| | Switch to: Europe, USA, New Zealand, Antarctica Credit: NOAA/Ovation Planetary K-index Now: Kp= 3 quiet 24-hr max: Kp= 4 unsettled explanation | more data Interplanetary Mag. Field Btotal: 7.0 nT Bz: -4.4 nT south more data: ACE, DSCOVR Updated: Today at 1927 UT Coronal Holes: 07 Apr 22 Solar wind flowing from this equatorial coronal hole should reach Earth on April 10-11. Credit: SDO/AIA Noctilucent Clouds The southern season for noctilucent clouds is over. It ended on Feb. 20, 2022, concluding the weakest NLC season in 14 years. The northern season will begin in late May.. Switch view: Ross Ice Shelf, Antarctic Peninsula, East Antarctica, Polar Updated at: SPACE WEATHER NOAA Forecasts | | Updated at: 2022 Apr 06 2200 UTC FLARE | 0-24 hr | 24-48 hr | CLASS M | 10 % | 10 % | 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: 2022 Apr 06 2200 UTC Mid-latitudes | 0-24 hr | 24-48 hr | ACTIVE | 35 % | 30 % | MINOR | 30 % | 15 % | SEVERE | 15 % | 01 % | High latitudes | 0-24 hr | 24-48 hr | ACTIVE | 05 % | 15 % | MINOR | 20 % | 30 % | SEVERE | 70 % | 40 % | | | | | | | | | | | | Lights Over Lapland has a full catalogue of exciting adventures in Abisko National Park, Sweden! Check out our daytime and evening activities and book your adventure! | | | WAITING FOR THE CME: April 6th passed quietly, contrary to predictions of a CME strike and geomagnetic storm. However, there is some confidence that the CME is still coming. NOAA forecasters expect a glancing blow on April 7th, possibly sparking minor G1-class geomagnetic storms. Aurora alerts: SMS Text A MAGNETIC FILAMENT ERUPTS: Earlier today, April 7th, a filament of magnetism in the sun's southern hemisphere rose up and erupted. NASA's Solar Dynamics Observatory recorded the blast: Debris from the explosion tore through the sun's atmosphere, creating a coronal mass ejection (CME). We await additional data from SOHO coronagraphs to determine if there may be an Earth-directed component. This was one of three long filaments on the Earthside of the sun poised to erupt. One down, two to go. Solar flare alerts: SMS Text Realtime Space Weather Photo Gallery Free: Spaceweather.com Newsletter CHINESE ROCKET PHOTOBOMBS AURORA: A week-long mystery has just been solved. On Tuesday, March 29th, webcams and sky watchers in the interior of Alaska, witnessed a strange blue ball of light cut across the night sky. "It seemed like it had something that was spinning inside," Fairbanks photographer Leslie Smallwood told local news station KUAC. Physicists at the University of Alaska Fairbanks had no explanation--except it looked gaseous. Above: An aurora webcam snapshot of the luminous blue ball. Credit: Marketa S. Murray The explanation, it turns out, may be traced back to the Taiyuan Satellite Launch Center in northern China. Jonathan McDowell, an astronomer at the Harvard Smithsonian Center for Astrophysics in Boston says sightings of the orb in Alaska match the flight of a Chinese satellite. "I am very confident that what people saw was the dumping of fuel from a Chinese rocket stage," he explains. "This rocket — the Longmarch 6A or Chang Zheng 6A — was launched early on March 29 from China, placed 2 satellites in orbit and, calculating its orbital path, it passed over the Yukon area about 350 miles up at exactly the time that this glow was seen in the Alaskan sky." Eyewitnesses said the orb was bigger than a full Moon. In fact, the cloud was a few hundred miles across. The tumbling