCE OF STORMS TODAY: NOAA forecasters estimate a 45% chance of polar geomagnetic storms on Feb. 2nd in response to a glancing blow from a CME. High-latitude sky watchers should be alert for auroras on Super Bowl Sunday. Aurora alerts: text, voice
BIG SUNSPOTS FACE EARTH: A pair of large sunspots is directly facing Earth. The larger of the two, AR1967, has a 'delta-class' magnetic field that harbors energy for powerful solar flares. NASA's Solar Dynamics Observatory photographed the behemoth during the early hours of Feb. 2nd:
AR1967 is wider than the planet Jupiter and its primary dark cores are big enough to swallow Earth many times over. The scale of the sunspot makes it an easy target for backyard solar telescopes. As shown in the gallery, astronomers around the world are snapping pictures.
The active region is already crackling with M-class solar flares. NOAA forecasters estimate a 15% chance of even stronger X-flares during the next 24 hours. Any eruptions will be squarely Earth directed. Solar flare alerts: text, voice
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Solar wind
speed: 379.9 km/sec
density: 1.1 protons/cm3
explanation | more data
Updated: Today at 1756 UT
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X-ray Solar Flares
6-hr max: M1 1406 UT Feb02
24-hr: M4 0931 UT Feb02
explanation | more data
Updated: Today at: 1800 UT
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Daily Sun: 02 Feb 14
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Sunspot AR1967 has a 'beta-gamma-delta' magnetic field that harbors energy for X-class solar flares. Credit: SDO/HMI
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Sunspot number: 147
What is the sunspot number?
Updated 01 Feb 2014
Spotless Days
Current Stretch: 0 days
2014 total: 0 days (0%)
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%)
Update 02 Feb 2014
The Radio Sun
10.7 cm flux: 166 sfu
explanation | more data
Updated 02 Feb 2014
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Current Auroral Oval:
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Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
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Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 3 quiet
explanation | more data
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Interplanetary Mag. Field
Btotal: 4.8 nT
Bz: 2.9 nT south
explanation | more data
Updated: Today at 1756 UT
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Coronal Holes: 02 Feb 14
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There are no large coronal holes on the Earthside of the sun. Credit: SDO/AIA.
