Sol (Sun) and its phenomena

SOLAR CYCLE 25 ACTIVITY REPORT NOVEMBER 11

Solar activity has been at moderate levels AR3141 was the most active region in the last 24 hours with ten flares. The largest event of the period was a C4.6 at 01:35 on November 11 from this region.
https://twitter.com/x/status/1590890220563861504

There are currently 5 active regions on the solar disk: AR3137, AR3140, AR3141, AR3144 and new region AR3145
hmi200.gif
AR3145 located in the northeast (N27E04) is a group of 3 sunspots with an beta magnetic field and an area of 10MH. It does not pose a threat of strong solar flares.

https://twitter.com/x/status/1590794328678752257
Puma said:
AR3141 located on the northeast (N15E37) is now a gigantic region with an area of 600HM (The size of the Earth is equivalent to almost 170MH) and a beta-gamma magnetic field that harbors energy for M-class solar flares. Any flares will be geoeffective as the sunspot is turning toward Earth
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AR3141 located in the northeast (N15E01) is currently a region with 21 sunspots with beta-gamma-delta magnetic complexity, i.e., a sunspot group with a beta-gamma magnetic configuration (bipolar positive and negative in a irregular way) but containing one or more delta sunspots (opposite polarity). The area occupied by this region remains at 600HM.

A SUNSPOT WITHIN A SUNSPOT: AR3141 is sprouting a little version of itself on its shoulder. The circled region in this magnetogram is, essentially, an extra sunspot:
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zaphod1_strip.jpg
The extra magnetic poles are in close proximity to AR3141's primary core, an arrangement which makes the ensemble unstable. Analysts call this a 'delta-class' magnetic field; it poses a threat for strong X-class solar flares. SpaceWeather.com
Click to expand...

The total number of sunspots has decreased to 79 (29 of these are grouped into 6 active regions) NOAA forecast for the next 24h is 75% chance for C flares, 25% chance for M flares and 10% chance for X flares.

CHANCE OF X-FLARES: Sunspot AR3141 is growing more dangerous. During the past 24 hours it has developed an unstable 'delta-class' magnetic field that habors energy for X-flass solar flares. Any explosions today will be geoeffective because the sunspot is directly facing Earth. SpaceWeather.com
Click to expand...

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 338.4 km/sec at 01:54 UTC on November 10 The maximum planetary index Kp in the past 24h was Kp1

Aurora Oval
aurora-map (1).jpg

● Current Conditions at 05:00 UTC on November 11

▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=0
▪︎Solar wind speed record: 306.9 km/sec
▪︎density: 8.56 protons/cm3
▪︎Neutron Counts today: +4.1% Elevated
▪︎X-ray Solar Flare: C4 at 01:35 UTC
▪︎Sunspot number: 79 (SN 81 Nov 09)

SpaceWeather.com
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SOLAR CYCLE 25 25ACTIVITY REPORT NOVEMBER 12

Solar activity is at moderate levels. Multiple C-Flares (15 C-class) and three low level M-Flares during the past 24 hours from AR3141

As mentioned above, the AR3141 region developed an unstable magnetic field with energy for X-class flares. Fortunately it did not happen, however, it has generated three M-class flares so far

The first M flare was a M1.2 and occurred at 07:14 UTC on November 09. It generated a Minor R1 Radio blackout over India. The second also a M1.2. It occurred at 11:40 UTC and generated a Minor R1 Radio blackout over Africa.
https://twitter.com/x/status/1591137357314813952
And lastly a M1.1 flare that occurred at 00:18 UTC on November 12. The flare generated a Minor R1 Radio blackout over South America
https://twitter.com/x/status/1591261401171234816
https://twitter.com/x/status/1591263345788977152

There are currently 3 active regions on the solar disk: AR3140, AR3141 and AR3145

AR3137 is gone and as mentioned above AR3144 failed to complete its westward trajectory.

