Solar wind
speed: 340.2 km/sec
density: 4.1 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 0711 UT
X-ray Solar Flares
6-hr max: A8
0618 UT Dec16
24-hr: A8
0618 UT Dec16
explanation | more data
Updated: Today at: 0700 UT
Daily Sun: 16 Dec 17
The sun is blank--no sunspots. Credit: SDO/HMI

Sunspot number: 0
What is the sunspot number?
Updated 16 Dec 2017

Spotless Days
Current Stretch: 3 days
2017 total: 97 days (27%)
2016 total: 32 days (9%)
2015 total: 0 days (0%)

2014 total: 1 day (<1%)
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%)

Updated 16 Dec 2017


The Radio Sun
10.7 cm flux: 72 sfu
explanation | more data
Updated 15 Dec 2017

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 0 quiet
24-hr max: Kp= 2
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 3.7 nT
Bz: 1.8 nT north
more data: ACE, DSCOVR
Updated: Today at 0711 UT
Coronal Holes: 16 Dec 17

Solar wind flowing from the indicated coronal hole could reach Earth on Dec. 17-18. Credit: SDO/AIA
Noctilucent Clouds Latest images from NASA's AIM spacecraft show that the 2017 northern summer season for noctilucent clouds has finished.
Switch view: Europe, USA, Asia, Polar
Updated at: 09-03-2017 01:55:03
SPACE WEATHER
NOAA Forecasts
Updated at: 2017 Dec 15 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
01 %
01 %
CLASS X
01 %
01 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2017 Dec 15 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
25 %
MINOR
01 %
10 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
15 %
30 %
SEVERE
10 %
35 %
 
Saturday, Dec. 16, 2017
What's up in space
       
 

Lights Over Lapland is excited to announce that we now have TWO aurora webcams covering nearly a 200° view of Abisko National Park in Sweden! Watch the auroras dance live, all season long here.

 

THE NEXT SOLAR WIND STREAM: A hole in the sun's atmosphere is facing Earth, and it is spewing a stream of solar wind toward our planet. Estimated time of arrival: Dec. 17th. Arctic sky watchers should be alert for auroras when the gaseous material arrivals. Free: Aurora Alerts.

THE SUN IS DIMMING: Yesterday at Cape Canaveral, SpaceX launched a new sensor to the International Space Station named TSIS-1. Its mission: to measure the dimming of the sun. As the sunspot cycle plunges toward its 11-year minimum, NASA satellites are tracking a decline in total solar irradiance (TSI). Across the entire electromagnetic spectrum, the sun's output has dropped nearly 0.1% compared to the Solar Maximum of 2012-2014. This plot shows the TSI since 1978 as observed from nine previous satellites:


Click here for a complete explanation of this plot.

The rise and fall of the sun's luminosity is a natural part of the solar cycle. A change of 0.1% may not sound like much, but the sun deposits a lot of energy on the Earth, approximately 1,361 watts per square meter. Summed over the globe, a 0.1% variation in this quantity exceeds all of our planet's other energy sources (such as natural radioactivity in Earth's core) combined. A 2013 report issued by the National Research Council (NRC), "The Effects of Solar Variability on Earth's Climate," spells out some of the ways the cyclic change in TSI can affect the chemistry of Earth's upper atmosphere and possibly alter regional weather patterns, especially in the Pacific.

NASA's current flagship satellite for measuring TSI, the Solar Radiation and Climate Experiment (SORCE), is now more than six years beyond its prime-mission lifetime. TSIS-1 will take over for SORCE, extending the record of TSI measurements with unprecedented precision. It's five-year mission will overlap a deep Solar Minimum expected in 2019-2020. TSIS-1 will therefore be able to observe the continued decline in the sun's luminosity followed by a rebound as the next solar cycle picks up steam. Installing and checking out TSIS-1 will take some time; the first science data are expected in Feb. 2018. Stay tuned.