rocket booster released its unused fuel into space where it expanded into a nearly spherical cloud of frozen propellant, reflecting high-altitude sunlight above Earth's atmosphere. Realtime Aurora Photo Gallery Free: Spaceweather.com Newsletter STERLING SILVER DOLPHIN PENDANT: On Feb. 28, 2022, the students of Earth to Sky Calculus launched a cosmic ray research balloon. This sterling silver dolphin hitched a ride, flying 111,101 feet above the Sierra Nevada mountains of Central California: You can have it for $142.95. Leaping through blue crystal waves, the playful cetacean is 100% 925 sterling silver. It comes with a matching 18-inch sterling silver chain The entire pendant is lead-free, nickel-free, cadmium-free, and totally hypoallergenic. Each pendant comes with a greeting card showing the dolphin in flight, and telling the story of its trip to the edge of space and back again. All sales support the student's cosmic ray research program. Far Out Gifts: Earth to Sky Store All sales support hands-on STEM education Realtime Space Weather Photo Gallery Free: Spaceweather.com Newsletter 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 Apr 07, 2022, 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] 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 April 7, 2022 there were 1992 potentially hazardous asteroids. | Recent & Upcoming Earth-asteroid encounters: Asteroid | Date(UT) | Miss Distance | Velocity (km/s) | Diameter (m) | 2022 GQ2 | 2022-Apr-02 | 10.2 LD | 7.4 | 24 | 2022 GJ2 | 2022-Apr-02 | 11.1 LD | 5.7 | 54 | 2022 GS | 2022-Apr-02 | 16.2 LD | 5.3 | 26 | 2022 FQ | 2022-Apr-02 | 8 LD | 10.4 | 37 | 2021 GN1 | 2022-Apr-02 | 14.4 LD | 14.3 | 19 | 2022 GL2 | 2022-Apr-02 | 14.8 LD | 12.5 | 66 | 2016 GW221 | 2022-Apr-02 | 9.8 LD | 5.9 | 41 | 2022 FE2 | 2022-Apr-02 | 10 LD | 10.6 | 31 | 2022 FJ1 | 2022-Apr-02 | 16.5 LD | 5 | 27 | 2022 GT1 | 2022-Apr-02 | 11.4 LD | 20.9 | 51 | 2022 FL | 2022-Apr-03 | 8.7 LD | 7.3 | 22 | 2017 WN13 | 2022-Apr-04 | 6.3 LD | 19.5 | 102 | 2022 EN2 | 2022-Apr-04 | 18.7 LD | 5.6 | 37 | 2022 FG3 | 2022-Apr-04 | 12.6 LD | 7.4 | 24 | 2022 GH | 2022-Apr-04 | 6.9 LD | 10.6 | 39 | 2022 FO3 | 2022-Apr-04 | 6.7 LD | 11.3 | 21 | 2012 TV | 2022-Apr-05 | 19.2 LD | 18.1 | 32 | 2022 GN1 | 2022-Apr-06 | 0.3 LD | 15.5 | 10 | 2022 GZ1 | 2022-Apr-06 | 0.6 LD | 11.2 | 6 | 2022 GA2 | 2022-Apr-07 | 1 LD | 8.1 | 5 | 2022 GO | 2022-Apr-07 | 15 LD | 9.6 | 26 | 2022 GQ1 | 2022-Apr-07 | 0.6 LD | 7.8 | 9 | 2022 GP1 | 2022-Apr-07 | 4.5 LD | 6.6 | 16 | 2022 GP | 2022-Apr-08 | 2.3 LD | 17.6 | 19 | 2022 GX | 2022-Apr-08 | 3.8 LD | 12.9 | 13 | 2022 GG2 | 2022-Apr-08 | 1.9 LD | 5.5 | 6 | 2022 GK2 | 2022-Apr-08 | 4 LD | 25 | 27 | 2022 GT | 2022-Apr-09 | 12.4 LD | 4.9 | 16 | 2022 GY1 | 2022-Apr-09 | 6.8 LD | 10.5 | 39 | 2022 FU4 | 2022-Apr-09 | 8.3 LD | 4.7 | 13 | 2022 GE2 | 2022-Apr-10 | 12.2 LD | 9.1 | 14 | 2020 GH1 | 2022-Apr-10 | 17.9 LD | 7.2 | 28 | 2022 FT3 | 2022-Apr-10 | 19.8 LD | 11 | 22 | 2022 GO2 | 2022-Apr-10 | 3 LD | 9 | 10 | 2017 TO2 | 2022-Apr-10 | 17.9 LD | 11.6 | 78 | 363599 | 2022-Apr-12 | 19.3 LD | 24.5 | 221 | 2022 FR3 | 2022-Apr-14 | 18.3 LD | 8.4 | 93 | 2020 TQ6 | 2022-Apr-18 | 13.4 LD | 15.4 | 43 | 2022 FN3 | 2022-Apr-19 | 15.1 LD | 6.3 | 39 | 2017 UR2 | 2022-Apr-22 | 19.4 LD | 9.3 | 10 | 2020 VN1 | 2022-Apr-25 | 19.3 LD | 2.3 | 9 | 418135 | 2022-Apr-28 | 8.5 LD | 10.4 | 443 | 2017 XO2 | 2022-May-01 | 18.8 LD | 12.4 | 118 | 2017 HG1 | 2022-May-04 | 18.2 LD | 6 | 11 | 467460 | 2022-May-09 | 14.9 LD | 11.3 | 513 | 2019 JE | 2022-May-11 | 4.9 LD | 7.2 | 20 | 2012 UX68 | 2022-May-15 | 2.8 LD | 8.2 | 54 | 388945 | 2022-May-15 | 15 LD | 8.2 | 287 | 2013 UX | 2022-May-17 | 16.8 LD | 16.3 | 141 | 2021 WY | 2022-May-18 | 16.9 LD | 9 | 65 | 7335 | 2022-May-27 | 10.5 LD | 13.1 | 1108 | 2021 KO2 | 2022-May-30 | 3.1 LD | 14.8 | 9 | 2020 DA4 | 2022-Jun-01 | 5.5 LD | 8.9 | 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 | SPACE WEATHER BALLOON DATA: Almost 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 sensors that detect secondary cosmic rays, a form of radiation from space that can penetrate all the way down to Earth's surface. Our monitoring program has been underway without interruption for 7 years, resulting in a unique dataset of in situ atmospheric measurements. Latest results (Nov. 2021): Our balloons have just measured a sudden drop in atmospheric radiation. It happened during the strong geomagnetic storms of Nov. 3-4, 2021. Here are the data: This is called a "Forbush decrease," named after American physicist Scott Forbush who studied cosmic rays in the early 20th century. It happens when a CME from the sun sweeps past Earth and literally pushes cosmic rays away from our planet. Radiation from deep space that would normally pepper Earth's upper atmosphere is briefly wiped out. We have measured Forbush decreases before. For example, here's one from Sept. 2014. The Forbush Decrease of Nov. 3-4, 2021, was the deepest in the history of our 7-year atmospheric monitoring program. Radiation levels in the stratosphere over California dropped nearly 20%, more than doubling the previous record from our dataset. En route to the stratosphere, our sensors also pass through aviation altitudes, so we can sample radiation where planes fly. This plot shows how the Forbush decrease was restricted to the stratosphere; it did not affect lower levels of the atmosphere: The dose rates shown above are expressed 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 higher you fly, the more radiation you will absorb. .Who cares? Cosmic rays are a surprisingly "down to Earth" form of space weather. They can seed clouds, trigger lightning, and penetrate commercial airplanes. According to a study from the Harvard T.H. Chan school of public health, crews of aircraft have higher rates of cancer than the general population. The researchers listed cosmic rays, irregular sleep habits, and chemical contaminants as leading risk factors. Somewhat more controversial studies (#1, #2, #3, #4) link cosmic rays with cardiac arrhythmias and sudden cardiac death. .Technical notes: 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. Data points in the first graph ("Stratospheric Radiation") correspond to the peak of the Regener-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 Regener 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. | | information about sunspots based on the latest NOAA/USAF Active Region Summary | | from the NOAA Space Environment Center | | 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 | | Going above and beyond to provide the best homes listings in the Comox real estate market to keep you up to date and informed | | BestCSGOGambling is the best site for everything related to CSGO gambling on the web | | To find reviews of new online casino sites in the UK try The Casino DB where there are hundreds of online casino reviews complete with bonuses and ratings. 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