July 24 update: Bam! Beautiful filament eruption
Today’s top sun news: A beautifully structured filament erupted at 18:43 UTC yesterday (July 23, 2022) from the southwest limb (edge) of the sun. It produced a bright coronal mass ejection (CME), observed in the SOHO/LASCO coronagraphs. We await further analysis to know if the CME is Earth-directed.
Last 24 hours: Sun activity remains low, with 16 C class flares. The highest, a C3.6, occurred at 22:41 UTC on July 23. The sun has six labeled active regions.
Next 24 hours: The flare forecast is 55% chance for C flares, 5% for M flares, and 1% for X flares.
Next expected CME: There might be an Earth-directed CME from the July 23 filament eruption. We’ll know more when the analysis is complete.
Current geomagnetic activity: Quiet.
July 23 update: CME is here
As predicted, beautiful auroral displays have been seen as far south as Ohio and Minnesota since late last night (July 22, 2022) and into this morning. They are the result of a CME impact, which sparked a G1 (minor) geomagnetic storm, whose threshold was reached at 3:59 UTC on July 23. As of this writing (11:30 UTC on July 23, or 6:30 a.m. CDT), a G2 (moderate) geomagnetic storm is possible in the hours ahead.
Down the road from you in nobles county! pic.twitter.com/JwOQbrO2YK
— Doug C (@diggitydoug_42) July 23, 2022
July 22 update: An awesome week for auroras
More auroras were reported overnight last night, and conditions for auroras remain good. NOAA’s 3-day forecast predicts a G1 (minor) geomagnetic storm for today (July 22, 2022). And we might get an even stronger G2 (moderate) geomagnetic storm overnight tonight (the prediction is for around 4 UTC on July 23). That might happen with the arrival of a CME produced on July 21. If so, auroras might be seen as far south as the northern U.S. states, provoked by a combination of high-speed solar wind from coronal holes and the CME impact. Aurora alert for tonight!
— alexander falconer (@alexfalconrt) July 22, 2022
— Isaac ?? (@ID_photo_graphy) July 22, 2022
July 21 update: More auroras
Aurora-watchers are happy! We’ve had auroras for the past several days, and conditions remain good for auroras over the next three days. Conditions are ripe for a G1 (minor) geomagnetic storm over the next three days according to NOAA’s 3-day forecast. It’s due to the combined influence of high-speed solar wind from coronal holes and a possible CME impact. Given the combination of influences, there is a slight chance for the G1 storm to reach G2 levels. This geomagnetic activity might provoke auroral displays starting tonight. The stronger the storm the farther south the auroras might be observed.
The recent #solarstorm was strong enough to bring #aurora views clear up to Queenscliff Victoria, Australia! Here is an amazing capture, complete with a rainbow lighthouse beam from Leanne Smith. https://t.co/6Cz6psMBbN pic.twitter.com/00Z2uWUbIx
— Dr. Tamitha Skov (@TamithaSkov) July 20, 2022
there was a flare in the class C AR3060 generating a Type II and Type IV Radio Emission, a darkening is observed, it means that there is a CME. ??? pic.twitter.com/0LlRbU7rgK
— Industrial Engineer Irene Quiroz (@nenecallas) July 21, 2022
July 20 update: Aurora alert continues
Observers in the northern U.S. and Canada are still reporting auroras (overnight on July 19 and early on July 20, 2022). They are the result of the July 15 filament eruption and CME. There’s a chance that a slow CME left the sun on July 15, too. If so, it might reach us by July 21 and 22. And there’s a high-speed solar wind coming our way from a coronal hole. All in all, conditions for auroras appear good!
The Northern Lights danced in last night’s moonlight pic.twitter.com/zBaMBGfqHk
— Jason O’Young (@jasonoyoung) July 19, 2022
— Sigma Sreedharan (She/Her) | Seattle (@sigmas) July 19, 2022
— Harlan Thomas (@theauroraguy) July 19, 2022
July 19 update: Aurora alert
Aurora alert! Observers in the northern U.S. and Canada are reporting auroras this morning. The geomagnetic storm threshold was reached July 19, 2022, at 9:01 UTC. The possibility for auroral displays at northerly latitudes might extend into this evening for North American times zones.
Boom!!!? Between the moon, and no true darkness it’s pretty bright here. I’ll take it! #aurora #TeamTanner @treetanner @TamithaSkov @chunder10 @hillsblockview @AuroraNotify @scottrockphoto @PeakToSailPhoto pic.twitter.com/1Yq4ADvHcm
— Dar Tanner (@dartanner) July 19, 2022
July 18 update: Calm before the aurora
Sun activity is low with only C flares. We await the arrival of the July 15 CME from a filament eruption. NASA estimates it will impact Earth on July 19 toward the beginning of the day (in UTC). It could produce auroras well into the northern U.S. (mid-latitudes). There are some large coronal holes in the east of the sun’s disk that could provide some fast solar wind at Earth later in the week.
Direct Hit! A snake-like filament launched as a big #solarstorm while in the Earth-strike zone. NASA predicts impact early July 19. Strong #aurora shows possible with this one, deep into mid-latitudes. Amateur #radio & #GPS users expect signal disruptions on Earth’s nightside. pic.twitter.com/7FHgS63xiU
— Dr. Tamitha Skov (@TamithaSkov) July 16, 2022
To our readers and community
We invite you all to send us your beautiful recent photos of sunspots and auroras. We love receiving your photos! To those of you who’ve already posted a photo to our community, thank you.
Recent sun pics, from EarthSky’s community
Bottom line: The sun had an eventful week which lead to a beautiful display of auroras. This was all due to Earth-targeted coronal mass ejections (CME) that lead to minor geomagnetic storms. Between July 19 and July 23, observers in the northern U.S. and Canada were reporting auroras. And to end the week, the sun gave off a beautiful filament eruption at 18:43 UTC on July 23!