{"id":800828,"date":"2026-02-22T05:18:29","date_gmt":"2026-02-22T10:18:29","guid":{"rendered":"https:\/\/spaceweekly.com\/?p=800828"},"modified":"2026-02-22T05:18:29","modified_gmt":"2026-02-22T10:18:29","slug":"g1-minor-geomagnetic-storm-underway-noaa-forecasts-possible-g2-conditions","status":"publish","type":"post","link":"https:\/\/spaceweekly.com\/?p=800828","title":{"rendered":"G1 – Minor geomagnetic storm underway, NOAA forecasts possible G2 conditions"},"content":{"rendered":"


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Data from NOAA show the disturbance began when Kp reached 5 during the 03:00\u201306:00 UTC period, followed by another interval of Kp 5 between 06:00 and 09:00 UTC. The event is associated with a coronal hole high-speed stream (CH HSS) interacting with Earth\u2019s magnetic field following a solar-sector boundary crossing on February 21.<\/p>\n

Potential impacts under G1 storm conditions include weak power-grid fluctuations at high latitudes, minor irregularities in satellite orientation, slight increases in drag on low-Earth-orbit satellites, and occasional short-lived HF-radio propagation fades at high latitudes.<\/p>\n

Auroral visibility during G1 activity is generally confined to polar and subpolar regions, including Canada, Scandinavia, Scotland, and the northernmost United States, such as Michigan and Maine.<\/p>\n

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Coronal hole and active region map for February 21, 2026. Credit: NASA\/SDO, Solen<\/figcaption><\/figure>\n<\/div>\n
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\"wsa\"wsa
Image credit: SWPC<\/figcaption><\/figure>\n<\/div>\n

If G2 \u2013 Moderate storm levels develop later in the day, additional impacts may include more noticeable power-grid voltage alarms at high latitudes, intermittent degradation of high-frequency radio propagation, and increased drag on low-Earth-orbit satellites.<\/p>\n

Under G2 conditions, auroras could extend farther south, potentially visible across northern-tier U.S. states, including New York, Wisconsin, and Washington.<\/p>\n

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\"aurora\"aurora
Image credit: SWPC<\/figcaption><\/figure>\n<\/div>\n
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\"estimated-planetary-k-index\"estimated-planetary-k-index
Image credit: SWPC<\/figcaption><\/figure>\n<\/div>\n

Solar wind speeds increased from 460 km\/s to about 560 km\/s in 24 hours ending 00:30 UTC on February 22, while total magnetic field strength reached 15 nT with the Bz component fluctuating between +12 and \u221210 nT.<\/p>\n

NOAA expects enhanced solar-wind conditions to continue through February 24 due to the combined effects of a co-rotating interaction region (CIR) and the ongoing high-speed stream. Intermittent G1 storm periods are likely, with brief G2 conditions possible if solar-wind pressure intensifies.<\/p>\n

The greater-than-2 MeV electron flux reached moderate to high levels, while the proton flux stayed at background values.<\/p>\n

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\"rtsw\"rtsw
Image credit: SWPC<\/figcaption><\/figure>\n<\/div>\n
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\"sunspots\"sunspots
Sunspots on February 22, 2026. Credit: NASA SDO\/HMI<\/figcaption><\/figure>\n<\/div>\n

Solar activity remains very low, with only one B and one C-class flare detected today, as of 09:20 UTC. <\/p>\n

There are currently no active regions on the Earth side of the Sun after Region 4374 rotated off the visible solar disk.<\/p>\n

The last M-class solar flare was detected at 04:35 UTC on February 16 (M2.4).<\/p>\n

References:<\/p>\n

1<\/sup> Forecast Discussion \u2013 NOAA\/SWPC \u2013 Issued at 00:30 UTC on February 22, 2026<\/p>\n


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Data from NOAA show the disturbance began when Kp reached 5 during the 03:00\u201306:00 UTC period, followed by another interval of Kp 5 between 06:00 and 09:00 UTC. The event… <\/p>\n","protected":false},"author":1,"featured_media":800191,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-800828","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\/800828","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=800828"}],"version-history":[{"count":0,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/800828\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/media\/800191"}],"wp:attachment":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=800828"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=800828"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=800828"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}