Articles tagged "solar cycle 24"

solar cycle declining more quickly than  forecast 2018

SWPC: Solar Cycle 24 declining more quickly than forecast

Current solar cycle 24 is declining more quickly than forecast, NOAA's Space Weather Prediction Center (SWPC) reports. The smoothed, predicted sunspot number for April to May 2018 is about 15. However, the actual monthly values have been lower, they say. Will...

April 27, 2018

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The weak solar cycle and its consequences

At this year's Fall Meeting of American Geophysical Union, held in San Francisco (December 9 - 13), several scientists made a presentation on weak Solar Cycle 24 and its consequences. They agree that the current solar cycle is on track to be

December 12, 2013

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Largest ever recorded solar flare in history - The "X-Whatever" mega flare

On this day, exactly 10 years ago, the largest ever recorded solar flare in history erupted from Sun's western limb. This mega flare started its historic eruption at 19:29 UTC from Active Region 10486 and peaked around 19:50 UTC. Ionizing radiation from the

November 04, 2013

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Massive sunspot complex on southern hemisphere indicates a possible double peaked solar maximum

A massive array of sunspots AR1785 - 1787 has rotated over the Sun's southeastern limb and will position itself directly facing Earth in the coming days. This sunspot complex is one of the largest in Solar Cycle 24 and is located in southern

July 05, 2013

Progressing toward solar max

The effects of solar variability on Earth's climate

A new report issued by the National Research Council (NRC), "The Effects of Solar Variability on Earth's Climate," lays out some of the surprisingly complex ways that solar activity can make itself felt on our planet.The luminosity of our own sun varies a 0.1% over

January 10, 2013

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Our magnificent Sun - Solar cycle 24

The solar cycle (or solar magnetic activity cycle) is the periodic change in the sun's activity (including changes in the levels of solar radiation and ejection of solar material) and appearance (visible in changes in the number of sunspots, flares, and other

November 30, 2012

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Solar cycle 24 on its way

Science has only just begun to understand how cyclical changes in the Sun effect Earth's weather and climate. But the more technological human society grows, the more vulnerable we may become.Activity on the Sun is due to reach its peak around early 2014, so expect

October 28, 2011

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New sunspot record

The official Sunspot number for Oct 21,2011 is 207. This is a new record for Solar Cycle 24. Despite the amount of Sunspots, only low level M-Class flares have taken place thus far. This could soon change. Solar activity has been moderate with low level

October 22, 2011

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Active sunspot 1263 has left the Earthside of the sun

Active sunspot 1263, which just two days ago produced the most powerful solar flare of the new Solar Cycle (an X7), has left the Earthside of the sun. It is now beginning a two week transit across the solar farside. We can still see signs of its ongoing activity,

August 12, 2011

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Largest flare of Solar Cycle 24 occurred today - Non-Earth directed X6.9

This morning at 08:05 UTC, sunspot 1263 produced an X6.9 solar flare, the third X-flare of new Solar Cycle 24 and the most powerful so far. NASA's Solar Dynamics Observatory captured the explosion's extreme ultraviolet flash:The brunt of the ex

August 09, 2011

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Sunspot 1236 harbors energy for M-class solar flares

The magnetic field of sunspot 1236 harbors energy for M-class solar flares. NOAA forecasters estimate a 25% chance of such an eruption during the next 24 hrs.

June 16, 2011

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A huge filament of magnetism and hot plasma blasted off the sun's southwestern limb

A huge filament of magnetism and hot plasma blasted off the sun's southwestern limb on March 19th around 1200 UT. The eruption was not Earth-directed, but it did attract plenty of attention on our planet. Many amateur astronomers in Europe witnessed the blast and said

March 20, 2011