The total number of sunspots has decreased to 57 (27 of these are grouped into 6 active regions) NOAA forecast for the next 24h is 70% chance for C flares, 25% chance for M flares and 10% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 426.8 km/sec at 21:24 UTC on November 11 The maximum planetary index Kp in the past 24h was Kp3

Aurora Oval
aurora-map.jpg
https://twitter.com/x/status/1591275433001377793

● Current Conditions at 05:40 UTC on November 12

▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=2
▪︎Solar wind speed record: 416.1 km/sec
▪︎density: 6.52 protons/cm3
▪︎Neutron Counts today: +3.9% Elevated
▪︎X-ray Solar Flare: C4 at 02:24 UTC
▪︎Sunspot number: 57 (SN 79 Nov 11)

SpaceWeather.com
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SOLAR CYCLE 25 ACTIVITY REPORT NOVEMBER 13

Solar activity is at moderate levels. AR3141 continues to be the region with the highest solar activity. In the past 24 hours it generated eight C-class and five B-class flares. The largest events of the period were a M1.1 (see previous post) and a C6.6 at 18:04 UTC on November 12th
https://twitter.com/x/status/1591422420174635009

There are currently 3 active regions on the solar disk: AR3140, AR3141 and AR3145

Puma said:
AR3141 located in the northeast (N15E01) is currently a region with 21 sunspots with beta-gamma-delta magnetic complexity, i.e., a sunspot group with a beta-gamma magnetic configuration (bipolar positive and negative in a irregular way) but containing one or more delta sunspots (opposite polarity). The area occupied by this region remains at 600HM.
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AR3141 lost its sunspot with delta magnetic field and currently the magnetic field of this region is beta-gamma. Twenty sunspots compose this group with an area of 550HM. The NOAA forecast considers that this region has energy to produce M-class and X-class flares.

AR314O has grown to an area of 190HM with a beta-gamma magnetic field. NOAA forecast indicates that AR3140 has enough energy to produce C-class flares.
hmi200.gif

The total number of sunspots has increased to 65 (35 of these are grouped into 3 active regions) NOAA forecast for the next 24h is 90% chance for C flares, 40% chance for M flares and 10% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 499.2 km/sec at 05:18 UTC on November 13 The maximum planetary index Kp in the past 24h was Kp3

Aurora Oval
aurora-map.jpg
● Current Conditions at 05:30 UTC on November 13

▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=0
▪︎Solar wind speed record: 499.2 km/sec
▪︎density: 6.37 protons/cm3
▪︎Neutron Counts today: +2.8% Elevated
▪︎X-ray Solar Flare: C1 at 02:25 UTC
▪︎Sunspot number: 65 (SN 57 Nov 12)
•Emerging coronal hole on the southeast should reach Earth on Nov. 20th.

SpaceWeather.com
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SOLAR CYCLE 25 ACTIVITY REPORT NOVEMBER 14

AR3141 continues to be the region with the highest solar activity. It has generated 9 of the 14 C-class solar flares. The largest event of the period was a C4.1 at 06:21 on November 13th
https://twitter.com/x/status/1591997217354964993
There are currently 4 active regions on the solar disk: AR3140, AR3141 AR3145 and new region AR3146
https://twitter.com/x/status/1591960478498127873
AR3146 located on the northeast (N31E30) is a group of 5 sunspots with an area of 30HM and a beta magnetic configuration. It poses no threat for strong flares.
hmi200.gif
The total number of sunspots has increased to 74 (34 of these are grouped into 3 active regions) NOAA forecast for the next 24h is 90% chance for C flares, 35% chance for M flares and 10% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 527.8 km/sec at 20:13 UTC on November 13 The maximum planetary index Kp in the past 24h was Kp3

Aurora Oval
aurora-map.jpg

● Current Conditions at 05:50 UTC on November 14

▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=0
▪︎Solar wind speed record: 467.3 km/sec
▪︎density: 6.36 protons/cm3
▪︎Neutron Counts today: +3.2% Elevated
▪︎X-ray Solar Flare: C4 at 00:44 UTC
▪︎Sunspot number: 74 (SN 65 Nov 13)
•Emerging coronal hole on the southeast should reach Earth on Nov. 20th.

