{"id":800487,"date":"2026-02-03T10:55:29","date_gmt":"2026-02-03T15:55:29","guid":{"rendered":"https:\/\/spaceweekly.com\/?p=800487"},"modified":"2026-02-03T10:55:29","modified_gmt":"2026-02-03T15:55:29","slug":"x1-5-solar-flare-erupts-from-region-4366-fifth-x-class-since-february-1","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=800487","title":{"rendered":"X1.5 solar flare erupts from Region 4366, fifth X-class since February 1"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div xmlns:default=\"http:\/\/www.w3.org\/2000\/svg\">\n<p>An X1.5 solar flare erupted from active region AR 4366, positioned at N14E14, beginning at 13:58 UTC, peaking at 14:08 UTC, and ending at 14:18 UTC on February 3.<\/p>\n<p>There were no confirmed radio signatures detected that would suggest a coronal mass ejection (CME) was produced. Radio frequencies were forecast to be most degraded over the Atlantic Ocean and South America.<\/p>\n<p>This was the fifth X-class solar flare since February 1, continuing a series of major eruptions from the same region. AR 4366 produced X1.0 and X8.1 events on February 1, X2.8 and X1.6 on February 2, and the current X1.5 on February 3. Five high-energy events in less than 60 hours make AR 4366 one of the most active regions of Solar Cycle 25 so far.<\/p>\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\">\n<div class=\"wp-block-embed__wrapper\">\n<div class=\"perfmatters-lazy-youtube\" data-src=\"https:\/\/www.youtube.com\/embed\/q646_BbZxX0\" data-id=\"q646_BbZxX0\" data-query=\"feature=oembed\" onclick=\"perfmattersLazyLoadYouTube(this);\">\n<div><\/div>\n<\/div>\n<p><noscript><iframe loading=\"lazy\" title=\"X1.5 solar flare from AR 4366 \u2013 SDO AIA 304\u00c5 \u2013 February 3 2026\" width=\"1110\" height=\"624\" src=\"https:\/\/www.youtube.com\/embed\/q646_BbZxX0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/noscript>\n<\/div>\n<\/figure>\n<p>Optical and EUV imagery from SDO show AR 4366 as a large, complex \u2018beta-gamma-delta\u2019 sunspot group spanning about 730 millionths of the solar disk with 45 visible spots. The region maintains intense magnetic shear and mixed polarities, favoring continued major flare activity as it approaches the central meridian.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"935\" height=\"675\" alt=\"active region 4366 february 3 2026 b\" class=\"wp-image-242372 perfmatters-lazy\" src=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/active-region-4366-february-3-2026-b.webp\" srcset=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/active-region-4366-february-3-2026-b.webp 935w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/active-region-4366-february-3-2026-b-300x217.webp 300w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/active-region-4366-february-3-2026-b-768x554.webp 768w\" data-sizes=\"(max-width: 935px) 100vw, 935px\"\/><img loading=\"lazy\" decoding=\"async\" width=\"935\" height=\"675\" src=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/active-region-4366-february-3-2026-b.webp\" alt=\"active region 4366 february 3 2026 b\" class=\"wp-image-242372\" srcset=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/active-region-4366-february-3-2026-b.webp 935w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/active-region-4366-february-3-2026-b-300x217.webp 300w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/active-region-4366-february-3-2026-b-768x554.webp 768w\" sizes=\"auto, (max-width: 935px) 100vw, 935px\"\/><figcaption class=\"wp-element-caption\">Active Region 4366 on February 3, 2026. Credit: NASA SDO\/HMIBC<\/figcaption><\/figure>\n<\/div>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" alt=\"sunspots on february 3 2026\" class=\"wp-image-242345 perfmatters-lazy\" src=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026.webp\" srcset=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026.webp 1024w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026-300x300.webp 300w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026-150x150.webp 150w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026-768x768.webp 768w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026-600x600.webp 600w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026-70x70.webp 70w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\"\/><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026.webp\" alt=\"sunspots on february 3 2026\" class=\"wp-image-242345\" srcset=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026.webp 1024w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026-300x300.webp 300w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026-150x150.webp 150w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026-768x768.webp 768w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026-600x600.webp 600w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/sunspots-on-february-3-2026-70x70.webp 70w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><figcaption class=\"wp-element-caption\">Sunspots on February 3, 2026. Credit: NASA\/SDO HMI<\/figcaption><\/figure>\n<\/div>\n<p>A coronal mass ejection (CME) from the X8.1 flare at 23:57 UTC on February 1 is already en route to Earth. SWPC models and independent forecasts indicate its outer edge will glance Earth late on February 5, causing G1 \u2013 Minor geomagnetic storm conditions and possible auroral activity poleward of 60\u00b0 geomagnetic latitude. <\/p>\n<p>Under G1 conditions, minor power-grid fluctuations and auroral visibility in northern U.S. states such as Michigan and Maine are possible.