The Noaa space weather bulletin: “minor” phenomena on July 22, “moderate” on the 23rd
Following the recent coronal mass ejection (CME) solar activity, the American National Administration for the Ocean and the Atmosphere (Noaa) has extended the alert on possible geomagnetic storm phenomena that could affect the Earth in the next 2 days . In particular – we read in the space weather bulletin of the federal agency that is interested in oceanography, meteorology and climatology – “minor” phenomena are expected for the day of 22 July caused by two high-speed flows of coronal holes, and “moderate” for July 23 following a solar flare on July 21.
A Cme is a vast expulsion of plasma from the solar corona. The ejected material, mainly electrons and protons, is dragged by the magnetic field of the corona at speeds between 250 and 3000 kilometers per second. When this cloud reaches Earth it can disturb its magnetosphere, causing intense aurora phenomena, interference with radio transmissions, power outages and damage to satellites and power lines.
In the video, a timelapse of the sun setting in Ronda, Spain, on July 21st.