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Geomagnetic Storm Watch Issued for Earth for Sunday
weatherboy.com ^ | SEPTEMBER 24, 2021

Posted on 09/25/2021 5:35:58 PM PDT by BenLurkin

The Space Weather Prediction Center (SWPC) , a unit of the U.S. Department of Commerce under NOAA,which sits alongside its terrestrial National Weather Service, has issued a Geomagnetic Storm Watch for all of Earth for Sunday, September 26 for the possibility of G1 or G2 storm conditions.

On Thursday, a sunspot, known as AR2871, experienced two explosive eruptions, each producing a significant M-class solar flare. Solar flares are classified according to their strength, on a B-C-M-X scale. B flares are the smallest while X are the largest. Similar to the Richter scale used to help quantify earthquakes, each letter represents a ten-fold increase in energy output. Within each letter class, there is also a finer scale that usually extends from 1-9. Within the powerful X class of flares, the number could exceed 9 to reflect a massive flare event.

...

AR2871 initially produced a M1.8 flare and a subsequent coronal mass ejection (CME). According to the SWPC, initial analysis and model run indicate an overtaking of the slightly slower CME that was also produced by region 2871 earlier on the 23rd with an arrival anticipated for the first half of September 27.

A coronal hole high speed stream, known as CH HSS for short, is due to hit the Earth by midday on the 26th. The National Weather Service’s Space Weather Prediction Center (SWPC) says, “Isolated G1 (Minor) geomagnetic storming is likely 26 September as a positive polarity CH HSS extension from the Northern crown becomes geoeffective.”

Right now, the SWPC says there is a 30% chance of only active geomagnetic activity on the 26th, a 40% chance of a “minor storm”, a 25% chance of a “moderate storm”, and a 1% chance of a “strong-extreme storm.”

(Excerpt) Read more at weatherboy.com ...


TOPICS: Astronomy
KEYWORDS: ar2871; aurora; cme; coronalmassejection; geomagneticstorm; sida; solarflare
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To: mewzilla

Thanks! I was about to post that link. Looks like Scandinavia and northern Canada will get a good show!


61 posted on 09/26/2021 10:11:07 AM PDT by 21twelve (Ever Vigilant. Never Fearful.)
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To: dfwgator

Roger


62 posted on 09/26/2021 10:11:08 AM PDT by Vaduz (women and children to be impacIQ of chimpsted the most.)
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To: BenLurkin

https://freerepublic.com/tag/coronalmassejection/index


63 posted on 09/26/2021 2:40:29 PM PDT by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: SunkenCiv

It’s a fun topic.

Sunday is here an e rything is jus ine. No pro le s

o ng W p


64 posted on 09/26/2021 2:43:31 PM PDT by BenLurkin (The above is not a statement of fact. It is either opinion, or satire. Or both.)
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To: BenLurkin

LOL


65 posted on 09/26/2021 2:44:50 PM PDT by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: Nateman
Is the Strom big enough to wipe out stories of the Arizona Audit?

Not at 1050 cc's. But yes, its bags do make its ass look bigger.


66 posted on 09/26/2021 2:45:53 PM PDT by Sirius Lee (They intend to murder us. Prep if you want to live and live like you are prepping for eternal life)
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