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#spaceweather

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💧🌏 Greg Cocks<p>The March 1940 Superstorm - Geoelectromagnetic Hazards And Impacts On American Communication And Power Systems<br>--<br><a href="https://doi.org/10.1029/2022SW003379" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">doi.org/10.1029/2022SW003379</span><span class="invisible"></span></a> &lt;-- shared paper<br>--<br><a href="https://techhub.social/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a> <a href="https://techhub.social/tags/geomagnetic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>geomagnetic</span></a> <a href="https://techhub.social/tags/history" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>history</span></a> <a href="https://techhub.social/tags/historic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>historic</span></a> #1940 <a href="https://techhub.social/tags/USA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>USA</span></a> <a href="https://techhub.social/tags/measurement" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>measurement</span></a> <a href="https://techhub.social/tags/spatialanalysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spatialanalysis</span></a> <a href="https://techhub.social/tags/geomagnetism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>geomagnetism</span></a> <a href="https://techhub.social/tags/risk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>risk</span></a> <a href="https://techhub.social/tags/hazard" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hazard</span></a> <a href="https://techhub.social/tags/effects" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>effects</span></a> <a href="https://techhub.social/tags/ICME" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ICME</span></a> <a href="https://techhub.social/tags/CME" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CME</span></a> <a href="https://techhub.social/tags/coronalmassejection" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>coronalmassejection</span></a> <a href="https://techhub.social/tags/interference" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>interference</span></a> <a href="https://techhub.social/tags/electricity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electricity</span></a> <a href="https://techhub.social/tags/electrical" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electrical</span></a> <a href="https://techhub.social/tags/utilities" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>utilities</span></a> <a href="https://techhub.social/tags/infrastructure" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>infrastructure</span></a> <a href="https://techhub.social/tags/impacts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>impacts</span></a> <a href="https://techhub.social/tags/communications" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>communications</span></a> <a href="https://techhub.social/tags/telecommunications" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>telecommunications</span></a> <a href="https://techhub.social/tags/geoelectromagnetic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>geoelectromagnetic</span></a> <a href="https://techhub.social/tags/solarwind" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>solarwind</span></a> <a href="https://techhub.social/tags/magneticstorm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>magneticstorm</span></a> <a href="https://techhub.social/tags/humanimpacts" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>humanimpacts</span></a> <a href="https://techhub.social/tags/geoelectric" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>geoelectric</span></a> <a href="https://techhub.social/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>geology</span></a> <a href="https://techhub.social/tags/soil" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>soil</span></a> <a href="https://techhub.social/tags/operations" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>operations</span></a> <a href="https://techhub.social/tags/transmission" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>transmission</span></a> <a href="https://techhub.social/tags/power" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>power</span></a> <a href="https://techhub.social/tags/energy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>energy</span></a> <a href="https://techhub.social/tags/energysupply" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>energysupply</span></a> <a href="https://techhub.social/tags/naturalhazard" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>naturalhazard</span></a>@USGS | @CIRES</p>
Kevin Freitas<p>Today’s view of our star as seen from West Seattle. Sunspot group 4079 is showing us more detail as it turns towards us.</p><p><a href="https://mastodon.social/tags/OurStar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OurStar</span></a> <a href="https://mastodon.social/tags/OurSolarNeighborhood" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OurSolarNeighborhood</span></a> <a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a> <a href="https://mastodon.social/tags/AstroPhotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AstroPhotography</span></a> <a href="https://mastodon.social/tags/Seattle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Seattle</span></a> <a href="https://mastodon.social/tags/WestSeattle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>WestSeattle</span></a> <a href="https://mastodon.social/tags/SpaceWeather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceWeather</span></a> <a href="https://mastodon.social/tags/SpaceWX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceWX</span></a></p>
