http://spaceweather.com/ - Oct 21, 2014 10:45:09 AM - Dec 1, 2004 12:53:58 AM
586.2 1.1 Updated: Today at 1736 UT M1 1338 UT Oct21 M1 1338 UT Updated: Today at: 1700 UT Updated 21 Oct 2014 Update 21 Oct185 Updated 21 Oct 20144 unsettled Kp= 4 unsettled6.8 0.7 Updated: Today at 1603 UT
PARTIAL SOLAR ECLIPSE: This Thursday Oct. 23rd, the Moon will pass in front of the sun, off center, producing a partial solar eclipse visible from almost all of North America. Get the from Science@NASA.
604.2 0.9 Updated: Today at 1326 UT C6 1058 UT Oct21 C6 1058 UT Updated: Today at: 1300 UT6.7 0.9 north Updated: Today at 1327 UT
MONSTER SUNSPOT: The biggest sunspot of the current solar cycle is turning toward Earth. This morning when astronomer Karzaman Ahmad of Malaysia's Langkawi Nagtional Observatory looked through the eyepiece of his solar telescope, he declared AR2192 a "monster" and snapped this picture:
This behemoth active region is 125,000 km wide, almost as big as the planet Jupiter. These dimensions make it an easy target for backyard solar telescopes--hence so many pictures in the realtime photo gallery
A few days ago, AR2192 unleashed an X1-class solar flare. Since then the sunspot has almost doubled in size and developed an increasingly unstable 'beta-gamma-delta' magnetic field. It would seem to be just a matter of time before another strong explosion occurs. NOAA forecasters estimate at 60% chance of M-class flares and a 20% chance of X-flares on Oct. 21st.
SOLAR WIND SPARKS NORTHERN LIGHTS: A high-speed stream of solar wind is buffeting Earth's magnetic field, sparking bright lights around both poles. "This evening the auroras appeared everywhere," reports Anne Birgitte Fyhn, who photographed the display from a pond on Kvaløya island, Tromsø, Norway:
"They were amazing," she says. "I ran around the pond a couple of times taking pictures from different spots. Finally, I decided to just sit down, look up, and enjoy the show."
High-latitude sky watchers should remain alert for auroras on Oct. 21-22. NOAA forecasters estmate a 45% chance of geomagnetic storms as the solar wind continues to blow.
455.7 3.9 Updated: Today at 0827 UT C9 0602 UT Oct20 C9 0602 UT Oct20 Updated: Today at: 0800 UT Daily Sun: 20 Oct 14 Huge sunspot AR2192 poses a threat for X-class solar flares. Credit: SDO/HMIUpdated 20 Oct 2014 Update 20 Oct Updated 20 Oct 2014
METEORS FROM HALLEY'S COMET: Earth is passing through a stream of debris from Halley's Comet, source of the annual Orionid meteor shower. Forecasters expect the shower to peak on Tuesday, Oct. 21st, with as many as 25 meteors per hour. The best time to look is during the dark hours before local sunrise. [
GROWING CHANCE OF FLARES: Big sunspot AR2192 has grown even bigger, spreading across 1/3rd more solar terrain today than it did yesterday. NASA's Solar Dynamics Observatory recorded the expansion:
Yesterday, the sunspot produced a long-duration X1-flare (movie) and a strong HF radio blackout over Asia and Australia. The next X-flare, if one occurs, will be even more geoeffective as the sunspot turns toward Earth.
If you have a , now is a great time to look at the sun. AR2192 looks absolutely spectacular. Snapshots from around the world may be found in the realtime photo gallery
More auroras are in the offing. NOAA forecasters estimate a 40% chance of polar geomagnetic storms on Oct. 21-22 when Earth is expected to run into a high-speed solar wind stream.