Tag Archives: NOAA AR 2192

The Sun online and activity solar.30.10.2014

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Seven M-class flares and six C-class flares were counted since the last bulletin. An M3.5 flare was the largest flare, peaking at 1:35 UT, originating from Catania sunspot group 88 (NOAA AR 2192). Catania group 88 is currently located at the west limb and although it is difficult to determine it’s characteristics, the region seems to have shrinked. All other regions on the front side of the solar disk were relatively stable. Catania group 88 is still capable to produce large flares, mainly at the M-level, with a minor chance for another X-flare. We retain the warning condition for a proton event. No Earth-directed CMEs were observed in coronagraphic imagery.The solar wind speed observed by ACE is low at around 350 km/s. The interplanetary magnetic field has a magnitude of about 5 nT. A sector boundary crossing is observed at about 08:00 UT on October 30 as the phi angle changed from a mostly positive to negative orientation. Mostly quiet geomagnetic conditions are expected, with a chance for an isolated time slot of active conditions (K=4).

 

 

The Sun online and activity solar.29.10.2014

солнце 29 октября

Solar activity has slightly reduced in the past 24 hours, with three M-class and two C-class flares. Activity mainly originated from  Catania sunspot group 88 (NOAA AR 2192). A narrow CME was observed in SOHO/LASCO-C2 imagery (first measurement at October 28 20:24 UT), with a projected speed of 388 km/s (CACTus estimate). The CME is travelling to the northeast of the Sun-Earth line. The CME is believed to be associated with activity at the backside of the Sun and as such no effect on Earth is expected. Catania group 88 still has potential to produce strong flares up to the X-level. Due to it’s location close to the West limb, a strong eruption may result in a rise of the proton flux. Earth is currently inside a slow solar wind, with solar wind speed decreasing from 450 km/s to currently around 350 km/s. The interplanetary magnetic field has a magnitude of about 5 nT with fluctuating Bz values. Quiet geomagnetic conditions are observed and are expected to continue.

The Sun online and activity solar.28.10.2014

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Another X-class flare was produced by Catania sunspot group 88 (NOAA AR 2192); an X2.1 flare peaked at 14:47 UT on October 27. Also three M-class and several C-class flares were added to the activity list of this region. No associated CME was observed, nor was there an increase in proton flux. The region Lf-nh7 retains its area and magnetic complexity and has still high potential to produce additional flares up to the X-level. It is currently located close to the West limb and a strong eruption may result in a rise of the proton flux.  The extended filament in the northern hemisphere has the potential to lift off and produce an Earth-directed CME.  Earth is inside a slow solar wind, with a speed near 400 km/s. The interplanetary magnetic field magnitude reaches values up to 8 nT, with an often southward oriented Bz. Mostly quiet geomagnetic conditions are observed, with a few isolated time slots of active (K=4, measured at Dourbes) conditions. Quiet to active conditions are  expected to continue.

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Processing: Photoshop, Avistack 300 frames
Date: 28/10/14
Exposure 1/500 sec.

 

The Sun online and activity solar.26.10.2014

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In the past 24 hours, Catania sunspot group 88 (NOAA AR 2192) produced two
X-class flares: X1.0 peaking at 17:08 UT yesterday and X2.0 peaking at
10:56 UT today. Neither of the flares seems to be associated with an
Earth-directed CME. The area of the Catania sunspot group 88 increases
again, and it maintains the beta-gamma-delta configuration of its
photospheric magnetic field, so we expect the flaring activity up to
X-level from this sunspot group. As the Catania sunspot group 88 is
currently situated in the western solar hemisphere, a major eruption in
this active region may lead to a proton event. A long filament in the
northern hemisphere is continuing its passage across the solar central
meridian. Its possible eruption may lead to an Earth-directed CME. The
Earth is currently inside a slow (around 370 km/s) solar wind flow with
slightly elevated (around 7 nT) interplanetary magnetic field magnitude.
The geomagnetic conditions are quiet and are expected to remain  so, with
isolated intervals of active (K = 4) geomagnetic conditions possible but
not very likely.

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 300 frames
Date: 26/10/14
Exposure 1/500 sec.

Observatory Sponli

The Sun online and activity solar.25.10.2014

 

 

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The strongest flare observed on the Sun during the past 24 hours was the X3.1 flare peaking at 21:41 UT yesterday in the Catania sunspot group 88 (NOAA AR 2192). SOHO/LASCO data demonstrate that the flare was accompanied only with a very weak and narrow CME. No geomagnetic consequences are expected. Despite the decrease in the area of the Catania sunspot group 88, it maintains the beta-gamma-delta configuration of its photospheric magnetic field, so we expect the flaring activity up to X-level from this sunspot group. As the Catania sunspot group 88 is currently situated close to the solar central meridian, a major eruption in this active region may lead to a geoeffective CME and a proton event. A long filament in the northern hemisphere is now crossing the solar central meridian. Its possible eruption may lead to an Earth-directed CME.The Earth is currently inside a slow (around 390 km/s) solar wind flow with average (around 5 nT) interplanetary magnetic field magnitude. The geomagnetic conditions are quiet and are expected to remain so.

