{"id":354502,"date":"2026-01-21T16:28:02","date_gmt":"2026-01-21T10:58:02","guid":{"rendered":"https:\/\/forumias.com\/blog\/?p=354502"},"modified":"2026-01-21T16:28:02","modified_gmt":"2026-01-21T10:58:02","slug":"g4-geomagnetic-storm","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/g4-geomagnetic-storm\/","title":{"rendered":"G4 Geomagnetic Storm"},"content":{"rendered":"<p><strong>News: <\/strong>Sky-watchers worldwide witnessed breathtaking auroras as a severe G4 geomagnetic storm pushed the dazzling lights far beyond their typical polar regions.<\/p>\n<h2 style=\"text-align: justify\">About G4 Geomagnetic Storm<\/h2>\n<figure style=\"width: 450px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/th.bing.com\/th?id=OIF.Tn1e%2bn7AzYPSr7%2fZEtVezg&amp;w=322&amp;h=181&amp;c=7&amp;r=0&amp;o=7&amp;dpr=1.4&amp;pid=1.7&amp;rm=3\" alt=\" G4 geomagnetic storm\" width=\"450\" height=\"253\" \/><figcaption class=\"wp-caption-text\">Source: Space<\/figcaption><\/figure>\n<ul>\n<li style=\"text-align: justify\"><strong>Geomagnetic Storm: <\/strong>A <strong>geomagnetic storm<\/strong> is a <strong>severe disturbance of Earth\u2019s magnetosphere.<\/strong><\/li>\n<li style=\"text-align: left\"><strong>How it is caused:<\/strong>\u00a0<strong>Energy produced by nuclear fusion in the Sun<\/strong>\u00a0is\u00a0<strong>released as sunlight, radiation, and charged particles.<\/strong>\n<ul>\n<li style=\"text-align: left\">These charged particles constantly flow away from the Sun as the solar wind.<\/li>\n<li>Sometimes,\u00a0<strong>the Sun releases large clouds of plasma called coronal mass ejections.<\/strong><\/li>\n<li>When these charged particles or plasma<strong>\u00a0reach Earth, they collide with Earth\u2019s magnetic field.\u00a0\u00a0<\/strong><\/li>\n<li>This <strong>disturbs the magnetic field<\/strong> and <strong>causes a geomagnetic storm<\/strong>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Favourable conditions<\/strong>:\n<ul>\n<li>Geomagnetic storms occur when the solar wind blows toward Earth\u00a0<strong>at a very high speed for several hours.<\/strong><\/li>\n<li>\u00a0A\u00a0<strong>southward directed solar wind magnetic field<\/strong>\u00a0(opposite the direction of Earth\u2019s field) at the dayside of the magnetosphere.<\/li>\n<\/ul>\n<\/li>\n<li style=\"text-align: justify\"><strong>Classification:<\/strong> Geomagnetic storms are classified on the <strong>G-scale<\/strong>, ranging from <strong>G1 (minor)<\/strong> to <strong>G5 (extreme)<\/strong>.\n<ul>\n<li>A <strong>G4 storm<\/strong> falls under the <strong>severe category<\/strong>, indicating intense geomagnetic activity.<\/li>\n<\/ul>\n<\/li>\n<li style=\"text-align: justify\"><strong>Impacts<\/strong>\n<ul>\n<li>G4 geomagnetic storms can cause <strong>serious disturbances in satellite operations.<\/strong><\/li>\n<li><strong>Power systems<\/strong> <strong>may experience voltage instability<\/strong> and increased risk of damage.<\/li>\n<li><strong>Radio communications<\/strong>, especially on the sunlit side of Earth, can be disrupted.<\/li>\n<li><strong>GPS and navigation systems<\/strong> may show reduced accuracy during the storm.<\/li>\n<li style=\"text-align: justify\"><strong>Auroral Effects:<\/strong> During strong geomagnetic storms, <strong>the auroral oval expands, allowing auroras to be visible at much lower latitudes than usual.<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>News: Sky-watchers worldwide witnessed breathtaking auroras as a severe G4 geomagnetic storm pushed the dazzling lights far beyond their typical polar regions. About G4 Geomagnetic Storm Geomagnetic Storm: A geomagnetic storm is a severe disturbance of Earth\u2019s magnetosphere. How it is caused:\u00a0Energy produced by nuclear fusion in the Sun\u00a0is\u00a0released as sunlight, radiation, and charged particles.&hellip; <a class=\"more-link\" href=\"https:\/\/forumias.com\/blog\/g4-geomagnetic-storm\/\">Continue reading <span class=\"screen-reader-text\">G4 Geomagnetic Storm<\/span><\/a><\/p>\n","protected":false},"author":10366,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[1566,1738,12039],"tags":[11872,400],"class_list":["post-354502","post","type-post","status-publish","format-standard","hentry","category-daily-factly-articles","category-science-and-technology-daily-factly-articles","category-knolls","tag-9pm-daily-factly","tag-space","entry"],"jetpack_featured_media_url":"","views":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/354502","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/users\/10366"}],"replies":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/comments?post=354502"}],"version-history":[{"count":0,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/354502\/revisions"}],"wp:attachment":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media?parent=354502"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/categories?post=354502"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/tags?post=354502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}