Solar activity - page 11

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Strong, long duration, solar flare measuring M7.3 erupted from Region 2036

A strong, long duration, solar flare measuring M7.3 erupted from Region 2036 on April 18, 2014. This event started at 12:31, peaked at 13:03 and ended at 13:20 UTC.R2 Moderate radio blackout threshold was reached at 12:55 UTC - limited black

April 18, 2014

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Geoeffective region erupts with moderately strong M1.0 solar flare

Moderately strong solar flare measuring M1.0 erupted from Region 2035 (S17E18, Fkc/beta-gamma) on April 16, 2014. This event started at 19:54, peaked at 19:59 and ended at 20:04 UTC. A Type II Radio Emission with estimated velocity of 1071 km/s was a

April 16, 2014

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Pair of coronal holes, old sunspot regions coming back to Earth side of the Sun

A coronal hole high-speed stream (CH HSS) from a pair of coronal holes straddling the Sun's equator is predicted to become geoeffective beginning around midday on April 12 with an increase in solar wind speed expected along with enhancements in the In

April 10, 2014

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Long duration M6.5 solar flare erupted from Region 2027

Strong, long duration, solar flare measuring M6.5 erupted from Region 2027 on April 2, 2014. The event started at 13:18, peaked at 14:05 and ended at 14:28 UTC. A Type II and IV Radio Emission with estimated velocity of 903 km/h were observed

April 02, 2014

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Moderately strong M1.4 solar flare erupted near the western limb

A moderately strong solar flare measuring M1.4 at its peak time erupted on March 31, 2014 from Region 2014. The event started at 07:20, peaked at 08:07, and ended at 08:18 UTC. A Type IV Radio Emission was registered beginning at 08:17 UTC.  Type IV

March 31, 2014

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Rare ripple in Earth's magnetic field occurred during yesterday's X1.0 solar flare

During yesterday's major X1.0 solar flare (17:35 - 17:54 UTC) a rare event called Magnetic crochet occurred. Magnetic crochet, also known as Solar Flare Effect, occurs during fast impulsive flares and is described as a ripple in

March 30, 2014

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Major solar flare measuring X1.0 erupted from Region 2017

Major solar flare measuring X1.0 erupted from Region 2017 on March 29, 2014. This event started on 17:35, peaked at 17:48 and ended at 17:54 UTC. Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point. Wide

March 29, 2014

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Region 2017 unleashed moderately strong M2.6 solar flare

Region 2017 unleashed a second moderately strong solar flare on March 28, 2014. This event peaked as M2.6 solar flare at 23:51 UTC, and like the previous one (M2.0), it was associated with Type II radiation sweep. Estimated speed of this event was 857

March 29, 2014

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Moderately strong M2.0 solar flare erupted from Region 2017

A moderately strong solar flare reaching M2.0 erupted from Region 2017 on March 28, 2014 at 19:18 UTC. A Type II radiation sweep with estimated velocity of 528 km/s was registered at 19:18 UTC. Type II emissions typically indicate a Coronal Mass Ejection is

March 28, 2014

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Glancing blow to Earth's magnetic field expected late on March 25

Active region 2014 (S14E20, Dsc/beta-gamma) produced a long duration C5 solar flare on March 23, 2014 at 03:48 UTC. This flare lasted several hours and thus produced energy equivalent to much stronger flares. A Coronal Mass Ejection (CME) associated with this event

March 24, 2014

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Moderately strong M1.7 solar flare, filament eruption - Earth directed Hyder flares possible

At 03:56 UTC today the Sun sent us its best equinox wishes with moderately strong M1.7 solar flare originating from Region 2010 (S15E27, Dac/beta). This was the largest event on the Sun in last 24 hours (by 12:30 UTC) and it was associated with a Type II

March 20, 2014

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Near X-class solar flare and geomagnetic storm - M9.3

Near X-class solar flare reaching M9.3 erupted from departing Sunspot 1996 on March 12, 2013 at 22:34 UTC. This decaying sunspot is located near eastern limb and generated CME was not geoeffective, however, it produced a R2 (Moderate) Solar Flare Radio Blackout

March 13, 2014

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Solar activity back to moderate levels, M2.5 from Region 1996

After major X4.9 solar flare that erupted on February 25 from Region 1990 [during its 3 rotation on the Earth side of the Sun] we almost had no day without a moderate eruption. Since then, solar observatories recorded 16 M-class solar flares ranging from M1.0 to M3.5. S

March 12, 2014

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Sunspot 1996 produced M3.5 solar flare

Active Region 1996, located in the northern hemisphere, produced moderate  M3.5 solar flare at 03:50 UTC on March 11, 2014. This active region continues to rotate closer towards the northwestwern limb.   SDO's AIA 304 and EVE with GOES X-ray flux

March 11, 2014

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Powerful X4.9 solar flare erupted from Sunspot 1990

Newly numbered Active Region 1990 produced powerful X4.9 solar flare at 00:49 UTC on February 25, 2014, making it the third largest X-flare event of the current solar cycle. This decaying sunspot is in fact old returning region previously numbered as AR 1967. This is

February 25, 2014

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Geomagnetic storming in progress, M3.0 solar flare from western limb

As forecasted yesterday Coronal Mass Ejection (CME) hit Earth's magnetic field around 03:00 UTC today. That's a second CME impact within 24 hours, and another round of auroras.  SWPC issued Geomagnetic K-index of 6 (G2 - Moderate) alert at 05:28

February 20, 2014

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Multiple CMEs observed from central region on the Sun

Solar activity was at moderate levels in last 24 hours (12:30 UTC). Region 1974 (S13W05, Fsc/beta-gamma-delta) continued to exhibit growth and separation in the intermediate spots, and was responsible for the majority of the flare activity throughout the

February 12, 2014