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 300 frames
Date: 25/10/14
Exposure 1/500 sec.

Observatory Sponli

The Sun online and activity solar.25.10.2014

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Catania sunspot group 88 (NOAA AR 2192) continues to grow and maintains the beta-gamma-delta configuration of its photospheric magnetic field. The strongest flare it produced during the past 24 hours was the M4.0 flare peaking at 07:48 UT today. This flare was accompanied only with a narrow CME that is not expected to arrive at the Earth. We expect the flaring activity up to X-level from this sunspot group. As the Catania sunspot group 88 is currently situated close to the solar central meridian, a major eruption in this active region may lead to a geoeffective CME and a proton event. A long filament in the northern hemisphere is approaching the solar central meridian. Its possible eruption may lead to an Earth-directed CME. The Earth is currently inside a slow (around 430 km/s) solar wind flow with average (around 6 nT) interplanetary magnetic field (IMF) magnitude. The geomagnetic conditions are quiet and are expected to remain so, with isolated intervals of active conditions (K = 4) possible but unlikely.

The Sun online and activity solar

солнце 22 октября

INFO FROM SIDC – RWC BELGIUM 2014 Oct 22 12:44:19

 

INFO FROM SIDC – RWC BELGIUM 2014 Oct 22 12:44:19

 

Three M-class flares were detected in the past 24 hours, all of them

produced by the Catania sunspot group 88 (NOAA AR 2192). The strongest

flare was the M8.7 flare peaking at 01:59 UT. Based on the still incomplete

SOHO/LASCO data and the absence of conspicuous eruptive signatures in the

SDO/AIA data, we conclude that there was no CME associated with this flare.

We expect flaring activity mostly on the M-level in this group, with a good

chance for an X-class flare. As the Catania sunspot group 88 approaches the

solar central meridian, a major eruption in this active region may lead to

a geoeffective CME and a proton event.The Earth is currently inside a slow

(around 460 km/s) solar wind flow with average (around 5 nT) interplanetary

magnetic field magnitude. The geomagnetic conditions are quiet and are

expected to remain so.

Three M-class flares were detected in the past 24 hours, all of them

produced by the Catania sunspot group 88 (NOAA AR 2192). The

The Sun online and solar activity. 21.10.2014

солнце 21

INFO FROM SIDC - RWC BELGIUM 2014 Oct 21 13:39:38

Catania sunspot group 88 (NOAA AR 2192) continues to grow and maintains the
beta-gamma-delta configuration of its photospheric magnetic field. It
produced four M-class flares in the past 24 hours, the strongest of them
being the M4.5 flare peaking at 16:37 UT. We expect flaring activity mostly
on the M-level in this group, with a good chance for an X-class flare. As
the Catania sunspot group 88 approaches the solar central meridian, a major
eruption in this active region may lead to a geoeffective CME and a proton
event. An active region at the north-east limb (no sunspots are still
visible) produced several flares including the C6.3 flare peaking at 10:58
UT today. It may produce an isolated M-class flare as well. A weak partial
halo CME (angular width around 200 degrees) was first seen in the
SOHO/LASCO C2 field of view at 19:12 UT on October 20. The CME was very
weak and disappeared before reaching the LASCO C3 field of view, so we do
not expect it to arrive at the Earth. The source region of the CME is the
eruption in the Catania sunspot group 88 (NOAA AR 2192) and in the region
to the south-west of it, starting around 18:40 UT, accompanied with coronal
dimmings and the M1.4 flare peaking at 19:02 UT. The solar wind speed is
currently high (around 640 km/s) and the interplanetary magnetic filed
(IMF) magnitude is around 7 nT. Due to elevated values of the IMF magnitude
and predominantly southward IMF direction, the K index reached 5 during one
interval yesterday evening (according to Dourbes, IZMIRAN, and NOAA).
Currently the north-south IMF component Bz is fluctuating around zero, so
we expect quiet to unsettled geomagnetic conditions (K < 4) in the coming
hours, possibly with isolated intervals of active conditions (K = 4).

The Sun online and solar activity.20.10.2014

солнце 20 октября
INFO FROM SIDC - RWC BELGIUM 2014 Oct 20 13:00:17

Six sunspot groups are reported by Catania today. The main source of the
solar flaring activity is the Catania sunspot group 88 (NOAA AR 2192) that
is growing in size and complexity. Now it has beta-gamma-delta
configuration of its photospheric magnetic field. After yesterday's X1.1
flare, the strongest flare was the M3.9 flare peaking at 09:11 UT today.
This flare was not accompanied by a CME. We expect more flaring activity up
to X-level from this sunspot group. The Earth is currently inside a solar
wind flow with intermediate speeds (around 500-550 km/s). This flow might
be associated with a narrow low-latitude coronal hole that passed the solar
central meridian on October 17-18. The interplanetary magnetic field (IMF)
magnitude was elevated (up to 9 nT), and the IMF was directed predominantly
southward during the last several hours. Intervals of active geomagnetic
conditions (K = 4) were reported by Dourbes and NOAA. We expect quiet to
active geomagnetic conditions in the coming hours.