SpaceWeather.com
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SOLAR CYCLE 25 ACTIVITY REPORT NOVEMBER 15

AR3140 has not disappointed! On November 15th at 02:51 UTC, a medium-sized M1.0 flare occurred in that active region. The region has increased in magnetic complexity over the last day and is also showing a phenomenon known as "Ellerman bombs".

https://twitter.com/x/status/1592364855000207361
https://twitter.com/x/status/1592281331895275520

ELLERMAN BOMBS: Sunspot AR3140 is crackling--not with flares, but with Ellerman Bombs. Sylvain Weiller photographed the phenomenon today from Jerusalem, Israel:
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ebombs_strip.jpg
A sampling of the bombs are circled for reference. Weiller caught more than a dozen explosions underway in sunpot AR3140 (left) and a few in sunspot AR3141 (right). All this action took place during a brief 30 second exposure.

Ellerman bombs are magnetic explosions about one-millionth as powerful as true solar flares. They are named after physicist Ferdinand Ellerman who studied the tiny blasts in the early 20th century. Of course, "tiny" is relative. A single Ellerman bomb releases about 1026 ergs of energy--equal to about 100,000 World War II atomic bombs.

Explosions like these are a sign of magnetic complexity in a sunspot. Opposite polarities bump together, reconnect, and--boom. A full-fledged flare may not be far behind.
SpaceWeather.com ​
Click to expand...

There are currently 4 active regions on the solar disk: AR3140, AR3141 AR3145 and new region AR3146
AR 3140 is rapidly expanding as it heads towards the NW limb. Currently producing C-Flares and a moderate M-Flare will be possible during the next 24 hours. Image by SDO/HMI. SolarHam.com
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AR3140 located in the northwest (N25W63)
has grown in sunspots (with 14 now) and in size with an area of 550HM, moreover, its magnetic configuration is now beta-gamma-delta. The NOOA forecast for this region indicates that it harbors energy to produce X-class flares.

The total number of sunspots has increased to 77 (37 of these are grouped into 4 active regions) NOAA forecast for the next 24h is 95% chance for C flares, 45% chance for M flares and 15% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 495.1 km/sec at 19:16 UTC on November 14 The maximum planetary index Kp in the past 24h was Kp2

Aurora Oval
aurora-map.jpg
● Current Conditions at 05:30 UTC on November 15

▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=0.33
▪︎Solar wind speed record: 426.6 km/sec
▪︎density: 5.19 protons/cm3
▪︎Neutron Counts today: +3.2% Elevated
▪︎X-ray Solar Flare: M1 at 02:51 UTC
▪︎Sunspot number: 77 (SN 74 Nov 14)
•Emerging coronal hole on the southeast should reach Earth on Nov. 20th.

SpaceWeather.com
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SOLAR CYCLE 25 ACTIVITY REPORT NOVEMBER 16

The level of solar activity has remained at moderate levels for the past 24 hours. A large series of high level C flares and one M1 flare. Apart from the M-class flare (see previous post) the next largest event of the period was a C6.8 flare at 07:03 UTC Nov. 15 from AR3140
https://twitter.com/x/status/1592701048594247680

There are currently 4 active regions on the solar disk: AR3140, AR3141 AR3145 and AR3146

Puma said:
AR3140 located in the northwest (N25W63)
has grown in sunspots (with 14 now) and in size with an area of 550HM, moreover, its magnetic configuration is now beta-gamma-delta. The NOOA forecast for this region indicates that it harbors energy to produce X-class flares.
Click to expand...
AR3140 located on the northwest (N25W76) has lost its delta sunspots but remains with an area of 550HM The NOAA forecasts 85% chance of class C flares from this region.

