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Solar wind
speed: 519.4 km/sec
density: 0.3 protons/cm3
explanation | more data
Updated: Today at 2346 UT
X-ray Solar Flares
6-hr max: C1
2224 UT Feb19
24-hr: C3
0201 UT Feb19
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 19 Feb 14
Sunspot AR1982 has a 'beta-gamma' magnetic field that harbors energy for M-class solar flares. Credit: SDO/HMI
Sunspot number: 134
What is the sunspot number?
Updated 19 Feb 2014

Spotless Days
Current Stretch: 0 days
2014 total: 0 days (0%)
2013 total: 0 days (0%)
2012 total: 0 days (0%)
2011 total: 2 days (<1%)
2010 total: 51 days (14%)
2009 total: 260 days (71%)

Update
19 Feb 2014

The Radio Sun
10.7 cm flux: 151 sfu
explanation | more data
Updated 19 Feb 2014

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 6
storm
explanation | more data
Interplanetary Mag. Field
Btotal: 11.5 nT
Bz: 6.3 nT north
explanation | more data
Updated: Today at 1329 UT
Coronal Holes: 19 Feb 14
Earth is inside a stream of solar wind flowing from the indicated coronal hole. Credit: SDO/AIA.

Spaceweather.com posts daily satellite images of noctilucent clouds (NLCs), which hover over Earth's poles at the edge of space. The data come from NASA's AIM spacecraft. The north polar "daisy" pictured below is a composite of near-realtime images from AIM assembled by researchers at the University of Colorado's Laboratory for Atmospheric and Space Physics (LASP).
Noctilucent Clouds
Switch view: Europe, USA, Asia, Polar
Updated at: 02-18-2014 10:55:02
SPACE WEATHER
NOAA Forecasts
Updated at: 2014 Feb 19 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
30 %
35 %
CLASS X
05 %
05 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2014 Feb 19 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
35 %
MINOR
05 %
15 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
10 %
MINOR
30 %
25 %
SEVERE
30 %
50 %
 
Wednesday, Feb. 19, 2014
What's up in space
 

When is the best time to see auroras? Where is the best place to go? And how do you photograph them? These questions and more are answered in a new book, Northern Lights - a Guide, by Pal Brekke & Fredrik Broms.

 
Northern Lights - a Guide

CME IMPACT, GEOMAGNETIC STORM: A minor geomagnetic storm was already in progress on Feb. 19th when a CME struck Earth's magnetic field at approximately 0200 UT. The impact revved-up the storm and sent Northern Lights spilling across the Canadian border into the United States. Douglas Kiesling sends this picture from Sauk Rapids, Minnesota:

"The auroras were so bright, I could actually see a snowy owl on power pole back lit by the green glow," says Kiesling. "The owl itself was illuminated by bright moonlight."

High-latitude sky watchers, if it's dark where you live, look for auroras. Geomagnetic activity is still underway as Earth's magnetic field reverberates from the CME impact. Aurora alerts: text, voice

Realtime Aurora Photo Gallery

HAPPY VALENTINE'S DAY FROM THE STRATOSPHERE: Helium is not free. That's why the student scientists of Earth to Sky Calculus occasionally fly commercial payloads onboard their suborbital research balloons. The profits fund space weather experiments in the stratosphere. On Feb. 11th, the team flew a batch of Valentine's Cards to the edge of space. Spaceweather reader Shiree Schade was one of the customers:

"Best Valentine's card...EVER!" she says. "Not only will my valentine cherish the image, but I can't wait to start bragging to my friends that I'VE been to the stratosphere."

The student group makes regular flights to the stratosphere to measure radiation and ozone during periods of stormy space weather. If you would like to support their work with, say, a birthday card or Mother's Day greeting, contact Dr. Tony Phillips to book passage. The cost is only $49.95.

Realtime Space Weather Photo Gallery

'RADIOACTIVE' ERUPTION: On Feb. 17th at approximately 04:50 UT, a magnetic filament erupted from the sun's western limb. NASA's Solar Dynamics Observatory captured this high-resolution image of the blast:

Because of its location on the sun's western limb, the eruption did not send a CME toward Earth. However, there was an effect on our planet: Shortwave radio loudspeakers roared with static, an event called a Type II radio burst.

Here's how it works: The explosion sent shock waves rippling through the sun's atmosphere. Those shock waves, in turn, triggered plasma instabilities in the solar corona that emit strong radio emissions. The static-y "roar" of the explosion was picked up by solar observatories and ham radio stations across the dayside of our planet. Based on the sweep of radio frequencies from 20 MHz to 500 MHz, analysts estimate a shock velocity of 776 km/s or 1.7 million mph. That may sound fast, but it is typical for this type of eruption. Solar flare alerts: text, voice

Realtime Space Weather Photo Gallery


Realtime Comet Photo Gallery


  All Sky Fireball Network

Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA's Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth's atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

On Feb. 17, 2014, the network reported 11 fireballs.
(11 sporadics)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point--Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

On Feb. 16, 2014, the network reported 0 fireballs.
(winter weather)

On Feb. 15, 2014, the network reported 0 fireballs.
(winter weather)

  Near Earth Asteroids
Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.
On February 19, 2014 there were 1457 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2006 DP14
Feb 10
6.2 LD
730 m
2014 BT43
Feb 11
9.8 LD
31 m
2014 CB3
Feb 12
8.8 LD
26 m
2000 EM26
Feb 18
8.8 LD
195 m
2014 BR57
Feb 20
4.4 LD
71 m
1995 CR
Feb 21
7.7 LD
215 m
2014 CR
Feb 24
8.3 LD
124 m
2000 EE14
Mar 6
64.6 LD
1.8 km
2014 CU13
Mar 11
8.1 LD
225 m
2003 QQ47
Mar 26
49.9 LD
1.4 km
1995 SA
Apr 2
73.1 LD
1.6 km
2000 HD24
Apr 4
42.2 LD
1.3 km
2007 HB15
Apr 28
6.7 LD
12 m
Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.
  Essential web links
NOAA Space Weather Prediction Center
  The official U.S. government space weather bureau
Atmospheric Optics
  The first place to look for information about sundogs, pillars, rainbows and related phenomena.
Solar Dynamics Observatory
  Researchers call it a "Hubble for the sun." SDO is the most advanced solar observatory ever.
STEREO
  3D views of the sun from NASA's Solar and Terrestrial Relations Observatory
Solar and Heliospheric Observatory
  Realtime and archival images of the Sun from SOHO.
Daily Sunspot Summaries
  from the NOAA Space Environment Center
Heliophysics
  the underlying science of space weather
Space Weather Alerts
   
  more links...
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