{"id":278735,"date":"2023-09-14T14:53:34","date_gmt":"2023-09-14T12:53:34","guid":{"rendered":"https:\/\/climatescience.press\/?p=278735"},"modified":"2023-09-14T14:53:37","modified_gmt":"2023-09-14T12:53:37","slug":"stealthy-cme-sparks-geomagnetic-storm","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=278735","title":{"rendered":"\u201cStealthy CME\u201d Sparks Geomagnetic\u00a0Storm"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

From Spaceweather.com<\/a><\/p>\n\n\n\n

By DR.TONY PHILLIPS<\/a><\/p>\n\n\n\n

Sept. 13, 2023:<\/strong> (Spaceweather.com<\/a>) An unexpected CME hit<\/a> Earth\u2019s magnetic field on Sept. 12th (1237 UT) and sparked a G2<\/a>-class geomagnetic storm. Magnetically, the CME remained connected to our planet<\/a> for more than 13 hours, allowing plasma from the CME\u2019s wake to enter Earth\u2019s magnetosphere. This fueled a display of auroras photographed as far south as Missouri<\/a> (+40.2N) and Nebraska<\/a> (+40.9N).<\/p>\n\n\n\n

Matthew Merrell knew the storm was underway, and he waited anxiously for the sun to set over his home in central Minnesota. As darkness fell, he saw the auroras:<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

\u201cIt was a great start to the night with pillars visible as soon as the sky was dark enough,\u201d says Merrell. \u201cBy 10:00 pm it was just a gentle glow with very little motion.\u201d<\/p>\n\n\n\n

Merrell witnessed only the subsiding tail-end of the storm, a G1-class event. At its G2 apex, the storm produced \u201cBRIGHT<\/a>\u201d and \u201cstunning<\/a>\u201d activity over Scotland, \u201cmassive rays\u201d above Ireland, and an all-sky explosion of color<\/a> over Iceland. Magnetometer needles in Britain swung wildly with more than 15 hours of dramatic undulations<\/a>.<\/p>\n\n\n\n

Forecasters did not see this coming. One surprised NOAA analyst called it a \u201cstealthy CME.\u201d In retrospect, it was probably one of many relatively bright CMEs that left the sun on Sept. 8th, shown here in a 24 hour time-lapse from the Solar and Heliospheric Observatory (SOHO):<\/p>\n\n\n

\n
\"\"\/<\/a><\/figure>\n<\/div>\n\n\n

When the sun spits out so many storm clouds in such a short period of time, it can be hard to disentangle them and figure out which one(s) might be heading toward Earth. Notably the movie includes a distinct halo CME<\/a>. At the time it was thought to be a farside event, but maybe it is the one that hit Earth yesterday.<\/p>\n\n\n\n

Did you miss the storm?<\/strong> Subscribers to our Space Weather Alert Service<\/a> received instant text messages when the CME arrived and, later, when the geomagnetic storm began. Give it a try<\/a>! Aurora alerts:<\/strong> SMS Text<\/a><\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

(Spaceweather.com) An unexpected CME\u00a0hit\u00a0Earth\u2019s magnetic field on Sept. 12th (1237 UT) and sparked a\u00a0G2-class geomagnetic storm. Magnetically, the CME remained\u00a0connected to our planet\u00a0for more than 13 hours, allowing plasma from the CME\u2019s wake to enter Earth\u2019s magnetosphere. This fueled a display of auroras photographed as far south as\u00a0Missouri\u00a0(+40.2N) and\u00a0Nebraska\u00a0(+40.9N).<\/p>\n","protected":false},"author":121246920,"featured_media":278738,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_crdt_document":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691818961,691822607,691822608,691819062,691822606],"class_list":{"0":"post-278735","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-cme","9":"tag-earths-magnetic-field","10":"tag-g2-class","11":"tag-geomagnetic-storm","12":"tag-geomagnetic-storm-2","14":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/09\/00Matthew-Merrell-9-12-1_1694615910.jpg?fit=3600%2C2400&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1avJ","jetpack-related-posts":[{"id":213009,"url":"https:\/\/climatescience.press\/?p=213009","url_meta":{"origin":278735,"position":0},"title":"Surprise Geomagnetic Storm","author":"uwe.roland.gross","date":"08\/11\/2022","format":false,"excerpt":"Aug. 8, 2022:\u00a0A solar wind stream hit Earth\u2019s magnetic field on August 7th. 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