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#solarstorm

4 posts4 participants0 posts today
Public
G7IZU RRD

Space Weather

From @TamithaSkov on the Twitsite:

"Multiple investigators asking me whether the ongoing #PuertoRico power #blackout was #solarstorm 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.
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."

#spaceweather
#PuertoRico

Graph annotation by @TamithaSkov
Public
Westport Observatory

While another solar wind stream is heading for Earth today, a solar storm last year demonstrated that even smaller solar events are something to worry about. The Gannon storm in May was formed when dozens of solar flares sent at least five coronal mass ejections (CMEs) toward Earth. Those CMEs merged creating a major event. Researchers estimate the Gannon storm caused at least $500 million in losses for farmers alone. spacenews.com/solar-flares-in-

Surface of the sun ejecting a CME
#Spaceweather#solarstorm#CME
Public
Dr. John Barentine FRAS

"The sharp altitude decay of SL1089 revealed by TLE data coincides with the storm main phase onset. Therefore, we call for future research to establish the eventual causal relationship between storm occurrence and satellite orbital decay."

arxiv.org/abs/2411.01654v1

arXiv.orgThe 10 October 2024 geomagnetic storm may have caused the premature reentry of a Starlink satelliteIn this short communication, we qualitatively analyze possible effects of the 10 October 2024 geomagnetic storm on accelerating the reentry of a Starlink satellite from low-Earth orbit (LEO). The storm took place near the maximum of solar cycle (SC) 25, which has shown to be more intense than SC24. Based on preliminary geomagnetic indices, the 10 October 2024, along with the 10 May 2024, were the most intense events since the well-known Halloween storms of October/November 2003. By looking at a preliminary version of the Dst index and two-line element (TLE) altitude data of the Starlink-1089 (SL1089) satellite, we observe a possible connection between storm main phase onset and a sharp decay of SL1089. The satellite was scheduled to reenter on 22 October, but it reentered on 12 October, 10 days before schedule. The sharp altitude decay of SL1089 revealed by TLE data coincides with the storm main phase onset. Therefore, we call for future research to establish the eventual causal relationship between storm occurrence and satellite orbital decay. As predicted by previous works, SC25 is already producing extreme geomagnetic storms with unprecedented satellite orbital drag effects and consequences for current megaconstellations in LEO.
#Space#SpaceSustainability#Cycle25
Public
Dr. John Barentine FRAS

The orbits of 12 #Starlink satellites decayed rapidly after the large geomagnetic storm in May 2024. "Based on the positions and local times of changes in decay rates, it is likely that the satellites were affected by various processes during elevated space weather activity, such as enhanced EUV flux, Joule heating, particle precipitation, and the equatorial neutral anomaly."

arxiv.org/abs/2410.16254

arXiv.orgLoss of 12 Starlink Satellites Due to Pre-conditioning of Intense Space Weather Activity Surrounding the Extreme Geomagnetic Storm of 10 May 2024This study investigates the orbital decay and subsequent reentries of 12 Starlink satellites from 16 April to 15 May 2024. By examining Two-Line Element data, we observed a significant increase in orbital decay following the geomagnetic storm on 10 May 2024, consistent with expectations of increased thermospheric density. An unexpected increase in decay rates for 10 satellites was identified around 25 April 2024, while two lower-altitude satellites remained unaffected. Detailed analysis revealed that this enhanced decay rate prior to the storm was influenced by a spike in the O/N2 ratio and an increase in Extreme Ultra Violet (EUV) flux. Moreover, most of the satellites exhibited sharp decay during the early recovery phase of the geomagnetic storm. Based on the positions and local times of changes in decay rates, it is likely that the satellites were affected by various processes during elevated space weather activity, such as enhanced EUV flux, Joule heating, particle precipitation, and the equatorial neutral anomaly. This study highlights the complex role of preconditioning due to enhanced EUV flux and extreme space weather activity in the orbital dynamics of Low-Earth Orbit (LEO) satellites.
#Space#SpaceSustainability#Atmosphere
Public
Alan Mac Cárthaigh 🇮🇪

BOOOMMMM!! 🤩🤯💥. WOAH, What a “SPECTACULAR” Aurora Borealis / Northern Lights (Also visible to the naked eye too..) along Courtmacsherry areas & Barryroe Parish in West Cork, #Ireland after #sunset on 10th October 2024! 🤩🥰📸🌠🌌💥🌾🌊✨ #aurora #auroraborealis #northernlights #astronomy #photo #photograph #photography #photographer #mastophoto #mastodaoine #art #nature #weather #colour #light #sky
#solarstorm #CME #comet #Cork #sun #astro #Astrophotography #space #spaceweather #WildAtlanticWay #october

A “SPECTACULAR” Aurora Borealis / Northern Lights (Also visible to the naked eye too..) along Courtmacsherry areas & Barryroe Parish in West Cork, Ireland after sunset on 10th October 2024!!
Public
Flipboard Science Desk

In the U.S., solar storm brings spectacular Northern Lights to sky-watchers as far south as Texas.

NBC News reports: "According to the [U.S.] National Oceanic and Atmospheric Administration, the storm was ranked 4 out of 5 in severity, allowing for more widespread illuminations across night skies, particularly across Europe."

flip.it/nLu0Im

NBC News · Aurora Borealis photos: Solar storm brings northern lights as far south as TexasBy Max Butterworth
#SolarStorm#NorthernLights#Space
Public *
Artemis

Hey Folks! There's another cool #Aurora northern lights show tonight!!!

Not as big as the solar storm in the spring, but still a pretty good one. Make plans to go find somewhere dark and look at the northern horizon (in the northern hemisphere). Remember, to your eyes it might just look like city lights, but to your phone on night-mode (long exposure) it will look a lot cooler.

More forecast info:
gi.alaska.edu/monitors/aurora-

#SolarStorm#NorthernLights#Sun
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