| | Switch to: Europe, USA, New Zealand, Antarctica Credit: NOAA/Ovation Planetary K-index Now: Kp= 2 quiet 24-hr max: Kp= 4 unsettled explanation | more data Interplanetary Mag. Field Btotal: 5.6 nT Bz: 1.9 nT north more data: ACE, DSCOVR Updated: Today at 2348 UT Coronal Holes: 03 Jun 17 There are no large coronal holes on the Earthside of the sun. Credit: NASA/SDO. Noctilucent Clouds NASA's AIM spacecraft, which monitors NLCs from space, recent moved into a new orbit around Earth. Daily data are currently unavailable while the spacecraft's pointing settles. Polar images should resume in early June. Stay tuned! Switch view: Ross Ice Shelf, Antarctic Peninsula, East Antarctica, Polar Updated at: 02-24-2017 17:55:02 SPACE WEATHER NOAA Forecasts | | Updated at: 2017 Jun 03 2200 UTC FLARE | 0-24 hr | 24-48 hr | CLASS M | 15 % | 15 % | 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 Jun 03 2200 UTC Mid-latitudes | 0-24 hr | 24-48 hr | ACTIVE | 35 % | 10 % | MINOR | 20 % | 01 % | SEVERE | 05 % | 01 % | High latitudes | 0-24 hr | 24-48 hr | ACTIVE | 15 % | 15 % | MINOR | 20 % | 20 % | SEVERE | 20 % | 20 % | | | | | | | | | | | | Lights Over lapland is excited to announce that Autumn Aurora Adventures are available for immediate booking! Reserve your adventure of a lifetime in Abisko National Park, Sweden today! | | | WEEKEND LIGHT SHOW OVER THE US EAST COAST: Early risers along the Atlantic Coast of the USA might see see a light show before sunrise on Sunday, June 4th. A sounding rocket scheduled to launch from NASA's Wallops Flight Facility in Virginia between 4:26 am and 4:41 am EDT will deploy ten chemical-filled canisters, creating a network of red and blue-green vapors 96 to 124 miles high. Researchers will track the motions of the colorful gases to study the dynamics of Earth's ionosphere. (Note: This launch was originally scheduled for Saturday morning, then postponed until Sunday because boats intruded on the rocket's second stage impact zone.) Visit the mission blog for updates. ACTIVE SUNSPOT: Sunspot AR2661 has more than doubled in size since it appeared on June 1st and it is still crackling with C-class solar flares. Using a backyard solar telescope in Prescott Valley, Arizona, amateur astronomer Randy Shivak photographed the maelstrom around the sunspot's primary dark core: "I kept my eye on AR 2661 in hopes that it would flare--and it did," says Shivak. "I took this picture using a a 228mm F9 refracting telescope and a Daystar Quantum PE 0.5 angstrom filter." AR2661 is turning toward Earth, and the sunspot will soon be in a position to hurl CMEs in our direction. Indeed, a pair of CMEs recorded by SOHO on June 1st shows that AR2661 has the ability to produce such clouds. Now it's just a matter of targeting. Stay tuned! Free: Solar Flare Alerts Realtime Space Weather Photo Gallery RED SPRITES OVER EUROPE: High above thunderstorms in eastern Europe, red sprites are dancing across the cloudtops, reaching up to the edge of space itself. Martin Popek of Nýdek, Czech republic, photographed these specimens on June 1st: "The transient forms were shooting up from a storm in Slovenia," says Popek. Sprites are a true space weather phenomenon, inhabiting the upper reaches of Earth's atmosphere alongside noctilucent clouds, meteors, and auroras. Some researchers believe they are linked to cosmic rays: subatomic particles from deep space striking the top of Earth's atmosphere produce secondary electrons that, in turn, provide the spark that triggers sprites. If this is true, then sprites could multiply in the years ahead as cosmic rays