Halloween Storms of 2003 Still the Scariest

October 29, 2008 By Laura Layton
This spooky looking aurora was seen near Nome, Alaska in October of 2003, just days before Halloween. Credit: Spaceweather.com

(PhysOrg.com) -- By the eerie light of a Halloween moon, while a chilly wind blows autumn-dry leaves askitter on bare and fingered branches, scary things can happen. Blood-sucking bats, creepy-crawly spiders, and a bevy of Halloween horrors give a fright on October 31. But did you know the weeks surrounding this All Hallow’s Eve mark a haunting milestone? – the 5-year anniversary of some the most powerful solar storms ever recorded.

Called the "Halloween Storms of 2003," these energetic storms began, surprisingly, near the low point in the sun’s 11-year cycle of solar activity. During this usually "quiet" time, when few sunspots are visible, an outbreak of 17 major flares erupted on the sun.

The flares caused the sun’s magnetic field lines to stretch then suddenly snap like a rubber band stretched beyond its limit. The result was coronal mass ejections, enormous explosions on the sun’s surface that can blast billions of tons of electrified gas and subatomic particles into space at speeds up to 5 million miles per hour. This ‘space weather’ can and does affect Earth.

Space weather from these enormous solar storms slammed into Earth’s magnetic field from October 19 through November 7. “The effects of these storms were ghoulish enough that [aircraft controllers] had to re-route aircraft, it affected satellite systems and communications, and it also caused a power outage in Sweden for about an hour,” said Dr. Holly Gilbert, a solar scientist at NASA’s Goddard Space Flight Center in Greenbelt, Md.

During the height of the solar activity, more than half of the deep space and near-Earth space science missions experienced the effects of the Halloween storms of 2003. The Solar and Heliospheric Observatory (SOHO) satellite, a collaboration between NASA and the European Space Agency (ESA), failed temporarily. NASA’s Advanced Composition Explorer (ACE) satellite experienced damage, and instruments aboard many spacecraft had to be shut down temporarily.

Another effect of these storms was an increase in the colorful dancing lights seen at Earth’s north and south poles, called aurora. “The aurora are normally limited to the higher latitudes, and these storms were so powerful they created aurora that could be seen as far south as Florida,” said Gilbert.

Scary solar storms like the Halloween storms of 2003 are the exception, rather than the rule. Preparing for sudden, severe space weather can help reduce the effects of storms like these. A future NASA mission, called the Solar Dynamics Observatory (SDO) will investigate the sun in great detail in an attempt to learn how changes on the sun impact Earth. The more sun-focused satellites learn about our nearest star, the better prepared we’ll be the next time storms erupt on the sun.

Provided by NASA's Goddard Space Flight Center

Explore further: With so much vested in satellites, solar storms could bring life to a standstill

Related Stories

Sunny, with a chance of nuclear bullets

July 23, 2015

In space, far above Earth's turbulent atmosphere, you might think the one thing you don't have to worry about is weather. But you would be wrong. Just ask the people charged with the safety of the Cloud-Aerosol Lidar and ...

NOAA's GOES-S sensor gets clean bill of health from hospital

July 22, 2015

One of the sensors that will fly aboard NOAA's Geostationary Operational Environmental Satellite-S was recently given a clean bill of health from Massachusetts General Hospital in Boston. The sensor, known as EHIS, was successfully ...

Curiosity Mars rover tracks sunspots

July 13, 2015

While busily investigating bedrock types on Mars' Mount Sharp and preparing for a drill test, NASA's Curiosity Mars rover has also been looking up frequently to monitor sunspots on the face of the sun that is turned away ...

What causes lightning?

July 10, 2015

Thunder and lightning. When it comes to the forces of nature, few other things have inspired as much fear, reverence, or fascination – not to mention legends, mythos, and religious representations. As with all things in ...

Recommended for you

A cataclysmic event of a certain age

July 27, 2015

At the end of the Pleistocene period, approximately 12,800 years ago—give or take a few centuries—a cosmic impact triggered an abrupt cooling episode that earth scientists refer to as the Younger Dryas.

'Carbon sink' detected underneath world's deserts

July 28, 2015

The world's deserts may be storing some of the climate-changing carbon dioxide emitted by human activities, a new study suggests. Massive aquifers underneath deserts could hold more carbon than all the plants on land, according ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.