Realtime Space Weather Photo Gallery

A CRYSTAL BALL IN THE STRATOSPHERE: For the first time ever, a crystal ball has visited the stratosphere. The students of Earth to Sky Calculus launched it on Oct. 19, 2017--a combination optics experiment and fundraiser. Watch the video as the crystal orb travels onboard a giant helium balloon 93,000 feet above Earth's surface, stretching, focusing, and inverting the incredible landscape of the Sierra Nevada mountains behind it:

This 800 gram crystal ball contains an embedded model of the Solar System, including the sun, eight planets and their moons. It makes an incredible gift for anyone interested in space.

We have flown only a small number of these heavyweight crystal balls. You can have one for $229. Each crystal ball comes with a unique gift card showing the item at the edge of space and telling the story of its flight. It also comes with a complementary crystal stand so you can display this unique keepsake on a desktop or shelf. QUANTITIES ARE LIMITED.

Far Out Gifts: Earth to Sky Store
All proceeds support hands-on STEM education


Realtime Aurora 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 Dec. 15, 2017, the network reported 331 fireballs.
(194 Geminids, 128 sporadics, 4 December Leonis Minorids, 3 December Monocerotids, 1 sigma Hydrid, 1 Comae Berenicid)

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]

  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 December 16, 2017 there were 1872 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Velocity (km/s)
Diameter (m)
2017 XZ2
2017-Dec-10
3.9 LD
8.2
12
2017 XE2
2017-Dec-10
11.1 LD
9.9
31
2017 XS60
2017-Dec-12
12.8 LD
19.1
21
2017 WE13
2017-Dec-12
16.4 LD
5.3
26
2017 VS14
2017-Dec-12
15.8 LD
2.8
15
2017 XU60
2017-Dec-13
9 LD
10.2
14
2017 WJ28
2017-Dec-13
12.8 LD
6
21
2015 XX169
2017-Dec-14
9.7 LD
6.3
11
2006 XY
2017-Dec-14
3.4 LD
4.9
56
2017 XY2
2017-Dec-15
4.5 LD
8.2
13
2017 XK1
2017-Dec-15
6.2 LD
12.2
32
2017 XR2
2017-Dec-15
12.2 LD
9.4
44
2017 XD2
2017-Dec-15
14.4 LD
12.3
69
2017 VT14
2017-Dec-17
3.8 LD
10.4
84
2017 XT60
2017-Dec-17
8 LD
7
12
2017 XW60
2017-Dec-18
5.2 LD
8.8
9
2011 YD29
2017-Dec-19
17.6 LD
7.7
20
2017 WX12
2017-Dec-21
10 LD
11.4
138
2017 XR60
2017-Dec-21
13 LD
6.2
49
2017 XQ60
2017-Dec-21
13.4 LD
15.7
49
2017 TS3
2017-Dec-22
18.1 LD
10.2
137
418849
2017-Dec-22
15.3 LD
17.4
257
2015 YQ1
2017-Dec-22
17.3 LD
11.1
9
2017 WZ14
2017-Dec-24
7.6 LD
4.9
33
2017 XG1
2017-Dec-29
16.4 LD
9.9
38
2017 QL33
2017-Dec-30
13.3 LD
8.2
190
2015 RT1
2018-Jan-02
19.7 LD
9
30
2004 FH
2018-Jan-10
20 LD
8.5
26
306383
2018-Jan-22
14.4 LD
17.4
178
2002 CB19
2018-Feb-02
10.5 LD
15.6
36
276033
2018-Feb-04
11 LD
34
646
2015 BN509
2018-Feb-09
12.9 LD
17.7
257
1991 VG
2018-Feb-11
18.4 LD
2.1
7
2014 WQ202
2018-Feb-11
15.1 LD
19.8
62
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.
  Cosmic Rays in the Atmosphere

Readers, thank you for your patience while we continue to develop this new section of Spaceweather.com. We've been working to streamline our data reduction, allowing us to post results from balloon flights much more rapidly, and we have developed a new data product, shown here:

This plot displays radiation measurements not only in the stratosphere, but also at aviation altitudes. Dose rates are expessed as multiples of sea level. For instance, we see that boarding a plane that flies at 25,000 feet exposes passengers to dose rates ~10x higher than sea level. At 40,000 feet, the multiplier is closer to 50x. These measurements are made by our usual cosmic ray payload as it passes through aviation altitudes en route to the stratosphere over California.

