UPDATED 10:30 P.M. EDT:<\/strong><\/p>\nI just received this update from the Forecast Center:<\/p>\n
Product: 3-Day Forecast\r\nIssued: 2018 Sep 11 0030 UTC\r\nPrepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction\r\nCenter\r\n\r\nA. NOAA Geomagnetic Activity Observation and Forecast\r\n\r\nThe greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale\r\nG1).\r\nThe greatest expected 3 hr Kp for Sep 11-Sep 13 2018 is 6 (NOAA Scale\r\nG2).\r\n\r\nNOAA Kp index breakdown Sep 11-Sep 13 2018\r\n\r\n Sep 11 Sep 12 Sep 13\r\n00-03UT 5 (G1) 4 3 \r\n03-06UT 6 (G2) 5 (G1) 4 \r\n06-09UT 5 (G1) 4 3 \r\n09-12UT 4 3 2 \r\n12-15UT 4 2 2 \r\n15-18UT 3 2 2 \r\n18-21UT 3 2 2 \r\n21-00UT 4 2 2 \r\n\r\nRationale: The geomagnetic field will likely reach G2 (Moderate) levels\r\non day one( 11 Sep) as a result of a positive polarity CH HSS. Activity\r\nis expected to taper some by day two (12 Sep), but G1 (Minor) storm\r\nconditions are still likely. Day three (13 Sep) is expected to be a day\r\nof transition, with G1 conditions becoming less likely.<\/pre>\nGuest Post by Troy Riedel – career retired Veteran, educated Synoptic Meteorologist & an amateur astronomer hobbyist who likes to also “play shortwave”.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"From Spaceweather.com: “NOAA forecasters say there is an 80% chance of minor\u00a0G1-class\u00a0geomagnetic storms on\u00a0Sept. 11th\u00a0when a stream of solar wind is expected to hit Earth’s magnetic field …\u00a0There’s a chance that the storm could intensify to category G2 (moderately strong).” Image: Solar Wind flowing from this canyon shaped coronal hole could reach Earth on September […]<\/p>\n","protected":false},"author":73,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":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}},"categories":[1],"tags":[4107,428,4581],"class_list":["post-34083","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-space-weather","tag-space-weather-prediction-center","tag-troy-riedel"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-8RJ","jetpack-related-posts":[{"id":6805,"url":"https:\/\/swling.com\/blog\/2013\/06\/geomagnetic-storms-in-weekend-forecast\/","url_meta":{"origin":34083,"position":0},"title":"Geomagnetic storms in weekend forecast","author":"Thomas","date":"June 29, 2013","format":false,"excerpt":"Heads up! Geomagnetic storms may make it a challenge to hear the test broadcast of Hamburger Lokalradio this weekend or any shortwave broadcaster for that matter. Full details at Spaceweather.com and the ARRL (below): (Source: ARRL) Spaceweather.com\u00a0reports a strong geomagnetic storm is in progress as Earth passes through a region\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"(Source: SpaceWeather.com)","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2012\/01\/CMEm9-300x300.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":58927,"url":"https:\/\/swling.com\/blog\/2024\/02\/solar-radiation-storms-and-cannibal-cmes\/","url_meta":{"origin":34083,"position":1},"title":"Solar Radiation Storms and Cannibal CMEs","author":"Thomas","date":"February 13, 2024","format":false,"excerpt":"Many thanks to SWLing Post contributor, Troy Riede, who shares the following news from Spaceweather.com: Spaceweather.com SOLAR RADIATION STORM--NOW: For the second time in less than a week, energetic solar protons are raining down on Earth's upper atmosphere. Forecasters call this a \"solar radiation storm.\" Today's storm (near category S2)\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/02\/unnamed-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":33757,"url":"https:\/\/swling.com\/blog\/2018\/08\/surprise-sunspot-group-g-3-geomagnetic-storm-now\/","url_meta":{"origin":34083,"position":2},"title":"Surprise sunspot group & G-3 Geomagnetic Storm (Now!)","author":"Troy Riedel","date":"August 26, 2018","format":false,"excerpt":"As an avid amateur astronomer, solar observation has been quite boring during 2018.\u00a0 As a shortwave radio enthusiast, the lack of solar activity has impacted that hobby as well. Well, the catchword of the day is \u201csurprise\u201d! I was alerted yesterday evening by Spaceweather.com that a large sunspot had emerged\u2026","rel":"","context":"In \"spaceweather\"","block_context":{"text":"spaceweather","link":"https:\/\/swling.com\/blog\/tag\/spaceweather\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/08\/Sunspots.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/08\/Sunspots.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/08\/Sunspots.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/08\/Sunspots.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":29469,"url":"https:\/\/swling.com\/blog\/2017\/12\/geomagnetic-storm-predicted-g2-class\/","url_meta":{"origin":34083,"position":3},"title":"Geomagnetic Storm Predicted (G2-Class)","author":"Troy Riedel","date":"December 4, 2017","format":false,"excerpt":"Per spaceweather.com & NOAA's Space Weather Prediction Center (SWPC): \"A high-speed stream of solar wind is approaching Earth, and NOAA forecasters say there is a 75% chance of polar geomagnetic storms when it arrives during the late hours of Dec. 4th. Periods of moderately-strong G2-class storming on Dec. 4th and\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/12\/GeomagneticStormAurora-300x169.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":31539,"url":"https:\/\/swling.com\/blog\/2018\/04\/space-weather-a-big-hole-in-the-suns-atmosphere\/","url_meta":{"origin":34083,"position":4},"title":"Space Weather: A [big] Hole in the Sun’s Atmosphere","author":"Troy Riedel","date":"April 6, 2018","format":false,"excerpt":"The SWLing Post Blog has recently featured a few posts on \"Space Weather\" & Geomagnetic Storms. As an amateur astronomer, I receive many daily space-related emails in my INBOX right along with the SWLing Post Daily Digest. I thought this might be of interest: From Spaceweather.com An unusually wide hole\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/04\/Solar-Wind.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":59351,"url":"https:\/\/swling.com\/blog\/2024\/03\/a-large-cme-could-bring-g3-class-geomagnetic-storms\/","url_meta":{"origin":34083,"position":5},"title":"A large CME could bring G3-class geomagnetic storms","author":"Thomas","date":"March 23, 2024","format":false,"excerpt":"Many thanks to SWLing Post contributor, Troy Riedel, who shares the following news from Spaceweather.com: A BIG CME IS COMING:\u00a0This morning's X1-class solar flare hurled a bright CME toward Earth. NASA\u00a0and\u00a0NOAA models\u00a0agree that the storm cloud should reach our planet by the early hours of March 25th. A direct hit\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/03\/CME-1.jpeg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/34083","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/users\/73"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=34083"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/34083\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=34083"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=34083"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=34083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"http:\/\/spaceweather.com\/glossary\/g1.jpg\")
<\/a><\/p>\n