{"id":781143,"date":"2024-04-20T00:26:51","date_gmt":"2024-04-20T05:26:51","guid":{"rendered":"http:\/\/spaceweekly.com\/?p=781143"},"modified":"2024-04-20T00:26:51","modified_gmt":"2024-04-20T05:26:51","slug":"cme-impact-sparks-unexpected-g3-strong-geomagnetic-storm-red-aurora-in-missouri-u-s","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=781143","title":{"rendered":"CME impact sparks unexpected G3 – Strong geomagnetic storm, red aurora in Missouri, U.S."},"content":{"rendered":"


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Solar wind conditions became enhanced beginning at 04:13 UTC on April 19, 2024, due to coronal mass ejection (CME) impact, resulting in unexpected G3 \u2013 Strong geomagnetic storming just before 20:00 UTC.<\/strong><\/p>\n

Following the CME arrival, total field strength reached 18 nT and the Bz component was sustained southward after 04:10 UTC with a peak of -17 nT observed, according to the SWPC.<\/p>\n

Geomagnetic K-index of 4 threshold was reached at 07:50 UTC, followed by K-index of 5 (G1 \u2013 Minor geomagnetic storm) at 14:15 UTC. Geomagnetic K-index of 6 threshold (G2 \u2013 Moderate geomagnetic storm) was reached at 19:40 UTC, followed by K-index of 7 (G3 \u2013 Strong geomagnetic storm) threshold at 19:52 UTC.<\/p>\n

Under G3 \u2013 Strong geomagnetic storm conditions (impact is primarily poleward of 50 degrees Geomagnetic Latitude), power system voltage irregularities are possible, and false alarms may be triggered on some protection devices. Spacecraft systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur. Intermittent satellite navigation (GPS) problems are likely, including loss-of-lock and increased range error. HF (high frequency) radio may be intermittent and aurora may be seen as low as Pennsylvania to Iowa to Oregon.<\/p>\n

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While the strong storm was brief, it managed to produce impactful auroras, including red auroras as far south as Iowa and Missouri. Northern lights were also sighted across Europe, with reports coming in from Bled, Slovenia, and even Corsica in the Mediterranean Sea. Additionally, red aurora was also seen and captured from Tasmania.<\/p>\n

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Surreal red #Auroraborealis<\/a> visible to the naked eye this morning in Iowa. Unforgettable experience.
Cedar Falls, Iowa
April 19, 2024, 04:38 \u2013 05:03 CDT@TamithaSkov<\/a> @Vincent_Ledvina<\/a> @theauroraguy<\/a> @StrmchsrHunterF<\/a> @landon_wx<\/a>
*enhanced quality#aurora<\/a> #northernlights<\/a> #iawx<\/a> pic.twitter.com\/5MPlBpOl8H<\/a><\/p>\n

\u2014 Igor Arkadiev (@Arkadiev) April 19, 2024<\/a><\/p><\/blockquote>\n

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The aurora drought finally ended this morning! Incredible colors from Watertown, South Dakota!<\/p>\n

Shoutout to @StrmchsrHunterF<\/a> for telling me to run out to the field at work as this substorm exploded. Wish I had my digital camera with me!#sdwx<\/a> #aurora<\/a> pic.twitter.com\/36Jr0RJjv2<\/a><\/p>\n

\u2014 Alex Resel (@aresel_) April 19, 2024<\/a><\/p><\/blockquote>\n

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Aurora in Bled, Slovenia right now! #aurora<\/a> #Auroraborealis<\/a> pic.twitter.com\/Gi0HFpgD9g<\/a><\/p>\n

\u2014 Simon Zupan (@ZupanPhoto) April 19, 2024<\/a><\/p><\/blockquote>\n

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The best seat in the house #aurora<\/a> #northernlights<\/a> #balbriggan<\/a> #dublin<\/a> #ireland<\/a> pic.twitter.com\/lZELlhIJHf<\/a><\/p>\n

\u2014 Sryan Bruen Photography (@sryanbruenphoto) April 19, 2024<\/a><\/p><\/blockquote>\n

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