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" alt=\"cme produced by x8.1 solar flare on february 1 2026 lasco c3\" class=\"wp-image-242346 perfmatters-lazy\" src=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/cme-produced-by-x8.1-solar-flare-on-february-1-2026-lasco-c3.webp\" srcset=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/cme-produced-by-x8.1-solar-flare-on-february-1-2026-lasco-c3.webp 1024w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/cme-produced-by-x8.1-solar-flare-on-february-1-2026-lasco-c3-300x150.webp 300w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/cme-produced-by-x8.1-solar-flare-on-february-1-2026-lasco-c3-768x384.webp 768w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\"\/><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/cme-produced-by-x8.1-solar-flare-on-february-1-2026-lasco-c3.webp\" alt=\"cme produced by x8.1 solar flare on february 1 2026 lasco c3\" class=\"wp-image-242346\" srcset=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/cme-produced-by-x8.1-solar-flare-on-february-1-2026-lasco-c3.webp 1024w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/cme-produced-by-x8.1-solar-flare-on-february-1-2026-lasco-c3-300x150.webp 300w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/cme-produced-by-x8.1-solar-flare-on-february-1-2026-lasco-c3-768x384.webp 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"\/><figcaption class=\"wp-element-caption\">Coronal mass ejection (CME) produced by X8.1 solar flare on February 1, 2026. Credit: NASA\/ESA SOHO LASCO C3, The Watchers<\/figcaption><\/figure>\n<\/div>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"600\" alt=\"enlil cme impact forecast february 5 2026\" class=\"wp-image-242348 perfmatters-lazy\" src=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/enlil-cme-impact-forecast-february-5-2026.webp\" srcset=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/enlil-cme-impact-forecast-february-5-2026.webp 960w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/enlil-cme-impact-forecast-february-5-2026-300x188.webp 300w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/enlil-cme-impact-forecast-february-5-2026-768x480.webp 768w\" data-sizes=\"(max-width: 960px) 100vw, 960px\"\/><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"600\" src=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/enlil-cme-impact-forecast-february-5-2026.webp\" alt=\"enlil cme impact forecast february 5 2026\" class=\"wp-image-242348\" srcset=\"https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/enlil-cme-impact-forecast-february-5-2026.webp 960w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/enlil-cme-impact-forecast-february-5-2026-300x188.webp 300w, https:\/\/watchers.news\/wp-content\/uploads\/2026\/02\/enlil-cme-impact-forecast-february-5-2026-768x480.webp 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\"\/><figcaption class=\"wp-element-caption\">Image credit: SWPC<\/figcaption><\/figure>\n<p>No significant solar-energetic-particle enhancement has been observed so far; proton flux remains below alert thresholds as of 15:20 UTC.<\/p>\n<p>AR 4366 continues to rotate toward the center of the solar disk, maintaining a favourable position for potential Earth-directed activity in the days ahead.<\/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\/2026\/02\/03\/x1-5-solar-flare-erupts-from-region-4366-fifth-x-class-since-february-1\/?rand=772108\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>An X1.5 solar flare erupted from active region AR 4366, positioned at N14E14, beginning at 13:58 UTC, peaking at 14:08 UTC, and ending at 14:18 UTC on February 3. There&hellip; <\/p>\n","protected":false},"author":1,"featured_media":800488,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-800487","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\/800487","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=800487"}],"version-history":[{"count":0,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/800487\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/media\/800488"}],"wp:attachment":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=800487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=800487"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=800487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}