The total number of sunspots has increased to 69 (29 of these are grouped into 4 active regions) NOAA forecast for the next 24h is 90% chance for C flares, 35% chance for M flares and 10% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 485.1 km/sec at 22:46 UTC on November 15. The maximum planetary index Kp in the past 24h was Kp2

Aurora Oval
aurora-map.jpg
● Current Conditions at 05:00 UTC on November 16

▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=0.33
▪︎Solar wind speed record: 459.1 km/sec
▪︎density: 0.46 protons/cm3
▪︎Neutron Counts today: +3.7% Elevated
▪︎X-ray Solar Flare: C3 at 05:38 UTC
▪︎Sunspot number: 69 (SN 77 Nov 15)
•Emerging coronal hole on the southeast should reach Earth on Nov. 20th.
SpaceWeather.com
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https://twitter.com/x/status/1592669311067652096
 
SOLAR CYCLE ACTIVITY REPORT NOVEMBER 17

AR314O and AR3145 are the regions with the highest activity in the last 24 hours. The largest event of the period was a C3.4 at 05:38 UTC on November 16th from AR3140 and on the part of AR3145 a flare C2.9 at 08:16 UTC
https://twitter.com/x/status/1592845957472755712
https://twitter.com/x/status/1592847508807774208

There are currently 6 active regions on the solar disk: AR3140, AR3141 AR3145, AR3146 and new regions AR3147 and AR3148

AR3147 is a big sunspot with size 120MH and a alfa magnetic complexity located on the southeast (S11E73) it poses no threat for strong flares.

AR3148 is a group of two sunspots located on the southeast (S32E62) with an area of 10MH and a beta magnetic field. t poses no threat for strong flares.
hmi200.gif

The total number of sunspots has increased to 85 (25 of these are grouped into 6 active regions) NOAA forecast for the next 24h is 95% chance for C flares, 35% chance for M flares and 10% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 370.8 km/sec at 04:57 UTC on November 16. The maximum planetary index Kp in the past 24h was Kp2

Aurora Oval
aurora-map.jpg

● Current Conditions at 05:00 UTC on November 17

▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=0
▪︎Solar wind speed record: 302.9 km/sec
▪︎density: 5.3 protons/cm3
▪︎Neutron Counts today: +3.8% Elevated
▪︎X-ray Solar Flare: C2 at 05:43 UTC
▪︎Sunspot number: 85 (SN 69 Nov 16)
•Emerging coronal hole on the southeast should reach Earth on Nov. 20th.
SpaceWeather.com
SpaceWeatherlive..com
 
SOLAR CYCLE 25 ACTIVITY REPORT NOVEMBER 18

Solar activity during the past 24 hours was at low levels with only minor C-Flares detected. The largest event of the period was a C6.2 from AR3140 at 09:28 on November 17.

There are currently 6 active regions on the solar disk: AR3140, AR3145, AR3146, AR3147, AR3148 and new region AR3149

AR3141 is gone and AR3140 and AR3145 are now about to rotate behind the west limb and will soon be out of direct Earth view.
FB_IMG_1668727352057.jpg

AR3149 is a group of 6 sunspots with an area of 10HM and a beta magnetic field. It has already produced a C2.2 flare but NOAA forecasts a 1% chance of producing M or X flares

The total number of sunspots has decreased to 64 (14 of these are grouped into 6 active regions) NOAA forecast for the next 24h is 50% chance for C flares, 15% chance for M flares and 1% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 372.5 km/sec at 23:06 UTC on November 17. The maximum planetary index Kp in the past 24h was Kp2

Aurora Oval
aurora-map.jpg
● Current Conditions at 04:30 UTC on November 18
GEOMAGNETIC STORM WATCH: NOAA forecasters say there is a chance of G1-class geomagnetic storms on Nov. 20th when a high-speed stream of solar wind is expected to hit Earth. The gaseous material is flowing from a large southern hole in the sun's atmosphere. Arctic sky watchers should be alert for auroras. SpaceWeather.com
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▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=0
▪︎Solar wind speed record: 324.9 km/sec
▪︎density: 7.67 protons/cm3
▪︎Neutron Counts today: +3.9% Elevated
▪︎X-ray Solar Flare: C5 at 00:00 UTC
▪︎Sunspot number: 64 (SN 85 Nov 17)
SpaceWeather.com
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SOLAR CYCLE 25 ACTIVITY REPORT NOVEMBER 19