Kevin Freitas<p>Our star today as seen from West Seattle. Get a load of monstrous sunspot group 4079 — wow!</p><p><a href="https://mastodon.social/tags/OurStar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OurStar</span></a> <a href="https://mastodon.social/tags/OurSolarNeighborhood" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OurSolarNeighborhood</span></a> <a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a> <a href="https://mastodon.social/tags/AstroPhotography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AstroPhotography</span></a> <a href="https://mastodon.social/tags/Seattle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Seattle</span></a> <a href="https://mastodon.social/tags/WestSeattle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>WestSeattle</span></a> <a href="https://mastodon.social/tags/SpaceWeather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceWeather</span></a> <a href="https://mastodon.social/tags/SpaceWX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceWX</span></a></p>
G7IZU RRD<p>Space Weather</p><p>Ooh, hello? New Active Region AR4079 is starting to look more interesting. </p><p>The sunspot group is currently classed as a Beta with a 35% chance of producing an M-flare and 5% chance of an X-flare in the next 24 hours. It did already produce an M1.7 flare at 05h13 UT this morning. </p><p>There's currently an interesting loop of material visible on SDO (AIA 94 filter - first image). </p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a></p>
G7IZU RRD<p>Space Weather </p><p>Still nothing happening...</p><p>The solar XRay flux has not exceeded C3.9 in the last six days!</p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a></p>
G7IZU RRD<p>Space Weather</p><p>A first direct look at the new - and rather big! - sunspots coming around the east limb. </p><p>At this stage we have no idea the active the region will be.</p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a></p>
G7IZU RRD<p>Space Weather </p><p>Activity is still officially "boring", but are things about to change?</p><p>The farside monitor shows that the mysterious blob (an area of magnetic activity) will soon be appearing over the east limb. Huge magnetic loops above the limb are suggesting something interesting is coming!</p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a></p>
G7IZU RRD<p>Space Weather</p><p>A red Auroral glow was also visible on a cameras in New Zealand (top of South Island) about 90 minutes ago.</p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a> <br><a href="https://universeodon.com/tags/aurora" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>aurora</span></a></p>
G7IZU RRD<p>Space Weather</p><p>Aurora is visible on a camera in Canada.</p><p>A minor interplanetary shock was detected in the past two hours.</p><p><a href="https://www.youtube.com/watch?v=8PMTsRSHxGg" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=8PMTsRSHxG</span><span class="invisible">g</span></a></p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a> <br><a href="https://universeodon.com/tags/aurora" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>aurora</span></a></p>
G7IZU RRD<p>Space Weather</p><p>Y'all can see it, right?</p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a></p>
G7IZU RRD<p>Space Weather</p><p>Want to learn a bit about space weather? </p><p>Get a basic insight in under 2,300 words: <a href="https://www.tvcomm.co.uk/g7izu/brief-space-weather-course/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">tvcomm.co.uk/g7izu/brief-space</span><span class="invisible">-weather-course/</span></a></p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a></p>
G7IZU RRD<p>Space Weather</p><p>A G1 geomagnetic storm is in progress, courtesy of a high-speed solar wind of 700km/s+ caused by a large coronal hole. </p><p>Aurora is being reported by amateur radio operators at high-latitudes, although the Bz (magnetic) component of the solar wind is positive (we need it negative for a good solar storm!)</p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a> <br><a href="https://universeodon.com/tags/aurora" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>aurora</span></a></p>
Scientific Frontline<p><a href="https://mastodon.social/tags/SpaceWeather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceWeather</span></a> <a href="https://mastodon.social/tags/Solar" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Solar</span></a> <a href="https://mastodon.social/tags/sflorg" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sflorg</span></a></p><p>WARNING: Geomagnetic K-Index of 6 expected<br>Valid From: 2025 Apr 21 1353 UTC<br>Valid To: 2025 Apr 21 1800 UTC<br>Warning Condition: Onset<br>NOAA Scale: G2 - Moderate</p><p>Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.<br>Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.</p><p>Radio - HF (high frequency) radio propagation can fade at higher latitudes.</p><p><a href="https://www.sflorg.com/p/space-weather.html" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">sflorg.com/p/space-weather.html</span><span class="invisible"></span></a></p>
