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01. X6.9
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The Sun Today : Updated February 21, 2017

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M-Class: 05%
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Geomag. Storm    NO
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Status
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Status

3-Day Geomagnetic Forecast [Details]
February 21
February 22
February 23
3 (G0)
Max Kp
4 (G0)
Max Kp
5 (G1)
Max Kp
Prob-M 05%
Prob-H 30%
Prob-M 15%
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Latest Space Weather News and Updates
February 20, 2017 @ 20:00 UTC
New Active Region / Prominence Eruption
Good afternoon. Solar activity continues at very low levels, although there is now an increased chance for minor C-Flares and a small chance for an isolated moderate M-Flare. This thanks to the addition of newly numbered region 2638, now in view off the northeast limb. More updates to follow regarding this active region whenever necessary.

Also of interest today, a prominence eruption just behind the northeast limb. The towering stream of plasma was observed by the Solar Dynamics Observatory (SDO) beginning at 16:30 UTC (Feb 20). Because the event was not facing Earth, it should have no impact on our planet.

Stay tuned to SolarHam.com for the most up to date spaceweather news, data and imagery.

February 19, 2017 @ 11:55 UTC
Solar Update
Good evening. Solar activity remains very low, although there may be an increased chance for minor C-Flares with returning regions now turning into view off the east limb.

Geomagnetic activity is still somewhat elevated as a coronal hole stream remains geoeffective. Sky watchers at higher latitudes should continue to be on the lookout for visual aurora.

A pair of coronal holes stretching across the southern hemisphere were combined into one CH designation (63). The trailing section of this hole is situated at middle latitude and will become geoeffective after February 23rd. Another increase in geomagnetic activity will be possible at higher latitudes. Image below courtesy of SDO/AIA.

February 17, 2017 @ 11:10 UTC
Aurora Watch
An elevated solar wind stream flowing from an Earth facing coronal hole continues to brush past our planet. A minor (G1) geomagnetic storm watch is currently in effect for the next few hours. Currently a Kp of 4 is being observed. Visible aurora is likely at higher latitudes while it is still dark outside.

The image below was captured early Friday morning by Sacha Layos up in Alaska. Great job and thanks for sharing!


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Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Weather Prediction Center.
UPDATED 2017 February 21 1230 UTC

.24 hr Summary...
Solar activity was very low. Region 2638 (N18E52, Cao/beta) was stable
and produced occasional B-class flares, the largest was a B7 at 20/1425
UTC. Region 2637 (S04E41) decayed to a plage region and was inactive.

.Forecast...
Solar activity is expected to remain very low, with a chance for C-class
flares all three days (21-23 Feb).

[Report of Solar-Geophysical Activity]

NOAA SUNSPOT SUMMARY | SolarHam Sunspot Summary

A - Alpha (single polarity spot).
B - Beta (bipolar spot configuration).
G - Gamma (atypical mixture of polarities).
BG - Beta-Gamma (mixture of polarities in a dominantly bipolar configuration).
D - Delta (opposite polarity umbrae within single penumbra).
BD - Beta with a Delta configuration.
BGD - Beta-Gamma with a Delta configuration.

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