Solar activity during the past 24 hours was at low levels. The largest event of the period was a C5.1 from new region AR3150 at 11:28 on November 18
https://twitter.com/x/status/1593674969698951170

AR3150 SUNSPOT GENESIS: A new sunspot is emerging in the sun's northern hemisphere, sprouting more than a dozen moon-sized cores in less than 12 hours. NASA's Solar Dynamics Observatory captured its rapid growth:​
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​
This sunspot is crackling with C-class solar flares, a result of opposing magnetic poles bumping together inside the active region's fast-changing boundaries. Stronger flares may be in the offing if the development proceeds apace. SpaceWeather.com​
Click to expand...

On November 18 at 09:14 UT a small C5.5 flare occurred in the far northwest. Probably from AR3145 which has already left the solar disk.
https://twitter.com/x/status/1593618785403027456

There are currently 4 active regions on the solar disk: AR3147, AR3148, AR3149 and new region AR3150

AR3150 located on the northwest (N21W42)
is a group of 8 sunspots with an area of 80HM and a beta magnetic field. It has already produced a C5.1 flare and NOAA forecasts a 10% chance of producing M flares.

The total number of sunspots has decreased to 55 (15 of these are grouped into 6 active regions) NOAA forecast for the next 24h is 55% chance for C flares, 10% chance for M flares and 1% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 472.9 km/sec at 02:20 UTC on November 18. The maximum planetary index Kp in the past 24h was Kp3

Aurora Oval
aurora-map (1).jpg
● Current Conditions at 05:00 UTC on November 19

▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=2
▪︎Solar wind speed record: 361.9 km/sec
▪︎density: 7.20 protons/cm3
▪︎Neutron Counts today: +4.0% Elevated
▪︎X-ray Solar Flare: C2 at 01:37 UTC
▪︎Sunspot number: 55 (SN 64 Nov 18)
SpaceWeather.com
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SOLAR CYCLE 25 ACTIVITY REPORT NOVEMBER 20

Solar activity is now at moderate levels with several C-class flares from regions 133148 and 133150. An M1.61 solar flare was detected at 12:56 UTC on November 19 from AR3150.
chrome_screenshot_1668917739152.png
https://twitter.com/x/status/1593981408929792002
https://twitter.com/x/status/1593983696268570624

The M1.6 produced a Minor R1 Radio blackout over South Atlantic Ocean.
https://twitter.com/x/status/1593951508655398918
M1.6 FLARE UPDATE Newly-arriving images from SOHO confirm that the shockwave lifted a CME out of the sun's atmosphere. However, NOAA models confirm that it will not hit Earth. SpaceWeather.com
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There are currently 4 active regions on the solar disk: AR3147, AR3148, AR3149 and AR3150
hmi200.gif
AR3150 located on the northwest (N22W58) has grown to 140HM NOAA forecasts a 60% chance of producing C-class flares and 20% for M-class flares

The total number of sunspots has decreased to 59 (19 of these are grouped into 6 active regions) NOAA forecast for the next 24h is 80% chance for C flares, 25% chance for M flares and 1% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 391.7 km/sec at 09:26 UTC on November 19. The maximum planetary index Kp in the past 24h was Kp2

Aurora Oval
aurora-map.jpg

● Current Conditions at 03:30 UTC on November 20

▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=1
▪︎Solar wind speed record: 322.8 km/sec
▪︎density: 2.73 protons/cm3
▪︎Neutron Counts today: +4.0% Elevated
▪︎X-ray Solar Flare: M1 at 12:56 UTC
▪︎Sunspot number: 59 (SN 55 Nov 19)
SpaceWeather.com
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WORLDWIDE EARTHQUAKE REPORT NOVEMBER 21

Solar activity has been at low levels with several B-class flares. Active regions 133149 and 133150 were the most active. The largest event of the period was a C4.4 from AR3150 at 06:09 on November 20
https://twitter.com/x/status/1594285718486016000
https://twitter.com/x/status/1594288649666953218
https://twitter.com/x/status/1594505131906793473

