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You entered an invalid date. This is yesterday's edition. -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
Solar wind
speed: 458.8 km/sec
density: 2.2 protons/cm3
explanation | more data
Updated: Today at 2349 UT
X-ray Solar Flares
6-hr max: C1
1707 UT Nov30
24-hr: C1
1707 UT Nov30
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 30 Nov 15
Not one of these sunspots has the type of unstable magnetic field that poses a threat for strong flares. Solar activity remains low. Credit: SDO/HMI

Sunspot number: 47
What is the sunspot number?
Updated 30 Nov 2015

Spotless Days
Current Stretch: 0 days
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 30 Nov 2015

The Radio Sun
10.7 cm flux: 96 sfu
explanation | more data
Updated 30 Nov 2015

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 5
explanation | more data
Interplanetary Mag. Field
Btotal: 4.8 nT
Bz: 0.6 nT south
explanation | more data
Updated: Today at 2348 UT
Coronal Holes: 30 Nov 15

Streams of solar wind flowing from the indicated coronal hole are buffeting Earth's magnetic field on Nov.30th. Credit: SDO/AIA.
Noctilucent Clouds The northern season for NLCs is finished. According to NASA's AIM spacecraft, the last clouds were observed over Greenland on Aug. 27th. Now the waiting begins for the southern season expected to begin in November.
Switch view: Ross Ice Shelf, Antarctic Peninsula, East Antarctica, Polar
Updated at: 11-30-2015 18:55:02
NOAA Forecasts
Updated at: 2015 Nov 30 2200 UTC
0-24 hr
24-48 hr
05 %
05 %
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: 2015 Nov 30 2200 UTC
0-24 hr
24-48 hr
30 %
20 %
10 %
05 %
01 %
01 %
High latitudes
0-24 hr
24-48 hr
15 %
20 %
35 %
35 %
40 %
25 %
Monday, Nov. 30, 2015
What's up in space

Marianne's Heaven On Earth Aurora Chaser Tours invites you to join them in their quest to find and photograph the Aurora Borealis. Experience the winter wonderland in the Tromsø Area.

Chase the Light Tours

ERUPTING PROMINENCE: For days, astronomers have been monitoring a gigantic prominence on the sun's southwestern limb. Today, the magnetic structure erupted, hurling a bright CME into space. The CME will not hit Earth. Solar flare alerts: text or voice

THE SOLAR WIND HAS ARRIVED: Arriving one day earlier than expected, a stream of high-speed solar wind is buffeting Earth's magnetic field on Nov. 30th. The onset of the stream sparked a G1-class geomagnetic storm and bright auroras around the Arctic Circle. Photographer and tour guide Marketa Murray sends this picture from Fairbanks, Alaska:

"Today, we had an honored guest, Dr. Neal Brown, the first director of the Poker Flat Rocket Facility where auroras are studied using sounding rockets. Neal ran the facility from 1971 through 1989," says Murray. "Neal says 'the Northern Lights are a silent symphony.' I photographed him playing the role of conductor."

High-latitude sky watchers should be alert for auroras on Nov. 30th and Dec. 1st as Earth moves deeper into the stream of solar wind stream. Aurora alerts: text or voice

Realtime Aurora Photo Gallery

TWO CMEs, ONE MIGHT BE EARTH-DIRECTED: A pair of CMEs--one bright and one faint--billowed away from the sun on Nov. 29th. Click to view a movie from the Solar and Heliospheric Observatory:

The bright CME (pictured above) will miss Earth; it came from an explosion on the far side of the sun and is not heading in our direction. The faint one, which appears later in the movie, could be geoeffective. It appears to be associated with a minor eruption of Earth-facing sunspot AR2459. Stay tuned for further analysis about the possible origin and impact of the faint CME. Solar flare alerts: text or voice

Realtime Space Weather Photo Gallery

MOONLIT AURORAS: For the past few nights, auroras have been difficult to see through the glare of the full Frosty Moon. On Nov. 27th, a splash of green penetrated the moonlight over Iceland:

"The moon lit the icebergs on lake Jökulsárlón in Iceland and made it almost look like daytime," reports photographer Madelon Dielen. "The auroras were there for a few minutes--just enough to give some extra color to this beautiful scene. "

The green could intensify in the nights ahead. NOAA forecasters estimate a 45% chance of G1-class geomagnetic storms by Dec. 1st when a high-speed stream of solar wind is expected to hit Earth's magnetic field. Aurora alerts: text or voice

Realtime Comet Photo Gallery

Realtime Noctilucent Cloud Photo Gallery

Realtime Meteor 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

On Nov. 29, 2015, the network reported 7 fireballs.
(7 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]

  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 November 30, 2015 there were 1638 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Miss Distance
2015 VH2
Nov 24
12.9 LD
14 m
2003 EB50
Nov 29
48.8 LD
2.2 km
2007 BG29
Dec 1
54.1 LD
1.1 km
2015 VZ145
Dec 8
9.2 LD
80 m
1998 WT24
Dec 11
10.9 LD
1.1 km
2011 YD29
Dec 24
9.7 LD
24 m
2003 SD220
Dec 24
28.4 LD
1.8 km
2008 CM
Dec 29
22.8 LD
1.5 km
2004 MQ1
Jan 2
55.4 LD
1.1 km
1999 JV6
Jan 6
12.6 LD
410 m
1685 Toro
Jan 22
60.9 LD
1.7 km
2001 XR1
Jan 23
74.4 LD
1.5 km
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
Situation Report -- Oct. 30, 2015 Stratospheric Radiation (+37o N)
Cosmic ray levels are elevated (+6.1% above the Space Age median). The trend is flat. Cosmic ray levels have increased +0% in the past month.
Sept. 06: 4.14 uSv/hr (414 uRad/hr)
Sept. 12: 4.09 uSv/hr (409 uRad/hr)
Sept. 23: 4.12 uSv/hr (412 uRad/hr)
Sept. 25: 4.16 uSv/hr (416 uRad/hr)
Sept. 27: 4.13 uSv/hr (413 uRad/hr)
Oct. 11: 4.02 uSv/hr (402 uRad/hr)
Oct. 22: 4.11 uSv/hr (411 uRad/hr)
These measurements are based on regular space weather balloon flights: learn more.

Approximately once a week, 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. Our measurements show that someone flying back and forth across the continental USA, just once, can absorb as much ionizing radiation as 2 to 5 dental X-rays. Here is the data from our latest flight, Oct. 22nd:

Radiation levels peak at the entrance to the stratosphere in a broad region called the "Pfotzer Maximum." This peak is named after physicist George Pfotzer who discovered it using balloons and Geiger tubes in the 1930s. Radiation levels there are more than 80x sea level.

Note that the bottom of the Pfotzer Maximim is near 55,000 ft. This means that some high-flying aircraft are not far from the zone of maximum radiation. Indeed, according to the Oct 22th measurements, a plane flying at 45,000 feet is exposed to 2.79 uSv/hr. At that rate, a passenger would absorb about one dental X-ray's worth of radiation in about 5 hours.

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.

  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.
  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
  the underlying science of space weather
Synergy Spray Foam Insulation of Houston TX
  Protection from the Sun!
Kotton Grammer, Search Engine Marketing
  a sponsor of
  more links...
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