{"id":795453,"date":"2025-04-18T18:35:10","date_gmt":"2025-04-18T23:35:10","guid":{"rendered":"https:\/\/spaceweekly.com\/?p=795453"},"modified":"2025-04-18T18:35:10","modified_gmt":"2025-04-18T23:35:10","slug":"the-arrl-solar-report-11","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=795453","title":{"rendered":"The ARRL Solar Report"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div>\n\t\t\t\t\t<span class=\"date\">04\/18\/2025<\/span><\/p>\n<p><span>Spaceweather.com reports a Cannibal Coronal Mass Ejection on April 15 sparked geomagnetic storms.<span>\u00a0 <\/span>On April 16, the storm became severe (G4) with Northern Lights sighted as far south as France.<span>\u00a0 <\/span>The storm is subsiding now to a category G1\/G2, which could still produce high-latitude auroras. <\/span><\/p>\n<p><span>Although Regions AR4062 and AR4064 have been relatively quiet they are more structurally complex than anticipated.<span>\u00a0 <\/span>They will maintain a 60 chance for R1-R2 (Minor-Moderate) flare activity through April 19.<span>\u00a0 <\/span>Chances for X-class (Strong) flare activity remain around 10. <\/span><\/p>\n<p><span>Unsettled to active levels are expected on April 18 followed by quiet to unsettled conditions on April 19. <\/span><\/p>\n<p><span>Solar activity is expected to be at moderate to high levels on April 27 to May 10 with the return of Region AR4055.<span>\u00a0 <\/span>Low to moderate levels are expected for the remainder of the outlook period. Unsettled to active levels are expected on April 18, April 22 and 23, and on May 3 and 4. <\/span><\/p>\n<p><span>G2 (Moderate) storm levels are expected again on May 2 due to recurrent Coronal Hole High-Speed Stream influences.<span>\u00a0 <\/span>G1 (Minor) storm levels are expected on May 1, and May 5 and 6, all due to recurrent Coronal Hole High-Speed Stream activity. <\/span><\/p>\n<p><span>The latest report from Dr. Tamitha Skov, WX6SWW, can be found on YouTube at:  . <\/span><\/p>\n<p><span>The Predicted Planetary A Index for April 19 to 25 is 10, 8, 8, 15, 15, 15, and 10, with a mean of 11.6.<span>\u00a0 <\/span>The Predicted Planetary K Index is 3, 3, 3, 4, 4, 4, and 3, with a mean of 3.4.<span>\u00a0 <\/span>10.7 centimeter flux is 145, 145, 150, 155, 155, 160, and 165, with a mean of 153.6. <\/span><\/p>\n<p><span>For more information concerning shortwave radio propagation, see  and the ARRL Technical Information Service web page at,  <span>\u00a0<\/span><\/span><\/p>\n<p><span>For an explanation of numbers used in this bulletin, see  . Information and tutorials on propagation can be found at,  . <\/span><\/p>\n<p><span>Also, check &#8220;Understanding Solar Indices&#8221; from September 2002 QST at  .<\/span><\/p>\n<\/p><\/div>\n<p><br \/>\n<br \/><a href=\"http:\/\/www.arrl.org\/news\/view\/the-arrl-solar-report-10?rand=771671\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>04\/18\/2025 Spaceweather.com reports a Cannibal Coronal Mass Ejection on April 15 sparked geomagnetic storms.\u00a0 On April 16, the storm became severe (G4) with Northern Lights sighted as far south as&hellip; <\/p>\n","protected":false},"author":1,"featured_media":771673,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-795453","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ARRL"],"_links":{"self":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/795453","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=795453"}],"version-history":[{"count":0,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/795453\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/media\/771673"}],"wp:attachment":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=795453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=795453"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=795453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}