There are currently 4 active regions on the solar disk: AR3147, AR3148, AR3149 and AR3150

The total number of sunspots has increased to 72 (32 of these are grouped into 4 active regions) NOAA forecast for the next 24h is 65% chance for C flares, 15% chance for M flares and 1% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 467.7 km/sec at 04:54 UTC on November 20. The maximum planetary index Kp in the past 24h was Kp3

Aurora Oval
aurora-map (1).jpg
Where is the storm?

A geomagnetic storm forecast for the past few days has so far failed to materialize. The solar wind speed did increase somewhat during the past several hours to just above 400 km/s, likely flowing from the large coronal hole in the Sun's southern hemisphere. The source coronal hole is high in latitude and was never squarely facing Earth, so much of the stream is flowing south of the Sun-Earth line. Despite this, a minor (G1) geomagnetic storm watch remains in effect in the short term. Aurora sky watchers at higher latitudes should remain alert. SolarHam.com
Click to expand...

● Current Conditions at 04:46 UTC on November 21

▪︎Geospace unsettled
▪︎Geomagnetic conditions now Kp=4
▪︎Solar wind speed record: 429.7 km/sec
▪︎density: 12.04 protons/cm3
▪︎Neutron Counts today: +3.6% Elevated
▪︎X-ray Solar Flare: C3 at 03:47 UTC
▪︎Sunspot number: 72 (SN 59 Nov 29)
SpaceWeather.com
SpaceWeatherlive..com
 
SOLAR CYCLE ACTIVITY REPORT NOVEMBER 22

Solar activity is at low levels. AR3149 has been the most active region in the past 24h Most of the flares produced by this region were class C and the highest class event was a C3 flare at 03:42 on November 21.

https://twitter.com/x/status/1594691348724330496
https://twitter.com/x/status/1594687334678757377

There are currently 5 active regions on the solar disk: AR3147, AR3148, AR3149, AR3150 and new region AR3151
hmi200.gif
AR3151 is a group of 7 sunspots located on the southeast (S14E19) with an area of 10HM and a beta magnetic field. It poses no threat for strong flares

The total number of sunspots has increased to 83 (33 of these are grouped into 5 active regions) NOAA forecast for the next 24h is 50% chance for C flares, 15% chance for M flares and 1% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet to active levels for the past 24 hours. Active geomagnetic conditions (Kp4) reached at 02:59 UTC on November 20th The solar wind speed record reached a peak of 468.8 km/sec at 09:46 UTC on November 21. The maximum planetary index Kp in the past 24h was Kp 4

Aurora Oval
aurora-map.jpg
https://twitter.com/x/status/1594734585430032390
CHANCE OF MINOR STORMS TODAY: NOAA forecasters say there is a chance of minor G1-class geomagnetic storms on Nov. 22nd when a CME might sideswipe Earth's magnetic field. The faint CME was hurled into space on Nov. 19th by an erupting filament of magnetism in the sun's northern hemisphere. A glancing blow could spark bright auroras around the Arctic Circle. SpaceWeather.com
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● Current Conditions at 04:30 UTC on November 22

▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=1
▪︎Solar wind speed record: 382 km/sec
▪︎density: 5.31 protons/cm3
▪︎Neutron Counts today: +2.7% Elevated
▪︎X-ray Solar Flare: C1 at 23:08 UTC
▪︎Sunspot number: 83 (SN 72 Nov 21)
SpaceWeather.com
SpaceWeatherlive..com
 
Puma said:
SOLAR CYCLE ACTIVITY REPORT NOVEMBER 22
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spaceref.com

Orbital View As Snow Blankets Yosemite

In the second week of November 2022, the first significant winter storm of the season pummeled California with record daily rainfall in the lowlands and heavy snowfall in the mountains.
spaceref.com spaceref.com
November 21, 2022
In the second week of November 2022, the first significant winter storm of the season pummeled California with record daily rainfall in the lowlands and heavy snowfall in the mountains.