G7IZU RRD<p>Space Weather</p><p>Do you understand space weather? There are many myths and a lot of hyperbole out there which confuses peoples' conceptions and expectations.</p><p>I've just published a brief space weather course giving the facts in a concise and informative way. It should help you to understand the terms used and the processes involved in the creation of space weather.</p><p><a href="https://www.tvcomm.co.uk/g7izu/brief-space-weather-course/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">tvcomm.co.uk/g7izu/brief-space</span><span class="invisible">-weather-course/</span></a></p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a></p>
G7IZU RRD<p>Space Weather</p><p>A strong geomagnetic substorm just started. Aurora may be visible over the whole UK.</p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a> <br><a href="https://universeodon.com/tags/aurora" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>aurora</span></a></p>
G7IZU RRD<p>Space Weather</p><p>The M4.4 flare last night at 23h52 UT 18 Apr produced an impressive CME that went sharply southwards!</p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a></p>
G7IZU RRD<p>Space Weather</p><p>Solar flare alert: An M4.4 flare peaked at 23h52 UT 18 Apr. A type II radio emission was observed.</p><p>This was the first significant flare in five days, and it originated from a new active region emerging on the east limb.</p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a></p>
G7IZU RRD<p>Space Weather</p><p>From @TamithaSkov on the Twitsite:</p><p>"Multiple investigators asking me whether the ongoing <a href="https://universeodon.com/tags/PuertoRico" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PuertoRico</span></a> power <a href="https://universeodon.com/tags/blackout" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>blackout</span></a> was <a href="https://universeodon.com/tags/solarstorm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>solarstorm</span></a> related. At the present time I cannot exclude the possibility that geomagnetically induced currents (GICs) played a role. The power failure occurred within several hours of the storm peak at G4-levels yesterday. <br>That coupled with the fragility of the grid and the increased power consumption expected during the daytime hours (it was 12:40p local time), means the grid was stressed in multiple ways. Since transformer heating from GICs is a slow process, the several-hour delay from the peak storm intensity is consistent. This is a troubling development."</p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a> <br><a href="https://universeodon.com/tags/PuertoRico" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PuertoRico</span></a></p>
Astro Hawk (Ian Kluft) 🚀🛰️<p>As was likely to be the case, yesterday's surprise geomagnetic storm did not last long enough to be seen in my region's nighttime. But on the other side of the world some people got pictures while it happened. <a href="https://www.spaceweather.gov/communities/aurora-dashboard-experimental" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">spaceweather.gov/communities/a</span><span class="invisible">urora-dashboard-experimental</span></a> <a href="https://spacey.space/tags/SpaceWeather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceWeather</span></a> <a href="https://spacey.space/tags/aurora" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>aurora</span></a> <a href="https://spacey.space/tags/AuroraBorealis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AuroraBorealis</span></a> <a href="https://spacey.space/tags/AuroraAustralis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AuroraAustralis</span></a> <a href="https://spacey.space/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a></p>
Union City, CA Weather<p>Space Weather Message Code: ALTK08<br>Serial Number: 50<br>Issue Time: 2025 Apr 16 2054 UTC</p><p>ALERT: Geomagnetic K-index of 8, 9-<br> Threshold Reached: 2025 Apr 16 2055 UTC<br>Synoptic Period: 1800-2100 UTC<br> <br>Active Warning: Yes<br>NOAA Scale: G4 - Severe</p><p>NOAA Space Weather Scale descriptions can be found at<br>www.swpc.noaa.gov/noaa-scales-explanation</p><p>- Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.</p><p>- Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.</p><p>- Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.</p><p>- Navigation - Satellite navigation (GPS) degraded or inoperable for hours.</p><p>- Radio - HF (high frequency) radio propagation sporadic or blacked out.</p><p>- Aurora - Aurora may be seen as low as Alabama and northern California. <a href="https://m.ai6yr.org/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a> <br><a href="https://www.spaceweather.gov/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">spaceweather.gov/</span><span class="invisible"></span></a></p>
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