Recent content by Stavros Kiri

Space Weather news for Wed Oct. 15, 2025 Multiple CMEs Could Spark Auroras This Week MULTIPLE CMEs ARE APPROACHING EARTH: As many as 3 CMEs are approaching Earth. According to a NOAA model, they could spark G2-class geomagnetic storms when they arrive on Oct. 16-17. High-latitude sky watchers...

For Sept. 15, 2025 STRONG EQUINOX STORM: Last night, a strong geomagnetic storm pushed auroras deep into the USA, with sightings as far south as Colorado and Arizona. This was an "equinox storm" enhanced by the Russell-McPherron effect. It won't be the last one. The season for such storms runs...

For Th Sept 11, 2025 GIANT BUTTERFLY-SHAPED HOLE IN THE SUN'S ATMOSPHERE: A 500,000-km wide coronal hole has opened in the sun’s atmosphere, sending a stream of solar wind toward Earth. It could spark G1–G2 geomagnetic storms and auroras around Sept. 14th, enhanced by the Russell-McPherron...

[Fri Sept. 5, 2025] Also, another event, almost at the same time ... : AURORAS POSSIBLE DURING THE LUNAR ECLIPSE: Yesterday (Th Sept. 4), a 'sigmoid' on the sun exploded, a CME directly toward Earth. Its arrival on Sept. 7th could spark auroras during this weekend's total lunar eclipse...

Tue Sept. 2, 2025 1. " GEOMAGNETIC STORM WATCH: A geomagnetic storm watch is in effect on Sept. 2nd as Earth passes through the wake of a CME that struck yesterday. Category G1 (Minor) storms are likely with a chance of escalating to category G2 (Moderate) or G3 (Strong). High-latitude sky...

After a few days of relative quiet, the Solar Activity intensifies once again, as large groups of big to huge sunspots make their way to the front side. A) Aug. 29, 2025 " MONSTER SUNSPOTS: A phalanx of large sunspots is facing Earth. They're so large, photographers are catching them in the...

Wed. Aug. 20, 2025 Solar Wind still elevated right now, with speed ~ e.g. 650.7 Km/sec ... " GEOMAGNETIC STORM WATCH: The action started yesterday. Minor G1-class geomagnetic storms broke out on Aug. 19th when Earth entered a fast-moving stream of solar wind. The action could intensify today...

(Still Aug. 19 [to 20, depending on local time zones] ...) The Solar Wind speed in the meantime went close to 700Km/sec ... (cf. previous post ... / was ~ in contineous rising & many flares, almost every 5 to 10 min for some time ...). Also: " GEOMAGNETIC STORM UNDERWAY: A minor G1-class...

[+ See/cf. previous 2 posts – very important!] Latest update (to the latest minute): New further significant increases in the Solar Wind (today Tue, Aug. 19, 2025), and new local & global maxima, [as well as new C2 flare(s) too (more than one, almost consecutive)] ... [take a look] : 1. "Solar...

(For Aug. 18, 2025) LAST CHANCE TO SEE TITAN'S SHADOW: On Aug. 19th, Saturn’s largest moon will cast its jet-black shadow onto the planet’s cloudtops--one of the final transits of the current season. The event is visible through backyard telescopes. Don’t miss it: The show won’t return...

It seems Solar Activity may be increasing again (these last days etc.) ... Today, Tue Aug. 19, 2025, [and for/regarding yesterday too, (i.e. the 2nd part of this post, below ...) ...] increased, important & somewhat relatively unusual Solar Activity ... {(+ chances for auroras is/may be...

A) Aug. 16, 2025 " CO-ROTATING INTERACTION REGION: A co-rotating interaction region (CIR) is expected to hit Earth on Aug. 18th, squeezing our magnetic field between fast and slow streams of solar wind. Watch for a sudden jump in solar wind speed, density, and magnetic field (especially Bz)...

The Solar Wind is/was still elevated (over 500Km/sec) on April 24. At the same time, 2 very interesting subjects posted: " FARMERS, DID YOUR TRACTORS JUST GO CRAZY? Many modern farmers use GPS-guided tractors to plant and tend their crops. Last weekend, some of them veered off course. We've...

The solar wind from that coronal hole sparked these "tie dye" auroras over Fairbanks, Alaska: "The twilight skies of spring bring about some of the most beautiful pink and purple colors," says photographer Sacha Layos. "We are nearly out of skies dark enough for aurora. If this was the end of...

Finally, that above announced/predicted solar storm briefly became category G4 (severe) [on April 16th] ... Now, April 18, 2025 : " GEOMAGNETIC GROUND CURRENTS IN NORTH AMERICA: Space weather doesn't only happen in the sky. It's in the ground, too. On April 16th, a severe geomagnetic storm...