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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 455.0 km/sec
density: 7.1 protons/cm3
more data: ACE, DSCOVR
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: A2
2229 UT Jan07
24-hr: A7
0025 UT Jan07
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 07 Jan 19
Departing sunspot AR2732 is crackling with minor B-class (and even one C-class) solar flares. Credit: SDO/HMI

Sunspot number: 12
What is the sunspot number?
Updated 07 Jan 2019

Spotless Days
Current Stretch: 0 days
2019 total: 0 days (0%)
2018 total: 221 days (61%)
2017 total: 104 days (28%)
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%)
2008 total: 268 days (73%)
2007 total: 152 days (42%)
2006 total: 70 days (19%)

Updated 07 Jan 2019


Thermosphere Climate Index
today: 3.61
x1010 W Cold
Max: 49.4
x1010 W Hot (10/1957)
Min: 2.05
x1010 W Cold (02/2009)
explanation | more data
Updated 07 Jan 2019

The Radio Sun
10.7 cm flux: 72 sfu
explanation | more data
Updated 07 Jan 2019

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 4.4 nT
Bz: 1.2 nT north
more data: ACE, DSCOVR
Updated: Today at 2346 UT
Coronal Holes: 07 Jan 19

Earth is inside a stream of solar wind flowing from the indicated coronal hole. Credit: SDO/AIA
Noctilucent Clouds The southern season for noctilucent clouds (NLCs) has begun! NASA's AIM spacecraft is detecting electric blue clouds at the edge of space over Antarctica.
Switch view: Europe, USA, Asia, Polar
Updated at: 01-07-2019 15:55:02
SPACE WEATHER
NOAA Forecasts
Updated at: 2019 Jan 07 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: 2019 Jan 07 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
10 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
20 %
20 %
SEVERE
10 %
10 %
 
Monday, Jan. 7, 2019
What's up in space
       
 

Lights Over Lapland has a brand-new website full of exciting adventures in Abisko National Park, Sweden! Take a look at our aurora activities and book your once-in-a-lifetime trip with us today!

 

WEEKEND SOLAR ECLIPSE: On Sunday, Jan. 6th, the Moon passed in front of the sun, off center, producing a partial solar eclipse visible from coastal China to the Aleutian Islands of Alaska. During the event, as much as 71% of the solar disk was covered. Browse the solar eclipse gallery for photos.

THE NITROGEN FRINGE: Over the weekend, a high-speed stream of solar wind buffeted Earth's magnetic field, sparking big green auroras around the Arctic Circle. Last night in Utsjoki, Finland, Tiina Salonen of Aurora Holidays noticed something extra--a fringe of pink:

This is a "nitrogen fringe." Most auroras are green--the color of oxygen atoms being struck by energetic particles from space between 100 km and 300 km above Earth's surface. Pink appears when energetic particles descend lower than usual, striking nitrogen molecules at the 100 km level and below.  

"Auroras--both pink and green--danced all above us on Jan. 6th," says Salonen. "It was absolutely stunning!"

There is anecdotal evidence that Solar Minimum produces an unusual number of pink and even white auroras. Why? The "flavor" (chemical and magnetic composition) of solar wind during Solar Minimum may differ from other phases of the solar cycle, producing its own palette of color. If so, more pink lights may be in the offing on Jan. 7th as the solar wind continues to blow. Aurora Alerts: SMS text

Realtime Aurora Photo Gallery

OUT OF THIS WORLD VALENTINE'S GIFT: Valentine's Day is only 5 weeks away. Need a far-out gift? Consider the Valentine's Space Rose. This one flew 96,000 feet above the snow-capped Sierras of California on Jan. 3rd:

You can have it for $129.95. The rose is laser-etched into a block of optical-quality borosilicate crystal with the words "I Love You" curving around the stem. The students of Earth to Sky Calculus are selling these  to support their cosmic ray ballooning program.

Each rose comes with a greeting card showing the item in flight and telling the story of its journey to the edge of space. Also included is a rotating LED stand that fills the bloom with 4 luminous colors.