What is this all about? Approximately once a week, Spaceweather.com and the students of Earth to Sky Calculus fly space weather balloons to the stratosphere over California. These balloons are equipped with radiation sensors that detect cosmic rays, a surprisingly "down to Earth" form of space weather. Cosmic rays can seed clouds, trigger lightning, and penetrate commercial airplanes. Furthermore, there are studies ( #1, #2, #3, #4) linking cosmic rays with cardiac arrhythmias and sudden cardiac death in the general population. Our latest measurements show that cosmic rays are intensifying, with an increase of more than 13% since 2015:


Why are cosmic rays intensifying? The main reason is the sun. Solar storm clouds such as coronal mass ejections (CMEs) sweep aside cosmic rays when they pass by Earth. During Solar Maximum, CMEs are abundant and cosmic rays are held at bay. Now, however, the solar cycle is swinging toward Solar Minimum, allowing cosmic rays to return. Another reason could be the weakening of Earth's magnetic field, which helps protect us from deep-space radiation.

The radiation sensors onboard our helium balloons detect X-rays and gamma-rays in the energy range 10 keV to 20 MeV. These energies span the range of medical X-ray machines and airport security scanners.

The data points in the graph above correspond to the peak of the Reneger-Pfotzer maximum, which lies about 67,000 feet above central California. When cosmic rays crash into Earth's atmosphere, they produce a spray of secondary particles that is most intense at the entrance to the stratosphere. Physicists Eric Reneger and Georg Pfotzer discovered the maximum using balloons in the 1930s and it is what we are measuring today.

  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
NOAA 27-Day Space Weather Forecasts
  fun to read, but should be taken with a grain of salt! Forecasts looking ahead more than a few days are often wrong.
Aurora 30 min forecast
  from the NOAA Space Environment Center
Heliophysics
  the underlying science of space weather
Spaceweather.com welcomes two supporters of science communication: SEO Phoenix AZ and CRAS, the Conservatory of Recording Arts and Sciences. Only the best social media jobs in the United States
   
Look no further to find the best Comox Valley Real Estate listings and homes for sale
   
Buy real active Instagram followers
Need a break from space weather? Relax with the best gaming headset
Houston SEO Expert
Guide for best car parts at prettymotors.com
   
Chicago SEO Expert
   

Spaceweather introduces you to fogut.com where you can read out some great good morning quotes for her.

Search Kelowna Real Estate Listings & Homes for Sale easily.
Find help on all Calgary Homes For Sale and Real Estate Listings. Great source for Edmonton Real Estate Listings & Homes For Sale
   
Need protection from UV radiation? Check out roofing In Grand Rapids MI
   
Reviews here can help you to pick up best memory foam mattresses.
  These links help Spaceweather.com stay online. Thank you to our supporters!
  more links...
 
 





Spaceweather.com is supported by ProToolZone

 

space weather alerts

Support SpaceWeather.com

Sponsored link:
Top Spotting Scope Brands

Be sure to read how to's and reviews on things you love

Sponsored link:
Gaming Monitors

Sponsored link:
Savant Magazine

Sponsored link:
Property Owner Search

Tired of expired coupon codes? Try Dealspotr,
the web's most accurate coupon site

Sponsored link:
Currency Converter

Sponsored link:
Locksmith Orlando

Sponsored link:
Hosted Desktop

Sponsored link:
Buy twitter followers cheap

Sponsored link:
Roseville SEO

Sponsored link:
DVLA Information

Sponsored link:
Learn how to use Excel

Sponsored link:
ShowBox

Sponsored link:
Google Customer Service

Support SpaceWeather.com
space weather alerts


       
©2017 Spaceweather.com. All rights reserved. This site is penned daily by Dr. Tony Phillips.


space weather alerts


Business Web Directory


Lera Blog


The Best Web Hosting Companies of 2017



Support SpaceWeather.com

Wholesale Solar Panels

Support SpaceWeather.com