intensify. Although sprites have been seen for at least a century, most scientists did not believe they existed until after 1989 when sprites were photographed by cameras onboard the space shuttle. Now "sprite chasers" routinely photograph sprites from their own homes. "I used up a Watec 910HX security camera with UFOCapture software to catch my sprites," says Popek. Give it a try! diagram: How to Look for Sprites Realtime Aurora Photo Gallery THE SPACE HAMMER FOR FATHER'S DAY: Just in time for Father's Day: The Space Hammer. On June 2nd, the students of Earth to Sky Calculus flew a payload of hammers to the edge of space, 35.0 km (115,000 feet) above Earth's surface on board a high altitude helium balloon. You can have one for $99.95: These compact 8 oz. hammers are light enough to fly on a balloon yet dense enough to deliver a powerful blow. The magnetic head holds a nail for one-handed starting, and the stubby 6 in. length is perfect for tight work areas. Each space hammer comes with a unique gift card showing the tool floating at the top of Earth's atmosphere. The interior of the card tells the story of the flight and confirms that this gift has been to the edge of space and back again. More edge of space Father's Day gifts may be found in the Earth to Sky Store. Far Out Gifts: Earth to Sky Store All proceeds support hands-on STEM education Realtime Noctilucent Cloud Photo Gallery Realtime Comet Photo Gallery 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 Jun. 3, 2017, the network reported 9 fireballs. (9 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] 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 June 3, 2017 there were 1803 potentially hazardous asteroids. | Recent & Upcoming Earth-asteroid encounters: Asteroid | Date(UT) | Miss Distance | Velocity (km/s) | Diameter (m) | 2017 CS | 2017-May-29 | 8 LD | 9.1 | 468 | 2017 KJ27 | 2017-May-30 | 6.1 LD | 16.2 | 29 | 2017 KW31 | 2017-May-31 | 1.2 LD | 10.8 | 18 | 418094 | 2017-Jun-01 | 8 LD | 23.2 | 490 | 2017 KX4 | 2017-Jun-01 | 15.2 LD | 9.4 | 47 | 2017 KJ3 | 2017-Jun-03 | 11.1 LD | 11.3 | 48 | 2017 KJ5 | 2017-Jun-04 | 11.6 LD | 3.7 | 16 | 2017 KK27 | 2017-Jun-04 | 15.7 LD | 6.5 | 29 | 2017 LD | 2017-Jun-05 | 3 LD | 4.8 | 10 | 2017 KR27 | 2017-Jun-06 | 7 LD | 12.6 | 69 | 2017 KQ27 | 2017-Jun-06 | 1 LD | 10.7 | 25 | 2017 LE | 2017-Jun-07 | 5.2 LD | 9 | 21 | 2017 HV4 | 2017-Jun-10 | 19.5 LD | 3.9 | 50 | 2017 KF3 | 2017-Jun-11 | 12.9 LD | 11.2 | 41 | 2010 VB1 | 2017-Jun-16 | 10.3 LD | 8.3 | 81 | 471984 | 2017-Jun-18 | 19.1 LD | 7.7 | 102 | 441987 | 2017-Jun-24 | 7.9 LD | 12.7 | 178 | 2017 BS5 | 2017-Jul-23 | 3.2 LD | 5.8 | 54 | 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. | The official U.S. government space weather bureau | | The first place to look for information about sundogs, pillars, rainbows and related phenomena. | | 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 | | Realtime and archival images of the Sun from SOHO. | | from the NOAA Space Environment Center | | a proud supporter of science education and Spaceweather.com | | fun to read, but should be taken with a grain of salt! Forecasts looking ahead more than a few days are often wrong. | | from the NOAA Space Environment Center | | the underlying science of space weather | | Beautyz for top beauty products reviews and their buying guides | | Reviews here can help you to pick up best memory foam mattresses. | | These links help Spaceweather.com stay online. Thank you to our supporters! | | | | | | | | | | | | ©2017 Spaceweather.com. All rights reserved. This site is penned daily by Dr. Tony Phillips. | |