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


Realtime Space Weather 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 Jan. 6, 2019, the network reported 17 fireballs.
(12 sporadics, 3 Quadrantids, 1 lambda Bootid, 1 December Leonis Minorid)

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 January 7, 2019 there were 1947 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Velocity (km/s)
Diameter (m)
2019 AE3
2019-Jan-02
2 LD
8.5
13
2019 AY3
2019-Jan-03
13.2 LD
19.4
60
2014 AD16
2019-Jan-04
12.9 LD
9.4
12
2018 YP2
2019-Jan-04
14 LD
17
28
2019 AB
2019-Jan-04
1.4 LD
9.8
20
2019 AX3
2019-Jan-04
9.2 LD
3.3
11
2018 YR2
2019-Jan-05
9.1 LD
5.2
17
2019 AU
2019-Jan-05
7.8 LD
3.1
17
2019 AH3
2019-Jan-05
1.3 LD
18
9
2019 AJ3
2019-Jan-06
18.8 LD
10.1
54
2018 XO4
2019-Jan-06
7.8 LD
4
31
2016 AZ8
2019-Jan-07
11.6 LD
9.1
224
2018 YQ2
2019-Jan-10
7.5 LD
5.7
21
2013 YM2
2019-Jan-10
7.8 LD
4.3
20
2019 AD
2019-Jan-10
3 LD
5.6
10
2018 YU2
2019-Jan-12
5.6 LD
4.6
17
2019 AX2
2019-Jan-12
17.6 LD
22.1
42
2019 AK3
2019-Jan-12
4.9 LD
10.7
13
2019 AR2
2019-Jan-13
7.6 LD
4.8
50
2019 AG3
2019-Jan-14
12.9 LD
14.6
85
2018 XN
2019-Jan-14
11.9 LD
5.6
59
2019 AC3
2019-Jan-17
10.7 LD
4.4
12
2013 CW32
2019-Jan-29
13.9 LD
16.4
148
2019 AV2
2019-Feb-01
17.6 LD
13.2
202
2013 RV9
2019-Feb-06
17.9 LD
5.9
68
2017 PV25
2019-Feb-12
7.3 LD
6.1
43
455176
2019-Feb-20
19.2 LD
26.5
269
2016 CO246
2019-Feb-22
15.8 LD
5.5
23
2018 DE1
2019-Feb-27
19.8 LD
6.5
28
2016 FU12
2019-Feb-27
15.4 LD
5.2
15
2015 EG
2019-Mar-04
1.2 LD
9.6
26
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

SOMETHING NEW! We have developed a new predictive model of aviation radiation. It's called E-RAD--short for Empirical RADiation model. We are constantly flying radiation sensors onboard airplanes over the US and and around the world, so far collecting more than 22,000 gps-tagged radiation measurements. Using this unique dataset, we can predict the dosage on any flight over the USA with an error no worse than 15%.

E-RAD lets us do something new: Every day we monitor approximately 1400 flights criss-crossing the 10 busiest routes in the continental USA. Typically, this includes more than 80,000 passengers per day. E-RAD calculates the radiation exposure for every single flight.

The Hot Flights Table is a daily summary of these calculations. It shows the 5 charter flights with the highest dose rates; the 5 commercial flights with the highest dose rates; 5 commercial flights with near-average dose rates; and the 5 commercial flights with the lowest dose rates. Passengers typically experience dose rates that are 20 to 70 times higher than natural radiation at sea level.

To measure radiation on airplanes, we use the same sensors we fly to the stratosphere onboard Earth to Sky Calculus cosmic ray balloons: neutron bubble chambers and X-ray/gamma-ray Geiger tubes sensitive to energies between 10 keV and 20 MeV. These energies span the range of medical X-ray machines and airport security scanners.

Column definitions: (1) The flight number; (2) The maximum dose rate during the flight, expressed in units of natural radiation at sea level; (3) The maximum altitude of the plane in feet above sea level; (4) Departure city; (5) Arrival city; (6) Duration of the flight.

SPACE WEATHER BALLOON DATA: 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 18% since 2015:

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.

En route to the stratosphere, our sensors also pass through aviation altitudes:

In this plot, 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.

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.

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.

  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
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