{"id":799580,"date":"2025-12-07T07:12:29","date_gmt":"2025-12-07T12:12:29","guid":{"rendered":"https:\/\/spaceweekly.com\/?p=799580"},"modified":"2025-12-07T07:12:29","modified_gmt":"2025-12-07T12:12:29","slug":"g3-strong-geomagnetic-storm-forecast-following-earth-directed-cme-produced-by-m8-1-solar-flare","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=799580","title":{"rendered":"G3 \u2013 Strong geomagnetic storm forecast following Earth-directed CME produced by M8.1 solar flare"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div xmlns:default=\"http:\/\/www.w3.org\/2000\/svg\">\n<p>The U.S. National Oceanic and Atmospheric Administration (NOAA) Space Weather Prediction Center (SWPC) issued the G3 \u2013 Strong Geomagnetic Storm Watch at 04:43 UTC on December 7.<\/p>\n<p>The forecast covers December 8\u201310, with G1 \u2013 Minor storming predicted on December 8, G3 \u2013 Strong on December 9, and G1 \u2013 Minor again on December 10. This watch supersedes all prior alerts in effect.<\/p>\n<p>The warning follows an M8.1 solar flare that erupted from Active Region 4299, located near the center of the solar disk, at 20:39 UTC on December 6. The event produced a full-halo CME, indicating an Earth-directed trajectory.<\/p>\n<p>NOAA\u2019s WSA\u2013ENLIL CME model, initialized at 22:00 UTC, shows the CME impacting Earth\u2019s magnetosphere between early and midday UTC on December 9, likely triggering G3 \u2013 Strong geomagnetic storming.<\/p>\n<figure class=\"wp-block-video aligncenter\"><video height=\"960\" style=\"aspect-ratio: 1920 \/ 960;\" width=\"1920\" controls=\"\" loop=\"\" playsinline=\"\" class=\"perfmatters-lazy\" data-src=\"https:\/\/watchers.news\/wp-content\/uploads\/2025\/12\/m8.1-solar-flare-december-6-2025.webm\"\/><noscript><video height=\"960\" style=\"aspect-ratio: 1920 \/ 960;\" width=\"1920\" controls=\"\" loop=\"\" src=\"https:\/\/watchers.news\/wp-content\/uploads\/2025\/12\/m8.1-solar-flare-december-6-2025.webm\" playsinline=\"\"\/><\/noscript><figcaption class=\"wp-element-caption\">M8.1 solar flare on December 6, 2025. Credit: NASA\/SDO, Helioviewer, The Watchers<\/figcaption><\/figure>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><figcaption class=\"wp-element-caption\">Image credit: NASA\/ESA LASCO C3<\/figcaption><\/figure>\n<\/div>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"958\" height=\"596\" alt=\"wsa enlil cme impact forecast model run 22z december 6 2025\" class=\"wp-image-239333 perfmatters-lazy\" src=\"https:\/\/watchers.news\/wp-content\/uploads\/2025\/12\/wsa-enlil-cme-impact-forecast-model-run-22z-december-6-2025.webp\" srcset=\"https:\/\/watchers.news\/wp-content\/uploads\/2025\/12\/wsa-enlil-cme-impact-forecast-model-run-22z-december-6-2025.webp 958w, https:\/\/watchers.news\/wp-content\/uploads\/2025\/12\/wsa-enlil-cme-impact-forecast-model-run-22z-december-6-2025-300x187.webp 300w, https:\/\/watchers.news\/wp-content\/uploads\/2025\/12\/wsa-enlil-cme-impact-forecast-model-run-22z-december-6-2025-768x478.webp 768w\" data-sizes=\"(max-width: 958px) 100vw, 958px\"\/><img loading=\"lazy\" decoding=\"async\" width=\"958\" height=\"596\" src=\"https:\/\/watchers.news\/wp-content\/uploads\/2025\/12\/wsa-enlil-cme-impact-forecast-model-run-22z-december-6-2025.webp\" alt=\"wsa enlil cme impact forecast model run 22z december 6 2025\" class=\"wp-image-239333\" srcset=\"https:\/\/watchers.news\/wp-content\/uploads\/2025\/12\/wsa-enlil-cme-impact-forecast-model-run-22z-december-6-2025.webp 958w, https:\/\/watchers.news\/wp-content\/uploads\/2025\/12\/wsa-enlil-cme-impact-forecast-model-run-22z-december-6-2025-300x187.webp 300w, https:\/\/watchers.news\/wp-content\/uploads\/2025\/12\/wsa-enlil-cme-impact-forecast-model-run-22z-december-6-2025-768x478.webp 768w\" sizes=\"auto, (max-width: 958px) 100vw, 958px\"\/><figcaption class=\"wp-element-caption\">Image credit: SWPC<\/figcaption><\/figure>\n<p>The affected geomagnetic latitude is expected to be poleward of 50\u00b0, where storm-induced disturbances may cause voltage fluctuations in power networks and false triggers in protection systems.<\/p>\n<p>Low-Earth orbit satellites may experience increased drag and surface charging, while navigation systems (GPS) could encounter intermittent signal degradation or temporary loss of lock. HF radio propagation may also become irregular during peak activity.<\/p>\n<p>Auroral activity is expected to intensify significantly during the storm\u2019s main phase on December 9, with possible visibility extending as far south as Pennsylvania, Iowa, and Oregon under clear skies.<\/p>\n<p>SWPC forecasts a 70% chance of additional M-class and 15% chance of X-class flares through December 8.<\/p>\n<p><!-- MOLONGUI AUTHORSHIP PLUGIN 5.1.0 --><br \/>\n<!-- https:\/\/www.molongui.com\/wordpress-plugin-post-authors --><\/p>\n<\/div>\n<p><br \/>\n<br \/><a href=\"https:\/\/watchers.news\/2025\/12\/07\/g3-strong-geomagnetic-storm-forecast-following-earth-directed-cme-produced-by-m8-1-solar-flare\/?rand=772108\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The U.S. National Oceanic and Atmospheric Administration (NOAA) Space Weather Prediction Center (SWPC) issued the G3 \u2013 Strong Geomagnetic Storm Watch at 04:43 UTC on December 7. The forecast covers&hellip; <\/p>\n","protected":false},"author":1,"featured_media":799581,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-799580","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-space-weather-reports"],"_links":{"self":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/799580","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=799580"}],"version-history":[{"count":0,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/799580\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/media\/799581"}],"wp:attachment":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=799580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=799580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=799580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}