NOAA analysts are modeling them now to see if any will hit Earth. The explosions have also hurled some faint CMEs into space. If this continues, ham radio operators may notice frequent loss of signal and other propagation effects at frequencies below 15 MHz. That's how often sunspot AR3380 has been exploding:Įxtreme ultraviolet flashes from this sunspot have been ionizing the top of Earth's atmosphere, causing a series of shortwave radio blackouts around all longitudes of our planet. 3 hours from now there should be another M-class solar flare. Aurora alerts: SMS TextĪCTIVE SUNSPOT: Set your watch. If the CME is still en route, its late arrival would spark no more than a minor G1-class geomagnetic storm on Aug. There is a hint of a weak near miss in solar wind data yesterday at 1600 UT it was not geoeffective. NO IMPACT: A CME expected to hit Earth's magnetic field on Aug. 28, 2023, as a show of thanks for years of service and hope for future daisies: Until then, we will maintain AIM's iconic "daily daisy," frozen at Feb. There may be some hope of a recovery as AIM's orbit precesses into full sunlight in 2024. As a result AIM is offline, perhaps permanently. What happened to NASA's AIM spacecraft, which has been monitoring NLCs since 2007? Earlier this year, the spacecraft's battery failed. ![]() As the season progresses, these dots will multiply in number and shift in hue from blue to red as the brightness of the clouds intensifies. For the rest of the season, daily maps from NOAA 21 will be presented here:Įach dot is a detected cloud. An instrument onboard NOAA 21 ( OMPS LP) is able to detect NLCs (also known as "polar mesospheric clouds" or PMCs). ![]() The first clouds were detected inside the Arctic Circle by the NOAA 21 satellite. The northern season for NLCs began on May 26th. There are no significant equatorial coronal holes on the Earthside of the sun. ![]() Switch to: Europe, USA, New Zealand, Antarctica Neutron counts from the University of Oulu's Sodankyla Geophysical Observatory show that cosmic rays reaching Earth are slowly declining-a result of the yin-yang relationship between the solar cycle and cosmic rays. Credit: SDO/HMIĬosmic Rays Solar Cycle 25 is intensifying, and this is reflected in the number of cosmic rays entering Earth's atmosphere. ![]() Sunspot AR3380 poses a continued threat for M-class solar flares.
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