As the storm system moved on to the Great Plains, skies cleared over California and revealed this wintery view of the Central Sierra Nevada.

The Operational Land Imager-2 (OLI-2) on Landsat 9 acquired this natural-color image on November 13, 2022. It shows snow blanketing the central Sierras, including Yosemite National Park, and areas east into Mono County.

According to news reports, the storm on November 8 delivered a daily record 1.31 inches (3.33 centimeters) of rain to Los Angeles, about 280 miles (450 kilometers) southeast of Yosemite. In the higher elevations, precipitation fell as snow. The area near Devils Postpile, southeast of the park, received 28 inches (71 centimeters). Yosemite Valley—visible in the detailed image below—saw about 4 inches, while some of the park’s higher peaks saw as much as 30 inches.

On November 13, snow still spanned much of the central Sierras and a dusting was still visible on the floor of Yosemite Valley. But the snowy scene is interrupted by the bare surfaces of the valley’s famous steep granite cliffs and domes (brown) and evergreen trees (green).

Snowfall in Yosemite National Park led to the closure of Tioga Road, which bisects the park and provides access to areas east, including Tuolumne Meadows. The road usually closes each year in November and reopens in late May or early June. Big Oak Flat Road was also closed during the storm when a rockfall left huge boulders blocking the road.

The storm led officials to declare the end to the park’s fire season. Fire season ends after a storm delivers at least two inches of precipitation.

NASA Earth Observatory images by Lauren Dauphin, using Landsat data from the U.S. Geological Survey. Story by Kathryn Hansen.
More imagery
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https://twitter.com/x/status/1594552833332088832

https://twitter.com/x/status/1593999242242101253

https://twitter.com/x/status/1594555261729275904
https://twitter.com/x/status/1594690944569425920

81.2 INCHES NEW RECORD SNOW REPORT in Hamburg, NY!
99,177 views Premiered 10 hours ago Reed Timmer
Breaking news - A new official storm total of 81.2" has been recorded for Hamburg, NY between Wednesday night and Sunday. This surpasses the total for Orchard Park, NY at 80.0" for the most recent lake effect snow emergency.

I believe this surpasses the 2014 lake effect snow event in the Buffalo Southtowns by a few inches, although the wind was a bit less. This video shows the scenes around Hamburg, NY of the heaviest snowfall that contributed to this record-breaking snow event!
 
SOLAR CYCLE 25 ACTIVITY REPORT NOVEMBER 23

Solar activity during the past 24 hours was at low levels. Active region 13151 continued to gradually develop in the southeast quadrant and produced six minor C-Flares. The largest event of the period was a C7.1 at 07:27 UTC on November 22.
https://twitter.com/x/status/1595231906450251777

There are currently 4 active regions on the solar disk: AR3147, AR3148, AR3149, and AR3151

The total number of sunspots has decreased to 61 (34 of these are grouped into 4 active regions) NOAA forecast for the next 24h is 55% chance for C flares, 15% chance for M flares and 1% chance for X flares.

● Auroral Activity

The geomagnetic field has been at quiet levels for the past 24 hours. The solar wind speed record reached a peak of 403.3 km/sec at 00:27 UTC on November 22 The maximum planetary index Kp in the past 24h was Kp 1

Aurora Oval
aurora-map.jpg
A geomagnetic storm watch is no longer in effect as the weak coronal hole stream continues to diminish. Visible aurora during the next few days should be mostly confined to the polar zones.

● Current Conditions at 05:30 UTC on November 23

▪︎Geospace quiet
▪︎Geomagnetic conditions now Kp=0
▪︎Solar wind speed record: 306.5 km/sec
▪︎density: 11.71 protons/cm3
▪︎Neutron Counts today: +2 7% Elevated
▪︎X-ray Solar Flare: C1 at 01:14 UTC
▪︎Sunspot number: 61 (SN 83vNov 22)
SpaceWeather.com
SpaceWeatherlive..com
 
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