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SOLAR WATCH * Huge X8.2 Flare Sept. 10, 2017! (Updated Daily)
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[quote:Helios Maximus:MV8xMzgyOTUyXzg2MTQxNDQ5XzkyQUZDMzE0] [b]IT WAS A CME-[/b] My initial hunch was correct. Apparently a 'stealth CME' caused last nights G2 storm. I posted the SWPC forecast above and there was no mention of an incoming CME. SURPRISE! :sun::raspberry::sun: SWPC has come to the same conclusion now. They're still expecting a coronal hole stream to arrive. [b]SWPC Forecast Discussion-[/b] Solar Wind [b].24 hr Summary... Solar wind parameters became enhanced from approximately 28/2300-01/1530 UTC due to possible CME effects.[/b] Total field reached a maximum of 14 nT at 01/0328 UTC while the Bz component reached a maximum southward deflection of -13 nT. Solar wind speed increased briefly to a maximum of 538 km/s at 01/0902 UTC. Phi angle was variable throughout the period. .Forecast... Solar wind parameters are expected to become enhanced once again on 02 Mar as a negative polarity CH HSS moves into geoeffective position. HSS conditions are expected to persist through 03 Mar and slowly taper off on 04 Mar. Solar wind speeds are expected to be mostly in the 500-550 km/s range based on recurrent values. Geospace .24 hr Summary... The geomagnetic field increased to G2 (Moderate) geomagnetic storm levels, observed during the 01/0300-0600 synoptic period, in response to sustained periods of southward Bz and a brief solar wind speed increase to 538 km/s. Quiet to unsettled levels were observed during the second half of the UTC day. [b].Forecast... The geomagnetic field is expected to increase to unsettled to G1 (Minor) geomagnetic storm levels on 02 Mar in response to the arrival of a negative polarity CH HSS. Unsettled to active levels are expected on 03 Mar as HSS conditions persist followed by quiet to unsettled levels on 04 Mar.[/b] https://www.swpc.noaa.gov/products/forecast-discussion [/quote]
Original Message
Please See Current Events Discussion On Last Page :)
We have just had another huge X flare measuring at a X8.2 originating from sunspot 2673
On September 11, 2017
[
link to legacy-www.swpc.noaa.gov
]
ALL flares recorded ARE Earth facing regardless of where the sunspot is located
-----------
CME FROM X9 HAS ARRIVED!
Issue Time: 2017 Sep 07 2242 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2017 Sep 07 2255 UTC
Valid To: 2017 Sep 07 2330 UTC
IP Shock Passage Observed: 2017 Sep 07 2229 UTC
On September 6th we have had 2 X flares! A X2.2 at 09:10 utc & a secend larger flare just a few hours later of X9.3 at 12:02 utc. There is a large widespread Earth directed CME associated with this latest X flare as we can see here
[
link to stereo.gsfc.nasa.gov (secure)
]
[
link to stereo.gsfc.nasa.gov (secure)
]
An update as to the arrival time of this CME will be added once all data has been reviewed.
The X9.3 flare is the 14th largest X flare ever recorded!
On September 4th we had 7 M flares from fast growing sunspot 2673, with at least 1 large dense Earth directed CME. This CME will arrive late in the day on Wednesday September 6th.
There is now a 25% chance for X flares over the next 24hrs & 71% chance for M flares
We have a Long Duration M2.4 Solar Flare starting
01:05 UTC July 14th 2017
There was a full halo CME observed with this solar flare. The associated CME is Earth Directed. See discussion on the last page for all updates!
1,000,000 Views hit on July 3, 2012
A big thanks to all the wonderful contributors of
the GLP Solar Watch thread!
Please See Current Events Discussion On Last Page :)
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